SIGI 10-Q Quarterly Report Sept. 30, 2021 | Alphaminr
SELECTIVE INSURANCE GROUP INC

SIGI 10-Q Quarter ended Sept. 30, 2021

SELECTIVE INSURANCE GROUP INC
10-Ks and 10-Qs
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
10-Q
10-Q
10-Q
10-K
PROXIES
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
DEF 14A
sigi-20210930
FALSE 2021 Q3 0000230557 12-31 0000230557 2021-01-01 2021-09-30 0000230557 us-gaap:CommonStockMember 2021-01-01 2021-09-30 0000230557 us-gaap:NoncumulativePreferredStockMember 2021-01-01 2021-09-30 xbrli:shares 0000230557 2021-10-15 iso4217:USD 0000230557 2021-09-30 0000230557 2020-12-31 iso4217:USD xbrli:shares 0000230557 us-gaap:PreferredStockMember 2021-09-30 0000230557 us-gaap:PreferredStockMember 2020-12-31 0000230557 us-gaap:SeriesBMember 2020-12-31 0000230557 us-gaap:SeriesBMember 2021-09-30 0000230557 us-gaap:CommonStockMember 2021-09-30 0000230557 us-gaap:CommonStockMember 2020-12-31 0000230557 us-gaap:TreasuryStockMember 2021-09-30 0000230557 us-gaap:TreasuryStockMember 2020-12-31 0000230557 2021-07-01 2021-09-30 0000230557 2020-07-01 2020-09-30 0000230557 2020-01-01 2020-09-30 0000230557 us-gaap:PreferredStockMember 2021-06-30 0000230557 us-gaap:PreferredStockMember 2020-06-30 0000230557 us-gaap:PreferredStockMember 2020-12-31 0000230557 us-gaap:PreferredStockMember 2019-12-31 0000230557 us-gaap:PreferredStockMember 2021-07-01 2021-09-30 0000230557 us-gaap:PreferredStockMember 2020-07-01 2020-09-30 0000230557 us-gaap:PreferredStockMember 2021-01-01 2021-09-30 0000230557 us-gaap:PreferredStockMember 2020-01-01 2020-09-30 0000230557 us-gaap:PreferredStockMember 2021-09-30 0000230557 us-gaap:PreferredStockMember 2020-09-30 0000230557 us-gaap:CommonStockMember 2021-06-30 0000230557 us-gaap:CommonStockMember 2020-06-30 0000230557 us-gaap:CommonStockMember 2020-12-31 0000230557 us-gaap:CommonStockMember 2019-12-31 0000230557 us-gaap:CommonStockMember 2021-07-01 2021-09-30 0000230557 us-gaap:CommonStockMember 2020-07-01 2020-09-30 0000230557 us-gaap:CommonStockMember 2021-01-01 2021-09-30 0000230557 us-gaap:CommonStockMember 2020-01-01 2020-09-30 0000230557 us-gaap:CommonStockMember 2021-09-30 0000230557 us-gaap:CommonStockMember 2020-09-30 0000230557 us-gaap:AdditionalPaidInCapitalMember 2021-06-30 0000230557 us-gaap:AdditionalPaidInCapitalMember 2020-06-30 0000230557 us-gaap:AdditionalPaidInCapitalMember 2020-12-31 0000230557 us-gaap:AdditionalPaidInCapitalMember 2019-12-31 0000230557 us-gaap:AdditionalPaidInCapitalMember 2021-07-01 2021-09-30 0000230557 us-gaap:AdditionalPaidInCapitalMember 2020-07-01 2020-09-30 0000230557 us-gaap:AdditionalPaidInCapitalMember 2021-01-01 2021-09-30 0000230557 us-gaap:AdditionalPaidInCapitalMember 2020-01-01 2020-09-30 0000230557 us-gaap:AdditionalPaidInCapitalMember 2021-09-30 0000230557 us-gaap:AdditionalPaidInCapitalMember 2020-09-30 0000230557 us-gaap:RetainedEarningsMember 2021-06-30 0000230557 us-gaap:RetainedEarningsMember 2020-06-30 0000230557 us-gaap:RetainedEarningsMember 2020-12-31 0000230557 us-gaap:RetainedEarningsMember 2019-12-31 0000230557 us-gaap:AccountingStandardsUpdate201613Member us-gaap:RetainedEarningsMember 2021-06-30 0000230557 us-gaap:AccountingStandardsUpdate201613Member us-gaap:RetainedEarningsMember 2020-06-30 0000230557 us-gaap:AccountingStandardsUpdate201613Member us-gaap:RetainedEarningsMember 2020-12-31 0000230557 us-gaap:AccountingStandardsUpdate201613Member us-gaap:RetainedEarningsMember 2019-12-31 0000230557 us-gaap:RetainedEarningsMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2021-06-30 0000230557 us-gaap:RetainedEarningsMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-06-30 0000230557 us-gaap:RetainedEarningsMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-12-31 0000230557 us-gaap:RetainedEarningsMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2019-12-31 0000230557 us-gaap:RetainedEarningsMember 2021-07-01 2021-09-30 0000230557 us-gaap:RetainedEarningsMember 2020-07-01 2020-09-30 0000230557 us-gaap:RetainedEarningsMember 2021-01-01 2021-09-30 0000230557 us-gaap:RetainedEarningsMember 2020-01-01 2020-09-30 0000230557 us-gaap:RetainedEarningsMember 2021-09-30 0000230557 us-gaap:RetainedEarningsMember 2020-09-30 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-06-30 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-06-30 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-12-31 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-12-31 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-07-01 2021-09-30 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-07-01 2020-09-30 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-01-01 2021-09-30 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-09-30 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-09-30 0000230557 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-09-30 0000230557 us-gaap:TreasuryStockMember 2021-06-30 0000230557 us-gaap:TreasuryStockMember 2020-06-30 0000230557 us-gaap:TreasuryStockMember 2020-12-31 0000230557 us-gaap:TreasuryStockMember 2019-12-31 0000230557 us-gaap:TreasuryStockMember 2021-07-01 2021-09-30 0000230557 us-gaap:TreasuryStockMember 2020-07-01 2020-09-30 0000230557 us-gaap:TreasuryStockMember 2021-01-01 2021-09-30 0000230557 us-gaap:TreasuryStockMember 2020-01-01 2020-09-30 0000230557 us-gaap:TreasuryStockMember 2021-09-30 0000230557 us-gaap:TreasuryStockMember 2020-09-30 0000230557 2020-09-30 0000230557 2021-06-30 0000230557 2020-06-30 0000230557 2019-12-31 0000230557 us-gaap:AvailableForSaleSecurities 2021-01-01 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities 2020-01-01 2020-09-30 0000230557 us-gaap:HeldtomaturitySecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:HeldtomaturitySecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:EquitySecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:EquitySecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:USTreasuryAndGovernmentMember 2021-09-30 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2021-09-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:USTreasuryAndGovernmentMember 2020-12-31 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2020-12-31 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2020-12-31 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-06-30 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-07-01 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2021-06-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2021-07-01 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-06-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-07-01 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2021-06-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2021-07-01 2021-09-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-06-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-07-01 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2021-06-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2021-07-01 2021-09-30 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-06-30 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-07-01 2020-09-30 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2020-06-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2020-07-01 2020-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2020-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-06-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-07-01 2020-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2020-06-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2020-07-01 2020-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2020-09-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-06-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-07-01 2020-09-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2020-06-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2020-07-01 2020-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2020-09-30 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-01-01 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2021-01-01 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-01-01 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-01-01 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2019-12-31 0000230557 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-01-01 2020-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2019-12-31 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2020-01-01 2020-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2019-12-31 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-01-01 2020-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2019-12-31 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:AssetBackedSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2019-12-31 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-01-01 2020-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2019-12-31 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:CommercialMortgageBackedSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:AvailableforsaleSecuritiesMember 2021-09-30 0000230557 us-gaap:AvailableforsaleSecuritiesMember 2020-12-31 0000230557 us-gaap:USTreasuryAndGovernmentMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:ForeignGovernmentDebtSecuritiesMember 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:AvailableForSaleSecurities 2021-09-30 0000230557 us-gaap:USTreasuryAndGovernmentMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:AvailableForSaleSecurities us-gaap:ForeignGovernmentDebtSecuritiesMember 2020-12-31 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 us-gaap:AvailableForSaleSecurities 2020-12-31 0000230557 srt:PartnershipInterestMember us-gaap:PrivateEquityFundsMember 2021-09-30 0000230557 srt:PartnershipInterestMember us-gaap:PrivateEquityFundsMember 2020-12-31 0000230557 srt:PartnershipInterestMember sigi:PrivateCreditFundsMember 2021-09-30 0000230557 srt:PartnershipInterestMember sigi:PrivateCreditFundsMember 2020-12-31 0000230557 srt:PartnershipInterestMember sigi:RealAssetsMember 2021-09-30 0000230557 srt:PartnershipInterestMember sigi:RealAssetsMember 2020-12-31 0000230557 srt:PartnershipInterestMember 2021-09-30 0000230557 srt:PartnershipInterestMember 2020-12-31 0000230557 sigi:OtherSecuritiesMember 2021-09-30 0000230557 sigi:OtherSecuritiesMember 2020-12-31 0000230557 us-gaap:OtherInvestmentsMember 2021-09-30 0000230557 us-gaap:OtherInvestmentsMember 2020-12-31 0000230557 sigi:InvestmentsAccountedForUnderTheEquityMethodMember 2021-07-01 2021-09-30 0000230557 sigi:InvestmentsAccountedForUnderTheEquityMethodMember 2020-07-01 2020-09-30 0000230557 sigi:InvestmentsAccountedForUnderTheEquityMethodMember 2021-01-01 2021-09-30 0000230557 sigi:InvestmentsAccountedForUnderTheEquityMethodMember 2020-01-01 2020-09-30 0000230557 srt:PartnershipInterestMember 2021-07-01 2021-09-30 0000230557 srt:PartnershipInterestMember 2020-07-01 2020-09-30 0000230557 srt:PartnershipInterestMember 2021-01-01 2021-09-30 0000230557 srt:PartnershipInterestMember 2020-01-01 2020-09-30 0000230557 srt:FederalHomeLoanBankOfIndianapolisMember us-gaap:USTreasuryAndGovernmentMember 2021-09-30 0000230557 us-gaap:USTreasuryAndGovernmentMember srt:FederalHomeLoanBankOfNewYorkMember 2021-09-30 0000230557 us-gaap:USTreasuryAndGovernmentMember 2021-09-30 0000230557 srt:FederalHomeLoanBankOfIndianapolisMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember srt:FederalHomeLoanBankOfNewYorkMember 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember 2021-09-30 0000230557 srt:FederalHomeLoanBankOfIndianapolisMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2021-09-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember srt:FederalHomeLoanBankOfNewYorkMember 2021-09-30 0000230557 us-gaap:ResidentialMortgageBackedSecuritiesMember 2021-09-30 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember srt:FederalHomeLoanBankOfIndianapolisMember 2021-09-30 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember srt:FederalHomeLoanBankOfNewYorkMember 2021-09-30 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember 2021-09-30 0000230557 srt:FederalHomeLoanBankOfIndianapolisMember 2021-09-30 0000230557 srt:FederalHomeLoanBankOfNewYorkMember 2021-09-30 xbrli:pure 0000230557 us-gaap:FixedMaturitiesMember 2021-07-01 2021-09-30 0000230557 us-gaap:FixedMaturitiesMember 2020-07-01 2020-09-30 0000230557 us-gaap:FixedMaturitiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:FixedMaturitiesMember 2020-01-01 2020-09-30 0000230557 sigi:CommercialMortgageLoansMember 2021-07-01 2021-09-30 0000230557 sigi:CommercialMortgageLoansMember 2020-07-01 2020-09-30 0000230557 sigi:CommercialMortgageLoansMember 2021-01-01 2021-09-30 0000230557 sigi:CommercialMortgageLoansMember 2020-01-01 2020-09-30 0000230557 us-gaap:EquitySecuritiesMember 2021-07-01 2021-09-30 0000230557 us-gaap:EquitySecuritiesMember 2020-07-01 2020-09-30 0000230557 us-gaap:ShortTermInvestmentsMember 2021-07-01 2021-09-30 0000230557 us-gaap:ShortTermInvestmentsMember 2020-07-01 2020-09-30 0000230557 us-gaap:ShortTermInvestmentsMember 2021-01-01 2021-09-30 0000230557 us-gaap:ShortTermInvestmentsMember 2020-01-01 2020-09-30 0000230557 us-gaap:OtherInvestmentsMember 2021-07-01 2021-09-30 0000230557 us-gaap:OtherInvestmentsMember 2020-07-01 2020-09-30 0000230557 us-gaap:OtherInvestmentsMember 2021-01-01 2021-09-30 0000230557 us-gaap:OtherInvestmentsMember 2020-01-01 2020-09-30 0000230557 us-gaap:AvailableforsaleSecuritiesMember 2021-07-01 2021-09-30 0000230557 us-gaap:AvailableforsaleSecuritiesMember 2020-07-01 2020-09-30 0000230557 us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:HeldtomaturitySecuritiesMember 2021-07-01 2021-09-30 0000230557 us-gaap:HeldtomaturitySecuritiesMember 2020-07-01 2020-09-30 0000230557 us-gaap:HeldtomaturitySecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:HeldtomaturitySecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:SevenPointTwentyFivePercentSeniorNotesMember 2021-09-30 0000230557 sigi:SevenPointTwentyFivePercentSeniorNotesMember 2021-09-30 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:SevenPointTwentyFivePercentSeniorNotesMember 2020-12-31 0000230557 sigi:SevenPointTwentyFivePercentSeniorNotesMember 2020-12-31 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:SixPointSeventyPercentSeniorNotesMember 2021-09-30 0000230557 sigi:SixPointSeventyPercentSeniorNotesMember 2021-09-30 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:SixPointSeventyPercentSeniorNotesMember 2020-12-31 0000230557 sigi:SixPointSeventyPercentSeniorNotesMember 2020-12-31 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:FivePointThreeHundredSeventyFiveMember 2021-09-30 0000230557 sigi:FivePointThreeHundredSeventyFiveMember 2021-09-30 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:FivePointThreeHundredSeventyFiveMember 2020-12-31 0000230557 sigi:FivePointThreeHundredSeventyFiveMember 2020-12-31 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:OnePointSixtyOnePercentBorrowingFromFederalHomeLoanBankDueJuly212021Member 2021-09-30 0000230557 sigi:OnePointSixtyOnePercentBorrowingFromFederalHomeLoanBankDueJuly212021Member 2021-09-30 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:OnePointSixtyOnePercentBorrowingFromFederalHomeLoanBankDueJuly212021Member 2020-12-31 0000230557 sigi:OnePointSixtyOnePercentBorrowingFromFederalHomeLoanBankDueJuly212021Member 2020-12-31 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:OnePointFiftySixPercentBorrowingFromFederalHomeLoanBankDueAugust162021Member 2021-09-30 0000230557 sigi:OnePointFiftySixPercentBorrowingFromFederalHomeLoanBankDueAugust162021Member 2021-09-30 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:OnePointFiftySixPercentBorrowingFromFederalHomeLoanBankDueAugust162021Member 2020-12-31 0000230557 sigi:OnePointFiftySixPercentBorrowingFromFederalHomeLoanBankDueAugust162021Member 2020-12-31 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member 2021-09-30 0000230557 sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member 2021-09-30 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member 2020-12-31 0000230557 sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member 2020-12-31 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:LongTermDebtExcludingIssuanceCostsMember 2021-09-30 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:LongTermDebtExcludingIssuanceCostsMember 2020-12-31 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:UnamortizedDebtIssuanceCostsMember 2021-09-30 0000230557 us-gaap:CarryingReportedAmountFairValueDisclosureMember sigi:UnamortizedDebtIssuanceCostsMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignGovernmentDebtSecuritiesMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignGovernmentDebtSecuritiesMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2021-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2021-09-30 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommonStockMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommonStockMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:CommonStockMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CommonStockMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:NonredeemablePreferredStockMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:NonredeemablePreferredStockMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:NonredeemablePreferredStockMember 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:NonredeemablePreferredStockMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignGovernmentDebtSecuritiesMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignGovernmentDebtSecuritiesMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignGovernmentDebtSecuritiesMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-12-31 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-12-31 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommonStockMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommonStockMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:CommonStockMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CommonStockMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:NonredeemablePreferredStockMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:NonredeemablePreferredStockMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:NonredeemablePreferredStockMember 2020-12-31 0000230557 us-gaap:FairValueMeasurementsRecurringMember us-gaap:NonredeemablePreferredStockMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableforsaleSecuritiesMember 2020-12-31 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2020-12-31 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2020-12-31 0000230557 us-gaap:InvestmentsMember us-gaap:AvailableforsaleSecuritiesMember 2020-12-31 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:InvestmentsMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:GainLossOnInvestmentsMember1 us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:GainLossOnInvestmentsMember1 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:GainLossOnInvestmentsMember1 us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:GainLossOnInvestmentsMember1 us-gaap:InvestmentsMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember sigi:NetInvestmentIncomeEarnedMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember sigi:NetInvestmentIncomeEarnedMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember sigi:NetInvestmentIncomeEarnedMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:InvestmentsMember sigi:NetInvestmentIncomeEarnedMember us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableforsaleSecuritiesMember 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2021-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2021-09-30 0000230557 us-gaap:InvestmentsMember us-gaap:AvailableforsaleSecuritiesMember 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableforsaleSecuritiesMember 2019-12-31 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2019-12-31 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2019-12-31 0000230557 us-gaap:InvestmentsMember us-gaap:AvailableforsaleSecuritiesMember 2019-12-31 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:InvestmentsMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:GainLossOnInvestmentsMember1 us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:GainLossOnInvestmentsMember1 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:GainLossOnInvestmentsMember1 us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:GainLossOnInvestmentsMember1 us-gaap:InvestmentsMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember sigi:NetInvestmentIncomeEarnedMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember sigi:NetInvestmentIncomeEarnedMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember sigi:NetInvestmentIncomeEarnedMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:InvestmentsMember sigi:NetInvestmentIncomeEarnedMember us-gaap:AvailableforsaleSecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:AvailableforsaleSecuritiesMember 2020-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2020-09-30 0000230557 us-gaap:AssetBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2020-09-30 0000230557 us-gaap:InvestmentsMember us-gaap:AvailableforsaleSecuritiesMember 2020-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 sigi:SevenPointTwentyFivePercentSeniorNotesMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 us-gaap:FairValueInputsLevel2Member sigi:SevenPointTwentyFivePercentSeniorNotesMember 2021-09-30 0000230557 us-gaap:FairValueInputsLevel3Member sigi:SevenPointTwentyFivePercentSeniorNotesMember 2021-09-30 0000230557 sigi:SixPointSeventyPercentSeniorNotesMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 sigi:SixPointSeventyPercentSeniorNotesMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 sigi:SixPointSeventyPercentSeniorNotesMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 sigi:FivePointThreeHundredSeventyFiveMember us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 sigi:FivePointThreeHundredSeventyFiveMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 sigi:FivePointThreeHundredSeventyFiveMember us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member us-gaap:FairValueInputsLevel1Member 2021-09-30 0000230557 sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member us-gaap:FairValueInputsLevel2Member 2021-09-30 0000230557 sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member us-gaap:FairValueInputsLevel3Member 2021-09-30 0000230557 us-gaap:LongTermDebtMember 2021-09-30 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember 2020-12-31 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 sigi:SevenPointTwentyFivePercentSeniorNotesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueInputsLevel2Member sigi:SevenPointTwentyFivePercentSeniorNotesMember 2020-12-31 0000230557 us-gaap:FairValueInputsLevel3Member sigi:SevenPointTwentyFivePercentSeniorNotesMember 2020-12-31 0000230557 sigi:SixPointSeventyPercentSeniorNotesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 sigi:SixPointSeventyPercentSeniorNotesMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 sigi:SixPointSeventyPercentSeniorNotesMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 sigi:FivePointThreeHundredSeventyFiveMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 sigi:FivePointThreeHundredSeventyFiveMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 sigi:FivePointThreeHundredSeventyFiveMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 sigi:OnePointSixtyOnePercentBorrowingFromFederalHomeLoanBankDueJuly212021Member us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 sigi:OnePointSixtyOnePercentBorrowingFromFederalHomeLoanBankDueJuly212021Member us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 sigi:OnePointSixtyOnePercentBorrowingFromFederalHomeLoanBankDueJuly212021Member us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 sigi:OnePointFiftySixPercentBorrowingFromFederalHomeLoanBankDueAugust162021Member us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 us-gaap:FairValueInputsLevel2Member sigi:OnePointFiftySixPercentBorrowingFromFederalHomeLoanBankDueAugust162021Member 2020-12-31 0000230557 sigi:OnePointFiftySixPercentBorrowingFromFederalHomeLoanBankDueAugust162021Member us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member us-gaap:FairValueInputsLevel1Member 2020-12-31 0000230557 sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member us-gaap:FairValueInputsLevel2Member 2020-12-31 0000230557 sigi:ThreePointZeroThreePercentBorrowingFromFederalHomeLoanBankDueDecember162026Member us-gaap:FairValueInputsLevel3Member 2020-12-31 0000230557 us-gaap:LongTermDebtMember 2020-12-31 0000230557 us-gaap:PremiumsReceivableMember us-gaap:AccountingStandardsUpdate201613Member us-gaap:RetainedEarningsMember 2021-06-30 0000230557 us-gaap:PremiumsReceivableMember us-gaap:AccountingStandardsUpdate201613Member us-gaap:RetainedEarningsMember 2020-06-30 0000230557 us-gaap:PremiumsReceivableMember us-gaap:AccountingStandardsUpdate201613Member us-gaap:RetainedEarningsMember 2020-12-31 0000230557 us-gaap:PremiumsReceivableMember us-gaap:AccountingStandardsUpdate201613Member us-gaap:RetainedEarningsMember 2019-12-31 0000230557 us-gaap:PremiumsReceivableMember 2021-06-30 0000230557 us-gaap:PremiumsReceivableMember 2020-06-30 0000230557 us-gaap:PremiumsReceivableMember 2020-12-31 0000230557 us-gaap:PremiumsReceivableMember 2019-12-31 0000230557 us-gaap:PremiumsReceivableMember 2021-07-01 2021-09-30 0000230557 us-gaap:PremiumsReceivableMember 2020-07-01 2020-09-30 0000230557 us-gaap:PremiumsReceivableMember 2021-01-01 2021-09-30 0000230557 us-gaap:PremiumsReceivableMember 2020-01-01 2020-09-30 0000230557 us-gaap:PremiumsReceivableMember 2021-09-30 0000230557 us-gaap:PremiumsReceivableMember 2020-09-30 0000230557 srt:AMBestAPlusPlusRatingMember us-gaap:FinancialAssetNotPastDueMember 2021-09-30 0000230557 srt:AMBestAPlusPlusRatingMember us-gaap:FinancialAssetPastDueMember 2021-09-30 0000230557 srt:AMBestAPlusPlusRatingMember 2021-09-30 0000230557 srt:AMBestAPlusRatingMember us-gaap:FinancialAssetNotPastDueMember 2021-09-30 0000230557 srt:AMBestAPlusRatingMember us-gaap:FinancialAssetPastDueMember 2021-09-30 0000230557 srt:AMBestAPlusRatingMember 2021-09-30 0000230557 srt:AMBestARatingMember us-gaap:FinancialAssetNotPastDueMember 2021-09-30 0000230557 srt:AMBestARatingMember us-gaap:FinancialAssetPastDueMember 2021-09-30 0000230557 srt:AMBestARatingMember 2021-09-30 0000230557 srt:AMBestAMinusRatingMember us-gaap:FinancialAssetNotPastDueMember 2021-09-30 0000230557 srt:AMBestAMinusRatingMember us-gaap:FinancialAssetPastDueMember 2021-09-30 0000230557 srt:AMBestAMinusRatingMember 2021-09-30 0000230557 us-gaap:FinancialAssetNotPastDueMember srt:AMBestBPlusPlusRatingMember 2021-09-30 0000230557 srt:AMBestBPlusPlusRatingMember us-gaap:FinancialAssetPastDueMember 2021-09-30 0000230557 srt:AMBestBPlusPlusRatingMember 2021-09-30 0000230557 srt:AMBestBPlusRatingMember us-gaap:FinancialAssetNotPastDueMember 2021-09-30 0000230557 srt:AMBestBPlusRatingMember us-gaap:FinancialAssetPastDueMember 2021-09-30 0000230557 srt:AMBestBPlusRatingMember 2021-09-30 0000230557 sigi:AMBestRatedReinsurerMember us-gaap:FinancialAssetNotPastDueMember 2021-09-30 0000230557 sigi:AMBestRatedReinsurerMember us-gaap:FinancialAssetPastDueMember 2021-09-30 0000230557 sigi:AMBestRatedReinsurerMember 2021-09-30 0000230557 sigi:TotalfederalandstatepoolsMember us-gaap:FinancialAssetNotPastDueMember 2021-09-30 0000230557 sigi:TotalfederalandstatepoolsMember us-gaap:FinancialAssetPastDueMember 2021-09-30 0000230557 sigi:TotalfederalandstatepoolsMember 2021-09-30 0000230557 us-gaap:FinancialAssetNotPastDueMember sigi:OtherFederalAndStatePoolsMember 2021-09-30 0000230557 us-gaap:FinancialAssetPastDueMember sigi:OtherFederalAndStatePoolsMember 2021-09-30 0000230557 sigi:OtherFederalAndStatePoolsMember 2021-09-30 0000230557 us-gaap:FinancialAssetNotPastDueMember sigi:TotalNonRatedReinsurerMember 2021-09-30 0000230557 us-gaap:FinancialAssetPastDueMember sigi:TotalNonRatedReinsurerMember 2021-09-30 0000230557 sigi:TotalNonRatedReinsurerMember 2021-09-30 0000230557 sigi:ReinsuranceRecoverableforPaidandUnpaidClaimsandClaimsAdjustmentsGrossMember us-gaap:FinancialAssetNotPastDueMember 2021-09-30 0000230557 sigi:ReinsuranceRecoverableforPaidandUnpaidClaimsandClaimsAdjustmentsGrossMember us-gaap:FinancialAssetPastDueMember 2021-09-30 0000230557 srt:AMBestAPlusPlusRatingMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0000230557 srt:AMBestAPlusPlusRatingMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0000230557 srt:AMBestAPlusPlusRatingMember 2020-12-31 0000230557 srt:AMBestAPlusRatingMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0000230557 srt:AMBestAPlusRatingMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0000230557 srt:AMBestAPlusRatingMember 2020-12-31 0000230557 srt:AMBestARatingMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0000230557 srt:AMBestARatingMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0000230557 srt:AMBestARatingMember 2020-12-31 0000230557 srt:AMBestAMinusRatingMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0000230557 srt:AMBestAMinusRatingMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0000230557 srt:AMBestAMinusRatingMember 2020-12-31 0000230557 us-gaap:FinancialAssetNotPastDueMember srt:AMBestBPlusPlusRatingMember 2020-12-31 0000230557 srt:AMBestBPlusPlusRatingMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0000230557 srt:AMBestBPlusPlusRatingMember 2020-12-31 0000230557 srt:AMBestBPlusRatingMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0000230557 srt:AMBestBPlusRatingMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0000230557 srt:AMBestBPlusRatingMember 2020-12-31 0000230557 sigi:AMBestRatedReinsurerMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0000230557 sigi:AMBestRatedReinsurerMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0000230557 sigi:AMBestRatedReinsurerMember 2020-12-31 0000230557 sigi:TotalfederalandstatepoolsMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0000230557 sigi:TotalfederalandstatepoolsMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0000230557 sigi:TotalfederalandstatepoolsMember 2020-12-31 0000230557 us-gaap:FinancialAssetNotPastDueMember sigi:OtherFederalAndStatePoolsMember 2020-12-31 0000230557 us-gaap:FinancialAssetPastDueMember sigi:OtherFederalAndStatePoolsMember 2020-12-31 0000230557 sigi:OtherFederalAndStatePoolsMember 2020-12-31 0000230557 us-gaap:FinancialAssetNotPastDueMember sigi:TotalNonRatedReinsurerMember 2020-12-31 0000230557 us-gaap:FinancialAssetPastDueMember sigi:TotalNonRatedReinsurerMember 2020-12-31 0000230557 sigi:TotalNonRatedReinsurerMember 2020-12-31 0000230557 sigi:ReinsuranceRecoverableforPaidandUnpaidClaimsandClaimsAdjustmentsGrossMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0000230557 sigi:ReinsuranceRecoverableforPaidandUnpaidClaimsandClaimsAdjustmentsGrossMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0000230557 us-gaap:AccountingStandardsUpdate201613Member sigi:ReinsuranceRecoverableDomain us-gaap:RetainedEarningsMember 2021-06-30 0000230557 us-gaap:AccountingStandardsUpdate201613Member sigi:ReinsuranceRecoverableDomain us-gaap:RetainedEarningsMember 2020-06-30 0000230557 us-gaap:AccountingStandardsUpdate201613Member sigi:ReinsuranceRecoverableDomain us-gaap:RetainedEarningsMember 2020-12-31 0000230557 us-gaap:AccountingStandardsUpdate201613Member sigi:ReinsuranceRecoverableDomain us-gaap:RetainedEarningsMember 2019-12-31 0000230557 sigi:ReinsuranceRecoverableDomain 2021-06-30 0000230557 sigi:ReinsuranceRecoverableDomain 2020-06-30 0000230557 sigi:ReinsuranceRecoverableDomain 2020-12-31 0000230557 sigi:ReinsuranceRecoverableDomain 2019-12-31 0000230557 sigi:DirectAssumedAndCededReinsuranceAmountsMember 2021-07-01 2021-09-30 0000230557 sigi:DirectAssumedAndCededReinsuranceAmountsMember 2020-07-01 2020-09-30 0000230557 sigi:DirectAssumedAndCededReinsuranceAmountsMember 2021-01-01 2021-09-30 0000230557 sigi:DirectAssumedAndCededReinsuranceAmountsMember 2020-01-01 2020-09-30 0000230557 sigi:ReturnauditandmidtermendorsementpremiumMember sigi:COVID19Member 2021-07-01 2021-09-30 0000230557 sigi:ReturnauditandmidtermendorsementpremiumMember sigi:COVID19Member 2020-01-01 2020-03-31 0000230557 sigi:PremiumCreditMember sigi:CommercialPersonalAutomobileMember sigi:COVID19Member 2020-04-01 2020-06-30 0000230557 sigi:NationalFloodInsuranceProgramMember 2021-01-01 2021-09-30 0000230557 sigi:NationalFloodInsuranceProgramMember 2021-07-01 2021-09-30 0000230557 sigi:NationalFloodInsuranceProgramMember 2020-07-01 2020-09-30 0000230557 sigi:NationalFloodInsuranceProgramMember 2020-01-01 2020-09-30 0000230557 sigi:ChangeinHistoricalClaimRateExperienceMember 2021-01-01 2021-09-30 0000230557 sigi:ChangeinHistoricalClaimRateExperienceMember 2020-01-01 2020-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ChangeinHistoricalClaimRateExperienceMember 2021-01-01 2021-09-30 0000230557 us-gaap:GeneralLiabilityMember sigi:CasualtyInsuranceProductLineMember sigi:ChangeinHistoricalClaimRateExperienceMember 2021-01-01 2021-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ChangeinHistoricalClaimRateExperienceMember us-gaap:WorkersCompensationInsuranceMember 2021-01-01 2021-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ChangeinHistoricalClaimRateExperienceMember sigi:ESLinesMember 2021-01-01 2021-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ChangeinHistoricalClaimRateExperienceMember 2020-01-01 2020-09-30 0000230557 us-gaap:PropertyInsuranceProductLineMember sigi:ChangeinHistoricalClaimRateExperienceMember 2020-01-01 2020-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ChangeinHistoricalClaimRateExperienceMember us-gaap:WorkersCompensationInsuranceMember 2020-01-01 2020-09-30 0000230557 us-gaap:GeneralLiabilityMember sigi:CasualtyInsuranceProductLineMember sigi:ChangeinHistoricalClaimRateExperienceMember 2020-01-01 2020-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ChangeinHistoricalClaimRateExperienceMember sigi:CommercialAutomobileMember 2020-01-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:CommercialPropertyMember 2021-07-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:CommercialPropertyMember 2020-07-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:CommercialPropertyMember 2021-01-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:CommercialPropertyMember 2020-01-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:WorkersCompensationMember 2021-07-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:WorkersCompensationMember 2020-07-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:WorkersCompensationMember 2021-01-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:WorkersCompensationMember 2020-01-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember us-gaap:GeneralLiabilityMember 2021-07-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember us-gaap:GeneralLiabilityMember 2020-07-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember us-gaap:GeneralLiabilityMember 2021-01-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember us-gaap:GeneralLiabilityMember 2020-01-01 2020-09-30 0000230557 sigi:CommercialAutomobileMember sigi:StandardCommercialLinesMember 2021-07-01 2021-09-30 0000230557 sigi:CommercialAutomobileMember sigi:StandardCommercialLinesMember 2020-07-01 2020-09-30 0000230557 sigi:CommercialAutomobileMember sigi:StandardCommercialLinesMember 2021-01-01 2021-09-30 0000230557 sigi:CommercialAutomobileMember sigi:StandardCommercialLinesMember 2020-01-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:BusinessOwnersPoliciesMember 2021-07-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:BusinessOwnersPoliciesMember 2020-07-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:BusinessOwnersPoliciesMember 2021-01-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:BusinessOwnersPoliciesMember 2020-01-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember us-gaap:SuretySegmentMember 2021-07-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember us-gaap:SuretySegmentMember 2020-07-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember us-gaap:SuretySegmentMember 2021-01-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember us-gaap:SuretySegmentMember 2020-01-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:OtherCommercialMember 2021-07-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:OtherCommercialMember 2020-07-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:OtherCommercialMember 2021-01-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember sigi:OtherCommercialMember 2020-01-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember 2021-07-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember 2020-07-01 2020-09-30 0000230557 sigi:StandardCommercialLinesMember 2021-01-01 2021-09-30 0000230557 sigi:StandardCommercialLinesMember 2020-01-01 2020-09-30 0000230557 sigi:PersonalAutomobileMember sigi:StandardPersonalLinesMember 2021-07-01 2021-09-30 0000230557 sigi:PersonalAutomobileMember sigi:StandardPersonalLinesMember 2020-07-01 2020-09-30 0000230557 sigi:PersonalAutomobileMember sigi:StandardPersonalLinesMember 2021-01-01 2021-09-30 0000230557 sigi:PersonalAutomobileMember sigi:StandardPersonalLinesMember 2020-01-01 2020-09-30 0000230557 sigi:HomeownersMember sigi:StandardPersonalLinesMember 2021-07-01 2021-09-30 0000230557 sigi:HomeownersMember sigi:StandardPersonalLinesMember 2020-07-01 2020-09-30 0000230557 sigi:HomeownersMember sigi:StandardPersonalLinesMember 2021-01-01 2021-09-30 0000230557 sigi:HomeownersMember sigi:StandardPersonalLinesMember 2020-01-01 2020-09-30 0000230557 sigi:OtherPersonalMember sigi:StandardPersonalLinesMember 2021-07-01 2021-09-30 0000230557 sigi:OtherPersonalMember sigi:StandardPersonalLinesMember 2020-07-01 2020-09-30 0000230557 sigi:OtherPersonalMember sigi:StandardPersonalLinesMember 2021-01-01 2021-09-30 0000230557 sigi:OtherPersonalMember sigi:StandardPersonalLinesMember 2020-01-01 2020-09-30 0000230557 sigi:StandardPersonalLinesMember 2021-07-01 2021-09-30 0000230557 sigi:StandardPersonalLinesMember 2020-07-01 2020-09-30 0000230557 sigi:StandardPersonalLinesMember 2021-01-01 2021-09-30 0000230557 sigi:StandardPersonalLinesMember 2020-01-01 2020-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ESLinesMember 2021-07-01 2021-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ESLinesMember 2020-07-01 2020-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ESLinesMember 2021-01-01 2021-09-30 0000230557 sigi:CasualtyInsuranceProductLineMember sigi:ESLinesMember 2020-01-01 2020-09-30 0000230557 us-gaap:PropertyInsuranceProductLineMember sigi:ESLinesMember 2021-07-01 2021-09-30 0000230557 us-gaap:PropertyInsuranceProductLineMember sigi:ESLinesMember 2020-07-01 2020-09-30 0000230557 us-gaap:PropertyInsuranceProductLineMember sigi:ESLinesMember 2021-01-01 2021-09-30 0000230557 us-gaap:PropertyInsuranceProductLineMember sigi:ESLinesMember 2020-01-01 2020-09-30 0000230557 sigi:ESLinesMember 2021-07-01 2021-09-30 0000230557 sigi:ESLinesMember 2020-07-01 2020-09-30 0000230557 sigi:ESLinesMember 2021-01-01 2021-09-30 0000230557 sigi:ESLinesMember 2020-01-01 2020-09-30 0000230557 sigi:InvestmentsSIGIMember 2021-07-01 2021-09-30 0000230557 sigi:InvestmentsSIGIMember 2020-07-01 2020-09-30 0000230557 sigi:InvestmentsSIGIMember 2021-01-01 2021-09-30 0000230557 sigi:InvestmentsSIGIMember 2020-01-01 2020-09-30 0000230557 sigi:OperatingSegmentsSIGIMember 2021-07-01 2021-09-30 0000230557 sigi:OperatingSegmentsSIGIMember 2020-07-01 2020-09-30 0000230557 sigi:OperatingSegmentsSIGIMember 2021-01-01 2021-09-30 0000230557 sigi:OperatingSegmentsSIGIMember 2020-01-01 2020-09-30 0000230557 us-gaap:PensionPlansDefinedBenefitMember 2021-07-01 2021-09-30 0000230557 us-gaap:PensionPlansDefinedBenefitMember 2020-07-01 2020-09-30 0000230557 us-gaap:PensionPlansDefinedBenefitMember 2021-01-01 2021-09-30 0000230557 us-gaap:PensionPlansDefinedBenefitMember 2020-01-01 2020-09-30 0000230557 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2020-12-31 0000230557 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember us-gaap:HeldtomaturitySecuritiesMember 2020-12-31 0000230557 us-gaap:AvailableforsaleSecuritiesMember 2020-12-31 0000230557 us-gaap:InvestmentsMember 2020-12-31 0000230557 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2020-12-31 0000230557 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2021-01-01 2021-09-30 0000230557 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember us-gaap:HeldtomaturitySecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:AvailableforsaleSecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:InvestmentsMember 2021-01-01 2021-09-30 0000230557 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2021-01-01 2021-09-30 0000230557 us-gaap:AccumulatedOtherThanTemporaryImpairmentMember 2021-09-30 0000230557 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember us-gaap:HeldtomaturitySecuritiesMember 2021-09-30 0000230557 us-gaap:AvailableforsaleSecuritiesMember 2021-09-30 0000230557 us-gaap:InvestmentsMember 2021-09-30 0000230557 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2021-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:HeldtomaturitySecuritiesMember 2021-07-01 2021-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:HeldtomaturitySecuritiesMember 2020-07-01 2020-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:HeldtomaturitySecuritiesMember 2021-01-01 2021-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:HeldtomaturitySecuritiesMember 2020-01-01 2020-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember 2021-07-01 2021-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember 2020-07-01 2020-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember 2021-01-01 2021-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParentMember 2020-01-01 2020-09-30 0000230557 us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2021-07-01 2021-09-30 0000230557 us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-07-01 2020-09-30 0000230557 us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2021-01-01 2021-09-30 0000230557 us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-09-30 0000230557 us-gaap:PensionPlansDefinedBenefitMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2021-07-01 2021-09-30 0000230557 us-gaap:PensionPlansDefinedBenefitMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-07-01 2020-09-30 0000230557 us-gaap:PensionPlansDefinedBenefitMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2021-01-01 2021-09-30 0000230557 us-gaap:PensionPlansDefinedBenefitMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2021-07-01 2021-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-07-01 2020-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2021-01-01 2021-09-30 0000230557 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-09-30 0000230557 2020-12-02
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM 10-Q
(Mark One)
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended: September 30, 2021
or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from_____________________________to_____________________________
Commission File Number: 001-33067
SELECTIVE INSURANCE GROUP, INC .
(Exact Name of Registrant as Specified in Its Charter)

New Jersey 22-2168890
(State or Other Jurisdiction of Incorporation or Organization) (I.R.S. Employer Identification No.)

40 Wantage Avenue
Branchville , New Jersey 07890
(Address of Principal Executive Offices) (Zip Code)

973 948-3000
(Registrant’s Telephone Number, Including Area Code)
(Former Name, Former Address and Former Fiscal Year, if Changed Since Last Report)

Securities registered pursuant to Section 12(b) of the Act:
Title of each class Trading Symbol (s) Name of each exchange on which registered
Common Stock, par value $2 per share SIGI The Nasdaq Stock Market LLC
Depositary Shares, each representing a 1/1,000th interest in a share of 4.60% Non-Cumulative Preferred Stock, Series B, without par value SIGIP The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer
Accelerated filer
Non-accelerated filer
Smaller reporting company
Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Yes No
As of October 15, 2021, there were 60,123,535 shares of common stock, par value $2.00 per share, outstanding.


SELECTIVE INSURANCE GROUP, INC.
Table of Contents
Page No.


PART I. FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS.

SELECTIVE INSURANCE GROUP, INC.
CONSOLIDATED BALANCE SHEETS
Unaudited
($ in thousands, except share amounts) September 30, 2021 December 31,
2020
ASSETS
Investments:
Fixed income securities, held-to-maturity – at carrying value (fair value: $ 26,037 – 2021; $ 18,001 – 2020)
$ 25,323 16,846
Less: allowance for credit losses ( 71 ) ( 22 )
Fixed income securities, held-to-maturity, net of allowance for credit losses 25,252 16,824
Fixed income securities, available-for-sale – at fair value
(allowance for credit losses: $7,169 – 2021 and $ 3,969 – 2020; amortized cost: $ 6,401,167 – 2021 and $ 6,073,517 – 2020)
6,677,070 6,455,928
Commercial mortgage loans – at carrying value (fair value: $ 86,001 – 2021 and $ 47,289 – 2020)
83,993 46,306
Less: allowance for credit losses
Commercial mortgage loans, net of allowance for credit losses 83,993 46,306
Equity securities – at fair value (cost:  $ 299,541 – 2021; $ 301,551 – 2020)
324,186 310,367
Short-term investments 355,937 409,852
Other investments 392,788 266,322
Total investments (Note 4 and 5) $ 7,859,226 7,505,599
Cash 477 394
Restricted cash 34,312 14,837
Interest and dividends due or accrued 46,082 45,004
Premiums receivable 1,001,331 857,014
Less: allowance for credit losses (Note 6) ( 16,500 ) ( 21,000 )
Premiums receivable, net of allowance for credit losses 984,831 836,014
Reinsurance recoverable 687,812 589,269
Less: allowance for credit losses (Note 7) ( 1,595 ) ( 1,777 )
Reinsurance recoverable, net of allowance for credit losses 686,217 587,492
Prepaid reinsurance premiums 187,969 170,531
Current federal income tax 1,220
Property and equipment – at cost, net of accumulated depreciation and amortization of:
$ 256,826 – 2021; $ 240,150 – 2020
75,014 77,696
Deferred policy acquisition costs 333,995 288,578
Goodwill 7,849 7,849
Other assets 224,982 153,919
Total assets $ 10,442,174 9,687,913
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Reserve for loss and loss expense (Note 8) $ 4,610,340 4,260,355
Unearned premiums 1,847,273 1,618,271
Long-term debt 500,904 550,743
Current federal income tax 14,021
Deferred federal income tax 3,215 27,096
Accrued salaries and benefits 113,708 114,868
Other liabilities 444,638 363,670
Total liabilities $ 7,520,078 6,949,024
Stockholders’ Equity:
Preferred stock of $ 0 par value per share:
$ 200,000 200,000
Authorized shares 5,000,000 ; Issued shares: 8,000 with $ 25,000 liquidation preference per share - 2021 and 2020
Common stock of $ 2 par value per share:
Authorized shares 360,000,000
Issued: 104,389,125 – 2021; 104,032,912 – 2020
208,778 208,066
Additional paid-in capital 458,143 438,985
Retained earnings 2,523,810 2,271,537
Accumulated other comprehensive income (Note 11) 140,224 220,186
Treasury stock – at cost (shares: 44,265,590 – 2021; 44,127,109 – 2020) (Note 12)
( 608,859 ) ( 599,885 )
Total stockholders’ equity $ 2,922,096 2,738,889
Commitments and contingencies
Total liabilities and stockholders’ equity $ 10,442,174 9,687,913

The accompanying notes are an integral part of these unaudited interim consolidated financial statements.
1

SELECTIVE INSURANCE GROUP, INC.
UNAUDITED CONSOLIDATED STATEMENTS OF INCOME
Quarter ended September 30, Nine Months ended September 30,
($ in thousands, except per share amounts) 2021 2020 2021 2020
Revenues:
Net premiums earned $ 767,247 694,541 $ 2,232,725 1,976,915
Net investment income earned 93,032 68,185 246,479 158,596
Net realized and unrealized investment gains (losses) 177 7,721 15,353 ( 24,296 )
Other income 4,588 6,119 14,912 12,627
Total revenues 865,044 776,566 2,509,469 2,123,842
Expenses:
Loss and loss expense incurred 505,269 447,802 1,340,293 1,252,075
Amortization of deferred policy acquisition costs 160,868 142,291 464,276 415,723
Other insurance expenses 94,759 89,530 278,531 269,477
Interest expense 7,242 7,781 21,967 23,310
Corporate expenses 4,270 3,905 22,936 19,310
Total expenses 772,408 691,309 2,128,003 1,979,895
Income before federal income tax 92,636 85,257 381,466 143,947
Federal income tax expense:
Current 18,878 17,412 79,319 25,948
Deferred 53 ( 2,030 ) ( 2,711 ) ( 1,295 )
Total federal income tax expense 18,931 15,382 76,608 24,653
Net income $ 73,705 69,875 $ 304,858 119,294
Preferred stock dividends 2,300 7,053
Net income available to common stockholders $ 71,405 69,875 $ 297,805 119,294
Earnings per common share:
Net income available to common stockholders - Basic $ 1.19 1.17 $ 4.95 1.99
Net income available to common stockholders - Diluted $ 1.18 1.16 $ 4.92 1.98
The accompanying notes are an integral part of these unaudited interim consolidated financial statements.


2

SELECTIVE INSURANCE GROUP, INC.
UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Net income $ 73,705 69,875 $ 304,858 119,294
Other comprehensive income (loss) ("OCI"), net of tax:
Unrealized (losses) gains on investment securities:
Unrealized holding (losses) gains arising during period ( 27,875 ) 29,889 ( 81,402 ) 104,771
Unrealized (losses) gains on securities with credit loss recognized in earnings ( 1,851 ) 7,299 ( 2,906 ) ( 14,751 )
Amounts reclassified into net income:
Held-to-maturity ("HTM") securities 1 ( 3 ) ( 5 )
Net realized (gains) losses on disposals and intent-to-sell available-for-sale ("AFS") securities ( 1,024 ) ( 406 ) ( 501 ) 7,210
Credit loss (benefit) expense 1,054 ( 2,254 ) 3,207 6,328
Total unrealized (losses) gains on investment securities ( 29,695 ) 34,528 ( 81,605 ) 103,553
Defined benefit pension and post-retirement plans:
Amounts reclassified into net income:
Net actuarial loss 548 596 1,643 1,787
Total defined benefit pension and post-retirement plans
548 596 1,643 1,787
Other comprehensive (loss) income ( 29,147 ) 35,124 ( 79,962 ) 105,340
Comprehensive income $ 44,558 104,999 $ 224,896 224,634
The accompanying notes are an integral part of these unaudited interim consolidated financial statements.


3

SELECTIVE INSURANCE GROUP, INC.
UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
Quarter ended September 30, Nine Months ended September 30,
($ in thousands, except share and per share amounts) 2021 2020 2021 2020
Preferred stock:
Beginning of period $ 200,000 $ 200,000
Issuance of preferred stock
End of period 200,000 200,000
Common stock:
Beginning of period 208,742 207,875 208,066 206,968
Dividend reinvestment plan 10 14 34 44
Stock purchase and compensation plans 26 34 678 911
End of period 208,778 207,923 208,778 207,923
Additional paid-in capital:
Beginning of period 454,459 435,019 438,985 418,521
Dividend reinvestment plan 416 401 1,261 1,216
Stock purchase and compensation plans 3,268 3,454 17,897 19,137
End of period 458,143 438,874 458,143 438,874
Retained earnings:
Beginning of period, as previously reported 2,467,596 2,103,629 2,271,537 2,080,529
Cumulative effect adjustment due to adoption of guidance on allowance for credit losses, net of tax 1,435
Balance at beginning of period, as adjusted 2,467,596 2,103,629 2,271,537 2,081,964
Net income 73,705 69,875 304,858 119,294
Dividends to preferred stockholders ( 2,300 ) ( 7,053 )
Dividends to common stockholders ( 15,191 ) ( 13,907 ) ( 45,532 ) ( 41,661 )
End of period 2,523,810 2,159,597 2,523,810 2,159,597
Accumulated other comprehensive income (loss) ("AOCI"):
Beginning of period 169,371 151,966 220,186 81,750
Other comprehensive (loss) income ( 29,147 ) 35,124 ( 79,962 ) 105,340
End of period 140,224 187,090 140,224 187,090
Treasury stock:
Beginning of period ( 608,801 ) ( 599,814 ) ( 599,885 ) ( 592,832 )
Acquisition of treasury stock - share repurchase authorization ( 3,404 )
Acquisition of treasury stock - shares acquired related to employee-share based compensation plans ( 58 ) ( 57 ) ( 5,570 ) ( 7,039 )
End of period ( 608,859 ) ( 599,871 ) ( 608,859 ) ( 599,871 )
Total stockholders’ equity $ 2,922,096 2,393,613 $ 2,922,096 2,393,613
Dividends declared per preferred share $ 287.50 $ 881.67
Dividends declared per common share $ 0.25 0.23 $ 0.75 0.69
Preferred stock, shares outstanding:
Beginning of period 8,000 8,000
Issuance of preferred stock
End of period 8,000 8,000
Common stock, shares outstanding:
Beginning of period 60,106,236 59,811,742 59,905,803 59,461,153
Dividend reinvestment plan 5,096 7,026 17,152 21,900
Stock purchase and compensation plan 12,946 16,936 339,061 455,537
Acquisition of treasury stock - share repurchase authorization ( 52,781 )
Acquisition of treasury stock - shares acquired related to employee share-based compensation plans ( 743 ) ( 1,002 ) ( 85,700 ) ( 103,888 )
End of period 60,123,535 59,834,702 60,123,535 59,834,702

The accompanying notes are an integral part of these unaudited interim consolidated financial statements.

4

SELECTIVE INSURANCE GROUP, INC.
UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS
Nine Months ended September 30,
($ in thousands) 2021 2020
Operating Activities
Net income $ 304,858 119,294
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization 40,706 44,435
Stock-based compensation expense 13,431 13,935
Undistributed gains of equity method investments ( 65,215 ) ( 5,146 )
Distributions in excess of current year income of equity method investments 2,750 3,136
Net realized and unrealized (gains) losses ( 15,353 ) 24,296
Loss on disposal of fixed assets 50 17
Changes in assets and liabilities:
Increase in reserve for loss and loss expense, net of reinsurance recoverable 251,260 190,796
Increase in unearned premiums, net of prepaid reinsurance 211,564 114,672
Increase in net federal income taxes ( 17,866 ) ( 10,775 )
Increase in premiums receivable ( 148,817 ) ( 28,239 )
Increase in deferred policy acquisition costs ( 45,417 ) ( 21,523 )
Increase in interest and dividends due or accrued ( 1,249 ) ( 1,507 )
Decrease in accrued salaries and benefits ( 1,160 ) ( 33,677 )
Increase in other assets ( 22,045 ) ( 23,388 )
Increase (decrease) in other liabilities 35,806 ( 5,443 )
Net cash provided by operating activities 543,303 380,883
Investing Activities
Purchase of fixed income securities, held-to-maturity ( 11,250 )
Purchase of fixed income securities, available-for-sale ( 1,660,798 ) ( 1,373,226 )
Purchase of commercial mortgage loans ( 38,129 ) ( 29,800 )
Purchase of equity securities ( 82,223 ) ( 87,307 )
Purchase of other investments ( 63,661 ) ( 61,051 )
Purchase of short-term investments ( 3,443,597 ) ( 4,475,128 )
Sale of fixed income securities, available-for-sale 384,586 411,263
Proceeds from commercial mortgage loans 442 109
Sale of short-term investments 3,497,243 4,377,024
Redemption and maturities of fixed income securities, held-to-maturity 2,735 1,646
Redemption and maturities of fixed income securities, available-for-sale 910,741 738,238
Sale of equity securities 85,373 1,320
Sale of other investments 5,377 3,879
Distributions from other investments 10,524 12,890
Purchase of property and equipment ( 15,123 ) ( 17,858 )
Net cash used in investing activities ( 417,760 ) ( 498,001 )
Financing Activities
Dividends to preferred stockholders ( 7,053 )
Dividends to common stockholders ( 43,756 ) ( 39,972 )
Acquisition of treasury stock ( 8,974 ) ( 7,039 )
Net proceeds from stock purchase and compensation plans 4,575 5,478
Preferred stock issued, net of issuance costs ( 479 )
Proceeds from borrowings 487,000
Repayments of borrowings ( 50,000 ) ( 320,000 )
Repayments of finance lease obligations ( 298 ) ( 429 )
Net cash (used in) provided by financing activities ( 105,985 ) 125,038
Net increase in cash and restricted cash 19,558 7,920
Cash and restricted cash, beginning of year 15,231 7,975
Cash and restricted cash, end of period $ 34,789 15,895

The accompanying notes are an integral part of these unaudited interim consolidated financial statements.
5

NOTES TO UNAUDITED INTERIM CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1. Basis of Presentation
The words "Company,” “we,” “us,” or “our” refer to Selective Insurance Group, Inc. (the "Parent") and its subsidiaries, except as expressly indicated or the context requires otherwise. We have prepared our interim unaudited consolidated financial statements (“Financial Statements”) in conformity with U.S. generally accepted accounting principles (“GAAP”) and the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. These require us to make estimates and assumptions that affect the reported financial statement balances and the disclosure of contingent assets and liabilities. Actual results could differ from those estimates. All significant intercompany accounts and transactions between the Parent and its subsidiaries are eliminated in consolidation.

Our Financial Statements reflect all adjustments that, in our opinion, are normal, recurring, and necessary for a fair presentation of our results of operations and financial condition. Our Financial Statements cover the third quarters ended September 30, 2021 (“Third Quarter 2021”) and September 30, 2020 (“Third Quarter 2020”) and the nine-month periods ended September 30, 2021 (“Nine Months 2021”) and September 30, 2020 (“Nine Months 2020”). Our Financial Statements do not include all information and disclosures required by GAAP and the SEC for audited annual financial statements. Because results of operations for any interim period are not necessarily indicative of results for a full year, our Financial Statements should be read in conjunction with the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2020 (“2020 Annual Report”) filed with the SEC.

NOTE 2. Adoption of Accounting Pronouncements
In December 2019, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2019-12, Income Taxes - Simplifying the Accounting for Income Taxes (“ASU 2019-12”). Among other items, ASU 2019-12 simplifies the accounting treatment of tax law changes and year-to-date losses in interim periods. An entity generally recognizes the effects of a change in tax law in the period of enactment; however, there is an exception for tax laws with delayed effective dates. Under current guidance, an entity may not adjust its annual effective tax rate for a tax law change until the period in which the law is effective. ASU 2019-12 provides that all effects of a tax law change, including adjustment of the estimated annual effective tax rate, are recognized in the period of enactment.

For year-to-date losses in interim periods, an entity is required currently to estimate its annual effective tax rate for the full fiscal year at the end of each interim period and use that rate to calculate its income taxes on a year-to-date basis. When an interim period loss exceeds the anticipated loss for the year, the income tax benefit is limited to the amount that would be recognized if the year-to-date loss were the anticipated loss for the full year. ASU 2019-12 removes this limitation and an entity would compute its income tax benefit at each interim period based on its estimated annual effective tax rate.

We adopted this guidance on January 1, 2021, and it did not have a material impact to our financial condition, cash flows, or results of operations.

Pronouncements to be effective in the future
In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848) - Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASU 2020-04”). ASU 2020-04 provides optional expedients and exceptions to the guidance in GAAP on contract modifications and hedge accounting to ease the financial reporting burdens related to the expected market transition away from the London Interbank Offered Rate ("LIBOR") and other interbank offered rates to alternative reference rates. Companies can elect to adopt ASU 2020-04 as of the beginning of the interim period that includes March 2020, or any date thereafter through December 31, 2022. We are currently evaluating the impact of this guidance on our financial condition and results of operations.

6

NOTE 3. Statements of Cash Flows
Supplemental cash flow information was as follows:
Nine Months ended September 30,
($ in thousands) 2021 2020
Cash paid during the period for:
Interest $ 23,278 24,449
Federal income tax 93,000 34,000
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases 6,480 7,077
Operating cash flows from financing leases 5 13
Financing cash flows from finance leases 298 429
Non-cash items:
Corporate actions related to fixed income securities, AFS 1
50,501 32,580
Corporate actions related to fixed income securities, HTM 1
2,596
Corporate actions related to equity securities 1
527 890
Assets acquired under finance lease arrangements 183 119
Assets acquired under operating lease arrangements 273 22,104
Non-cash purchase of property and equipment 9
1 Examples of corporate actions include exchanges, non-cash acquisitions, and stock splits.

The following table reconciles cash and restricted cash reported in the Consolidated Balance Sheets to the Consolidated Statements of Cash Flows:
($ in thousands) September 30, 2021 December 31, 2020
Cash $ 477 394
Restricted cash 34,312 14,837
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows $ 34,789 15,231

Amounts included in restricted cash represent cash received from the National Flood Insurance Program ("NFIP"), which is restricted to pay flood claims under the Write Your Own program.

NOTE 4. Investments
(a) Information about our AFS securities as of September 30, 2021, and December 31, 2020, was as follows:
September 30, 2021
($ in thousands) Cost/
Amortized
Cost
Allowance for Credit Losses Unrealized
Gains
Unrealized
Losses
Fair
Value
AFS fixed income securities:
U.S. government and government agencies $ 128,415 3,600 ( 957 ) 131,058
Foreign government 14,567 ( 47 ) 695 ( 75 ) 15,140
Obligations of states and political subdivisions 1,094,619 ( 99 ) 71,507 ( 103 ) 1,165,924
Corporate securities 2,420,904 ( 4,719 ) 131,442 ( 3,101 ) 2,544,526
Collateralized loan obligations ("CLO") and other asset-backed securities ("ABS") 1,326,348 ( 926 ) 18,896 ( 4,517 ) 1,339,801
Residential mortgage-backed securities ("RMBS")
785,840 ( 1,363 ) 33,361 ( 1,056 ) 816,782
Commercial mortgage-backed securities ("CMBS") 630,474 ( 15 ) 34,465 ( 1,085 ) 663,839
Total AFS fixed income securities $ 6,401,167 ( 7,169 ) 293,966 ( 10,894 ) 6,677,070
7

December 31, 2020
($ in thousands) Cost/
Amortized
Cost
Allowance for Credit Losses Unrealized
Gains
Unrealized
Losses
Fair
Value
AFS fixed income securities:
U.S. government and government agencies $ 110,038 6,239 ( 137 ) 116,140
Foreign government 16,801 ( 1 ) 1,569 ( 3 ) 18,366
Obligations of states and political subdivisions 1,159,588 ( 4 ) 87,564 ( 11 ) 1,247,137
Corporate securities 2,152,203 ( 2,782 ) 180,971 ( 2,340 ) 2,328,052
CLO and other ABS 1,014,820 ( 592 ) 20,166 ( 7,843 ) 1,026,551
RMBS 999,485 ( 561 ) 53,065 ( 201 ) 1,051,788
CMBS 620,582 ( 29 ) 48,348 ( 1,007 ) 667,894
Total AFS fixed income securities
$ 6,073,517 ( 3,969 ) 397,922 ( 11,542 ) 6,455,928

The following tables provide a roll forward of the allowance for credit losses on our AFS fixed income securities for the periods indicated:
Quarter ended September 30, 2021
($ in thousands) Beginning Balance Current Provision for Securities without Prior Allowance Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities Reductions for Securities Sold Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period Ending Balance
Foreign government $ 49 ( 2 ) 47
Obligations of states and political subdivisions 38 61 99
Corporate securities 3,477 1,307 64 ( 49 ) ( 80 ) 4,719
CLO and other ABS 1,399 46 ( 517 ) ( 2 ) 926
RMBS 1,034 248 125 ( 44 ) 1,363
CMBS 14 4 ( 3 ) 15
Total AFS fixed income securities $ 6,011 1,666 ( 333 ) ( 95 ) ( 80 ) 7,169

Quarter ended September 30, 2020
($ in thousands) Beginning Balance Current Provision for Securities without Prior Allowance Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities Reductions for Securities Sold Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period Ending Balance
Foreign government $ 28 ( 2 ) ( 19 ) 7
Obligations of states and political subdivisions 17 9 ( 11 ) 15
Corporate securities 8,077 1,016 ( 3,455 ) ( 265 ) ( 15 ) 5,358
CLO and other ABS 1,389 ( 210 ) ( 51 ) ( 7 ) 1,121
RMBS 831 ( 157 ) ( 27 ) 647
CMBS 53 ( 21 ) 32
Total AFS fixed income securities $ 10,395 1,025 ( 3,856 ) ( 362 ) ( 22 ) 7,180

Nine Months ended September 30, 2021
($ in thousands) Beginning Balance Current Provision for Securities without Prior Allowance Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities Reductions for Securities Sold Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period Ending Balance
Foreign government $ 1 47 ( 1 ) 47
Obligations of states and political subdivisions 4 84 11 99
Corporate securities 2,782 3,413 ( 765 ) ( 570 ) ( 141 ) 4,719
CLO and other ABS 592 573 ( 219 ) ( 20 ) 926
RMBS 561 1,018 ( 95 ) ( 121 ) 1,363
CMBS 29 4 ( 18 ) 15
Total AFS fixed income securities $ 3,969 5,139 ( 1,087 ) ( 711 ) ( 141 ) 7,169





8

Nine Months ended September 30, 2020
($ in thousands) Beginning Balance Current Provision for Securities without Prior Allowance Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities Reductions for Securities Sold Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period Ending Balance
Foreign government $ 26 ( 19 ) 7
Obligations of states and political subdivisions 15 15
Corporate securities 6,100 ( 659 ) ( 83 ) 5,358
CLO and other ABS 1,237 ( 109 ) ( 7 ) 1,121
RMBS 690 ( 43 ) 647
CMBS 32 32
Total AFS fixed income securities $ 8,100 ( 830 ) ( 90 ) 7,180

For information on our methodology and significant inputs used to measure expected credit losses, our accounting policy for recognizing write-offs of uncollectible amounts, and our treatment of accrued interest, refer to Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2020 Annual Report. Accrued interest on AFS securities was $ 44.9 million as of September 30, 2021, and $ 43.8 million as of December 31, 2020. We did not record any material write-offs during 2021 or 2020.

(b) Quantitative information about unrealized losses on our AFS portfolio is provided below.

September 30, 2021 Less than 12 months 12 months or longer Total
($ in thousands) Fair Value Unrealized
Losses
Fair Value Unrealized
Losses
Fair Value Unrealized
Losses
AFS fixed income securities:
U.S. government and government agencies $ 34,717 ( 940 ) 156 ( 17 ) 34,873 ( 957 )
Foreign government 3,114 ( 75 ) 3,114 ( 75 )
Obligations of states and political subdivisions 7,936 ( 103 ) 7,936 ( 103 )
Corporate securities 236,164 ( 3,067 ) 2,412 ( 34 ) 238,576 ( 3,101 )
CLO and other ABS 515,458 ( 3,723 ) 57,153 ( 794 ) 572,611 ( 4,517 )
RMBS 111,648 ( 1,055 ) 20 ( 1 ) 111,668 ( 1,056 )
CMBS 75,714 ( 941 ) 8,286 ( 144 ) 84,000 ( 1,085 )
Total AFS fixed income securities $ 984,751 ( 9,904 ) 68,027 ( 990 ) 1,052,778 ( 10,894 )

December 31, 2020 Less than 12 months 12 months or longer Total
($ in thousands) Fair
Value
Unrealized
Losses
Fair Value Unrealized
Losses
Fair Value Unrealized
Losses
AFS fixed income securities:
U.S. government and government agencies $ 11,519 ( 137 ) 11,519 ( 137 )
Foreign government 1,122 ( 3 ) 1,122 ( 3 )
Obligations of states and political subdivisions 2,223 ( 11 ) 2,223 ( 11 )
Corporate securities 65,187 ( 2,152 ) 2,400 ( 188 ) 67,587 ( 2,340 )
CLO and other ABS 261,746 ( 2,995 ) 165,661 ( 4,848 ) 427,407 ( 7,843 )
RMBS 18,227 ( 194 ) 1,181 ( 7 ) 19,408 ( 201 )
CMBS 55,482 ( 616 ) 16,093 ( 391 ) 71,575 ( 1,007 )
Total AFS fixed income securities $ 415,506 ( 6,108 ) 185,335 ( 5,434 ) 600,841 ( 11,542 )

We do not currently intend to sell any of the securities reflected in the tables above, nor do we expect that we will be required to sell any of these securities. The decrease in gross unrealized losses during Nine Months 2021 was driven by a tightening of credit spreads, partially offset by an increase in longer-dated benchmark United States Treasury rates. Considering these factors and our review of these securities under our credit loss policy as described in Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2020 Annual Report, we have concluded that no allowance for credit loss is required on these balances. This conclusion reflects our current judgment about the financial position and future prospects of the entity that issued the investment security and underlying collateral.

9

(c) Fixed income securities at September 30, 2021 are summarized below by contractual maturity. Mortgage-backed securities are reflected in the table using the estimated average life of each security. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations, with or without call or prepayment penalties.
AFS HTM
($ in thousands) Fair Value Carrying Value Fair Value
Due in one year or less $ 511,751 32 33
Due after one year through five years 3,389,351 14,548 15,340
Due after five years through 10 years 2,101,275 10,672 10,664
Due after 10 years 674,693
Total fixed income securities $ 6,677,070 25,252 26,037

(d) The following table summarizes our other investment portfolio by strategy:
Other Investments September 30, 2021 December 31, 2020
($ in thousands) Carrying Value Remaining Commitment
Maximum Exposure to Loss 1
Carrying Value Remaining Commitment
Maximum Exposure to Loss 1
Alternative Investments
Private equity $ 257,160 103,792 360,952 157,276 100,905 258,181
Private credit 62,462 91,991 154,453 54,017 98,330 152,347
Real assets 22,870 23,466 46,336 19,659 16,493 36,152
Total alternative investments 342,492 219,249 561,741 230,952 215,728 446,680
Other securities 50,296 50,296 35,370 35,370
Total other investments $ 392,788 219,249 612,037 266,322 215,728 482,050
1 The maximum exposure to loss includes both the carry value of these investments and the related remaining commitments. In addition, tax credits that have been previously recognized in Other securities are subject to the risk of recapture, which we do not consider significant.

We are contractually committed to make additional investments up to the remaining commitments stated above. We have not provided any non-contractual financial support at any time during 2021 or 2020.

The following table shows gross summarized financial information for our other investments portfolio, including the portion we do not own. The majority of these investments are carried under the equity method of accounting and report results to us on a one-quarter lag. The following table provides (i) the gross summarized financial statement information for these investments for the three and nine-months ended June 30, and (ii) the portion of these results included in our Third Quarter and Nine Months results:
Income Statement Information Quarter ended September 30, Nine Months ended September 30,
($ in millions) 2021 2020 2021 2020
Net investment income $ 60.4 83.4 $ 550.3 92.9
Realized gains 1,857.6 731.3 4,026.2 1,075.0
Net change in unrealized appreciation 11,188.2 2,230.4 20,767.9 571.6
Net income $ 13,106.2 3,045.1 $ 25,344.4 1,739.5
Alternative investment income included in "Net investment income earned" on our Consolidated Statements of Income $ 42.8 18.7 $ 92.9 8.9

(e) Certain of our insurance subsidiaries, as members of the Federal Home Loan Bank of Indianapolis ("FHLBI") and the Federal Home Loan Bank of New York ("FHLBNY"), have pledged certain AFS fixed income securities as collateral. Additionally, to comply with insurance laws, certain of our insurance subsidiaries have deposited certain securities with various state and regulatory agencies at September 30, 2021. We retain all rights regarding all securities pledged as collateral. The following table summarizes the market value of these securities at September 30, 2021:
($ in millions) FHLBI Collateral FHLBNY Collateral State and
Regulatory Deposits
Total
U.S. government and government agencies $ 22.1 22.1
Obligations of states and political subdivisions 4.0 4.0
RMBS 67.8 44.8 112.6
CMBS 6.6 14.6 21.2
Total pledged as collateral $ 74.4 59.4 26.1 159.9

(f) We did not have exposure to any credit concentration risk of a single issuer greater than 10 % of our stockholders' equity, other than certain U.S. government-backed investments, as of September 30, 2021, or December 31, 2020.
10

(g) The components of pre-tax net investment income earned were as follows:
Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Fixed income securities $ 51,683 51,285 $ 157,114 152,617
Commercial mortgage loans ("CMLs") 683 245 1,892 463
Equity securities 2,955 1,948 8,425 5,523
Short-term investments 64 244 204 1,830
Other investments 42,865 18,671 93,158 9,167
Investment expenses ( 5,218 ) ( 4,208 ) ( 14,314 ) ( 11,004 )
Net investment income earned $ 93,032 68,185 $ 246,479 158,596
The increases in net investment income earned in Third Quarter and Nine Months 2021 compared to the prior year periods were driven by the alternative investments in our other investments portfolio. The results principally reflect unrealized gains on our private equity holdings that benefited from the upward movement in private market valuations in the three and nine-month periods ending June 30, 2021, as our results on these holdings are recorded on a one-quarter lag.

(h) The following table summarizes net realized and unrealized gains and losses for the periods indicated:
Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Gross gains on sales $ 7,151 2,975 $ 12,906 15,129
Gross losses on sales ( 2,505 ) ( 2,402 ) ( 8,787 ) ( 7,841 )
Net realized gains on disposals 4,646 573 4,119 7,288
Net unrealized (losses) gains on equity securities ( 3,111 ) 4,338 15,830 ( 7,098 )
Net credit loss (expense) benefit on fixed income securities, AFS ( 1,334 ) 2,853 ( 4,059 ) ( 8,011 )
Net credit loss benefit (expense) on fixed income securities, HTM 6 3 ( 54 ) 4
Net credit loss benefit (expense) on CMLs ( 2 ) ( 220 )
Losses on securities for which we have the intent to sell ( 30 ) ( 44 ) ( 483 ) ( 16,259 )
Net realized and unrealized gains (losses) $ 177 7,721 $ 15,353 ( 24,296 )

Unrealized gains (losses) recognized in income on equity securities, as reflected in the table above, include the following:
Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Unrealized gains (losses) recognized in income on equity securities:
On securities remaining in our portfolio at period end $ 269 4,338 $ 14,767 ( 7,101 )
On securities sold during period ( 3,380 ) 1,063 3
Total unrealized (losses) gains recognized in income on equity securities $ ( 3,111 ) 4,338 $ 15,830 ( 7,098 )

The improvement in net realized and unrealized gains in Nine Months 2021 compared to Nine Months 2020 was primarily driven by (i) unrealized gains on our equity securities compared to unrealized losses last year, driven by COVID-19-related market disruption, and (ii) lower intent-to-sell losses given the significant trading flexibility we allowed our investment managers given last year's market conditions.

11

NOTE 5. Fair Value Measurements
The financial assets in our investment portfolio are primarily measured at fair value as disclosed on the Consolidated Balance Sheets. The following table presents the carrying amounts and estimated fair values of our financial liabilities as of September 30, 2021, and December 31, 2020:
September 30, 2021 December 31, 2020
($ in thousands) Carrying Amount Fair Value Carrying Amount Fair Value
Financial Liabilities
Long-term debt:
7.25% Senior Notes $ 49,917 64,955 49,914 66,148
6.70% Senior Notes 99,514 127,279 99,499 127,886
5.375% Senior Notes 294,307 382,961 294,241 383,669
1.61% borrowings from FHLBNY 25,000 25,182
1.56% borrowings from FHLBNY 25,000 25,198
3.03% borrowings from FHLBI 60,000 65,109 60,000 67,513
Subtotal long-term debt 503,738 640,304 553,654 695,596
Unamortized debt issuance costs ( 3,228 ) ( 3,419 )
Finance lease obligations 394 508
Total long-term debt $ 500,904 550,743

For a discussion of the fair value hierarchy and techniques used to value our financial assets and liabilities, refer to Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2020 Annual Report.

The following tables provide quantitative disclosures of our financial assets that were measured and recorded at fair value at September 30, 2021, and December 31, 2020:
September 30, 2021 Fair Value Measurements Using
($ in thousands) Assets
Measured at
Fair Value
Quoted Prices in
Active Markets for
Identical Assets/
Liabilities (Level 1)
Significant Other
Observable
Inputs
(Level 2)
Significant Unobservable
Inputs
(Level 3)
Description
Measured on a recurring basis:
AFS fixed income securities:
U.S. government and government agencies $ 131,058 59,264 71,794
Foreign government 15,140 15,140
Obligations of states and political subdivisions 1,165,924 1,157,920 8,004
Corporate securities 2,544,526 2,434,240 110,286
CLO and other ABS 1,339,801 1,277,372 62,429
RMBS 816,782 816,782
CMBS 663,839 663,839
Total AFS fixed income securities 6,677,070 59,264 6,437,087 180,719
Equity securities:
Common stock 1
322,074 225,911
Preferred stock 2,112 2,112
Total equity securities 324,186 228,023
Short-term investments 355,937 355,937
Total assets measured at fair value $ 7,357,193 643,224 6,437,087 180,719

12

December 31, 2020 Fair Value Measurements Using
($ in thousands) Assets
Measured at
Fair Value
Quoted Prices in
Active Markets for
Identical Assets/Liabilities
(Level 1)
Significant
Other Observable
Inputs
(Level 2)
Significant Unobservable
Inputs
(Level 3)
Description
Measured on a recurring basis:
AFS fixed income securities:
U.S. government and government agencies $ 116,140 40,960 75,180
Foreign government 18,366 18,366
Obligations of states and political subdivisions 1,247,137 1,244,243 2,894
Corporate securities 2,328,052 2,257,352 70,700
CLO and other ABS 1,026,551 970,176 56,375
RMBS 1,051,788 1,051,788
CMBS 667,894 667,894
Total AFS fixed income securities 6,455,928 40,960 6,284,999 129,969
Equity securities:
Common stock 1
308,632 261,846
Preferred stock 1,735 1,735
Total equity securities 310,367 263,581
Short-term investments 409,852 405,400 4,452
Total assets measured at fair value $ 7,176,147 709,941 6,289,451 129,969
1 Investments amounting to $ 96.2 million at September 30, 2021, and $ 46.8 million at December 31, 2020, were measured at fair value using net asset value per share (or its practical expedient) and are not classified in the fair value hierarchy. These investments are not redeemable and the timing of liquidations of the underlying assets is unknown at each reporting period. The fair value amounts in this table enables reconciliation of the fair value hierarchy to total assets measured at fair value .

The following table provides a summary of Level 3 changes in Nine Months 2021 and Nine Months 2020:
September 30, 2021
($ in thousands) Obligations of States and Political Subdivisions Corporate Securities CLO and Other ABS Total
Fair value, December 31, 2020 $ 2,894 70,700 56,375 129,969
Total net (losses) gains for the period included in:
OCI 9 2,607 206 2,822
Net realized and unrealized (losses) gains ( 185 ) ( 35 ) ( 220 )
Net investment income earned 14 9 23
Purchases 43,833 19,041 62,874
Sales
Issuances
Settlements ( 210 ) ( 1,750 ) ( 1,960 )
Transfers into Level 3 5,101 981 3,226 9,308
Transfers out of Level 3 ( 7,454 ) ( 14,643 ) ( 22,097 )
Fair value, September 30, 2021 $ 8,004 110,286 62,429 180,719
Change in unrealized losses for the period included in earnings for assets held at period end ( 185 ) ( 35 ) ( 220 )
Change in unrealized gains for the period included in OCI for assets held at period end 9 2,607 206 2,822

13

September 30, 2020
($ in thousands) Obligation of state and Political Subdivisions Corporate Securities CLO and Other ABS Total
Fair value, December 31, 2019 $ 17,051 17,034 34,085
Total net (losses) gains for the period included in:
OCI ( 36 ) ( 2,415 ) 732 ( 1,719 )
Net realized and unrealized (losses) gains ( 456 ) ( 247 ) ( 703 )
Net investment income earned 3 3
Purchases 19,002 11,751 30,753
Sales
Issuances
Settlements ( 138 ) ( 1,030 ) ( 1,168 )
Transfers into Level 3 2,890 4,592 26,401 33,883
Transfers out of Level 3 ( 9,924 ) ( 9,924 )
Fair value, September 30, 2020 $ 2,854 37,636 44,720 85,210
Change in unrealized gains (losses) for the period included in earnings for assets held at period end ( 456 ) ( 247 ) ( 703 )
Change in unrealized gains (losses) for the period included in OCI for assets held at period end ( 36 ) ( 2,415 ) 732 ( 1,719 )

The following tables provide quantitative information regarding our financial assets and liabilities that were disclosed at fair value at September 30, 2021, and December 31, 2020:
September 30, 2021 Fair Value Measurements Using
($ in thousands) Assets/
Liabilities
Disclosed at
Fair Value
Quoted Prices in
Active Markets for
Identical Assets/
Liabilities
(Level 1)
Significant Other
Observable Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Financial Assets
HTM:
Obligations of states and political subdivisions $ 3,619 3,619
Corporate securities 22,418 22,418
Total HTM fixed income securities $ 26,037 26,037
CMLs $ 86,001 86,001
Financial Liabilities
Long-term debt:
7.25% Senior Notes $ 64,955 64,955
6.70% Senior Notes 127,279 127,279
5.375% Senior Notes 382,961 382,961
3.03% borrowings from FHLBI 65,109 65,109
Total long-term debt $ 640,304 640,304

14

December 31, 2020 Fair Value Measurements Using
($ in thousands) Assets/
Liabilities
Disclosed at
Fair Value
Quoted Prices in
Active Markets for
Identical Assets/
Liabilities
(Level 1)
Significant Other
Observable Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Financial Assets
HTM:
Obligations of states and political subdivisions $ 4,795 4,795
Corporate securities 13,206 13,206
Total HTM fixed income securities $ 18,001 18,001
CMLs $ 47,289 47,289
Financial Liabilities
Long-term debt:
7.25% Senior Notes $ 66,148 66,148
6.70% Senior Notes 127,886 127,886
5.375% Senior Notes 383,669 383,669
1.61% borrowings from FHLBNY 25,182 25,182
1.56% borrowings from FHLBNY 25,198 25,198
3.03% borrowings from FHLBI 67,513 67,513
Total long-term debt $ 695,596 695,596

NOTE 6. Allowance for Credit Losses on Premiums Receivable
The following table provides a roll forward of the allowance for credit losses on our premiums receivable balance for the periods indicated:
Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Balance at beginning of period $ 18,300 $ 21,000 $ 21,000 $ 6,400
Cumulative effect adjustment 1
1,058
Balance at beginning of period, as adjusted $ 18,300 $ 21,000 $ 21,000 $ 7,458
Current period provision for expected credit losses 180 802 1,721 16,369
Write-offs charged against the allowance for credit losses ( 2,154 ) ( 996 ) ( 6,554 ) ( 3,272 )
Recoveries 174 194 333 445
Allowance for credit losses, end of period $ 16,500 $ 21,000 $ 16,500 $ 21,000
1 Represents the impact of our adoption of ASU 2016-13, Financial Instruments - Credit Losses .

In Nine Months 2020, we recognized an additional allowance for credit losses of $ 13.5 million, net of write-offs and recoveries. We based this increase on an evaluation of the recoverability of our premiums receivable in light of (i) the billing accommodations we announced during the first quarter of 2020 and (ii) the impact of certain state regulations that provided for deferral of payments without cancellation for a period up to 90 days and increased earned but uncollected premiums. The billing accommodations included individualized payment flexibility and suspending the effect of policy cancellations, late payment notices, and late or reinstatement fees. The heightened credit risk experienced in 2020 led us to increase the allowance for credit losses to $ 21.0 million last year. During Nine Months 2021, we realized a portion of the anticipated write-offs, which reduced our allowance. The reduction was partially offset by the additional provision established on current-year premiums, which resulted in the end of period allowance of $ 16.5 million.

15

NOTE 7. Reinsurance
We evaluate and monitor the financial condition of our reinsurers under voluntary reinsurance arrangements to minimize our exposure to significant losses from reinsurer insolvencies. The following tables provide (i) a disaggregation of our reinsurance recoverable balance by financial strength rating and (ii) an aging analysis of our past due reinsurance recoverable balances as of September 30, 2021, and December 31, 2020:
September 30, 2021
($ in thousands) Current Past Due Total Reinsurance Recoverables
Financial strength rating of rated reinsurers
A++ $ 39,325 $ 13 $ 39,338
A+ 338,912 887 339,799
A 96,071 439 96,510
A- 3,166 271 3,437
B++
B+
Total rated reinsurers $ 477,474 $ 1,610 $ 479,084
Non-rated reinsurers
Federal and state pools $ 204,001 $ $ 204,001
Other than federal and state pools 4,698 29 4,727
Total non-rated reinsurers $ 208,699 $ 29 $ 208,728
Total reinsurance recoverable, gross $ 686,173 $ 1,639 $ 687,812
Less: allowance for credit losses 1
( 1,595 )
Total reinsurance recoverable, net $ 686,217

December 31, 2020
($ in thousands) Current Past Due Total Reinsurance Recoverables
Financial strength rating of rated reinsurers
A++ $ 37,464 $ 102 $ 37,566
A+ 354,846 2,452 357,298
A 105,652 415 106,067
A- 2,139 2,139
B++ 56 324 380
B+
Total rated reinsurers $ 500,157 $ 3,293 $ 503,450
Non-rated reinsurers
Federal and state pools $ 82,575 $ $ 82,575
Other than federal and state pools 2,676 568 3,244
Total non-rated reinsurers $ 85,251 $ 568 $ 85,819
Total reinsurance recoverable, gross $ 585,408 $ 3,861 $ 589,269
Less: allowance for credit losses 1
( 1,777 )
Total reinsurance recoverable, net $ 587,492
1 Represents our current expectation of credit losses on total current and past due reinsurance recoverables, and is not identifiable by reinsurer.

The $ 98.7 million increase in "Total reinsurance recoverable, net," was primarily driven by losses ceded to the NFIP due to seasonal catastrophic storms, mainly Hurricane Ida, and subsequent flooding. See below for further discussion on ceded premiums written, ceded premiums earned, and ceded loss and loss expenses incurred related to our participation in the NFIP.

For a discussion of the methodology used to evaluate our estimate of expected credit losses, refer to Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2020 Annual Report.


16

The following table provides a rollforward of the allowance for credit losses on our reinsurance recoverable balance for the periods indicated:
($ in thousands) Quarter ended September 30, Nine Months ended September 30,
2021 2020 2021 2020
Balance at beginning of period $ 1,777 2,396 $ 1,777 4,400
Cumulative effect adjustment 1
( 2,903 )
Balance at beginning of period, as adjusted $ 1,777 2,396 $ 1,777 1,497
Current period provision for expected credit losses ( 182 ) ( 565 ) ( 182 ) 334
Write-offs charged against the allowance for credit losses
Recoveries
Allowance for credit losses, end of period $ 1,595 1,831 $ 1,595 1,831
1 Represents the impact of our adoption of ASU 2016-13, Financial Instruments - Credit Losses .

The following table contains a listing of direct, assumed, and ceded reinsurance amounts for premiums written, premiums earned, and loss and loss expenses incurred for the periods indicated. For more information about reinsurance, refer to Note 9. “Reinsurance” in Item 8. “Financial Statements and Supplementary Data.” of our 2020 Annual Report.
Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Premiums written:
Direct $ 932,752 839,275 $ 2,796,296 2,420,350
Assumed 7,136 5,450 17,541 17,902
Ceded ( 126,982 ) ( 125,217 ) ( 369,548 ) ( 346,665 )
Net $ 812,906 719,508 $ 2,444,289 2,091,587
Premiums earned:
Direct $ 877,620 803,957 $ 2,568,445 2,292,495
Assumed 6,304 6,147 16,391 18,375
Ceded ( 116,677 ) ( 115,563 ) ( 352,111 ) ( 333,955 )
Net $ 767,247 694,541 $ 2,232,725 1,976,915
Loss and loss expenses incurred:
Direct $ 655,483 530,192 $ 1,557,063 1,407,000
Assumed 4,143 4,232 10,807 13,430
Ceded ( 154,357 ) ( 86,622 ) ( 227,577 ) ( 168,355 )
Net $ 505,269 447,802 $ 1,340,293 1,252,075

Direct premiums written ("DPW") increased $ 375.9 million, or 16 %, in Nine Months 2021 compared to Nine Months 2020 from (i) overall renewal pure price increases, (ii) strong retention, and (iii) new business growth. This increase included four percentage points from the $ 75 million return audit and endorsement premium accrual that was recorded in the first quarter of 2020 and a $ 19.7 million premium credit to automobile policyholders in the second quarter of 2020.

The return audit and endorsement premium accrual recorded in 2020 reflected lower exposure levels, which determine the premium we charge, attributable to the economic impacts of the COVID-19 pandemic and the anticipated decline in sales and payroll exposures on the general liability and workers compensation lines of business in 2020.

Ceded premiums written, ceded premiums earned, and ceded loss and loss expenses incurred related to our participation in the NFIP, to which we cede 100 % of our NFIP flood premiums, losses, and loss expenses, were as follows:
Ceded to NFIP Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Ceded premiums written $ ( 77,697 ) ( 77,318 ) $ ( 218,520 ) ( 213,592 )
Ceded premiums earned ( 69,197 ) ( 68,427 ) ( 203,549 ) ( 202,656 )
Ceded loss and loss expenses incurred ( 153,713 ) ( 48,132 ) ( 174,861 ) ( 66,219 )

The i ncrease in ceded loss and loss expenses incurred related to our participation in the NFIP in Third Quarter and Nine Months 2021 compared to Third Quarter and Nine Months 2020 was due to the seasonal catastrophic storms mentioned above.

17

NOTE 8. Reserve for Loss and Loss Expense
The table below provides a roll forward of reserve for loss and loss expense balances:
Nine Months ended September 30,
($ in thousands) 2021 2020
Gross reserve for loss and loss expense, at beginning of year $ 4,260,355 4,067,163
Less: reinsurance recoverable on unpaid loss and loss expense, at beginning of year 1
554,269 547,066
Net reserve for loss and loss expense, at beginning of year 3,706,086 3,520,097
Incurred loss and loss expense for claims occurring in the:
Current year 1,408,240 1,295,285
Prior years ( 67,947 ) ( 43,210 )
Total incurred loss and loss expense 1,340,293 1,252,075
Paid loss and loss expense for claims occurring in the:
Current year 430,288 421,981
Prior years 675,782 646,974
Total paid loss and loss expense 1,106,070 1,068,955
Net reserve for loss and loss expense, at end of period 3,940,309 3,703,217
Add: Reinsurance recoverable on unpaid loss and loss expense, at end of period 670,031 590,059
Gross reserve for loss and loss expense at end of period $ 4,610,340 4,293,276
1 Nine Months 2020 includes an adjustment of $ 2.9 million related to our adoption of ASU 2016-13, Financial Instruments - Credit Losses .

Prior year reserve development in Nine Months 2021 was favorable by $ 67.9 million, which included $ 66.0 million of casualty reserve development. The favorable casualty reserve development included $ 29.0 million in our general liability line of business, $ 28.0 million in our workers compensation line of business, $ 7.0 million in our Excess and Surplus ("E&S") casualty lines of business, and $2.0 million in our businessowners' policies line of business.

Prior year reserve development in Nine Months 2020 was favorable by $ 43.2 million, which included $ 50.0 million of casualty reserve development, partially offset by $ 6.8 million of unfavorable property reserve development. The favorable casualty reserve development included $ 40.0 million in our workers compensation line of business and $ 20 million in our general liability line of business, partially offset by $ 10.0 million of unfavorable reserve development in our commercial automobile line of business.

NOTE 9. Segment Information
We evaluate the results of our four reportable segments as follows:

Our Standard Commercial Lines, Standard Personal Lines, and E&S Lines are evaluated on before and after-tax underwriting results (net premiums earned, incurred loss and loss expense, policyholder dividends, policy acquisition costs, and other underwriting expenses), return on equity ("ROE") contribution, and combined ratios.
Our Investments segment is primarily evaluated on after-tax net investment income and its ROE contribution. After-tax net realized and unrealized gains and losses, which are not included in non-GAAP operating income, are also included in our Investments segment results.

In computing each segment's results, we do not make adjustments for interest expense or corporate expenses, nor do we allocate assets.

18

The following summaries present revenues (net investment income and net realized and unrealized gains and losses on investments for the Investments segment) and pre-tax income for the individual segments:
Revenue by Segment Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Standard Commercial Lines:
Net premiums earned:
Commercial property $ 111,981 97,997 $ 320,904 287,279
Workers compensation 78,318 75,595 230,845 204,207
General liability 205,904 181,459 596,717 509,312
Commercial automobile 185,610 160,937 535,519 449,162
Businessowners' policies 23,025 27,605 80,963 82,157
Bonds 8,850 9,226 26,436 28,075
Other 5,883 5,266 17,082 15,477
Miscellaneous income 4,168 5,521 13,670 11,107
Total Standard Commercial Lines revenue 623,739 563,606 1,822,136 1,586,776
Standard Personal Lines:
Net premiums earned:
Personal automobile 40,575 42,458 122,977 123,134
Homeowners 30,633 31,395 91,801 94,537
Other 2,154 2,123 5,698 6,066
Miscellaneous income 420 598 1,242 1,520
Total Standard Personal Lines revenue 73,782 76,574 221,718 225,257
E&S Lines:
Net premiums earned:
Casualty lines 52,983 43,650 144,458 130,444
Property lines 21,331 16,830 59,325 47,065
Total E&S Lines revenue 74,314 60,480 203,783 177,509
Investments:
Net investment income 93,032 68,185 246,479 158,596
Net realized and unrealized investment gains (losses) 177 7,721 15,353 ( 24,296 )
Total Investments revenue 93,209 75,906 261,832 134,300
Total revenues $ 865,044 776,566 $ 2,509,469 2,123,842

Income Before and After Federal Income Tax Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Standard Commercial Lines:
Underwriting gain, before federal income tax $ 17,413 42,718 $ 154,850 76,574
Underwriting gain, after federal income tax 13,756 33,746 122,332 60,493
Combined ratio 97.2 % 92.3 91.4 95.1
ROE contribution 2.1 5.7 6.2 3.5
Standard Personal Lines:
Underwriting gain (loss), before federal income tax $ ( 11,146 ) ( 14,404 ) $ 2,193 ( 20,342 )
Underwriting gain (loss), after federal income tax ( 8,805 ) ( 11,379 ) 1,732 ( 16,070 )
Combined ratio 115.2 % 119.0 99.0 109.1
ROE contribution ( 1.3 ) ( 1.9 ) 0.1 ( 0.9 )
E&S Lines:
Underwriting gain (loss), before federal income tax $ 4,672 ( 7,277 ) $ 7,494 ( 3,965 )
Underwriting gain (loss), after federal income tax 3,691 ( 5,748 ) 5,920 ( 3,132 )
Combined ratio 93.7 % 112.0 96.3 102.2
ROE contribution 0.5 ( 1.0 ) 0.3 ( 0.2 )
Investments:
Net investment income $ 93,032 68,185 $ 246,479 158,596
Net realized and unrealized investment gains (losses) 177 7,721 15,353 ( 24,296 )
Total investments segment income, before federal income tax 93,209 75,906 261,832 134,300
Tax on investments segment income 18,379 14,676 51,229 24,338
Total investments segment income, after federal income tax $ 74,830 61,230 $ 210,603 109,962
ROE contribution of after-tax net investment income 11.0 9.4 10.1 7.5

19

Reconciliation of Segment Results to Income Before Federal Income Tax Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Underwriting gain
Standard Commercial Lines $ 17,413 42,718 $ 154,850 76,574
Standard Personal Lines ( 11,146 ) ( 14,404 ) 2,193 ( 20,342 )
E&S Lines 4,672 ( 7,277 ) 7,494 ( 3,965 )
Investment income 93,209 75,906 261,832 134,300
Total all segments 104,148 96,943 426,369 186,567
Interest expense ( 7,242 ) ( 7,781 ) ( 21,967 ) ( 23,310 )
Corporate expenses ( 4,270 ) ( 3,905 ) ( 22,936 ) ( 19,310 )
Income, before federal income tax $ 92,636 85,257 $ 381,466 143,947
Preferred stock dividends ( 2,300 ) ( 7,053 )
Income available to common stockholders, before federal income tax $ 90,336 85,257 $ 374,413 143,947

NOTE 10. Retirement Plans
The primary pension plan for our employees is the Retirement Income Plan for Selective Insurance Company of America (the “Pension Plan”). Selective Insurance Company of America (“SICA”) also sponsors the Supplemental Excess Retirement Plan (the “Excess Plan”) and a life insurance benefit plan. All plans are closed to new entrants, and benefits ceased accruing under the Pension Plan and the Excess Plan after March 31, 2016. For more information about SICA's retirement plans, see Note 15. “Retirement Plans” in Item 8. “Financial Statements and Supplementary Data.” of our 2020 Annual Report.

The following tables provide information about the Pension Plan:
Pension Plan Pension Plan
Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Net Periodic Pension Cost (Benefit):
Interest cost $ 2,148 2,828 $ 6,445 8,484
Expected return on plan assets ( 5,744 ) ( 5,477 ) ( 17,232 ) ( 16,430 )
Amortization of unrecognized net actuarial loss 626 704 1,876 2,112
Total net periodic pension benefit 1
$ ( 2,970 ) ( 1,945 ) $ ( 8,911 ) ( 5,834 )
1 The components of net periodic pension cost (benefit) are included within "Loss and loss expense incurred" and "Other insurance expenses" on the Consolidated Statements of Income.

Pension Plan
Nine Months ended September 30,
2021 2020
Weighted-Average Expense Assumptions:
Discount rate 2.68 % 3.33 %
Effective interest rate for calculation of interest cost 2.06 2.95
Expected return on plan assets 5.40 5.80
20


NOTE 11. Comprehensive Income
The following are the components of comprehensive income, both gross and net of tax, for Third Quarter and Nine Months 2021 and 2020:
Third Quarter 2021
($ in thousands) Gross Tax Net
Net income $ 92,636 18,931 73,705
Components of OCI:
Unrealized losses on investment securities :
Unrealized holding losses during the period ( 35,285 ) ( 7,410 ) ( 27,875 )
Unrealized losses on securities with credit loss recognized in earnings ( 2,343 ) ( 492 ) ( 1,851 )
Amounts reclassified into net income:
HTM securities 1 1
Net realized gains on disposals and losses on intent-to-sell AFS securities ( 1,296 ) ( 272 ) ( 1,024 )
Credit loss expense 1,334 280 1,054
Total unrealized losses on investment securities ( 37,589 ) ( 7,894 ) ( 29,695 )
Defined benefit pension and post-retirement plans:
Amounts reclassified into net income:
Net actuarial loss 693 145 548
Total defined benefit pension and post-retirement plans 693 145 548
Other comprehensive loss ( 36,896 ) ( 7,749 ) ( 29,147 )
Comprehensive income $ 55,740 11,182 44,558
Third Quarter 2020
($ in thousands) Gross Tax Net
Net income $ 85,257 15,382 69,875
Components of OCI:
Unrealized gains on investment securities :
Unrealized holding gains during the period 37,836 7,947 29,889
Unrealized gains on securities with credit loss recognized in earnings 9,239 1,940 7,299
Amounts reclassified into net income:
HTM securities ( 1 ) ( 1 )
Net realized gains on disposals and losses on intent-to-sell AFS securities ( 515 ) ( 109 ) ( 406 )
Credit loss benefit ( 2,853 ) ( 599 ) ( 2,254 )
Total unrealized gains on investment securities 43,706 9,178 34,528
Defined benefit pension and post-retirement plans:
Amounts reclassified into net income:
Net actuarial loss 754 158 596
Total defined benefit pension and post-retirement plans 754 158 596
Other comprehensive income 44,460 9,336 35,124
Comprehensive income $ 129,717 24,718 104,999

21

Nine Months 2021
($ in thousands) Gross Tax Net
Net income $ 381,466 76,608 304,858
Components of OCI:
Unrealized losses on investment securities :
Unrealized holding losses during the period ( 103,040 ) ( 21,638 ) ( 81,402 )
Unrealized losses on securities with credit loss recognized in earnings ( 3,678 ) ( 772 ) ( 2,906 )
Amounts reclassified into net income:
HTM securities ( 4 ) ( 1 ) ( 3 )
Net realized gains on disposals and losses on intent-to-sell AFS securities ( 634 ) ( 133 ) ( 501 )
Credit loss expense 4,059 852 3,207
Total unrealized losses on investment securities ( 103,297 ) ( 21,692 ) ( 81,605 )
Defined benefit pension and post-retirement plans:
Amounts reclassified into net income:
Net actuarial loss 2,079 436 1,643
Total defined benefit pension and post-retirement plans 2,079 436 1,643
Other comprehensive loss ( 101,218 ) ( 21,256 ) ( 79,962 )
Comprehensive income $ 280,248 55,352 224,896
Nine Months 2020
($ in thousands) Gross Tax Net
Net income $ 143,947 24,653 119,294
Components of OCI:
Unrealized gains on investment securities :
Unrealized holding gains during the period 132,623 27,852 104,771
Unrealized losses on securities with credit loss recognized in earnings ( 18,672 ) ( 3,921 ) ( 14,751 )
Amounts reclassified into net income:
HTM securities ( 7 ) ( 2 ) ( 5 )
Net realized losses on disposals and losses on intent-to-sell AFS securities 9,126 1,916 7,210
Credit loss expense 8,010 1,682 6,328
Total unrealized gains on investment securities 131,080 27,527 103,553
Defined benefit pension and post-retirement plans:
Amounts reclassified into net income:
Net actuarial loss 2,261 474 1,787
Total defined benefit pension and post-retirement plans 2,261 474 1,787
Other comprehensive income 133,341 28,001 105,340
Comprehensive income $ 277,288 52,654 224,634

The following are the balances and changes in each component of AOCI (net of taxes) as of September 30, 2021:
September 30, 2021 Defined Benefit
Pension and Post-Retirement Plans
Net Unrealized (Losses) Gains on Investment Securities Total AOCI
($ in thousands)
Credit Loss Related 1
HTM
Related
All
Other
Investments
Subtotal
Balance, December 31, 2020 $ ( 2,546 ) 6 307,790 305,250 ( 85,064 ) 220,186
OCI before reclassifications ( 2,906 ) ( 81,402 ) ( 84,308 ) ( 84,308 )
Amounts reclassified from AOCI 3,207 ( 3 ) ( 501 ) 2,703 1,643 4,346
Net current period OCI 301 ( 3 ) ( 81,903 ) ( 81,605 ) 1,643 ( 79,962 )
Balance, September 30, 2021 $ ( 2,245 ) 3 225,887 223,645 ( 83,421 ) 140,224
1 Represents change in unrealized loss on securities with credit loss recognized in earnings.




22

The reclassifications out of AOCI were as follows:
Quarter ended September 30, Nine Months ended September 30, Affected Line Item in the Unaudited Consolidated Statements of Income
($ in thousands) 2021 2020 2021 2020
HTM related
Unrealized (gains) losses on HTM disposals $ ( 1 ) 4 $ ( 1 ) 5 Net realized and unrealized investment gains (losses)
Amortization of net unrealized losses (gains) on HTM securities 2 ( 5 ) ( 3 ) ( 12 ) Net investment income earned
1 ( 1 ) ( 4 ) ( 7 ) Income before federal income tax
1 1 2 Total federal income tax expense
1 ( 3 ) ( 5 ) Net income
Net realized (gains) losses on disposals and intent-to-sell AFS securities
Net realized (gains) losses on disposals and intent-to-sell AFS securities ( 1,296 ) ( 515 ) ( 634 ) 9,126 Net realized and unrealized investment gains (losses)
( 1,296 ) ( 515 ) ( 634 ) 9,126 Income before federal income tax
272 109 133 ( 1,916 ) Total federal income tax expense
( 1,024 ) ( 406 ) ( 501 ) 7,210 Net income
Credit loss related
Credit loss expense (benefit) 1,334 ( 2,853 ) 4,059 8,010 Net realized and unrealized investment gains (losses)
1,334 ( 2,853 ) 4,059 8,010 Income before federal income tax
( 280 ) 599 ( 852 ) ( 1,682 ) Total federal income tax expense
1,054 ( 2,254 ) 3,207 6,328 Net income
Defined benefit pension and post-retirement life plans
Net actuarial loss 159 162 478 486 Loss and loss expense incurred
534 592 1,601 1,775 Other insurance expenses
Total defined benefit pension and post-retirement life 693 754 2,079 2,261 Income before federal income tax
( 145 ) ( 158 ) ( 436 ) ( 474 ) Total federal income tax expense
548 596 1,643 1,787 Net income
Total reclassifications for the period $ 579 ( 2,064 ) $ 4,346 15,320 Net income

NOTE 12. Equity
On December 2, 2020, we announced that our Board of Directors authorized a $ 100 million share repurchase program, which has no set expiration or termination date. Our repurchase program does not obligate us to acquire any particular amount of our common stock, and the repurchase program may be suspended or discontinued at any time at our discretion. The timing and amount of any share repurchases under the authorization will be determined by management at its discretion based on market conditions and other considerations. As of September 30, 2021, 52,781 shares were repurchased under the share repurchase program at a total cost of $ 3.4 million. These repurchases were all completed in the first quarter of 2021, and we did not repurchase any shares under our share repurchase program in the second or third quarters of 2021. We have $ 96.6 million of remaining capacity under our share repurchase program.

NOTE 13. Litigation
As of September 30, 2021, we do not believe we are involved in any legal action that could have a material adverse effect on our consolidated financial condition, results of operations, or cash flows.

In the ordinary course of conducting business, we are parties in various legal actions. Most are claims litigation involving our Insurance Subsidiaries as (i) liability insurers defending or providing indemnity for third-party claims brought against our customers, (ii) insurers defending first-party coverage claims brought against them, or (iii) liability insurers seeking declaratory judgment on our insurance coverage obligations. We account for such activity through the establishment of unpaid loss and loss expense reserves. In ordinary course claims litigation, we expect that any potential ultimate liability, after consideration of provisions made for potential losses and costs of defense, will not be material to our consolidated financial condition, results of operations, or cash flows.

All of our commercial property and businessowners' policies require direct physical loss of or damage to property by a covered cause of loss. It also is our practice to include in, or attach to, all standard lines commercial property and businessowners' policies an exclusion that states that all loss or property damage caused by or resulting from any virus, bacterium, or other microorganism that induces or is capable of inducing physical distress, illness, or disease is not a covered cause of loss ("Virus Exclusion"). Whether COVID-19-related contamination, the existence of the COVID-19 pandemic, and the resulting
23

COVID-19-related government shutdown orders cause physical loss of or damage to property is the subject of much public debate and first-party coverage litigation against some insurers, including us. The Virus Exclusion also is the subject of first-party coverage litigation against some insurers, including us. We cannot predict the outcome of litigation over these two coverage issues, including interpretation of provisions similar or identical to those in our insurance policies.

From time to time, our Insurance Subsidiaries also are named as defendants in other legal actions, some of which assert claims for substantial amounts. Plaintiffs may style these actions as putative class actions and seek judicial certification of a state or national class for allegations involving our business practices, such as improper reimbursement of medical providers paid under workers compensation and personal and commercial automobile insurance policies or improper reimbursement for automobile parts. Similarly, our Insurance Subsidiaries can be named in individual actions seeking extra-contractual damages, punitive damages, or penalties, often alleging bad faith in the handling of insurance claims. We believe that we have valid defenses to these allegations and we account for such activity through the establishment of unpaid loss and loss expense reserves. In these other legal actions, we expect that any potential ultimate liability, after consideration of provisions made for estimated losses, will not be material to our consolidated financial condition. Nonetheless, litigation outcomes are inherently unpredictable and, because the amounts sought in certain of these actions are large or indeterminate, it is possible that any adverse outcomes could have a material adverse effect on our consolidated results of operations or cash flows in particular quarterly or annual periods.

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

Forward-Looking Statements
The terms "Company," "we," "us," and "our" refer to Selective Insurance Group, Inc. (the "Parent"), and its subsidiaries, except as expressly indicated or the context otherwise requires. In this Quarterly Report on Form 10-Q, we discuss and make statements about our intentions, beliefs, current expectations, and projections for our future operations and performance. Such statements are “forward-looking statements” under the Private Securities Litigation Reform Act of 1995. These forward-looking statements often are identified by words such as “anticipates,” “believes,” “expects,” “will,” “should,” and “intends” and their negatives. We caution prospective investors that forward-looking statements are not guarantees of future performance. Risks and uncertainties are inherent in our future performance. Factors that could cause actual results to differ materially from those indicated in forward-looking statements include, without limitation, those discussed in Item 1A. “Risk Factors.” in Part II. “Other Information” of this Form 10-Q. Our stated risk factors may not be exhaustive. We operate in a continually changing business environment, and new risk factors emerge from time to time. We can neither predict such new risk factors nor can we assess the impact, if any, such new risk factors may have on our businesses or the extent to which any factor or combination of factors may cause actual results to differ materially from those expressed or implied in any forward-looking statement. In light of these risks, uncertainties, and assumptions, the forward-looking events discussed in this report might not occur. We make forward-looking statements based on currently available information and assume no obligation, other than as may be required under the federal securities laws, to publicly update or revise any forward-looking statements for any reason.

Introduction
We classify our business into four reportable segments:

Standard Commercial Lines;
Standard Personal Lines;
Excess and surplus ("E&S Lines"); and
Investments.

For more details about these segments, refer to Note 9. "Segment Information" in Item 1. "Financial Statements." of this Form 10-Q and Note 12. "Segment Information" in Item 8. "Financial Statements and Supplementary Data." of our Annual Report on Form 10-K for the year ended December 31, 2020 ("2020 Annual Report").

We write our Standard Commercial and Standard Personal Lines products and services through nine of our insurance subsidiaries, some of which participate in the federal government's National Flood Insurance Program's ("NFIP") Write Your Own Program ("WYO"). We write our E&S products through another subsidiary, Mesa Underwriters Specialty Insurance Company, which provides us with a nationally-authorized non-admitted platform for customers who generally cannot obtain coverage in the standard marketplace. Collectively, we refer to our ten insurance subsidiaries as the "Insurance Subsidiaries."
The following is Management’s Discussion and Analysis (“MD&A”) of the consolidated results of operations and financial condition, as well as known trends and uncertainties, that may have a material impact in future periods. Investors should read the MD&A in conjunction with Item 1. "Financial Statements." of this Form 10-Q and the consolidated financial statements in our 2020 Annual Report filed with the U.S. Securities and Exchange Commission.
24

In the MD&A, we will discuss and analyze the following:

Critical Accounting Policies and Estimates;
Financial Highlights of Results for the third quarters ended September 30, 2021 (“Third Quarter 2021”) and September 30, 2020 (“Third Quarter 2020”) and the nine-month periods ended September 30, 2021 (“Nine Months 2021”) and September 30, 2020 (“Nine Months 2020”);
Results of Operations and Related Information by Segment;
Federal Income Taxes;
Financial Condition, Liquidity, and Capital Resources;
Ratings;
Off-Balance Sheet Arrangements; and
Contractual Obligations, Contingent Liabilities, and Commitments.

Critical Accounting Policies and Estimates
Our unaudited interim consolidated financial statements include amounts for which we have made informed estimates and judgments for transactions not yet completed. Such estimates and judgments affect the reported amounts in the consolidated financial statements. As outlined in our 2020 Annual Report, those estimates and judgments most critical to the preparation of the consolidated financial statements involved the following: (i) reserves for loss and loss expense; (ii) investment valuation and the allowance for credit losses on available-for-sale ("AFS") fixed income securities; (iii) reinsurance; (iv) allowance for credit losses on premiums receivable, and (v) the accrual for auditable premium. These estimates and judgments require the use of assumptions about matters that are highly uncertain, and therefore are subject to change as facts and circumstances develop. If different estimates and judgments had been applied, materially different amounts might have been reported in the financial statements.

We have made no material changes in the critical accounting policies disclosed on pages 37 through 46 of our 2020 Annual Report.

The following estimates materially changed in Nine Months 2021:
Investment valuation and the allowance for credit losses on AFS fixed income securities - See Note 4. "Investments" and Note 5. "Fair Value Measurements" in Item 1. "Financial Statements." of this Form 10-Q;
Reserves for loss and loss expense - See Note 8. "Reserve for Loss and Loss Expense" in Item 1. "Financial Statements." of this Form 10-Q;
Reinsurance - See Note 7. "Reinsurance" in Item 1. "Financial Statements." of this Form 10-Q;
Allowance for credit losses on premiums receivable - See Note 6. "Allowance for Credit Losses on Premiums Receivable" in Item 1. "Financial Statements." of this Form 10-Q; and
Accrual for auditable premium - In the first quarter of 2020, we recorded a $75 million return audit and mid-term endorsement premium accrual in response to the COVID-19 pandemic and the anticipated decline in payroll and sales exposures on the workers compensation and general liability lines of business. The remaining accrual was $24.8 million as of December 31, 2020. During 2021, we applied premium adjustments for audits, fully exhausting this accrual as of June 30, 2021. Since April 2020, through active engagement among our underwriters, insureds, and distribution partners, we have established exposure levels to reflect our best estimate of how the current environment may impact our policies. As a result, we did not have material accruals for additional or return premium as of September 30, 2021.



25

Financial Highlights of Results for Third Quarter and Nine Months 2021 and Third Quarter and Nine Months 2020 1
($ and shares in thousands, except per share amounts) Quarter ended September 30, Change
% or Points
Nine Months ended September 30, Change
% or Points
2021 2020 2021 2020
Financial Data:
Revenues $ 865,044 776,566 11 % $ 2,509,469 2,123,842 18 %
After-tax net investment income 74,690 55,131 35 198,474 129,156 54
After-tax underwriting income 8,642 16,619 (48) 129,984 41,291 215
Net income before federal income tax 92,636 85,257 9 381,466 143,947 165
Net income 73,705 69,875 5 304,858 119,294 156
Net income available to common stockholders 71,405 69,875 2 297,805 119,294 150
Key Metrics:
Combined ratio 98.6 % 97.0 1.6 pts 92.6 % 97.4 (4.8) pts
Invested assets per dollar of common stockholders' equity $ 2.89 3.04 (5) % $ 2.89 3.04 (5) %
Annualized return on common equity ("ROE") 10.6 11.9 (1.3) pts 15.1 6.9 8.2 pts
Statutory premiums to surplus ratio 1.35 x 1.39 (0.04) 1.35 x 1.39 (0.04)
Per Common Share Amounts:
Diluted net income per share $ 1.18 1.16 2 % $ 4.92 1.98 148 %
Book value per share 45.27 40.00 13 45.27 40.00 13
Dividends declared per share to common stockholders 0.25 0.23 9 0.75 0.69 9
Non-GAAP Information:
Non-GAAP operating income 2
$ 71,265 63,776 12 % $ 285,676 138,488 106 %
Diluted non-GAAP operating income per common share 2
1.18 1.06 11 4.72 2.30 105
Annualized non-GAAP operating ROE 2
10.6 % 10.9 (0.3) pts 14.5 % 8.0 6.5 pts
1 Refer to the Glossary of Terms attached to our 2020 Annual Report as Exhibit 99.1 for definitions of terms used of this Form 10-Q.
2 Non-GAAP operating income, non-GAAP operating income per diluted common share, and annualized non-GAAP operating ROE are measures comparable to net income available to common stockholders, net income available to common stockholders per diluted common share, and annualized ROE, respectively, but exclude after-tax net realized and unrealized gains and losses on investments. They are used as important financial measures by us, analysts, and investors because the timing of realized investment gains and losses on sales of securities in any given period is largely discretionary. In addition, net realized and unrealized investment gains and losses on investments that are charged to earnings could distort the analysis of trends.

Reconciliations of net income available to common stockholders, net income available to common stockholders per diluted common share, and annualized ROE to non-GAAP operating income, non-GAAP operating income per diluted common share, and annualized non-GAAP operating ROE, respectively, are provided in the tables below:
Reconciliation of net income available to common stockholders to non-GAAP operating income Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Net income available to common stockholders $ 71,405 69,875 $ 297,805 119,294
Net realized and unrealized (gains) losses, before tax (177) (7,721) (15,353) 24,296
Tax on reconciling items 37 1,622 3,224 (5,102)
Non-GAAP operating income $ 71,265 63,776 $ 285,676 138,488

Reconciliation of net income available to common stockholders per diluted common share to non-GAAP operating income per diluted common share Quarter ended September 30, Nine Months ended September 30,
2021 2020 2021 2020
Net income available to common stockholders per diluted common share $ 1.18 1.16 $ 4.92 1.98
Net realized and unrealized (gains) losses, before tax (0.13) (0.25) 0.40
Tax on reconciling items 0.03 0.05 (0.08)
Non-GAAP operating income per diluted common share $ 1.18 1.06 $ 4.72 2.30

Reconciliation of annualized ROE to annualized non-GAAP operating ROE Quarter ended September 30, Nine Months ended September 30,
2021 2020 2021 2020
Annualized ROE 10.6 % 11.9 15.1 % 6.9
Net realized and unrealized (gains) losses, before tax (1.3) (0.8) 1.4
Tax on reconciling items 0.3 0.2 (0.3)
Annualized non-GAAP operating ROE 10.6 % 10.9 14.5 % 8.0

26

The components of our annualized ROE and non-GAAP operating ROE are as follows:
Annualized ROE and non-GAAP operating ROE Components Quarter ended September 30, Change Points Nine Months ended September 30, Change Points
2021 2020 2021 2020
Standard Commercial Lines Segment 2.1 % 5.7 (3.6) 6.2 % 3.5 2.7
Standard Personal Lines Segment (1.3) (1.9) 0.6 0.1 (0.9) 1.0
E&S Lines Segment 0.5 (1.0) 1.5 0.3 (0.2) 0.5
Total insurance operations 1.3 2.8 (1.5) 6.6 2.4 4.2
Investment income 11.0 9.4 1.6 10.1 7.5 2.6
Net realized and unrealized investment gains (losses) 1.0 (1.0) 0.6 (1.1) 1.7
Total investments segment 11.0 10.4 0.6 10.7 6.4 4.3
Other (1.7) (1.3) (0.4) (2.2) (1.9) (0.3)
Annualized ROE 10.6 % 11.9 (1.3) 15.1 % 6.9 8.2
Net realized and unrealized (gains) losses, after tax (1.0) 1.0 (0.6) 1.1 (1.7)
Annualized Non-GAAP Operating ROE 10.6 % 10.9 (0.3) 14.5 % 8.0 6.5

Our Nine Months 2021 annualized non-GAAP operating ROE of 14.5% was above our full-year 2021 target of 11% and our Nine Months 2020 annualized non-GAAP operating ROE of 8.0%, driven by strong investment and underwriting income. Non-GAAP operating income per diluted common share increased (i) $0.12 in Third Quarter 2021 compared to Third Quarter 2020, and (ii) $2.42 in Nine Months 2021 compared to Nine Months 2020.

The increase in non-GAAP operating income per diluted common share in Third Quarter and Nine Months 2021 compared to Third Quarter and Nine Months 2020 was primarily driven by:
Net catastrophe losses (lower by $0.14 in Third Quarter 2021 and $1.20 in Nine Months 2021) driven by industry-wide U.S. catastrophe loss activity in 2020 that significantly exceeded the 10-year historical median; and
Investment income (higher by $0.32 in Third Quarter 2021 and $1.14 in Nine Months 2021) driven by alternative investments in our other investments portfolio. These results principally reflect unrealized gains on our private equity holdings that benefited from the upward movement in private market valuations in the three and nine-month periods ending June 30, 2021, as our results on these holdings are recorded on a one-quarter lag.

Partially offsetting the increase in non-GAAP operating income per diluted common share in Third Quarter 2021 was the following:
Non-catastrophe property loss and loss expenses that increased by $0.09 in Third Quarter 2021 compared to Third Quarter 2020; and
Favorable prior year casualty reserve development that was less in Third Quarter 2021 by $0.18 compared to Third Quarter 2020.

Outlook
We entered 2021 in the strongest financial position in our Company's long history and were well positioned to continue generating disciplined and profitable growth. Through Nine Months 2021 we have generated 17% growth in NPW and a 14.5% annualized Non-GAAP Operating ROE. For the remainder of the year and looking ahead to 2022, we continue to focus on several areas to position us for ongoing success:

Delivering on our strategy for continued disciplined growth by (i) continuing to expand our Standard Commercial Lines market share by increasing our share of wallet with existing agents and strategically appointing new agents, (ii) investing in geographic expansion, with a plan to commence writing Standard Commercial Lines business in the states of Vermont, Alabama, and Idaho, subject to regulatory approval, in the near-term, and other states over time, (iii) increasing customer retention by delivering a superior omnichannel experience and offering value-added technologies and services, and (iv) shifting our focus towards the mass affluent market within our Standard Personal Lines segment, which is a customer base that derives greater value from coverage and service.
Continuing to achieve written renewal pure price increases that meet or exceed expected loss trend, while delivering on our strategy for continued disciplined growth. We achieved overall renewal pure price increases of 4.9% in Third Quarter 2021 and 5.1% in Nine Months 2021, which is at or above our expected loss trend.
Continuing to build on a culture centered on the values of diversity, equity, and inclusion that fosters innovation, idea generation, and development of a group of specially trained leaders who can guide us successfully into the future.

27

For more details about our major areas of strategic focus, refer to the "Outlook" section in "Financial Highlights of Results for Years Ended December 31, 2020, 2019, and 2018" within Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations." of our 2020 Annual Report.

For 2021, our current full-year guidance is as follows:

A GAAP combined ratio, excluding net catastrophe losses, of 88% (prior guidance 89%) that assumes no fourth quarter prior-year casualty reserve development;
Net catastrophe losses of 5.0 points (prior guidance 4.0 points) on the combined ratio;
After-tax net investment income of $240 million (prior guidance $220 million) that includes $75 million (prior guidance $55 million) in after-tax net investment income from our alternative investments;
An overall effective tax rate of approximately 20.5%, that includes an effective tax rate of 19.5% (prior guidance 19.0%) for net investment income and 21.0% for all other items; and
Weighted average shares of 60.5 million on a diluted basis.

Results of Operations and Related Information by Segment

Insurance Operations
The following table provides quantitative information for analyzing the combined ratio:
All Lines Quarter ended September 30, Change % or Points Nine Months ended September 30, Change % or Points
($ in thousands) 2021 2020 2021 2020
Insurance Operations Results:
Net premiums written ("NPW") $ 812,906 719,508 13 % $ 2,444,289 2,091,587 17 %
Net premiums earned (“NPE”) 767,247 694,541 10 2,232,725 1,976,915 13
Less:
Loss and loss expense incurred 505,269 447,802 13 1,340,293 1,252,075 7
Net underwriting expenses incurred 250,033 225,103 11 724,484 670,531 8
Dividends to policyholders 1,006 599 68 3,411 2,042 67
Underwriting income $ 10,939 21,037 (48) % $ 164,537 52,267 215 %
Combined Ratios:
Loss and loss expense ratio 65.9 % 64.5 1.4 pts 60.0 % 63.4 (3.4) pts
Underwriting expense ratio 32.6 32.4 0.2 32.4 33.9 (1.5)
Dividends to policyholders ratio 0.1 0.1 0.2 0.1 0.1
Combined ratio 98.6 97.0 1.6 92.6 97.4 (4.8)

The NPW growth in Third Quarter and Nine Months 2021 compared to the prior year periods reflects our strong relationships with best-in-class distribution partners, sophisticated underwriting and pricing tools, and excellent customer servicing capabilities. This solid growth included (i) overall renewal pure price increases, and (ii) new business growth, as shown in the following table:

Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in millions) 2021 2020 2021 2020
Direct new business $ 168.3 140.8 20 % $ 497.3 443.6 12 %
Renewal pure price increases 4.9 % 4.4 0.5 pts 5.1 % 4.1 1.0 pts

The NPW growth in Nine Months 2021 was further impacted by the 2020 COVID-19-related $75 million estimate of return audit and mid-term endorsement premium and $19.7 million of premium credits to our personal and commercial automobile customers, which reduced NPW by $94.7 million in Nine Months 2020. The $94.7 million reduction in NPW in Nine Months 2020 from COVID-19-related adjustments had the impact of increasing Nine Months 2021 NPW growth by 5 percentage points.

28

Loss and Loss Expenses
The loss and loss expense ratio increased 1.4 points in Third Quarter 2021 and decreased 3.4 points in Nine Months 2021 compared to Third Quarter and Nine Months 2020, respectively, primarily due to the following:
Third Quarter 2021 Third Quarter 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Loss and Loss Expense Ratio
Loss and Loss
Expense
Incurred
Impact on
Loss and Loss Expense Ratio
Change in Ratio
Net catastrophe losses $ 76.3 10.0 pts $ 79.5 11.4 pts (1.4) pts
(Favorable) prior year casualty reserve development (14.0) (1.8) (25.0) (3.6) 1.8
Non-catastrophe property loss and loss expenses 123.7 16.1 105.6 15.2 0.9
Total $ 186.0 24.3 $ 160.1 23.0 1.3
Nine Months 2021 Nine Months 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Loss and Loss Expense Ratio
Loss and Loss
Expense
Incurred
Impact on
Loss and Loss Expense Ratio
Change in Ratio
Net catastrophe losses $ 128.9 5.8 pts $ 195.9 9.9 pts (4.1) pts
(Favorable) prior year casualty reserve development (66.0) (3.0) (50.0) (2.5) (0.5)
Non-catastrophe property loss and loss expenses 346.6 15.5 295.5 14.9 0.6
Total $ 409.5 18.3 $ 441.4 22.3 (4.0)

Third Quarter 2021 and Third Quarter 2020 included elevated levels of net catastrophe losses with 10.0 points this year, including 5.6 percentage points from Hurricane Ida, and 11.4 points last year. Both years compare unfavorably to our longer-term net catastrophe loss averages. Catastrophe losses in Third Quarter 2021 include $54 million of gross losses from Hurricane Ida, and $43 million of net losses, after factoring in the retention benefit from our Property Catastrophe Excess of Loss Treaty, which attaches at $40 million. The structure of our Property Catastrophe Excess of Loss Treaty is detailed in the “Reinsurance” section of Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations" of our 2020 Annual Report. The majority of the loss was attributable to property losses, including personal and commercial automobiles, in New Jersey and the surrounding states. Losses in Third Quarter 2020 were driven by the derecho in the Midwestern states of our footprint, as well as Hurricane Isaias. Net catastrophe losses were lower in Nine Months 2021 compared to Nine Months 2020, as the first half of 2020 was also affected by a tornado and subsequent hail event that impacted Tennessee in March, two large storms in April, and claims related to civil unrest in June 2020.

Details of the prior year casualty reserve development were as follows:
(Favorable)/Unfavorable Prior Year Casualty Reserve Development Quarter ended September 30, Nine Months ended September 30,
($ in millions) 2021 2020 2021 2020
General liability $ (4.0) (10.0) $ ( 29.0 ) ( 20.0 )
Commercial automobile 10.0
Workers compensation (8.0) (15.0) ( 28.0 ) ( 40.0 )
Businessowners' policies (2.0) (2.0)
Total Standard Commercial Lines (14.0) (25.0) (59.0) (50.0)
E&S (7.0)
Total (favorable) prior year casualty reserve development $ (14.0) (25.0) $ (66.0) (50.0)
(Favorable) impact on loss ratio (1.8) pts (3.6) (3.0) (2.5)

For additional qualitative reserve development discussion, please refer to the insurance segment sections below in "Results of Operations and Related Information by Segment."

Underwriting Expenses
The underwriting expense ratio decreased 1.5 points in Nine Months 2021 compared to Nine Months 2020. The underwriting expense ratio in Nine Months 2020 was elevated by 1.5 points for COVID-19-related items. The decrease in the underwriting expense ratio in Nine Months 2021 reflects the absence of these COVID-19-related impacts.

The COVID-19-related items included in 2020 results were as follows: (i) lower NPE from the estimate of return audit and mid-term endorsement premium recorded in the first quarter of 2020 and premium credits given to our personal and commercial
29

automobile customer during the second quarter of 2020; and (ii) a $13.5 million increase to our allowance for credit losses on premiums receivable in Nine Months 2020.

Standard Commercial Lines Segment
Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in thousands) 2021 2020 2021 2020
Insurance Segments Results:
NPW $ 652,603 577,752 13 % $ 1,995,297 1,679,526 19 %
NPE 619,571 558,085 11 1,808,466 1,575,669 15
Less:
Loss and loss expense incurred 393,503 331,045 19 1,048,170 950,240 10
Net underwriting expenses incurred 207,649 183,723 13 602,035 546,813 10
Dividends to policyholders 1,006 599 68 3,411 2,042 67
Underwriting income $ 17,413 42,718 (59) % $ 154,850 76,574 102 %
Combined Ratios:
Loss and loss expense ratio 63.5 % 59.3 4.2 pts 57.9 % 60.3 (2.4) pts
Underwriting expense ratio 33.5 32.9 0.6 33.3 34.7 (1.4)
Dividends to policyholders ratio 0.2 0.1 0.1 0.2 0.1 0.1
Combined ratio 97.2 92.3 4.9 91.4 95.1 (3.7)

NPW growth was up 13% in Third Quarter 2021 and 19% in Nine Months 2021 compared to the same prior-year periods, reflecting (i) renewal pure price increases, (ii) stable retention, and (iii) direct new business increases, as shown in the following table:
Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in millions) 2021 2020 2021 2020
Direct new business $ 122.3 99.0 24 % $ 365.6 324.3 13 %
Retention 86 % 86 pts 85 % 85 pts
Renewal pure price increases 5.3 4.6 0.7 5.5 4.2 1.3

Consistent with our overall insurance operations, Nine Months 2021 NPW growth was positively impacted by approximately six points from the following 2020 COVID-19-related items which did not recur in Nine Months 2021:

A $75 million estimate of return audit and mid-term endorsement premium that reduced Nine Months 2020 NPW.
A $15.4 million premium credit to our commercial automobile customers that reduced Nine Months 2020 NPW.

The loss and loss expense ratio increased 4.2 points in Third Quarter 2021 and decreased 2.4 points in Nine Months 2021 compared to the same prior-year periods, principally driven by the following:
Third Quarter 2021 Third Quarter 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Loss and Loss Expense Ratio
Loss and Loss
Expense
Incurred
Impact on
Loss and Loss Expense Ratio
Change in Ratio
Net catastrophe losses $ 50.0 8.1 pts $ 39.3 7.0 pts 1.1 pts
Non-catastrophe property loss and loss expenses 90.1 14.5 75.3 13.5 1.0
(Favorable) prior year casualty reserve development (14.0) (2.3) (25.0) (4.5) 2.2
Total 126.1 20.3 89.6 16.0 4.3
Nine Months 2021 Nine Months 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Loss and Loss Expense Ratio
Loss and Loss
Expense
Incurred
Impact on
Loss and Loss Expense Ratio
Change in Ratio
Net catastrophe losses $ 77.3 4.3 pts $ 110.7 7.0 pts (2.7) pts
Non-catastrophe property loss and loss expenses 248.4 13.7 215.7 13.7
(Favorable) prior year casualty reserve development (59.0) (3.3) (50.0) (3.2) (0.1)
Total 266.7 14.7 276.4 17.5 (2.8)

Third Quarter 2021 and Third Quarter 2020 included elevated levels of net catastrophe losses with 8.1 points this year and 7.0 points last year. Both years compared unfavorably to our longer-term net catastrophe loss average for this segment. Net catastrophe losses for this segment are consistent with the discussion in the Insurance Operations section above.

30

The current year loss and loss expense ratio was 0.5 points higher in Nine Months 2021 compared to Nine Months 2020, primarily driven by increased claim frequencies. Last year experienced lower claims frequencies in the commercial auto line reflecting reductions in miles driven due to the COVID-19-related governmental directives. Lower claims frequencies and lower non-catastrophe property losses provided an offset to the $15.4 million premium credit to customers in 2020.

For quantitative information on the favorable prior year casualty reserve development by line of business, see the "Insurance Operations" section above, and for qualitative information about the significant drivers of this development, see the line of business discussions below.

The underwriting expense ratio decreased 1.4 points in Nine Months 2021 compared to Nine Months 2020. The underwriting expense ratio in Nine Months 2020 was elevated by 1.6 points for COVID-19-related items, as discussed in "Insurance Operations" above. The decrease in the underwriting expense ratio in Nine Months 2021 reflects the absence of these COVID-19-related impacts.

The following is a discussion of our most significant Standard Commercial Lines of business:
General Liability
Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in thousands) 2021 2020 2021 2020
NPW $ 216,897 186,929 16 % $ 664,462 538,640 23 %
Direct new business 38,376 28,010 37 109,803 95,364 15
Retention 86 % 86 pts 85 % 86 (1) pts
Renewal pure price increases 4.4 4.1 0.3 4.5 3.9 0.6
NPE $ 205,904 181,459 13 % $ 596,717 509,312 17 %
Underwriting income 29,993 32,182 (7) 97,611 70,364 39
Combined ratio 85.4 % 82.3 3.1 pts 83.6 % 86.2 % (2.6) pts
% of total Standard Commercial Lines NPW 33 32 33 32

NPW grew 16% in Third Quarter 2021 and 23% in Nine Months 2021 compared to the same prior-year periods due to renewal pure price increases, strong retention, and direct new business growth. NPW growth in Nine Months 2021 also included a 10-point benefit from the 2020 COVID-19-related $46 million estimate of return audit and mid-term endorsement premium recorded on this line in the first quarter of 2020, which did not recur in Nine Months 2021.

The fluctuations in the combined ratios illustrated in the table above included the following:
Third Quarter 2021 Third Quarter 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Combined Ratio
Loss and Loss Expense Incurred Impact on
Combined Ratio
Change in Ratio
(Favorable) prior year casualty reserve development $ (4.0) (1.9) pts $ (10.0) (5.5) pts 3.6 pts
Nine Months 2021 Nine Months 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Combined Ratio
Loss and Loss Expense Incurred Impact on
Combined Ratio
Change in Ratio
(Favorable) prior year casualty reserve development $ (29.0) (4.9) pts $ (20.0) (3.9) pts (1.0) pts

The favorable prior year casualty reserve development in Third Quarter and Nine Months 2021 was primarily attributable to lower loss severities in accident years 2018 and prior. The Third Quarter and Nine Months 2020 reserve development was primarily attributable to favorable reserve development on loss severities in accident years 2017 and prior.

In addition to the items above, the combined ratio was favorably impacted by a decrease in the underwriting expense ratio of 1.4 points in Nine Months 2021 compared to Nine Months 2020, the drivers of which are consistent with the items discussed in the Standard Commercial Lines Segment above.

31

Commercial Automobile
Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in thousands) 2021 2020 2021 2020
NPW $ 197,459 169,885 16 % $ 594,011 498,892 19 %
Direct new business 28,968 26,808 8 91,120 87,808 4
Retention 87 % 87 pts 86 % 86 pts
Renewal pure price increases 7.9 8.4 (0.5) 8.6 7.8 0.8
NPE $ 185,610 160,937 15 % $ 535,519 449,162 19 %
Underwriting income (loss) (12,547) 2,603 (582) (5,514) (5,877) 6
Combined ratio 106.8 % 98.4 8.4 pts 101.0 % 101.3 (0.3) pts
% of total Standard Commercial Lines NPW 30 29 30 30

NPW growth benefited from renewal pure price increases, strong retention, and growth in direct new business, as shown in the table above. Additionally, NPW growth included a 4-point benefit in Nine Months 2021 due to the $15.4 million premium credit given to our commercial automobile customers as a result of the 2020 COVID-19 pandemic in the second quarter of 2020, as discussed in the Standard Commercial Lines discussion above, which did not recur in Nine Months 2021.

The fluctuations in the combined ratios illustrated in the table above included the following:
Third Quarter 2021 Third Quarter 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Combined Ratio
Loss and Loss Expense Incurred Impact on
Combined Ratio
Change in Ratio
Net catastrophe losses $ 8.3 4.4 pts $ 1.6 1.0 pts 3.4 pts
Non-catastrophe property loss and loss expenses 35.2 18.9 23.7 14.7 4.2
Total $ 43.5 23.3 $ 25.3 15.7 7.6

Nine Months 2021 Nine Months 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Combined Ratio
Loss and Loss Expense Incurred Impact on
Combined Ratio
Change in Ratio
Net catastrophe losses $ 8.9 1.7 pts $ 3.0 0.7 pts 1.0 pts
Non-catastrophe property loss and loss expenses 90.8 16.9 63.8 14.2 2.7
Unfavorable prior year casualty reserve development 10.0 2.2 (2.2)
Total $ 99.7 18.6 $ 76.8 17.1 1.5

Third Quarter and Nine Months 2021 experienced significant net catastrophe losses, predominately due to Hurricane Ida.

The Nine Months 2020 prior year casualty reserve development was primarily attributable to unfavorable reserve development on loss severities in accident years 2016 through 2019, and higher than expected claim frequencies in accident year 2019.

In addition to the items in the tables above, the combined ratio variances included the following:
A 0.6-point increase in the current year loss and loss expense ratio in Third Quarter and Nine Months 2021 compared to the same prior-year periods, primarily driven by increased claim frequencies in 2021. Last year experienced lower claim frequencies reflecting reductions in miles driven due to the COVID-19-related governmental directives impacting this line of business. Lower claim frequencies and lower non-catastrophe property losses provided an offset to the $15.4 million of premium credits to customers in 2020.

A 2.4-point decrease in the underwriting expense ratio in Nine Months 2021 compared to Nine Months 2020, the drivers of which are consistent with the items discussed in the Standard Commercial Lines Segment above.


32

Workers Compensation
Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in thousands) 2021 2020 2021 2020
NPW $ 76,317 73,009 5 % $ 249,099 199,189 25 %
Direct new business 15,408 11,477 34 47,355 39,446 20
Retention 86 % 85 1 pts 86 % 84 2 pts
Renewal pure price (decreases) increases (2.0) 2.0 (2.5) 2.5
NPE $ 78,318 75,595 4 % $ 230,845 204,207 13 %
Underwriting income 15,527 21,567 (28) 44,631 48,322 (8)
Combined ratio 80.2 % 71.5 8.7 pts 80.7 % 76.3 4.4 pts
% of total Standard Commercial Lines NPW 12 13 12 12

NPW increased 5% in Third Quarter 2021 and 25% in Nine Months 2021 compared to the same prior-year periods due to higher retention and increased direct new business. Additionally, NPW growth in Nine Months 2021 included a 16-point benefit due to the 2020 COVID-19-related $29 million estimate of return audit and mid-term endorsement premium recorded on this line in the first quarter of 2020, which did not recur in Nine Months 2021.

The increase in the combined ratio in Third Quarter and Nine Months 2021 compared to the same prior-year periods was driven by lower favorable prior year casualty reserve development, as follows:
Third Quarter 2021 Third Quarter 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Combined Ratio
Loss and Loss Expense Incurred Impact on
Combined Ratio
Change in Ratio
(Favorable) prior year casualty reserve development $ (8.0) (10.2) pts $ (15.0) (19.8) pts 9.6 pts
Nine Months 2021 Nine Months 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Combined Ratio
Loss and Loss Expense Incurred Impact on
Combined Ratio
Change in Ratio
(Favorable) prior year casualty reserve development $ (28.0) (12.1) pts $ (40.0) (19.6) pts 7.5 pts
The favorable prior year casualty reserve development in Third Quarter and Nine Months 2021 was primarily due to lower severities in accident years 2018 and prior, and the development in Third Quarter and Nine Months 2020 was primarily due to lower severities in accident years 2017 and prior.

In addition, the combined ratio was favorably impacted by a decrease in the underwriting expense ratio of 1.8 points in Nine Months 2021 compared to Nine Months 2020, the drivers of which are consistent with the items discussed in the Standard Commercial Lines Segment above.

Commercial Property
Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in thousands) 2021 2020 2021 2020
NPW $ 124,725 106,219 17 % $ 357,248 313,405 14 %
Direct new business 28,024 22,515 24 82,237 70,958 16
Retention 85 % 84 1 pts 84 % 84 pts
Renewal pure price increases
6.4 4.4 2.0 6.0 4.2 1.8
NPE $ 111,981 97,997 14 % $ 320,904 287,279 12 %
Underwriting income (loss) (12,137) (11,903) (2) 11,449 (34,794) 133
Combined ratio 110.8 % 112.1 (1.3) pts 96.4 % 112.1 (15.7) pts
% of total Standard Commercial Lines NPW 19 18 18 19

NPW grew 17% in Third Quarter 2021 and 14% in Nine Months 2021 compared to the same prior-year periods due to renewal pure price increases, strong retention, and direct new business growth.
33

The decrease in the combined ratio in Third Quarter and Nine Months 2021 compared to the same prior-year periods was driven by the following:
Third Quarter 2021 Third Quarter 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Combined Ratio
Loss and Loss Expense Incurred Impact on
Combined Ratio
Change in Ratio
Net catastrophe losses $ 32.8 29.3 pts 28.5 29.1 pts 0.2 pts
Non-catastrophe property loss and loss expenses 48.8 43.6 44.0 44.9 (1.3)
Total $ 81.6 72.9 72.5 74.0 (1.1)
Nine Months 2021 Nine Months 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Combined Ratio
Loss and Loss Expense Incurred Impact on
Combined Ratio
Change in Ratio
Net catastrophe losses $ 55.7 17.3 pts 83.4 29.0 pts (11.7) pts
Non-catastrophe property loss and loss expenses 133.7 41.7 127.9 44.5 (2.8)
Total $ 189.4 59.0 211.3 73.5 (14.5)

Third Quarter and Nine Months 2021 and 2020 experienced significant net catastrophe losses driven by the events discussed in the "Insurance Operations" section above.

Standard Personal Lines Segment
Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in thousands) 2021 2020 2021 2020
Insurance Segments Results:
NPW $ 78,247 79,697 (2) % $ 221,883 225,511 (2) %
NPE 73,362 75,976 (3) 220,476 223,737 (1)
Less:
Loss and loss expense incurred 65,123 69,667 (7) 160,273 182,150 (12)
Net underwriting expenses incurred 19,385 20,713 (6) 58,010 61,929 (6)
Underwriting income (loss) $ (11,146) (14,404) 23 % $ 2,193 (20,342) 111 %
Combined Ratios:
Loss and loss expense ratio 88.8 % 91.7 (2.9) pts 72.7 % 81.4 (8.7) pts
Underwriting expense ratio 26.4 27.3 (0.9) 26.3 27.7 (1.4)
Combined ratio 115.2 119.0 (3.8) 99.0 109.1 (10.1)

NPW decreased 2% in both Third Quarter and Nine Months 2021 compared to the same prior-year periods, primarily driven by direct new business that was not sufficient to compensate for the policies lost at renewal due to the challenging competitive environment in the personal auto line of business. Offsetting this decrease in Nine Months 2021 was the impact of the COVID-19-related premium credits to our personal automobile customers, which reduced NPW by $4.3 million in Nine Months 2020, and added two points of growth in Nine Months 2021 compared to Nine Months 2020, as these premium credits did not recur in Nine Months 2021.

Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in millions) 2021 2020 2021 2020
Direct new business 1
$ 10.2 12.1 (15) % $ 31.0 33.8 (8) %
Retention 84 % 83 1 pts 83 % 83 pts
Renewal pure price increases 1.2 1.8 (0.6) 1.0 2.9 (1.9)
1 Excludes our Flood direct premiums written which is 100% ceded to the NFIP and therefore, has no impact on our NPW.


34

The loss and loss expense ratio decreased 2.9 points in Third Quarter 2021 compared to Third Quarter 2020 and 8.7 points in Nine Months 2021 compared to Nine Months 2020 driven by the following:
Third Quarter 2021 Third Quarter 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Loss and Loss Expense Ratio
Loss and Loss
Expense
Incurred
Impact on
Loss and Loss Expense Ratio
Change in Ratio
Net catastrophe losses $ 19.5 26.7 pts 28.4 37.4 pts (10.7) pts
Non-catastrophe property loss and loss expenses 28.7 39.1 22.4 29.5 9.6
Flood claims handling fee reimbursement (2.9) (4.0) (1.4) (1.8) (2.2)
Total $ 45.3 61.8 49.4 65.1 (3.3)
Nine Months 2021 Nine Months 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Loss and Loss Expense Ratio
Loss and Loss
Expense
Incurred
Impact on
Loss and Loss Expense Ratio
Change in Ratio
Net catastrophe losses $ 30.1 13.7 pts 66.4 29.7 pts (16.0) pts
Non-catastrophe property loss and loss expenses 76.7 34.8 60.5 27.1 7.7
Flood claims handling fee reimbursement (4.5) (2.0) (2.9) (1.3) (0.7)
Total $ 102.3 46.5 124.0 55.5 (9.0)

Our Third Quarter 2021 losses were impacted by 18 events that were designated as catastrophes by Property Claims Services ("PCS"), a statistical reporting company, including Hurricane Ida in late August 2021 and early September 2021, which had the most significant impact on results. Partially offsetting these losses were $1.5 million of increased claims handling fee reimbursement, which is a benefit to loss and loss expenses incurred, on our flood book of business in Third Quarter 2021 compared to Third Quarter 2020, predominately related to Hurricane Ida. Nine Months 2021 results were also impacted by two severe thunderstorms, accompanied by wind and hail, occurring in March and June 2021. Third Quarter 2020 was impacted by 13 events that were designated as catastrophes by PCS, which included the derecho in the Midwestern states of our footprint, and Hurricane Isaias. Nine Months 2020 was affected by a March tornado in Tennessee and two severe April storms with damaging winds and tornadoes that impacted parts of the Midwestern and Eastern United States.

The underwriting expense ratio decreased 0.9 points in Third Quarter 2021 compared to Third Quarter 2020, driven mainly by a decrease of 0.5 points in profit-based compensation. The underwriting expense ratio decreased 1.4 points in Nine Months 2021 compared to Nine Months 2020. The underwriting expense ratio was elevated by 1.4 points in Nine Months 2020 for COVID-19-related items, as discussed in "Insurance Operations" above. The decrease in the underwriting expense ratio in Nine Months 2021 reflects the absence of these COVID-19-related impacts.

E&S Lines Segment
Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in thousands) 2021 2020 2021 2020
Insurance Segments Results:
NPW $ 82,056 62,057 32 % $ 227,109 186,550 22 %
NPE 74,314 60,480 23 203,783 177,509 15
Less:
Loss and loss expense incurred 46,643 47,090 (1) 131,850 119,685 10
Net underwriting expenses incurred 22,999 20,667 11 64,439 61,789 4
Underwriting income (loss) $ 4,672 (7,277) 164 % $ 7,494 (3,965) 289 %
Combined Ratios:
Loss and loss expense ratio 62.8 % 77.8 (15.0) pts 64.7 % 67.4 (2.7) pts
Underwriting expense ratio 30.9 34.2 (3.3) 31.6 34.8 (3.2)
Combined ratio 93.7 112.0 (18.3) 96.3 102.2 (5.9)

35

NPW grew 32% in Third Quarter 2021 and 22% in Nine Months 2021 compared to the same prior-year periods reflecting (i) renewal pure price increases, and (ii) direct new business increases, as shown in the following table:

Quarter ended September 30, Change
% or
Points
Nine Months ended September 30, Change
% or
Points
($ in millions) 2021 2020 2021 2020
Direct new business $ 35.7 29.7 20 % $ 100.7 85.5 18 %
Renewal pure price increases 5.6 7.0 (1.4) 6.5 5.8 0.7

The loss and loss expense ratio decreased 15.0 points in Third Quarter 2021 and 2.7 points in Nine Months 2021 compared to the same prior-year periods, primarily driven by the items outlined in the table below:
Third Quarter 2021 Third Quarter 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Loss and Loss Expense Ratio
Loss and Loss
Expense
Incurred
Impact on
Loss and Loss Expense Ratio
Change in Ratio
Net catastrophe losses $ 6.8 9.2 pts $ 11.8 19.5 pts (10.3) pts
Non-catastrophe property loss and loss expenses 4.8 6.5 8.0 13.2 (6.7)
Total $ 11.6 15.7 $ 19.8 32.7 (17.0)
Nine Months 2021 Nine Months 2020
($ in millions) Loss and Loss Expense Incurred Impact on
Loss and Loss Expense Ratio
Loss and Loss
Expense
Incurred
Impact on
Loss and Loss Expense Ratio
Change in Ratio
Net catastrophe losses $ 21.5 10.5 pts $ 18.8 10.6 pts (0.1) pts
Non-catastrophe property loss and loss expenses 21.5 10.5 19.3 10.9 (0.4)
(Favorable) prior year casualty reserve development (7.0) (3.4) (3.4)
Total $ 36.0 17.6 $ 38.1 21.5 (3.9)

Both Third Quarter 2021, driven by Hurricane Ida, and Third Quarter 2020, driven by Hurricane Laura, experienced elevated net catastrophe losses that exceeded our longer-term historical average. Nine Months 2021 was also impacted by a series of large storms that significantly impacted Texas and other Southern and Midwestern states. Nine Months 2020 included losses related to the civil unrest that occurred throughout the country in June of that year.

The favorable prior year casualty reserve development in Nine Months 2021 was primarily attributable to lower loss severities in accident years 2016 through 2018. There was no prior year casualty reserve development in Third Quarter 2021 or in Third Quarter and Nine Months 2020.

The underwriting expense ratio decreased 3.3 points in Third Quarter 2021 compared to Third Quarter 2020 and 3.2 points in Nine Months 2021 compared to Nine Months 2020. The primary drivers were (i) decreased labor expenses of 1.6 points in the quarter and 1.4 points in the year-to-date period, and (ii) decreased compensation to our distribution partners of 1.1 points in the quarter and 0.8 points in the year-to-date period as a result of the mix of premiums and corresponding commission rates. In addition, the underwriting expense ratio in Nine Months 2020 was elevated by 0.8 points for COVID-19-related increases in our allowance for credit losses on premiums receivable as discussed in "Insurance Operations" above. The decrease in the underwriting expense ratio in Nine Months 2021 reflects the absence of this COVID-19-related impact.

Reinsurance
We successfully completed negotiations of our July 1, 2021 excess of loss treaties, which provide coverage for our Standard Commercial Lines, Standard Personal Lines, and E&S Lines. The Casualty Excess of Loss (“Casualty Treaty”) was renewed with the same structure as the expiring treaty. The fiscal year 2022 treaty ceded deposit premium increased $9.5 million, or 16%, reflecting a slight rate increase coupled with higher projected subject earned premium.

The Property Excess of Loss (“Property Treaty”) was renewed with an increase in the retention on the first layer to $3.0 million from $2.0 million, thereby decreasing the coverage in excess of retention to $7.0 million from $8.0 million. The subsequent layers remained the same. The fiscal year 2022 treaty deposit premium increased $0.5 million, or 1%, reflecting a risk-adjusted rate increase along with an increase in projected subject premium, which was driven by growth in total insured values, insured locations, and rate increases. The increase was offset by the premium reduction benefit of the first layer retention increase.

36

The following table summarizes the Property Treaty and the Casualty Treaty arrangements covering our Insurance Subsidiaries:
Treaty Name Reinsurance Coverage Terrorism Coverage
Property Excess of Loss (covers all insurance operations)
$57 million above $3 million retention covering 100% in three layers. Losses other than TRIPRA certified losses are subject to the following reinstatements and annual aggregate limits:

- $7 million in excess of $3 million layer provides unlimited
reinstatements;
- $30 million in excess of $10 million layer provides three
reinstatements, $120 million in aggregate limits; and
- $20 million in excess of $40 million layer provides three
reinstatements, $80 million in aggregate limits.
All NBCR losses are excluded regardless of whether or not they are certified under TRIPRA. For non-NBCR losses, the treaty distinguishes between acts committed on behalf of foreign persons or foreign interests ("Foreign Terrorism") and those that are not. The treaty provides annual aggregate limits for Foreign Terrorism (other than NBCR) acts of $21 million for the first layer, $60 million for the second layer, and $40 million for the third layer. Non-foreign terrorism losses (other than NBCR) are covered to the same extent as non-terrorism losses.
Casualty Excess of Loss (covers all insurance operations)
There are six layers covering 100% of $88 million in excess of $2 million. Losses other than terrorism losses are subject to the following:

- $3 million in excess of $2 million layer provides 33
reinstatements, $102 million annual aggregate limit;
- $7 million in excess of $5 million layer provides six
reinstatements, $49 million annual aggregate limit;
- $9 million in excess of $12 million layer provides three
reinstatements, $36 million annual aggregate limit;
- $9 million in excess of $21 million layer provides one
reinstatement, $18 million annual aggregate limit;
- $20 million in excess of $30 million layer provides one
reinstatement, $40 million annual aggregate limit; and
- $40 million in excess of $50 million layer provides one
reinstatement, $80 million annual aggregate limit.
All NBCR losses are excluded. All other losses stemming from the acts of terrorism are subject to the following:

- $3 million in excess of $2 million layer with $15 million net
annual terrorism aggregate limit;
- $7 million in excess of $5 million layer with $28 million net
annual terrorism aggregate limit;
- $9 million in excess of $12 million layer with $27 million net
annual terrorism aggregate limit;
- $9 million in excess of $21 million layer with $18 million net
annual terrorism aggregate limit;
- $20 million in excess of $30 million layer with $40 million
net annual terrorism aggregate limit; and
- $40 million in excess of $50 million layer with $80 million
net annual terrorism aggregate limit.

Investments
The primary objective of the investment portfolio is to maximize after-tax net investment income and overall total return while maintaining a high credit quality core fixed income securities portfolio and managing our duration risk profile. The effective duration of our fixed income and short-term investments was 4.0 years as of September 30, 2021, compared to the Insurance Subsidiaries' net Reserve for loss and loss expense duration of approximately 3.7 years at December 31, 2020. The effective duration of the investment portfolio is monitored and managed to maximize yield while managing interest rate risk at an acceptable level. We maintain a well-diversified portfolio across sectors, with credit quality and maturities that provide ample liquidity. Purchases and sales are intended to maximize investment returns in the current market environment while balancing capital preservation.

Our fixed income and short-term investments represented 91% of our invested asset fair value at September 30, 2021, and 92% at December 31, 2020. At September 30, 2021, these investments had a weighted average credit rating of "A+" compared to “AA-” as of December 31, 2020, with a 96% allocation to investment grade holdings at both September 30, 2021 and December 31, 2020. The decline in the weighted average credit rating reflects a meaningful reduction in our sector allocation to agency residential mortgage-backed securities over the past year as lower interest rates accelerated prepayments as we had expected. Given the very low reinvestment rates for this asset class, we have reallocated these non-sale disposal cash flows into other high-quality fixed income sectors, including corporate securities and other asset-backed security classes that do not carry a "AAA" rating, but in our view currently offer a better risk and reward trade-off.

Total Invested Assets
($ in thousands) September 30, 2021 December 31, 2020 Change
Total invested assets $ 7,859,226 7,505,599 5 %
Invested assets per dollar of common stockholders' equity 2.89 2.96 (2)
Unrealized gain – before tax 1
307,740 395,207 (22)
Unrealized gain – after tax 1
243,115 312,214 (22)
1 Includes unrealized gains on fixed income and equity securities.

Invested assets increased as of September 30, 2021, compared to December 31, 2020, reflecting operating cash flows during Nine Months 2021 of $543.3 million that were 22% of NPW, partially offset by a decrease in pre-tax unrealized gains of $87.5 million. The decrease in gross unrealized gains during Nine Months 2021 was driven by an increase in longer-dated benchmark United States Treasury rates, partially offset by tightening credit spreads.

For further details on the composition, credit quality, and various risks to which our portfolio is subject, see Item 7A. “Quantitative and Qualitative Disclosures About Market Risk.” of our 2020 Annual Report.

37

Net Investment Income
The components of net investment income earned were as follows:
Quarter ended September 30, Change
% or Points
Nine Months ended September 30, Change
% or Points
($ in thousands) 2021 2020 2021 2020
Fixed income securities $ 51,683 51,285 1 % $ 157,114 152,617 3 %
Commercial mortgage loans ("CMLs") 683 245 179 1,892 463 309
Equity securities 2,955 1,948 52 8,425 5,523 53
Short-term investments 64 244 (74) 204 1,830 (89)
Other investments 42,865 18,671 130 93,158 9,167 916
Investment expenses (5,218) (4,208) 24 (14,314) (11,004) 30
Net investment income earned – before tax 93,032 68,185 36 246,479 158,596 55
Net investment income tax expense (18,342) (13,054) 41 (48,005) (29,440) 63
Net investment income earned – after tax $ 74,690 55,131 35 $ 198,474 129,156 54
Effective tax rate 19.7 % 19.1 0.6 pts 19.5 % 18.6 0.9 pts
Annualized after-tax yield on fixed income investments 2.5 2.6 (0.1) 2.6 2.6
Annualized after-tax yield on investment portfolio 3.8 3.1 0.7 3.4 2.5 0.9

The increase in after-tax net investment income in Third Quarter and Nine Months 2021 compared to Third Quarter and Nine Months 2020 was driven by higher returns from alternative investments, which are included within other investments, and generated $42.8 million of income in Third Quarter 2021 and $92.9 million in Nine Months 2021, compared to income of $18.7 million and $8.9 million in the same prior-year periods, respectively. These results principally reflect unrealized gains on our private equity holdings that benefited from the upward movement in private market valuations in the three and nine-month periods ending June 30, 2021, as our results on these holdings are recorded on a one-quarter lag.

Realized and Unrealized Gains and Losses
Our general investment philosophy for sales of securities is to (i) reduce our exposure to securities and sectors that we have evaluated and determined have deteriorated economic fundamentals, or (ii) determine appropriate timing for an opportunistic trade for other securities or sectors with better economic-return characteristics. Net realized and unrealized gains and losses for the indicated periods were as follows:
Quarter ended September 30, Change % Nine Months ended September 30, Change %
($ in thousands) 2021 2020 2021 2020
Net realized gains on disposals $ 4,646 573 711 % $ 4,119 7,288 (43) %
Net unrealized (losses) gains equity securities (3,111) 4,338 (172) 15,830 (7,098) (323)
Net credit loss (expense) benefit on fixed income securities, AFS (1,334) 2,853 (147) (4,059) (8,011) (49)
Net credit loss benefit (expense) on fixed income securities, held-to-maturity 6 3 100 (54) 4 (1,450)
Net credit loss benefit (expense) on CMLs (2) (100) (220) (100)
Losses on securities for which we have the intent to sell (30) (44) (32) (483) (16,259) (97)
Total net realized and unrealized gains (losses) $ 177 7,721 (98) $ 15,353 (24,296) (163)

The improvement in net realized and unrealized gains in Nine Months 2021 compared to Nine Months 2020 was primarily driven by (i) unrealized gains on our equity securities this year compared to unrealized losses last year, which were driven by COVID-19-related market disruption last year, and (ii) lower intent-to-sell losses this year as we provided our investment managers significant trading flexibility last year given market conditions.

38

Federal Income Taxes
The following table provides information about federal income taxes and reconciles federal income tax at the corporate rate to the effective tax rate:
Quarter ended September 30, Nine Months ended September 30,
($ in thousands) 2021 2020 2021 2020
Tax at statutory rate $ 19,454 17,904 $ 80,108 30,229
Tax-advantaged interest (1,114) (1,184) (3,432) (3,569)
Dividends received deduction (101) (94) (377) (314)
Executive compensation 566 607 1,536 1,322
Stock-based compensation (29) 2 (652) (1,828)
Other 155 (1,853) (575) (1,187)
Federal income tax expense 18,931 15,382 76,608 24,653
Income before federal income tax, less preferred stock dividends 90,336 85,257 374,413 143,947
Effective tax rate 21.0 % 18.0 20.5 17.1

Financial Condition, Liquidity, and Capital Resources
Capital resources and liquidity reflect our ability to generate cash flows from business operations, borrow funds at competitive rates, and raise new capital to meet operating and growth needs.

Liquidity
We manage liquidity by focusing on generating sufficient cash flows to meet the short-term and long-term cash requirements of our business operations.

Sources of Liquidity
Sources of cash for the Parent historically have consisted of dividends from the Insurance Subsidiaries, the investment portfolio held by the Parent, borrowings under third-party lines of credit, loan agreements with certain Insurance Subsidiaries, and the issuance of equity and debt securities. We continue to monitor these sources, giving consideration to our long-term liquidity and capital preservation strategies.

The Parent's investment portfolio includes (i) short-term investments that are generally maintained in “AAA” rated money market funds approved by the National Association of Insurance Commissioners, (ii) high-quality, highly liquid government and corporate fixed income securities; (iii) equity securities; (iv) other investments, and (v) a cash balance. In the aggregate, Parent cash and total investments amounted to $515 million at September 30, 2021, and $490 million at December 31, 2020.

The composition of the Parent's investment portfolio may change over time based upon various factors, including the amount and availability of dividends from our Insurance Subsidiaries, investment income, expenses, other Parent cash needs, such as dividends payable to shareholders, asset allocation investment decisions, inorganic growth opportunities, retirement of debt, and share repurchases. Our target for the Parent is to maintain highly liquid investments matching at least twice its expected annual needs, which is currently estimated at $180 million.

Insurance Subsidiary Dividends
The Insurance Subsidiaries generate liquidity through insurance float, which is created by collecting premiums and earning investment income before claims are paid. The period of float can extend over many years. Our investment portfolio consists of maturity dates that continually provide a source of cash flow for claims payments in the ordinary course of business. As protection for the capital resources at the Insurance Subsidiaries, we purchase reinsurance coverage for any significantly large claims or catastrophes that may occur.

The Insurance Subsidiaries paid $105 million in total dividends to the Parent during Nine Months 2021. As of December 31, 2020, our allowable ordinary maximum dividend was $241 million for 2021. All Insurance Subsidiary dividends to the Parent are (i) subject to the approval and/or review of its domiciliary state insurance regulator, and (ii) generally payable only from earned surplus reported in its statutory annual statements as of the preceding December 31. Although domiciliary state insurance regulators historically have approved dividends, there is no assurance they will approve future Insurance Subsidiary dividends.

New Jersey corporate law also limits the maximum amount of dividends the Parent can pay our shareholders if either (i) the Parent would be unable to pay its debts as they became due in the usual course of business, or (ii) the Parent’s total assets would be less than its total liabilities. The Parent’s ability to pay dividends to shareholders is also impacted by (i) covenants in its credit agreement (discussed below under "Line of Credit") that obligate it, among other things, to maintain a minimum consolidated net worth and a maximum ratio of consolidated debt to total capitalization, and (ii) the terms of our preferred stock
39

that prohibit dividends to be declared or paid on our common stock if dividends are not declared and paid, or made payable, on all outstanding preferred stock for the latest completed dividend period.

For additional information regarding dividend restrictions and financial covenants, where applicable, see Note 11. "Indebtedness", Note 17. "Preferred Stock", and Note 22. “Statutory Financial Information, Capital Requirements, and Restrictions on Dividends and Transfers of Funds” in Item 8. “Financial Statements and Supplementary Data.” of our 2020 Annual Report.

Line of Credit
On December 20, 2019, the Parent entered into a Credit Agreement with the lenders named therein (the “Lenders”) and the Bank of Montreal, Chicago Branch, as Administrative Agent ("Line of Credit"). Under the Line of Credit, the Lenders have agreed to provide the Parent with a $50 million revolving credit facility that can be increased to $125 million with the Lenders' consent. The Line of Credit will mature on December 20, 2022, and has a variable interest rate based on, among other factors, the Parent’s debt ratings.

For additional information regarding the Line of Credit and corresponding representations, warranties, and covenants, refer to Note 11. "Indebtedness" in Item 8. "Financial Statements and Supplementary Data." of our 2020 Annual Report. We met all covenants under our Line of Credit as of September 30, 2021.

Several Insurance Subsidiaries are members of Federal Home Loan Bank branches, as shown in the following table. Membership requires the ownership of branch stock and includes the right to borrow and gain access to liquidity. All FHLBI and FHLBNY borrowings are required to be secured by investments pledged as collateral. For additional information regarding collateral outstanding, refer to Note 4. "Investments" in Item 1. "Financial Statements." of this Form 10-Q:
Branch Insurance Subsidiary Member
FHLBI
Selective Insurance Company of South Carolina ("SICSC") 1
Selective Insurance Company of the Southeast ("SICSE") 1
FHLBNY Selective Insurance Company of America ("SICA")
Selective Insurance Company of New York ("SICNY")
1 These subsidiaries are jointly referred to as the "Indiana Subsidiaries" as they are domiciled in Indiana.

The Line of Credit permits aggregate borrowings from the FHLBI and the FHLBNY up to 10% of the respective member company’s admitted assets for the previous year. Additionally, as SICNY is domiciled in New York, its FHLBNY borrowings are limited by New York insurance regulations to the lower of 5% of admitted assets for the most recently completed fiscal quarter, or 10% of admitted assets for the previous year-end. As of September 30, 2021, we had remaining capacity of $389 million for Federal Home Loan Bank borrowings, with a $14.5 million additional stock purchase requirement to allow the member companies to borrow their full remaining capacity amounts.

Short-term Borrowings
We did not make any short-term borrowings during Nine Months 2021.

Intercompany Loan Agreements
The Parent has lending agreements with the Indiana Subsidiaries approved by the Indiana Department of Insurance that provide it additional liquidity. Similar to the Line of Credit, these lending agreements limit the Parent's borrowings from the Indiana Subsidiaries to 10% of the admitted assets of the respective Indiana Subsidiary. The outstanding balance on these intercompany loans was $40.0 million as of both September 30, 2021, and December 31, 2020. The remaining capacity under these intercompany loan agreements was $97.1 million as of both September 30, 2021, and December 31, 2020.

Capital Market Activities
The Parent had no private or public issuances of stock during Nine Months 2021. In the fourth quarter of 2020, we enhanced our capital structure flexibility at the Parent by issuing $200 million of 4.60% non-cumulative perpetual preferred stock. Net proceeds after issuance costs were approximately $195 million. The Parent is using these proceeds for general corporate purposes, which may include the repurchase of common stock under a $100 million share repurchase program authorized by our Board in conjunction with the preferred stock offering. During Nine Months 2021, we repurchased 52,781 shares of our common stock under this authorization at a cost of approximately $3.4 million, with a $64.49 average price per share, with all share repurchases made in the first quarter of 2021. We have $96.6 million of remaining capacity under our share repurchase program.

40

Uses of Liquidity
The Parent's liquidity generated from the sources discussed above is used, among other things, to pay dividends to our shareholders. Dividends on shares of the Parent's common and preferred stock are declared and paid at the discretion of the Board of Directors based on our operating results, financial condition, capital requirements, contractual restrictions, and other relevant factors. On October 27, 2021, our Board of Directors declared:

A cash dividend of $0.28 per common share that is payable December 1, 2021 to holders of record as of November 15, 2021; and
A cash dividend of $287.50 per share on our 4.60% Non-Cumulative Preferred Stock, Series B (equivalent to $0.28750 per depository share) that is payable on December 15, 2021 to holders of record as of November 30, 2021.

Our ability to meet our interest and principal repayment obligations on our debt, as well as our ability to continue to pay dividends to our stockholders, is dependent on (i) liquidity at the Parent, (ii) the ability of the Insurance Subsidiaries to pay dividends, if necessary, and/or (iii) the availability of other sources of liquidity to the Parent. In Third Quarter 2021, we repaid our (i) $25 million 1.61% borrowing, and (ii) $25 million 1.56% borrowing from the FHLBNY. These repayments increased our remaining Federal Home Loan Bank borrowing capacity to $389 million, from $339 million, and increased the related additional stock purchase requirement to $14.5 million, from $12.2 million, for the member companies to borrow their full remaining capacity amounts. Our next Federal Home Loan borrowing principal repayment is $60 million to FHLBI due on December 16, 2026.

Restrictions on the ability of the Insurance Subsidiaries to declare and pay dividends, without alternative liquidity options, could materially affect our ability to service debt and pay dividends on common and preferred stock.

Capital Resources
Capital resources ensure we can pay policyholder claims, furnish the financial strength to support the business of underwriting insurance risks, and facilitate continued business growth. At September 30, 2021, we had GAAP stockholders' equity of $2.9 billion and statutory surplus of $2.3 billion. With total debt of $500.9 million at September 30, 2021, our debt-to-capital ratio was 14.6%. For additional information on our statutory surplus, see Note 22. "Statutory Financial Information, Capital Requirements, and Restrictions on Dividends and Transfers of Funds" in Item 8. "Financial Statements and Supplementary Data." of our 2020 Annual Report.

Our cash requirements include, without limitation, principal and interest payments on various notes payable, dividends to stockholders, payment of claims, payment of commitments under limited partnership agreements, capital expenditures, and other operating expenses, including commissions to our distribution partners, labor costs, premium taxes, general and administrative expenses, and income taxes. For further details regarding our cash requirements, refer to the section below entitled, “Contractual Obligations, Contingent Liabilities, and Commitments.”

We continually monitor our cash requirements and the amount of capital resources we maintain at the holding company and operating subsidiary levels. As part of our long-term capital strategy, we strive to maintain capital metrics that support our targeted financial strength relative to the macroeconomic environment. Based on our analysis and market conditions, we may take a variety of actions, including, without limitation, contributing capital to the Insurance Subsidiaries, issuing additional debt and/or equity securities, repurchasing existing debt, repurchasing shares of the Parent’s common stock, and increasing common stockholders’ dividends.

Our capital management strategy is intended to protect the interests of the policyholders of the Insurance Subsidiaries and our stockholders, while enhancing our financial strength and underwriting capacity. We have an attractive book of business and solid capital base, positioning us well to take advantage of market opportunities that may arise.

Book value per common share increased 7% to $45.27 as of September 30, 2021, from $42.38 as of December 31, 2020, driven by $4.92 in net income per share, and partially offset by $1.36 of lower unrealized gains on our fixed income securities portfolio and $0.75 in dividends to our common stockholders.

41

Ratings
Our ratings remain the same as reported in our "Overview" section of Item 1. "Business." of our 2020 Annual Report and are as follows:
NRSRO Financial Strength Rating Outlook
AM Best Company A Positive
Moody's Investors Services ("Moody's") A2 Stable
Fitch Ratings ("Fitch") A+ Stable
Standard & Poor's Global Ratings ("S&P Global") A Stable

On April 2, 2021, Fitch reaffirmed our "A+" rating with a "stable" outlook. In taking this rating action, Fitch cited our strong capitalization, financial performance, stable underwriting results, and return metrics that have remained favorable compared to peers.

On May 6, 2021, Moody’s reaffirmed our "A2" rating with a "stable" outlook. In taking this action, Moody’s cited our (i) strong underwriting profitability, financial leverage, and coverage metrics, (ii) conservative investment portfolio, and (iii) strong regional franchise presence and established independent agency support.

On October 15, 2021, S&P Global reaffirmed our “A” rating with a “stable” outlook. In taking this action, S&P cited our strong financial and business risk profiles, driven by strong capital adequacy and operating performance.

Off-Balance Sheet Arrangements
At September 30, 2021, and December 31, 2020, we had no material relationships with unconsolidated entities or financial partnerships, such as structured finance or special purpose entities, established to facilitate off-balance sheet arrangements or other contractually narrow or limited purposes. Consequently, we are not exposed to any material financing, liquidity, market, or credit risk related to off-balance sheet arrangements.

Contractual Obligations, Contingent Liabilities, and Commitments
Our future cash payments associated with (i) loss and loss expense reserves, (ii) contractual obligations pursuant to operating and financing leases for office space and equipment, and (iii) notes payable have not materially changed since December 31, 2020. At September 30, 2021, we had certain contractual obligations that may require us to invest additional amounts in our investment portfolio as follows:
($ in millions) Amount of Obligation Year of Expiration of Obligation
Alternative and other investments $ 219.2 2036
Non-publicly traded collateralized loan obligations in our fixed income securities portfolio 38.3 2030
Non-publicly traded common stock within our equity portfolio 5.3 2027
CMLs 5.3 2023
Privately-placed corporate securities 9.5 Less than a year
Total $ 277.6

There is no certainty that any such additional investment will be required. We expect to have the capacity to repay and/or refinance these obligations as they come due.

We have issued no material guarantees on behalf of others and have no trading activities involving non-exchange traded contracts accounted for at fair value. For additional details on transactions with related parties, see Note 18. "Related Party Transactions" in Item 8. "Financial Statements and Supplementary Data." of our 2020 Annual Report.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

There have been no material changes in the information about market risk set forth in our 2020 Annual Report. While not reflective of a material shift in the overall risk/return characteristics of our fixed income and short-term investments, the aggregate weighted average credit rating of these portfolios decreased to "A+" in 2021, from “AA-” as of December 31, 2020. The decline in the weighted average credit rating reflects a meaningful reduction in our sector allocation to agency residential mortgage-backed securities over the past year as lower interest rates accelerated prepayments, as we had expected. Given the very low reinvestment rates for this asset class, we have reallocated these non-sale disposal cash flows into other high-quality fixed income sectors, including corporate securities and other asset-backed security classes that do not carry a "AAA" rating, but in our view currently offer a better risk and reward trade-off.

42

ITEM 4. CONTROLS AND PROCEDURES.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), as of the end of the period covered by this report. In performing this evaluation, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in Internal Control Integrated Framework ("COSO Framework") in 2013. Based on this evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures as of the end of such period are (i) effective in recording, processing, summarizing, and reporting information on a timely basis that we are required to disclose in the reports that we file or submit under the Exchange Act, and (ii) effective in ensuring that information that we are required to disclose in the reports that we file or submit under the Exchange Act is appropriately accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, to allow timely decisions about required disclosure. No changes in our internal control over financial reporting (as such term is defined in Rule 13a-15(f) of the Exchange Act) occurred during Third Quarter 2021 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS.

Incidental to our insurance operations, we are engaged in ordinary routine legal proceedings that, because litigation outcomes are inherently unpredictable, could have a material adverse effect on our consolidated results of operations or cash flows in particular quarterly or annual periods. For additional information regarding our legal risks, refer to Note 13. "Litigation" in Item 1. "Financial Statements." of this Form 10-Q and Item 1A. “Risk Factors.” below in Part II. “Other Information.” As of September 30, 2021, we have no material pending legal proceedings that could have a material adverse effect on our consolidated financial condition, results of operations, or cash flows.

ITEM 1A. RISK FACTORS.

Certain risk factors can significantly impact our business, liquidity, capital resources, results of operations, financial condition, and debt ratings. These risk factors might affect, alter, or change actions we might take executing our long-term capital strategy. Examples include, without limitation, contributing capital to any or all of the Insurance Subsidiaries, issuing additional debt and/or equity securities, repurchasing our existing debt and/or equity securities, or increasing or decreasing stockholders' dividends. We operate in a continually changing business environment and new risk factors emerge from time to time. Consequently, we can neither predict such new risk factors nor assess the potential future impact, if any, they might have on our business. Except as discussed below, there have been no material changes from the risk factors disclosed in Item 1A. “Risk Factors.” in our 2020 Annual Report.

During 2021, the risk of broad economic inflation has emerged as a heightened risk relative to the risk factor discussed in our 2020 Annual Report. Inflation levels accelerated in 2021 with the overall consumer price index ("CPI"), the Core CPI, and the Producer Price Index all showing elevated levels compared to last year. As discussed in more detail in our 2020 Annual Report, inflation has significant potential impacts to our claims severity across multiple lines of business and could also cause higher levels of reserve development. Additionally, if heightened levels of economic inflation are tied to higher interest rate yields on fixed income securities, it could increase unrealized losses on our fixed income securities and lower total returns from our other invested assets.

In addition, to varying degrees, the effect, lifting, or lapsing of COVID-19-related governmental directives in 2021 have disrupted supply chains and caused shortages of products, services, and labor. These shortages may impact our ability to attract and retain labor, including increasing attrition rates, wages, and the cost and difficulty of obtaining third-party non-U.S.-based resources.
43

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.

The following table provides information about our purchases of our common stock in Third Quarter 2021:
Period
Total Number of
Shares Purchased 1
Average Price
Paid per Share
Total Number of
Shares Purchased
as Part of Publicly
Announced Programs
Approximate Dollar Value of
Shares that May Yet
Be Purchased Under the Announced Programs
(in millions) 2
July 1 – 31, 2021 514 $ 78.56 $ 96.6
August 1 – 31, 2021 96.6
September 1 – 30, 2021 229 77.38 96.6
Total 743 $ 78.20 $ 96.6
1 We purchased these shares from employees to satisfy tax withholding obligations associated with the vesting of their restricted stock units.
2 On December 2, 2020, we announced that our Board of Directors authorized a $100 million share repurchase program, which has no set expiration or termination date. Our repurchase program does not obligate us to acquire any particular amount of our common stock, and the repurchase program may be suspended or discontinued at any time at our discretion. The timing and amount of any share repurchases under the authorization will be determined by management at its discretion and based on market conditions and other considerations.

ITEM 6. EXHIBITS.
Exhibit No.
Employment Agreement between Selective Insurance Company of America and Brenda M. Hall, dated as of September 30, 2019.
Employment Agreement between Selective Insurance Company of America and Paul Kush, dated as of December 5, 2019.
Employment Agreement between Selective Insurance Company of America and Vincent M. Senia, dated as of June 6, 2017.
Statement Re: Computation of Per Share Earnings.
Certification of Chief Executive Officer in accordance with Section 302 of the Sarbanes-Oxley Act of 2002.
Certification of Chief Financial Officer in accordance with Section 302 of the Sarbanes-Oxley Act of 2002.
Certification of Chief Executive Officer in accordance with Section 906 of the Sarbanes-Oxley Act of 2002.
Certification of Chief Financial Officer in accordance with Section 906 of the Sarbanes-Oxley Act of 2002.
*101
The following financial statements from the Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, formatted in Inline Extensible Business Reporting Language (iXBRL): (i) Consolidated Balance Sheets, (ii) Consolidated Statements of Income, (iii) Consolidated Statements of Comprehensive Income, (iv) Consolidated Statements of Stockholders' Equity, (v) Consolidated Statements of Cash Flows and (vi) Notes to Consolidated Financial Statements.
*104
The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, formatted in iXBRL.
* Filed herewith.
** Furnished and not filed herewith.
+ Management compensation plan or arrangement.





44

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Report to be signed on its behalf by the undersigned thereunto duly authorized.

SELECTIVE INSURANCE GROUP, INC.
Registrant
Date: October 28, 2021 By: /s/ John J. Marchioni
John J. Marchioni
President and Chief Executive Officer
(principal executive officer)
Date: October 28, 2021 By: /s/ Mark A. Wilcox
Mark A. Wilcox
Executive Vice President and Chief Financial Officer
(principal financial officer)

45
TABLE OF CONTENTS
Part I. Financial InformationItem 1. Financial StatementsNote 1. Basis Of PresentationNote 2. Adoption Of Accounting PronouncementsNote 3. Statements Of Cash FlowsNote 4. InvestmentsNote 5. Fair Value MeasurementsNote 6. Allowance For Credit Losses on Premiums ReceivableNote 7. ReinsuranceNote 8. Reserve For Loss and Loss ExpenseNote 9. Segment InformationNote 10. Retirement PlansNote 11. Comprehensive IncomeNote 12. EquityNote 13. LitigationItem 2. Management's Discussion and Analysis Of Financial Condition and Results Of OperationsItem 3. Quantitative and Qualitative Disclosures About Market RiskItem 4. Controls and ProceduresPart II. Other InformationItem 1. Legal ProceedingsItem 1A. Risk FactorsItem 2. Unregistered Sales Of Equity Securities and Use Of ProceedsItem 6. Exhibits

Exhibits

10.1*+ Employment Agreement between Selective Insurance Company of America and Brenda M. Hall, dated as of September 30, 2019. 10.2*+ Employment Agreement between Selective Insurance Company of America and Paul Kush, dated as of December 5, 2019. 10.3*+ Employment Agreement between Selective Insurance Company of America and Vincent M. Senia, dated as of June 6, 2017. *11 Statement Re: Computation of Per Share Earnings. *31.1 Certification of Chief Executive Officer in accordance with Section 302 of the Sarbanes-Oxley Act of 2002. *31.2 Certification of Chief Financial Officer in accordance with Section 302 of the Sarbanes-Oxley Act of 2002. **32.1 Certification of Chief Executive Officer in accordance with Section 906 of the Sarbanes-Oxley Act of 2002. **32.2 Certification of Chief Financial Officer in accordance with Section 906 of the Sarbanes-Oxley Act of 2002.