TER 10-Q Quarterly Report Sept. 28, 2025 | Alphaminr

TER 10-Q Quarter ended Sept. 28, 2025

TERADYNE, 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
10-Q
Q3 --12-31 false 0000097210 http://fasb.org/us-gaap/2025#OtherAssetsNoncurrent http://fasb.org/us-gaap/2025#OtherAssetsNoncurrent http://fasb.org/us-gaap/2025#OtherAssetsNoncurrent http://fasb.org/us-gaap/2025#OtherAssetsNoncurrent http://fasb.org/us-gaap/2025#DeferredTaxAndOtherLiabilitiesNoncurrent http://fasb.org/us-gaap/2025#DeferredTaxAndOtherLiabilitiesNoncurrent http://fasb.org/us-gaap/2025#DeferredTaxAndOtherLiabilitiesNoncurrent http://fasb.org/us-gaap/2025#DeferredTaxAndOtherLiabilitiesNoncurrent http://fasb.org/us-gaap/2025#IntangibleAssetsNetExcludingGoodwill http://fasb.org/srt/2025#ChiefExecutiveOfficerMember 0000097210 ter:UsQualifiedPensionPlanMember 2025-06-30 2025-09-28 0000097210 us-gaap:ForeignPlanMember 2025-06-30 2025-09-28 0000097210 ter:AccumulatedNetUnrealizedLossesOnCashFlowHedgesMember 2024-12-31 0000097210 ter:CorporateAndEliminationsMember 2025-01-01 2025-09-28 0000097210 us-gaap:CustomerRelationshipsMember 2024-12-31 0000097210 ter:SocMember us-gaap:EMEAMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:CallOptionMember ter:TechnoprobeMember 2023-11-07 0000097210 us-gaap:ProductMember 2024-07-01 2024-09-29 0000097210 us-gaap:EmployeeStockOptionMember 2025-01-01 2025-09-28 0000097210 ter:ProductTestMember us-gaap:EMEAMember 2025-06-30 2025-09-28 0000097210 ter:ForeignCurrencyTranslationAdjustmentsMember 2023-12-31 0000097210 ter:LongTermMarketableSecuritiesMember 2024-12-31 0000097210 us-gaap:NondesignatedMember us-gaap:ForeignExchangeForwardMember us-gaap:OtherNonoperatingIncomeExpenseMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:RestrictedStockUnitsRSUMember 2024-01-01 2024-09-29 0000097210 us-gaap:CallOptionMember ter:TechnoprobeMember 2023-11-07 2023-11-07 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:CertificatesOfDepositMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 srt:AmericasMember 2024-07-01 2024-09-29 0000097210 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2024-01-01 2024-09-29 0000097210 ter:UniversalRobotsMember ter:RoboticsMember 2024-07-01 2024-09-29 0000097210 2023-12-31 0000097210 ter:ProductTestMember us-gaap:TransferredOverTimeMember 2024-07-01 2024-09-29 0000097210 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2025-01-01 2025-06-29 0000097210 ter:CorporateAndEliminationsMember 2024-01-01 2024-09-29 0000097210 us-gaap:TransferredAtPointInTimeMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember ter:LongTermMarketableSecuritiesMember 2024-12-31 0000097210 ter:ProductTestMember ter:QuantifiMember 2024-01-01 2024-12-31 0000097210 ter:ProductTestMember 2024-01-01 2024-12-31 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-06-30 0000097210 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2024-07-01 2024-09-29 0000097210 us-gaap:ServiceMember 2025-01-01 2025-09-28 0000097210 us-gaap:CommonStockMember 2024-12-31 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 currency:KRW 2024-12-31 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CashMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:ServiceBasedRestrictedStockUnitsMember ter:NonEmployeeDirectorsMember 2024-01-01 2024-09-29 0000097210 srt:AmericasMember ter:ISTMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2025-01-01 2025-09-28 0000097210 2024-01-31 0000097210 ter:ProductTestMember us-gaap:OperatingSegmentsMember 2025-06-30 2025-09-28 0000097210 us-gaap:OperatingSegmentsMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:ForeignCurrencyTranslationAdjustmentsMember 2024-09-29 0000097210 2024-05-27 2024-05-27 0000097210 us-gaap:RetainedEarningsMember 2024-09-29 0000097210 ter:ProductTestMember ter:AutomatedTestEquipmentTechnologyAndAssociatedDevelopmentTeamMember 2024-01-01 2024-12-31 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:OperatingSegmentsMember ter:SemiconductorTestMember 2024-09-29 0000097210 us-gaap:CashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:LongTermContractWithCustomerMember srt:MaximumMember 2025-01-01 2025-09-28 0000097210 ter:ProductTestMember 2025-06-30 2025-09-28 0000097210 ter:ProductTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2025-06-30 2025-09-28 0000097210 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:TrademarksAndTradeNamesMember 2024-12-31 0000097210 ter:PrepaidExpenseMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 2025-06-29 0000097210 ter:ProductTestMember us-gaap:OperatingSegmentsMember 2025-01-01 2025-09-28 0000097210 currency:PHP 2024-12-31 0000097210 srt:AmericasMember ter:MemoryMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:CashMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:TransferredAtPointInTimeMember 2024-01-01 2024-09-29 0000097210 srt:ExecutiveOfficerMember ter:ServiceBasedStockOptionsMember 2024-01-01 2024-09-29 0000097210 ter:ISTMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:TransferredAtPointInTimeMember 2025-06-30 2025-09-28 0000097210 ter:ISTMember us-gaap:TransferredOverTimeMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 currency:EUR 2025-09-28 0000097210 us-gaap:TransferredAtPointInTimeMember ter:SocMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 ter:ISTMember us-gaap:TransferredAtPointInTimeMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 srt:AmericasMember ter:ProductTestMember 2025-06-30 2025-09-28 0000097210 ter:UniversalRobotsMember ter:RoboticsMember srt:AsiaPacificMember 2024-07-01 2024-09-29 0000097210 ter:ProductTestMember us-gaap:OperatingSegmentsMember 2024-09-29 0000097210 currency:PHP 2025-09-28 0000097210 ter:CorporateAndEliminationsMember 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member ter:MarketableSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:RoboticsMember 2025-01-01 2025-09-28 0000097210 ter:TechnoprobeMember 2023-11-07 0000097210 us-gaap:FairValueInputsLevel3Member ter:PrepaidExpenseMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:NondesignatedMember us-gaap:ForeignExchangeForwardMember us-gaap:OtherNonoperatingIncomeExpenseMember 2024-01-01 2024-09-29 0000097210 currency:CNY 2025-09-28 0000097210 us-gaap:ForeignExchangeOptionMember us-gaap:NondesignatedMember us-gaap:OtherNonoperatingIncomeExpenseMember 2024-01-01 2024-09-29 0000097210 ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:OperatingSegmentsMember ter:RoboticsMember 2025-09-28 0000097210 ter:ForeignCurrencyTranslationAdjustmentsMember 2024-12-31 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2025-01-01 2025-09-28 0000097210 us-gaap:RetainedEarningsMember 2024-07-01 2024-09-29 0000097210 us-gaap:TransferredOverTimeMember 2025-06-30 2025-09-28 0000097210 us-gaap:AdditionalPaidInCapitalMember 2024-01-01 2024-09-29 0000097210 ter:SemiconductorTestMember 2025-09-28 0000097210 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:ForeignCorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2025-06-30 2025-09-28 0000097210 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:ForeignExchangeForwardMember us-gaap:OtherCurrentAssetsMember 2024-12-31 0000097210 ter:MemoryMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel1Member us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:CommonStockMember 2024-09-29 0000097210 ter:AccumulatedNetUnrealizedLossesOnCashFlowHedgesMember 2023-12-31 0000097210 ter:GroupAnnuityContractMember ter:UsQualifiedPensionPlanMember 2024-07-01 2024-09-29 0000097210 ter:ProductTestMember us-gaap:TransferredOverTimeMember 2025-01-01 2025-09-28 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2025-09-28 0000097210 us-gaap:ForeignExchangeOptionMember us-gaap:NondesignatedMember us-gaap:OtherNonoperatingIncomeExpenseMember 2025-01-01 2025-09-28 0000097210 us-gaap:ForeignCorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:NondesignatedMember us-gaap:ForeignExchangeForwardMember us-gaap:OtherCurrentAssetsMember 2024-12-31 0000097210 srt:AmericasMember ter:ProductTestMember 2024-07-01 2024-09-29 0000097210 ter:SemiconductorTestMember 2024-01-01 2024-12-31 0000097210 ter:ISTMember us-gaap:TransferredOverTimeMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 ter:ForeignCurrencyTranslationAdjustmentsMember 2024-01-01 2024-09-29 0000097210 ter:QuantifiPhotonicsMember us-gaap:CustomerRelationshipsMember 2025-05-31 2025-05-31 0000097210 ter:TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember 2025-01-01 2025-09-28 0000097210 ter:TwoThousandTwentyThreeRepurchaseProgramMember 2025-01-01 2025-09-28 0000097210 ter:MemoryMember us-gaap:EMEAMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:PrepaidExpenseMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:ForeignExchangeOptionMember us-gaap:NondesignatedMember us-gaap:OtherNonoperatingIncomeExpenseMember 2024-07-01 2024-09-29 0000097210 ter:UniversalRobotsMember us-gaap:TransferredOverTimeMember ter:RoboticsMember 2024-07-01 2024-09-29 0000097210 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2025-09-28 0000097210 2024-06-30 0000097210 us-gaap:OperatingSegmentsMember 2024-09-29 0000097210 2025-09-28 0000097210 ter:CorporateAndEliminationsMember 2025-06-30 2025-09-28 0000097210 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 country:SG 2024-01-01 2024-09-29 0000097210 2023-01-01 2023-01-01 0000097210 us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:OperatingSegmentsMember 2025-09-28 0000097210 ter:SemiconductorTestMember 2024-12-31 0000097210 ter:ServiceBasedRestrictedStockUnitsMember ter:NonEmployeeDirectorsMember 2025-01-01 2025-09-28 0000097210 us-gaap:TransferredOverTimeMember ter:MemoryMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:CustomerRelationshipsMember 2025-09-28 0000097210 us-gaap:WarrantMember 2024-07-01 2024-09-29 0000097210 us-gaap:OperatingSegmentsMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 srt:AmericasMember 2024-01-01 2024-09-29 0000097210 us-gaap:BaseRateMember ter:TruistBankMember us-gaap:RevolvingCreditFacilityMember srt:MinimumMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:QuantifiPhotonicsMember 2025-05-31 2025-05-31 0000097210 us-gaap:RestrictedStockUnitsRSUMember srt:DirectorMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CertificatesOfDepositMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 currency:GBP 2025-09-28 0000097210 us-gaap:EMEAMember 2024-07-01 2024-09-29 0000097210 us-gaap:TransferredOverTimeMember ter:SocMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 ter:TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember exch:XNYS 2024-01-01 2024-09-29 0000097210 2024-09-29 0000097210 2025-06-30 2025-09-28 0000097210 us-gaap:OtherCurrentLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:ISTMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:RestrictedStockUnitsRSUMember 2025-06-30 2025-09-28 0000097210 us-gaap:FairValueInputsLevel1Member ter:EquityMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 srt:AmericasMember ter:ISTMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 currency:GBP 2024-12-31 0000097210 us-gaap:OperatingSegmentsMember ter:RoboticsMember 2024-01-01 2024-09-29 0000097210 us-gaap:OperatingSegmentsMember ter:RoboticsMember 2024-09-29 0000097210 us-gaap:NondesignatedMember us-gaap:ForeignExchangeForwardMember us-gaap:OtherNonoperatingIncomeExpenseMember 2025-06-30 2025-09-28 0000097210 srt:AmericasMember ter:UniversalRobotsMember ter:RoboticsMember 2024-07-01 2024-09-29 0000097210 us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SalesMember ter:ForeignExchangeForwardAndOptionContractsMember 2024-01-01 2024-09-29 0000097210 us-gaap:DevelopedTechnologyRightsMember 2025-09-28 0000097210 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SalesMember ter:ForeignExchangeForwardAndOptionContractsMember 2025-06-30 2025-09-28 0000097210 ter:RoboticsMember 2024-01-01 2024-12-31 0000097210 ter:ISTMember us-gaap:TransferredAtPointInTimeMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:DebtMutualFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2024-12-31 0000097210 us-gaap:ForeignPlanMember 2024-01-01 2024-09-29 0000097210 ter:ForeignCurrencyTranslationAdjustmentsMember 2025-09-28 0000097210 us-gaap:RetainedEarningsMember 2024-01-01 2024-09-29 0000097210 ter:UniversalRobotsMember us-gaap:TransferredAtPointInTimeMember ter:RoboticsMember 2025-06-30 2025-09-28 0000097210 ter:UniversalRobotsMember ter:RoboticsMember 2024-01-01 2024-09-29 0000097210 2024-05-31 0000097210 ter:MemoryMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:DebtMutualFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:ForeignPlanMember 2024-07-01 2024-09-29 0000097210 ter:TruistBankMember us-gaap:RevolvingCreditFacilityMember ter:LondonInterbankOfferedRateMember srt:MinimumMember 2025-01-01 2025-09-28 0000097210 ter:ServiceBasedRestrictedStockUnitsMember srt:ExecutiveOfficerMember 2025-01-01 2025-09-28 0000097210 us-gaap:TransferredAtPointInTimeMember ter:MemoryMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel1Member us-gaap:CashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:SocMember us-gaap:EMEAMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:EMEAMember 2024-01-01 2024-09-29 0000097210 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2024-12-31 0000097210 us-gaap:ForeignExchangeOptionMember 2025-06-30 2025-09-28 0000097210 ter:AutomatedTestEquipmentTechnologyAndAssociatedDevelopmentTeamMember 2024-01-01 2024-12-31 0000097210 us-gaap:EmployeeStockOptionMember 2025-06-30 2025-09-28 0000097210 us-gaap:RestrictedStockUnitsRSUMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:ForeignCorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:USTreasurySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:EmployeeStockOptionMember 2024-01-01 2024-09-29 0000097210 ter:TechnoprobeMember 2024-01-01 2024-09-29 0000097210 ter:ISTMember us-gaap:EMEAMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 currency:SGD 2024-12-31 0000097210 2025-05-31 0000097210 ter:ProductTestMember us-gaap:OperatingSegmentsMember 2025-09-28 0000097210 ter:EquityMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 srt:AmericasMember ter:MemoryMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 ter:UniversalRobotsMember ter:RoboticsMember srt:AsiaPacificMember 2024-01-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CertificatesOfDepositMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 srt:AmericasMember ter:ProductTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:OtherCurrentLiabilitiesMember us-gaap:NondesignatedMember us-gaap:ForeignExchangeForwardMember 2025-09-28 0000097210 us-gaap:RetainedEarningsMember 2025-01-01 2025-09-28 0000097210 us-gaap:TransferredAtPointInTimeMember ter:MemoryMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 ter:RoboticsMember 2024-12-31 0000097210 ter:AutomatedTestEquipmentTechnologyAndAssociatedDevelopmentTeamMember 2025-01-31 0000097210 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:ShortTermContractWithCustomerMember 2025-01-01 2025-09-28 0000097210 us-gaap:ForeignExchangeOptionMember 2024-07-01 2024-09-29 0000097210 ter:MemoryMember us-gaap:EMEAMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:FairValueInputsLevel1Member us-gaap:CashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:CreditAgreementMember 2025-09-04 0000097210 ter:QuantifiMember ter:SemiconductorTestMember 2024-01-01 2024-12-31 0000097210 ter:SocMember srt:AsiaPacificMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:ProfitBeforeIncomeAndTaxPerformanceBasedRestrictedStockUnitsMember 2024-01-01 2024-09-29 0000097210 ter:MemoryMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 currency:TWD 2025-09-28 0000097210 us-gaap:OperatingSegmentsMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 ter:CorporateAndEliminationsMember 2024-07-01 2024-09-29 0000097210 us-gaap:CustomerRelationshipsMember 2024-01-01 2024-12-31 0000097210 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 srt:AmericasMember ter:SocMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:EMEAMember ter:MemoryMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:ProductTestMember us-gaap:EMEAMember 2024-07-01 2024-09-29 0000097210 srt:MinimumMember ter:EmployeeStockPurchasePlanMember 2025-01-01 2025-09-28 0000097210 us-gaap:TransferredAtPointInTimeMember ter:SocMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:AccumulatedNetUnrealizedLossesOnCashFlowHedgesMember 2025-01-01 2025-09-28 0000097210 ter:QuantifiPhotonicsMember us-gaap:DevelopedTechnologyRightsMember 2025-05-31 2025-05-31 0000097210 us-gaap:TransferredAtPointInTimeMember ter:MemoryMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:ForwardContractsMember 2024-04-12 0000097210 2025-01-01 2025-09-28 0000097210 ter:EmployeesMember ter:ServiceBasedRestrictedStockUnitsMember 2024-01-01 2024-09-29 0000097210 us-gaap:RetainedEarningsMember 2025-06-29 0000097210 us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:ProductTestMember us-gaap:OperatingSegmentsMember 2024-01-01 2024-09-29 0000097210 ter:PrepaidExpenseMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:ISTMember us-gaap:EMEAMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:AdditionalPaidInCapitalMember 2023-12-31 0000097210 2020-05-01 0000097210 ter:ProductTestMember 2024-12-31 0000097210 ter:RoboticsMember 2025-06-30 2025-09-28 0000097210 currency:CNY 2024-12-31 0000097210 ter:ISTMember us-gaap:TransferredOverTimeMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:SocMember srt:AsiaPacificMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 ter:DebtMutualFundsMember 2024-12-31 0000097210 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2025-09-28 0000097210 ter:ProductTestMember us-gaap:TransferredOverTimeMember 2024-01-01 2024-09-29 0000097210 us-gaap:LongTermContractWithCustomerMember srt:MinimumMember 2025-01-01 2025-09-28 0000097210 us-gaap:CertificatesOfDepositMember 2025-09-28 0000097210 us-gaap:ForeignExchangeContractMember 2024-01-01 2024-12-31 0000097210 currency:JPY 2025-09-28 0000097210 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:ForeignExchangeForwardMember us-gaap:OtherCurrentAssetsMember 2025-09-28 0000097210 ter:NonUSSubsidiariesMember 2024-09-29 0000097210 us-gaap:ForeignCorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:RetainedEarningsMember 2023-12-31 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:ForeignCorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:CertificatesOfDepositMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:OtherCurrentLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:MemoryMember srt:AsiaPacificMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:ForeignExchangeOptionMember 2024-01-01 2024-09-29 0000097210 ter:ISTMember us-gaap:TransferredAtPointInTimeMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:FairValueMeasurementsRecurringMember ter:LongTermMarketableSecuritiesMember 2024-12-31 0000097210 us-gaap:FairValueMeasurementsRecurringMember ter:LongTermMarketableSecuritiesMember 2025-09-28 0000097210 us-gaap:ForeignCorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:UniversalRobotsMember us-gaap:TransferredAtPointInTimeMember ter:RoboticsMember 2024-01-01 2024-09-29 0000097210 us-gaap:CollateralPledgedMember 2025-01-01 2025-09-28 0000097210 srt:AmericasMember ter:UniversalRobotsMember ter:RoboticsMember 2024-01-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:TransferredAtPointInTimeMember ter:SocMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:ForeignCorporateDebtSecuritiesMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member ter:EquityMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:CommonStockMember 2025-09-28 0000097210 us-gaap:CorporateDebtSecuritiesMember 2024-12-31 0000097210 ter:TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember us-gaap:ShareBasedCompensationAwardTrancheOneMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:ISTMember srt:AsiaPacificMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member ter:DebtMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:CashMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:EMEAMember 2025-06-30 2025-09-28 0000097210 us-gaap:AdditionalPaidInCapitalMember 2024-09-29 0000097210 ter:EmployeesMember ter:ServiceBasedRestrictedStockUnitsMember 2025-01-01 2025-09-28 0000097210 srt:MaximumMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel1Member ter:MarketableSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:GroupAnnuityContractMember ter:UsQualifiedPensionPlanMember 2024-09-29 0000097210 us-gaap:CommonStockMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member ter:EquityMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:ISTMember srt:AsiaPacificMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:ProductMember 2025-06-30 2025-09-28 0000097210 srt:AmericasMember ter:MemoryMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember ter:EquityMutualFundsMember 2024-12-31 0000097210 ter:ProductTestMember 2025-01-01 2025-09-28 0000097210 srt:AsiaPacificMember 2024-07-01 2024-09-29 0000097210 ter:QuantifiPhotonicsMember 2025-01-01 2025-09-28 0000097210 us-gaap:CertificatesOfDepositMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 srt:AmericasMember ter:SocMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CertificatesOfDepositMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 srt:AsiaPacificMember 2024-01-01 2024-09-29 0000097210 us-gaap:ShortTermContractWithCustomerMember 2025-09-28 0000097210 ter:AccumulatedNetUnrealizedLossesOnCashFlowHedgesMember 2024-01-01 2024-09-29 0000097210 ter:PrepaidExpenseMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:RetainedEarningsMember 2024-06-30 0000097210 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2025-09-28 0000097210 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2024-01-01 2024-09-29 0000097210 us-gaap:CommonStockMember 2024-06-30 0000097210 srt:AmericasMember 2025-06-30 2025-09-28 0000097210 ter:SocMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:CommonStockMember 2024-01-01 2024-09-29 0000097210 us-gaap:USTreasurySecuritiesMember 2024-12-31 0000097210 ter:AutomatedTestEquipmentTechnologyAndAssociatedDevelopmentTeamMember ter:RoboticsMember 2024-01-01 2024-12-31 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-07-01 2024-09-29 0000097210 us-gaap:USTreasurySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:LongMember us-gaap:CashFlowHedgingMember us-gaap:ForeignExchangeForwardMember currency:JPY 2024-12-31 0000097210 us-gaap:FairValueInputsLevel2Member ter:DebtMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 srt:AmericasMember ter:SocMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 ter:ProductTestMember srt:AsiaPacificMember 2024-07-01 2024-09-29 0000097210 currency:TWD 2024-12-31 0000097210 ter:MarketableSecuritiesMember 2024-12-31 0000097210 ter:UniversalRobotsMember ter:RoboticsMember us-gaap:EMEAMember 2025-06-30 2025-09-28 0000097210 ter:SocMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 2022-10-05 0000097210 us-gaap:TransferredOverTimeMember ter:MemoryMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:NondesignatedMember us-gaap:ForeignExchangeForwardMember us-gaap:OtherNonoperatingIncomeExpenseMember 2024-07-01 2024-09-29 0000097210 ter:AutomatedTestEquipmentTechnologyAndAssociatedDevelopmentTeamMember ter:SemiconductorTestMember 2024-01-01 2024-12-31 0000097210 srt:AmericasMember ter:ISTMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 currency:SGD 2025-09-28 0000097210 ter:UniversalRobotsMember ter:RoboticsMember srt:AsiaPacificMember 2025-06-30 2025-09-28 0000097210 2024-07-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member ter:MarketableSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:OperatingSegmentsMember 2024-01-01 2024-09-29 0000097210 ter:ProductTestMember srt:AsiaPacificMember 2025-06-30 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember ter:LongTermMarketableSecuritiesMember 2024-12-31 0000097210 ter:MemoryMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:TransferredAtPointInTimeMember ter:MemoryMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 ter:SocMember us-gaap:EMEAMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:TransferredAtPointInTimeMember 2024-07-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:TruistBankMember us-gaap:BaseRateMember us-gaap:RevolvingCreditFacilityMember srt:MaximumMember 2025-01-01 2025-09-28 0000097210 srt:AmericasMember ter:ISTMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember ter:LongTermMarketableSecuritiesMember 2025-09-28 0000097210 ter:QuantifiMember 2024-01-01 2024-12-31 0000097210 ter:TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CashMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:UnitedStatesSupplementalExecutiveDefinedBenefitPensionPlanMember 2025-01-01 2025-09-28 0000097210 us-gaap:EMEAMember ter:MemoryMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 ter:ProfitBeforeIncomeAndTaxPerformanceBasedRestrictedStockUnitsMember 2025-01-01 2025-09-28 0000097210 us-gaap:ForeignPlanMember 2025-01-01 2025-09-28 0000097210 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2025-01-01 2025-06-29 0000097210 ter:UniversalRobotsMember ter:RoboticsMember srt:AsiaPacificMember 2025-01-01 2025-09-28 0000097210 us-gaap:CashMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:SocMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:AccumulatedNetUnrealizedLossesOnCashFlowHedgesMember 2024-09-29 0000097210 us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember 2025-09-28 0000097210 2023-01-31 0000097210 us-gaap:OperatingSegmentsMember 2025-06-30 2025-09-28 0000097210 2024-05-27 0000097210 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:QuantifiMember ter:RoboticsMember 2024-01-01 2024-12-31 0000097210 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2024-07-01 2024-09-29 0000097210 currency:JPY 2024-12-31 0000097210 ter:UnitedStatesSupplementalExecutiveDefinedBenefitPensionPlanMember 2024-01-01 2024-09-29 0000097210 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2025-01-01 2025-09-28 0000097210 ter:DebtMutualFundsMember 2025-09-28 0000097210 us-gaap:AdditionalPaidInCapitalMember 2024-06-30 0000097210 us-gaap:CashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2024-07-01 2024-09-29 0000097210 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2025-06-30 2025-09-28 0000097210 ter:PrepaidExpenseMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:RestrictedStockUnitsRSUMember ter:EmployeesMember 2025-01-01 2025-09-28 0000097210 ter:CreditAgreementMember 2025-09-19 0000097210 us-gaap:TransferredOverTimeMember ter:SocMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel1Member us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:TrademarksAndTradeNamesMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:ForeignCorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:OtherCurrentLiabilitiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:MarketableSecuritiesMember 2025-09-28 0000097210 2025-01-01 2025-06-29 0000097210 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2024-09-29 0000097210 us-gaap:CashFlowHedgingMember 2024-01-01 2024-12-31 0000097210 us-gaap:EmployeeStockOptionMember us-gaap:MeasurementInputExpectedDividendPaymentMember 2024-01-01 2024-09-29 0000097210 ter:ForeignCurrencyTranslationAdjustmentsMember 2025-01-01 2025-09-28 0000097210 ter:UniversalRobotsMember us-gaap:TransferredAtPointInTimeMember ter:RoboticsMember 2025-01-01 2025-09-28 0000097210 ter:ProductTestMember us-gaap:TransferredAtPointInTimeMember 2024-07-01 2024-09-29 0000097210 ter:ISTMember us-gaap:TransferredAtPointInTimeMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 ter:ProductTestMember srt:AsiaPacificMember 2024-01-01 2024-09-29 0000097210 srt:AsiaPacificMember 2025-06-30 2025-09-28 0000097210 us-gaap:CommonStockMember 2024-07-01 2024-09-29 0000097210 us-gaap:TrademarksAndTradeNamesMember 2024-01-01 2024-12-31 0000097210 us-gaap:DevelopedTechnologyRightsMember 2024-01-01 2024-12-31 0000097210 us-gaap:ForeignExchangeOptionMember 2025-01-01 2025-09-28 0000097210 us-gaap:CertificatesOfDepositMember 2024-12-31 0000097210 us-gaap:FairValueInputsLevel3Member ter:DebtMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:EmployeeStockOptionMember srt:MaximumMember 2025-01-01 2025-09-28 0000097210 us-gaap:CertificatesOfDepositMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:TransferredOverTimeMember 2024-07-01 2024-09-29 0000097210 ter:TruistBankMember us-gaap:RevolvingCreditFacilityMember srt:MinimumMember 2025-01-01 2025-09-28 0000097210 srt:AmericasMember ter:MemoryMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 currency:KRW 2025-09-28 0000097210 ter:RoboticsMember 2025-09-28 0000097210 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2024-12-31 0000097210 ter:ISTMember srt:AsiaPacificMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:AccumulatedNetUnrealizedLossesOnCashFlowHedgesMember 2025-09-28 0000097210 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2024-01-01 2024-09-29 0000097210 ter:CreditAgreementMember us-gaap:SubsequentEventMember 2025-10-30 0000097210 us-gaap:OperatingSegmentsMember 2024-07-01 2024-09-29 0000097210 ter:TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember exch:XNYS 2025-01-01 2025-09-28 0000097210 ter:OnePointTwoFivePercentConvertibleSeniorUnsecuredNotesMember 2025-01-01 2025-09-28 0000097210 ter:ProductTestMember us-gaap:TransferredOverTimeMember 2025-06-30 2025-09-28 0000097210 us-gaap:ShareBasedCompensationAwardTrancheTwoMember ter:TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember 2025-01-01 2025-09-28 0000097210 us-gaap:ServiceMember 2024-01-01 2024-09-29 0000097210 us-gaap:OperatingSegmentsMember ter:RoboticsMember 2024-07-01 2024-09-29 0000097210 ter:ISTMember us-gaap:TransferredOverTimeMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:CallOptionMember 2024-01-01 2024-09-29 0000097210 us-gaap:OperatingSegmentsMember ter:RoboticsMember 2025-06-30 2025-09-28 0000097210 ter:AutomatedTestEquipmentTechnologyAndAssociatedDevelopmentTeamMember 2025-01-31 2025-01-31 0000097210 us-gaap:ForeignCorporateDebtSecuritiesMember 2024-12-31 0000097210 us-gaap:CorporateDebtSecuritiesMember 2025-09-28 0000097210 us-gaap:OtherCurrentLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member ter:DebtMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:TruistBankMember us-gaap:RevolvingCreditFacilityMember ter:LondonInterbankOfferedRateMember srt:MaximumMember 2025-01-01 2025-09-28 0000097210 us-gaap:RestrictedStockUnitsRSUMember 2024-07-01 2024-09-29 0000097210 ter:UniversalRobotsMember us-gaap:TransferredOverTimeMember ter:RoboticsMember 2025-06-30 2025-09-28 0000097210 us-gaap:AdditionalPaidInCapitalMember 2025-06-29 0000097210 us-gaap:CashFlowHedgingMember us-gaap:ForeignExchangeForwardMember 2025-09-28 0000097210 us-gaap:AdditionalPaidInCapitalMember 2024-07-01 2024-09-29 0000097210 us-gaap:RetainedEarningsMember 2024-12-31 0000097210 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SalesMember ter:ForeignExchangeForwardAndOptionContractsMember 2025-01-01 2025-09-28 0000097210 us-gaap:TrademarksAndTradeNamesMember 2025-01-01 2025-09-28 0000097210 ter:ProductTestMember us-gaap:EMEAMember 2025-01-01 2025-09-28 0000097210 us-gaap:CommonStockMember 2025-06-29 0000097210 srt:AmericasMember ter:ProductTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:USTreasurySecuritiesMember 2025-09-28 0000097210 ter:ISTMember us-gaap:EMEAMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:CustomerRelationshipsMember 2025-01-01 2025-09-28 0000097210 ter:ISTMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:LongMember us-gaap:CashFlowHedgingMember us-gaap:ForeignExchangeForwardMember currency:JPY 2025-09-28 0000097210 us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SalesMember ter:ForeignExchangeForwardAndOptionContractsMember 2024-07-01 2024-09-29 0000097210 ter:OnePointTwoFivePercentConvertibleSeniorUnsecuredNotesDueDecemberFifteenTwoThousandTwentyThreeMember 2016-12-12 0000097210 srt:AmericasMember ter:UniversalRobotsMember ter:RoboticsMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember ter:LongTermMarketableSecuritiesMember 2025-09-28 0000097210 us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:SocMember us-gaap:EMEAMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:RetainedEarningsMember 2025-09-28 0000097210 ter:UniversalRobotsMember ter:RoboticsMember us-gaap:EMEAMember 2024-01-01 2024-09-29 0000097210 us-gaap:ForeignExchangeOptionMember us-gaap:NondesignatedMember us-gaap:OtherNonoperatingIncomeExpenseMember 2025-06-30 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:OtherCurrentLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:PrepaidExpenseMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:WarrantMember 2024-01-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:OtherCurrentLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CashMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:OnePointTwoFivePercentConvertibleSeniorUnsecuredNotesMember srt:MaximumMember 2025-01-01 2025-09-28 0000097210 currency:DKK 2024-12-31 0000097210 us-gaap:TransferredOverTimeMember ter:SocMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-09-29 0000097210 ter:MemoryMember srt:AsiaPacificMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:ForwardContractsMember 2024-04-12 2024-04-12 0000097210 us-gaap:DevelopedTechnologyRightsMember 2025-01-01 2025-09-28 0000097210 us-gaap:EmployeeStockOptionMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member ter:MarketableSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:ProductTestMember us-gaap:TransferredAtPointInTimeMember 2025-06-30 2025-09-28 0000097210 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember ter:EquityMutualFundsMember 2025-09-28 0000097210 srt:AmericasMember ter:SocMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CashMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:OperatingSegmentsMember ter:RoboticsMember 2025-01-01 2025-09-28 0000097210 ter:UniversalRobotsMember ter:RoboticsMember us-gaap:EMEAMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember ter:LongTermMarketableSecuritiesMember 2025-09-28 0000097210 currency:EUR 2024-12-31 0000097210 ter:DebtMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:QuantifiPhotonicsMember 2025-05-31 0000097210 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2025-01-01 2025-09-28 0000097210 us-gaap:NondesignatedMember us-gaap:ForeignExchangeForwardMember us-gaap:OtherCurrentAssetsMember 2025-09-28 0000097210 ter:ServiceBasedRestrictedStockUnitsMember srt:ExecutiveOfficerMember 2024-01-01 2024-09-29 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2025-01-01 2025-06-29 0000097210 ter:ProductTestMember us-gaap:TransferredAtPointInTimeMember 2025-01-01 2025-09-28 0000097210 ter:ISTMember us-gaap:EMEAMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 ter:ProductTestMember us-gaap:EMEAMember 2024-01-01 2024-09-29 0000097210 ter:TruistBankMember us-gaap:RevolvingCreditFacilityMember srt:MaximumMember 2025-01-01 2025-09-28 0000097210 ter:UniversalRobotsMember us-gaap:TransferredAtPointInTimeMember ter:RoboticsMember 2024-07-01 2024-09-29 0000097210 ter:ISTMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-01-01 2024-09-29 0000097210 country:SG 2025-01-01 2025-09-28 0000097210 us-gaap:TransferredOverTimeMember ter:MemoryMember ter:SemiconductorTestMember 2025-06-30 2025-09-28 0000097210 us-gaap:TransferredOverTimeMember ter:MemoryMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2023-12-31 0000097210 ter:MemoryMember srt:AsiaPacificMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 ter:DeviceInterfaceSolutionsMember 2025-01-01 2025-09-28 0000097210 ter:MarketableSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 ter:CorporateAndEliminationsMember 2025-09-28 0000097210 ter:UniversalRobotsMember ter:RoboticsMember 2025-01-01 2025-09-28 0000097210 srt:AsiaPacificMember ter:MemoryMember ter:SemiconductorTestMember 2025-01-01 2025-09-28 0000097210 ter:MarketableSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:ProductTestMember srt:AsiaPacificMember 2025-01-01 2025-09-28 0000097210 us-gaap:ProductMember 2025-01-01 2025-09-28 0000097210 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2024-12-31 0000097210 us-gaap:ForeignExchangeContractMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:UniversalRobotsMember us-gaap:TransferredOverTimeMember ter:RoboticsMember 2024-01-01 2024-09-29 0000097210 ter:ProductTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel1Member ter:MarketableSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2023-12-31 0000097210 srt:AmericasMember 2025-01-01 2025-09-28 0000097210 2024-12-31 0000097210 us-gaap:CashMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:ProductMember 2024-01-01 2024-09-29 0000097210 2024-01-01 2024-09-29 0000097210 ter:NonUSSubsidiariesMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember ter:LongTermMarketableSecuritiesMember 2024-12-31 0000097210 ter:CreditAgreementMember 2024-05-16 0000097210 ter:ProductTestMember us-gaap:OperatingSegmentsMember 2024-07-01 2024-09-29 0000097210 us-gaap:DevelopedTechnologyRightsMember 2024-12-31 0000097210 ter:ProductTestMember us-gaap:TransferredAtPointInTimeMember 2024-01-01 2024-09-29 0000097210 ter:DevelopedTechnologyAndCustomerRelationshipsMember ter:AutomatedTestEquipmentTechnologyAndAssociatedDevelopmentTeamMember 2025-01-31 0000097210 ter:UniversalRobotsMember ter:RoboticsMember us-gaap:EMEAMember 2024-07-01 2024-09-29 0000097210 us-gaap:CashFlowHedgingMember us-gaap:ForeignExchangeForwardMember 2024-12-31 0000097210 us-gaap:TransferredOverTimeMember 2024-01-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CertificatesOfDepositMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2023-12-31 0000097210 us-gaap:AdditionalPaidInCapitalMember 2025-01-01 2025-09-28 0000097210 srt:AsiaPacificMember 2025-01-01 2025-09-28 0000097210 srt:ExecutiveOfficerMember ter:ServiceBasedStockOptionsMember 2025-01-01 2025-09-28 0000097210 us-gaap:EMEAMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:ServiceMember 2024-07-01 2024-09-29 0000097210 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2025-09-28 0000097210 us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember 2024-12-31 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-12-31 0000097210 ter:TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember 2024-01-01 2024-09-29 0000097210 us-gaap:CommonStockMember 2023-12-31 0000097210 ter:DebtMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:SocMember srt:AsiaPacificMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 ter:TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember us-gaap:MeasurementInputExpectedDividendPaymentMember 2025-01-01 2025-09-28 0000097210 2025-10-27 0000097210 us-gaap:AdditionalPaidInCapitalMember 2024-12-31 0000097210 ter:UniversalRobotsMember us-gaap:TransferredOverTimeMember ter:RoboticsMember 2025-01-01 2025-09-28 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:CashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:EmployeeStockOptionMember 2024-07-01 2024-09-29 0000097210 ter:LongTermMarketableSecuritiesMember 2025-09-28 0000097210 2024-01-01 2024-12-31 0000097210 us-gaap:ServiceMember 2025-06-30 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member ter:PrepaidExpenseMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 2025-01-31 0000097210 ter:ProductTestMember 2025-09-28 0000097210 us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CashEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:EmployeeStockOptionMember us-gaap:MeasurementInputExpectedDividendPaymentMember 2025-01-01 2025-09-28 0000097210 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2025-06-29 0000097210 us-gaap:OperatingSegmentsMember ter:SemiconductorTestMember 2025-09-28 0000097210 ter:OnePointTwoFivePercentConvertibleSeniorUnsecuredNotesMember srt:MinimumMember 2025-01-01 2025-09-28 0000097210 ter:SocMember srt:AsiaPacificMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 us-gaap:CommonStockMember 2025-06-30 2025-09-28 0000097210 us-gaap:OtherCurrentLiabilitiesMember us-gaap:NondesignatedMember us-gaap:ForeignExchangeForwardMember 2024-12-31 0000097210 us-gaap:OtherCurrentLiabilitiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:DeviceInterfaceSolutionsMember 2024-05-27 2024-05-27 0000097210 us-gaap:AdditionalPaidInCapitalMember 2025-09-28 0000097210 us-gaap:TransferredOverTimeMember ter:SocMember ter:SemiconductorTestMember 2024-07-01 2024-09-29 0000097210 ter:SocMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:FairValueInputsLevel2Member us-gaap:OtherCurrentLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:TransferredAtPointInTimeMember ter:SocMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:FairValueInputsLevel2Member ter:EquityMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2025-09-28 0000097210 ter:EquityMutualFundsMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:TransferredOverTimeMember 2025-01-01 2025-09-28 0000097210 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2024-09-29 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:FairValueInputsLevel3Member us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 currency:DKK 2025-09-28 0000097210 us-gaap:OperatingSegmentsMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 us-gaap:RetainedEarningsMember 2025-06-30 2025-09-28 0000097210 ter:ISTMember srt:AsiaPacificMember ter:SemiconductorTestMember 2024-01-01 2024-09-29 0000097210 srt:AmericasMember ter:UniversalRobotsMember ter:RoboticsMember 2025-06-30 2025-09-28 0000097210 us-gaap:ForeignCorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:EmployeeStockOptionMember 2024-01-01 2024-09-29 0000097210 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2025-06-30 2025-09-28 0000097210 ter:UniversalRobotsMember ter:RoboticsMember 2025-06-30 2025-09-28 0000097210 ter:QuantifiPhotonicsMember us-gaap:TrademarksAndTradeNamesMember 2025-05-31 2025-05-31 0000097210 us-gaap:FairValueInputsLevel3Member ter:MarketableSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2024-12-31 0000097210 us-gaap:AdditionalPaidInCapitalMember 2025-06-30 2025-09-28 0000097210 ter:TwoThousandTwentyThreeRepurchaseProgramMember 2025-09-28 0000097210 us-gaap:OperatingSegmentsMember 2025-01-01 2025-09-28 iso4217:EUR xbrli:pure ter:HeadCount xbrli:shares ter:Segment iso4217:CNY ter:RetireeParticipants iso4217:USD xbrli:shares iso4217:USD

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 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 28, 2025

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 No. 001-06462

TERADYNE, INC.

(Exact name of registrant as specified in its charter)

Massachusetts

04-2272148

(State or Other Jurisdiction of

Incorporation or Organization)

(I.R.S. Employer

Identification No.)

600 Riverpark Drive , North Reading ,

Massachusetts

01864

(Address of Principal Executive Offices)

(Zip Code)

978 - 370-2700

(Registrant’s Telephone Number, Including Area Code)

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 $0.125

per share

TER

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 the 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 (232.405 of this chapter) 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, 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 (check one):

Large accelerated filer

Accelerated filer

Non-accelerated filer

Emerging growth company

Smaller reporting 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

The number of shares outstanding of the registrant’s only class of Common Stock as of October 27, 2025, was 156,608,303 sh ares.



PART I

Item 1: Financial Statements

TERADYNE, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

September 28,
2025

December 31,
2024

(in thousands,
except per share amount)

ASSETS

Current assets:

Cash and cash equivalents

$

272,700

$

553,354

Marketable securities

25,017

46,312

Accounts receivable, less allowance for credit losses of $ 1,886 and $ 2,111 at September 28, 2025
and December 31, 2024, respectively

593,800

471,426

Inventories, net

366,752

298,492

Prepayments

469,240

429,086

Other current assets

22,649

17,727

Total current assets

1,750,158

1,816,397

Property, plant and equipment, net

569,939

508,171

Operating lease right-of-use assets, net

62,442

70,185

Marketable securities

129,658

124,121

Deferred tax assets

253,455

222,438

Retirement plans assets

12,702

11,994

Equity method investment

538,001

494,494

Other assets

73,118

49,620

Acquired intangible assets, net

54,708

15,927

Goodwill

519,550

395,367

Total assets

$

3,963,731

$

3,708,714

LIABILITIES

Current liabilities:

Accounts payable

$

227,850

$

134,792

Accrued employees’ compensation and withholdings

203,850

204,991

Deferred revenue and customer advances

133,050

107,710

Other accrued liabilities

138,717

90,777

Operating lease liabilities

19,026

18,699

Short-term debt

200,000

Income taxes payable

72,496

67,610

Total current liabilities

994,989

624,579

Retirement plans liabilities

142,680

133,338

Long-term deferred revenue and customer advances

43,887

40,505

Deferred tax liabilities

6,890

1,038

Long-term other accrued liabilities

8,285

7,442

Long-term operating lease liabilities

49,725

57,922

Long-term incomes taxes payable

24,596

Total liabilities

1,246,456

889,420

Commitments and contingencies (Note S)

SHAREHOLDERS’ EQUITY

Common stock, $ 0.125 par value, 1,000,000 shares authorized; 157,245 and 161,722 shares issued
and outstanding at September 28, 2025, and December 31, 2024, respectively

19,656

20,215

Additional paid-in capital

1,973,415

1,909,538

Accumulated other comprehensive loss (gain)

37,422

( 81,220

)

Retained earnings

686,782

970,761

Total shareholders’ equity

2,717,275

2,819,294

Total liabilities and shareholders’ equity

$

3,963,731

$

3,708,714

The accompanying notes, together with the Notes to Consolidated Financial Statements included in Teradyne’s Annual Report on Form 10-K for the year ended December 31, 2024, are an integral part of the condensed consolidated financial statements.

1


TERADYNE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

For the Three Months
Ended

For the Nine Months
Ended

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

(in thousands, except per share amount)

(in thousands, except per share amount)

Revenues:

Products

$

632,104

$

612,871

$

1,716,718

$

1,668,181

Services

137,106

124,427

389,969

398,815

Total revenues

769,210

737,298

2,106,687

2,066,996

Cost of revenues:

Cost of products

270,634

253,129

727,198

704,129

Cost of services

49,270

47,655

141,834

161,228

Total cost of revenues (exclusive of acquired intangible
assets amortization shown separately below)

319,904

300,784

869,032

865,357

Gross profit

449,306

436,514

1,237,655

1,201,639

Operating expenses:

Selling and administrative

169,144

157,649

484,182

461,307

Engineering and development

124,760

117,474

361,331

332,489

Acquired intangible assets amortization

3,514

4,748

11,820

14,108

Restructuring and other

6,585

4,578

23,472

11,018

Gain on sale of business

( 57,486

)

Total operating expenses

304,003

284,449

880,805

761,436

Income from operations

145,303

152,065

356,850

440,203

Non-operating (income) expense:

Interest income

( 3,191

)

( 5,076

)

( 12,618

)

( 19,658

)

Interest expense

1,309

808

2,909

2,998

Other (income) expense, net

( 915

)

( 2,651

)

2,875

5,574

Income before income taxes and equity in net earnings of affiliate

148,100

158,984

363,684

451,289

Income tax provision

23,344

12,260

50,148

54,095

Income before equity in net earnings of affiliate

124,756

146,724

313,536

397,194

Equity in net earnings of affiliate

( 5,198

)

( 1,075

)

( 16,709

)

( 1,075

)

Net income

$

119,558

$

145,649

$

296,827

$

396,119

Net income per common share:

Basic

$

0.75

$

0.89

$

1.85

$

2.51

Diluted

$

0.75

$

0.89

$

1.85

$

2.42

Weighted average common shares—basic

158,595

163,002

160,021

157,951

Weighted average common shares—diluted

159,097

164,253

160,409

163,357

The accompanying notes, together with the Notes to Consolidated Financial Statements included in Teradyne’s Annual Report on Form 10-K for the year ended December 31, 2024, are an integral part of the condensed consolidated financial statements.

2


TERADYNE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

For the Three Months
Ended

For the Nine Months
Ended

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

(in thousands)

(in thousands)

Net income

$

119,558

$

145,649

$

296,827

$

396,119

Other comprehensive income (loss), net of tax:

Foreign currency translation adjustment, net of tax of $ 0 , $ 0 , $ 0 , and
$
0 , respectively

( 4,351

)

37,838

117,966

22,751

Available-for-sale marketable securities:

Unrealized (losses) gains on marketable securities arising during
period, net of tax of $
201 , $ 609 , $ 316 , and $ 205 , respectively

739

2,507

1,324

885

Less: Reclassification adjustment for (gains) losses included in net income, net of tax of $ 0 ,
$(
2 ), $ 27 , $ 24 , respectively

( 7

)

89

86

739

2,500

1,413

971

Cash flow hedges:

Unrealized (losses) gains arising during period, net of tax of $ 0 , $( 73 ), $( 109 ), and $ 285 , respectively

( 260

)

( 381

)

1,014

Less: Reclassification adjustment for losses (gains) included in
net income, net of tax of $
0 , $ 0 , $( 100 ), and $( 500 ), respectively

( 350

)

( 1,780

)

( 260

)

( 731

)

( 766

)

Defined benefit post-retirement plan:

Amortization of prior service credit, net of tax of $ 0 , $ 0 , $( 1 ), and
$(
1 ), respectively

( 2

)

( 2

)

( 6

)

( 6

)

Other comprehensive income (loss)

( 3,614

)

40,076

118,642

22,950

Comprehensive income

$

115,944

$

185,725

$

415,469

$

419,069

The accompanying notes, together with the Notes to Consolidated Financial Statements included in Teradyne’s Annual Report on Form 10-K for the year ended December 31, 2024, are an integral part of the condensed consolidated financial statements.

3


TERADYNE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(Unaudited)

Shareholders' Equity

Common
Stock
Shares

Common
Stock
Par Value

Additional
Paid-in
Capital

Accumulated
Other
Comprehensive
Income (Loss)

Retained
Earnings

Total
Shareholders’
Equity

(in thousands)

For the Three Months Ended September 28, 2025

Balance, June 29, 2025

159,210

$

19,901

$

1,941,501

$

41,036

$

834,863

$

2,837,301

Net issuance of common stock under stock-based plans

206

26

14,958

14,984

Stock-based compensation expense

16,956

16,956

Repurchase of common stock

( 2,171

)

( 271

)

( 248,640

)

( 248,911

)

Cash dividends ($ 0.12 per share)

( 18,999

)

( 18,999

)

Net income

119,558

119,558

Other comprehensive income (loss)

( 3,614

)

( 3,614

)

Balance, September 28, 2025

157,245

$

19,656

$

1,973,415

$

37,422

$

686,782

$

2,717,275

For the Three Months Ended September 29, 2024

Balance, June 30, 2024

161,802

$

20,225

$

1,865,351

$

( 44,104

)

$

889,340

$

2,730,812

Net issuance of common stock under stock-based plans

130

17

14,966

14,983

Stock-based compensation expense

15,999

15,999

Warrant exercises

1,223

153

( 155

)

( 2

)

Repurchase of common stock

( 196

)

( 25

)

( 25,376

)

( 25,401

)

Cash dividends ($ 0.12 per share)

( 19,574

)

( 19,574

)

Net income

145,649

145,649

Other comprehensive income (loss)

40,076

40,076

Balance, September 29, 2024

162,959

$

20,370

$

1,896,161

$

( 4,028

)

$

990,039

$

2,902,542

Shareholders' Equity

Common
Stock
Shares

Common
Stock
Par Value

Additional
Paid-in
Capital

Accumulated
Other
Comprehensive
Income (Loss)

Retained
Earnings

Total
Shareholders’
Equity

(in thousands)

For the Nine Months Ended September 28, 2025

Balance, December 31, 2024

161,722

$

20,215

$

1,909,538

$

( 81,220

)

$

970,761

$

2,819,294

Net issuance of common stock under stock-based plans

655

82

14,741

14,823

Stock-based compensation expense

49,136

49,136

Repurchase of common stock

( 5,132

)

( 641

)

( 523,208

)

( 523,849

)

Cash dividends ($ 0.36 per share)

( 57,598

)

( 57,598

)

Net income

296,827

296,827

Other comprehensive income (loss)

118,642

118,642

Balance, September 28, 2025

157,245

$

19,656

$

1,973,415

$

37,422

$

686,782

$

2,717,275

For the Nine Months Ended September 29, 2024

Balance, December 31, 2023

152,698

$

19,087

$

1,827,274

$

( 26,978

)

$

706,514

$

2,525,897

Net issuance of common stock under stock-based plans

720

91

23,340

23,431

Stock-based compensation expense

46,817

46,817

Warrant exercises

10,036

1,254

( 1,270

)

( 16

)

Repurchase of common stock

( 495

)

( 62

)

( 55,630

)

( 55,692

)

Cash dividends ($ 0.36 per share)

( 56,964

)

( 56,964

)

Net income

396,119

396,119

Other comprehensive income (loss)

22,950

22,950

Balance, September 29, 2024

162,959

$

20,370

$

1,896,161

$

( 4,028

)

$

990,039

$

2,902,542

The accompanying notes, together with the Notes to Consolidated Financial Statements included in Teradyne’s Annual Report on Form 10-K for the year ended December 31, 2024, are an integral part of the condensed consolidated financial statements.

4


TERADYNE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

For the Nine Months
Ended

September 28,
2025

September 29,
2024

(in thousands)

Cash flows from operating activities:

Net income

$

296,827

$

396,119

Adjustments to reconcile net income from operations to net cash provided by operating activities:

Depreciation

79,484

74,480

Stock-based compensation

47,561

45,267

Equity in net earnings of affiliate

16,709

1,075

Losses (gains) on investments

( 4,722

)

10,139

Provision for excess and obsolete inventory

19,175

15,516

Amortization

12,723

14,133

Gain on sale of business

( 57,486

)

Deferred taxes

( 29,100

)

( 26,261

)

Retirement plan losses (gains)

( 673

)

( 2,512

)

Other

3,344

( 5,041

)

Changes in operating assets and liabilities, net of businesses acquired:

Accounts receivable

( 111,787

)

( 65,266

)

Inventories

( 34,618

)

11,127

Prepayments and other assets

( 22,599

)

61,438

Accounts payable and other liabilities

121,447

( 63,666

)

Deferred revenue and customer advances

25,652

3,624

Retirement plans contributions

( 6,986

)

( 4,169

)

Income taxes

( 19,661

)

( 18,898

)

Net cash provided by operating activities

392,776

389,619

Cash flows from investing activities:

Purchases of property, plant and equipment

( 161,121

)

( 140,710

)

Acquisition of businesses, net of cash acquired

( 144,380

)

Purchase of investment in a business

( 25,519

)

( 527,060

)

Purchases of marketable securities

( 27,465

)

( 35,097

)

Proceeds from the sale of a business, net of cash and cash equivalents sold

90,348

Proceeds from maturities of marketable securities

41,621

33,163

Proceeds from sales of marketable securities

9,172

23,600

Proceeds from insurance

873

Net cash used for investing activities

( 307,692

)

( 554,883

)

Cash flows from financing activities:

Proceeds from borrowings on revolving credit facility

200,000

185,000

Repayments of borrowings on revolving credit facility

( 185,000

)

Dividend payments

( 57,574

)

( 56,936

)

Repurchase of common stock

( 518,658

)

( 55,053

)

Payments related to net settlement of employee stock compensation awards

( 15,254

)

( 13,833

)

Issuance of common stock under stock purchase and stock option plans

30,076

37,265

Net cash used for financing activities

( 361,410

)

( 88,557

)

Effects of exchange rate changes on cash and cash equivalents

( 4,328

)

6,286

Decrease in cash and cash equivalents

( 280,654

)

( 247,535

)

Cash and cash equivalents at beginning of period

553,354

757,571

Cash and cash equivalents at end of period

$

272,700

$

510,036

Non-cash investing activities:

Capital expenditures incurred but not yet paid:

$

7,821

$

3,679

The accompanying notes, together with the Notes to Consolidated Financial Statements included in Teradyne’s Annual Report on Form 10-K for the year ended December 31, 2024, are an integral part of the condensed consolidated financial statements.

5


TERADYNE, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

A. THE COMPANY

Teradyne, Inc. (“Teradyne”) is a leading global provider of automated test equipment and robotics solutions. Teradyne’s automated test systems are used to test semiconductors, wireless products, data storage, silicon photonics, and complex electronics systems in many industries including consumer electronics, wireless, automotive, industrial, computing, communications, and aerospace and defense industries. Teradyne’s robotics product offerings consist primarily of collaborative robotic arms and autonomous mobile robots used by global manufacturing, logistics and industrial customers to improve quality and increase manufacturing and material handling efficiency while reducing costs. In the first quarter of 2025, Teradyne identified opportunities for operational synergies amongst our production board test, defense and aerospace, and wireless test businesses leading to the creation of the Product Test division as a new segment effective March 2025. Teradyne’s automated test equipment and robotics products and services include:

semiconductor test (“Semiconductor Test”) systems;
robotics (“Robotics”) products; and
product test ("Product Test") systems, which include defense/aerospace ("Defense/Aerospace") test instrumentation and systems, circuit-board test and inspection ("Production Board Test") systems, wireless test systems ("Wireless Test"), and photonic integrated circuit ("PIC") test solutions.

B. ACCOUNTING POLICIES

Basis of Presentation

The condensed consolidated interim financial statements include the accounts of Teradyne and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated. These condensed consolidated interim financial statements are unaudited and reflect all normal recurring adjustments that are, in the opinion of management, necessary for the fair statement of such condensed consolidated interim financial statements. The December 31, 2024, condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by United States of America generally accepted accounting principles (“U.S. GAAP”) for complete financial statements. The accompanying financial information should be read in conjunction with the consolidated financial statements and notes thereto contained in Teradyne’s Annual Report on Form 10-K, filed with the U.S. Securities and Exchange Commission (“SEC”) on February 20, 2025, for the year ended December 31, 2024 .

Preparation of Financial Statements and Use of Estimates

The preparation of consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent liabilities. On an on-going basis, management evaluates its estimates, including those related to inventories, investments, goodwill, intangible and other long-lived assets, accounts receivable, income taxes, deferred tax assets and liabilities, pensions, warranties, and loss contingencies. Management bases its estimates on historical experience and on appropriate and customary assumptions that are believed to be reasonable under the circumstances, which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Management is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of the date of issuance of this Quarterly Report on Form 10-Q. These estimates may change, as new events occur and additional information is obtained. Actual results may differ significantly from these estimates under different assumptions or conditions.

C. RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

In December 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update ("ASU") 2023-09 – “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” , which requires expanded disclosures relating to the tax rate reconciliation, income taxes paid, income (loss) before income tax expense (benefit) and income tax expense (benefit), requiring a greater disaggregation of information for each. The provisions of ASU 2023-09 are effective for fiscal years beginning after December 15, 2024. Teradyne will apply the amendments in this update on a prospective basis. This ASU will have no impact on results of operations, cash flows or financial condition.

6


In November 2024, the FASB issued ASU 2024-03- "Income Statement - Reporting Comprehensive Income -Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses" , which requires disclosure of additional expense information on an annual and interim basis, including the amounts of inventory purchases, employee compensation, depreciation and intangible amortization included within each income statement expense caption. This standard is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. Teradyne is currently evaluating the impact of this new standard.

In July 2025, the FASB issued ASU 2025-05 - "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets" , which introduces a practical expedient related to the estimation of expected credit losses for current accounts receivable and current contract assets that arise from transactions accounted for under ASC 606. The practical expedient permits all entities to assume that current conditions as of the balance sheet date do not change for the remaining life of the asset. This standard is effective for fiscal years beginning after December 15, 2025, with early adoption permitted. Teradyne is currently evaluating the impact of this new standard and does not expect a material impact on its financial statements and related disclosures .

D. ACQUISITIONS

Quantifi Photonics

On May 31, 2025 , Teradyne acquired all of the issued and outstanding shares of Quantifi Photonics ("Quantifi"), a privately held company in New Zealand and a leader in photonic integrated circuit ("PIC") test solutions for a total purchase price of approximately $ 127.2 million , subject to customary working capital adjustments. The acquisition of Quantifi enables Teradyne to deliver scalable PIC test solutions. Teradyne's allocation of the purchase price was goodwill of $ 83.1 million , which is not deductible for tax purposes, acquired intangible assets of $ 43.6 million with a weighted average estimated useful life of 10.0 years, and $ 0.6 million of net tangible assets. The goodwill is attributable to cost synergies, assembled workforce and anticipated incremental revenue streams. Teradyne's estimates and assumptions used in determining the estimated fair values of certain assets and liabilities are subject to change within the measurement period (up to one year from the acquisition date) as a result of additional information obtained with regards to facts and circumstances that existed as of the acquisition date. The results of Quantifi have been included in Teradyne's Product Test segment from the date of acquisition.

Based upon a preliminary valuation, the total purchase price was allocated as follows:

Purchase Price Allocation

(in thousands)

Goodwill

$

83,068

Intangible Assets

43,600

Tangible assets acquired and liabilities assumed:

Current assets

6,148

Long-term deferred tax assets

6,271

Other non-current assets

2,516

Accounts payable and current liabilities

( 1,609

)

Long-term deferred tax liabilities

( 12,208

)

Other long-term liabilities

( 548

)

Total purchase price

$

127,238

Teradyne estimated the fair value of intangible assets using the income and cost approaches. The fair value of Developed technology was estimated using the Multi-Period Excess Earnings Method. Acquired intangible assets are amortized on a straight-line basis over their estimated useful lives. Components of these intangible assets and their estimated useful lives at the acquisition date are as follows:

Fair Value

Estimated Useful Life

(in thousands)

(in years)

Developed technology

$

38,600

10.0

Trademarks and tradenames

4,400

10.0

Customer relationships

600

8.0

Total Intangible Assets

$

43,600

10.0

7


Teradyne has not separately disclosed Quantifi's standalone contribution to total company revenue or income from operations before income taxes or pro forma financial information because the impact of the acquisition on the condensed consolidated financial statements is not material.

Automated Test Equipment Technology

On January 31, 2025 , Teradyne acquired from Infineon Technologies AG ("Infineon") its automated test equipment technology and associated development team ("AET") based in Regensburg, Germany for a total purchase price of 17.6 million Euros, equivalent to $ 18.3 million, subject to customary adjustments. AET adds resources and expertise to Teradyne and strengthens the relationship between Teradyne and Infineon. The AET acquisition was accounted for as a business combination and, accordingly, the results have been included in Teradyne's Semiconductor Test segment from the date of acquisition. As of the acquisition date, Teradyne's purchase price allocation was goodwill of $ 1.3 million for expected synergies from combining operations, acquired intangible assets of $ 6.4 million, consisting of developed technology and customer relationships, with a weighted average estimated useful life of 4.6 years, and $ 10.7 million of net tangible assets, including $ 11.7 million of inventory. The fair values of the tangible and identifiable intangible assets acquired and liabilities assumed are based on management's estimates and assumptions. The acquisition was not material to Teradyne's condensed consolidated financial statements.

8


E. REVENUE

Disaggregation of Revenue

The following table provides information about disaggregated revenue by timing of revenue recognition, primary geographical market, and major product lines.

Semiconductor Test

Robotics

Product Test

Total

System
on-a-Chip

Memory

IST

(in thousands)

For the Three Months Ended September 28, 2025

Timing of Revenue Recognition

Point in Time

$

367,404

$

118,878

$

33,575

$

73,213

$

69,579

$

662,649

Over Time

72,812

9,184

4,014

1,874

18,677

106,561

Total

$

440,216

$

128,062

$

37,589

$

75,087

$

88,256

$

769,210

Geographical Market

Asia Pacific

$

409,959

$

126,534

$

37,298

$

13,852

$

25,136

$

612,779

Americas

14,432

1,029

291

28,455

55,225

99,432

Europe, Middle East and Africa

15,825

499

32,780

7,895

56,999

Total

$

440,216

$

128,062

$

37,589

$

75,087

$

88,256

$

769,210

For the Three Months Ended September 29, 2024

Timing of Revenue Recognition

Point in Time

$

323,507

$

143,581

$

20,771

$

86,672

$

64,305

$

638,836

Over Time

68,848

6,798

5,013

1,979

15,824

98,462

Total

$

392,355

$

150,379

$

25,784

$

88,651

$

80,129

$

737,298

Geographical Market

Asia Pacific

$

364,476

$

137,890

$

23,844

$

13,833

$

29,775

$

569,818

Americas

17,150

1,325

1,940

40,775

43,494

104,684

Europe, Middle East and Africa

10,729

11,164

34,043

6,860

62,796

Total

$

392,355

$

150,379

$

25,784

$

88,651

$

80,129

$

737,298

For the Nine Months Ended September 28, 2025

Timing of Revenue Recognition

Point in Time

$

1,030,682

$

272,534

$

85,294

$

213,083

$

192,296

$

1,793,889

Over Time

212,512

25,879

13,348

5,857

55,202

312,798

Total

$

1,243,194

$

298,413

$

98,642

$

218,940

$

247,498

$

2,106,687

Geographical Market

Asia Pacific

$

1,132,944

$

292,683

$

95,782

$

44,853

$

85,583

$

1,651,845

Americas

65,404

4,023

2,860

88,086

138,239

298,612

Europe, Middle East and Africa

44,846

1,707

86,001

23,676

156,230

Total

$

1,243,194

$

298,413

$

98,642

$

218,940

$

247,498

$

2,106,687

For the Nine Months Ended September 29, 2024

Timing of Revenue Recognition

Point in Time

$

896,635

$

367,679

$

49,868

$

260,072

$

189,987

$

1,764,241

Over Time

211,612

21,626

15,784

6,480

47,253

302,755

Total

$

1,108,247

$

389,305

$

65,652

$

266,552

$

237,240

$

2,066,996

Geographical Market

Asia Pacific

$

1,016,674

$

357,993

$

61,014

$

48,615

$

86,079

$

1,570,375

Americas

59,912

13,631

4,638

110,415

116,799

305,395

Europe, Middle East and Africa

31,661

17,681

107,522

34,362

191,226

Total

$

1,108,247

$

389,305

$

65,652

$

266,552

$

237,240

$

2,066,996

Contract Balances

During the three and nine months ended September 28, 2025, Teradyne recognized $ 14.2 million and $ 64.8 million, respectively, that was included within the deferred revenue and customer advances balances at the beginning of the period. During the three and nine months ended September 29, 2024, Teradyne recognized $ 13.4 million and $ 60.2 million, respectively, that was included within the deferred revenue and customer advances balances at the beginning of the period. This revenue primarily relates to undelivered hardware, extended warranties, training, application support, and post contract support. Each of these represents a distinct performance obligation. As of September 28, 2025, Teradyne had $ 1,744.4 million of unsatisfied performance obligations. Teradyne expects to recognize approximately 89 % of the remaining performance obligations in the next 12 months and the remainder in 1 - 3 years.

9


Deferred revenue and customer advances consist of the following and are included in short and long-term deferred revenue and customer advances on the balance sheet:

September 28,
2025

December 31,
2024

(in thousands)

Maintenance, service and training

$

57,606

$

58,473

Customer advances, undelivered elements and other

68,316

48,118

Extended warranty

51,015

41,624

Total deferred revenue and customer advances

$

176,937

$

148,215

Accounts Receivable

During the three and nine months ended September 28, 2025, and September 29, 2024, Teradyne sold certain trade accounts receivables on a non-recourse basis to third-party financial institutions pursuant to factoring agreements. During the three months ended September 28, 2025, and September 29, 2024, total trade accounts receivable sold under the factoring agreements were $ 14.4 million and $ 36.1 million, respectively. During the nine months ended September 28, 2025, and September 29, 2024, total trade accounts receivable sold under the factoring agreements were $ 37.5 million and $ 116.8 million, respectively. Factoring fees for the sales of receivables were recorded in interest expense and were not material. Teradyne accounted for these transactions as sales of receivables and presented cash proceeds as cash provided by operating activities in the condensed consolidated statements of cash flows.

F. EQUITY METHOD INVESTMENT

On May 27, 2024, Teradyne paid 483.1 million Euros, equivalent to $ 524.1 million, to purchase a combination of previously issued and outstanding shares and shares newly issued by Technoprobe, S.p.A. ("Technoprobe"). The shares purchased represent 10 % of the issued and outstanding shares of Technoprobe. Teradyne also received a board seat as part of the purchase. Teradyne accounts for this investment using the equity method as a result of being able to exercise significant influence over the operating and financial decisions of Technoprobe.

The carrying value of this equity method investment as of September 28, 2025, was $ 538.0 million and $ 494.5 million as of December 31, 2024 in the condensed consolidated balance sheets. For the three months ended September 28, 2025, Teradyne recorded a $ 5.2 million loss related to equity in net earnings of affiliate and a $ 2.2 million loss in other comprehensive income (loss) related to investment. For the nine months ended September 28, 2025, Teradyne recorded a $ 16.7 million loss related to equity in net earnings of affiliate and an income of $ 60.2 million of other comprehensive income (loss) related to the equity method investment. For the three and nine months ended September 29, 2024, Teradyne recorded a loss of $ 1.1 million of equity in net earnings of affiliate and income of $ 15.4 million in other comprehensive income (loss) related this investment.

Based on the quoted closing price of Technoprobe stock as of September 28, 2025, the fair value of the publicly traded investment was $ 638.2 million.

Teradyne's equity method basis difference was calculated as the difference between the investment and the amount of underlying equity in net assets acquired. The basis differences, net of tax, will be amortized over the estimated useful lives.

Teradyne made an accounting policy election to report its share of Technoprobe's results on a 3-month lag, which is applied consistently from period to period. Teradyne records its share of Technoprobe's net income or loss and the amortization of equity method basis difference, as 'Equity in net earnings of affiliate' in the condensed consolidated statements of operations. Teradyne includes its share of Technoprobe's other comprehensive income and a cumulative translation adjustment in the condensed consolidated statements of comprehensive income .

G. DISPOSITIONS

On May 27, 2024, Teradyne completed the sale of the Device Interface Solutions ("DIS") business, a component of the Semiconductor Test segment, to Technoprobe for $ 85.0 million in cash, net of cash and cash equivalents sold, and a customary working capital adjustment. The sale resulted in a pre-tax gain of $ 57.1 million recorded as 'Gain on sale of business' in the condensed consolidated statement of operations. The transaction did not meet the criteria to be classified as a discontinued operation, as it did not represent a strategic shift that will have a major effect on operations and financial results.

10


H. INVENTORIES

Inventories, net consisted of the following at September 28, 2025, and December 31, 2024:

September 28,
2025

December 31,
2024

(in thousands)

Raw material

$

267,105

$

225,915

Work-in-process

57,050

41,964

Finished goods

42,597

30,613

Total inventories, net

$

366,752

$

298,492

Inventory reserves at September 28, 2025, and December 31, 2024, were $ 146.0 million and $ 141.4 million, respectively.

I. FINANCIAL INSTRUMENTS

Cash Equivalents

Teradyne considers all highly liquid investments with original maturities of three months or less at the date of acquisition to be cash equivalents.

Marketable Securities

Teradyne’s equity and debt mutual funds are classified as Level 1 and available-for-sale debt securities are classified as Level 2. The vast majority of Level 2 securities are fixed income securities priced by second party pricing vendors. These pricing vendors utilize the most recent observable market information in pricing these securities or, if specific prices are not available, use other observable inputs like market transactions involving identical or comparable securities.

During the three and nine months ended September 28, 2025, and September 29, 2024, there were no transfers in or out of Level 1, Level 2, or Level 3 financial instruments.

For the Three Months
Ended

For the Nine Months
Ended

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

(in millions)

(in millions)

Realized gains and losses included in 'Other (income) expense, net' in the condensed consolidated statement of operations

Realized gains

$

0.7

$

0.8

$

1.8

$

2.1

Realized losses

1.3

0.3

Unrealized gains and losses on equity securities included in 'Other (income) expense, net' in the condensed consolidated statement of operations

Unrealized gains on equity securities

3.1

2.2

7.4

5.4

Unrealized losses on equity securities

0.1

3.2

Unrealized gains and losses on available-for-sale debt securities are included in 'Accumulated other comprehensive income (loss)' in the condensed consolidated balance sheet.

The cost of securities sold is based on average cost.

11


The following tables set forth by fair value hierarchy Teradyne’s financial assets and liabilities that were measured at fair value on a recurring basis as of September 28, 2025, and December 31, 2024.

September 28, 2025

Quoted Prices
in Active
Markets for
Identical
Instruments
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Total

(in thousands)

Assets

Cash

$

180,730

$

$

$

180,730

Cash equivalents

91,970

91,970

Available-for-sale securities:

U.S. Treasury securities

44,759

44,759

Corporate debt securities

36,748

36,748

Debt mutual funds

14,766

14,766

Certificates of deposit and time deposits

1,613

1,613

U.S. government agency securities

1,098

1,098

Non-U.S. government securities

937

937

Equity securities:

Mutual funds

54,754

54,754

$

342,220

$

85,155

$

$

427,375

Derivative assets

310

310

Total

$

342,220

$

85,465

$

$

427,685

Liabilities

Derivative liabilities

1,129

$

1,129

Total

$

$

1,129

$

$

1,129

Reported as follows:

(Level 1)

(Level 2)

(Level 3)

Total

(in thousands)

Assets

Cash and cash equivalents

$

272,700

$

$

$

272,700

Long-term marketable securities

69,520

60,138

-

129,658

Marketable securities

25,017

25,017

Prepayments

310

310

Total

$

342,220

$

85,465

$

$

427,685

Liabilities

Other current liabilities

$

$

1,129

$

$

1,129

Total

$

$

1,129

$

$

1,129

12


December 31, 2024

Quoted Prices
in Active
Markets for
Identical
Instruments
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Total

(in thousands)

Assets

Cash

$

261,176

$

$

$

261,176

Cash equivalents

283,037

9,141

292,178

Available-for-sale securities:

U.S. Treasury securities

44,942

44,942

Corporate debt securities

35,696

35,696

Certificates of deposit and time deposits

21,689

21,689

Debt mutual funds

8,951

8,951

U.S. government agency securities

3,970

3,970

Non-U.S. government securities

773

773

Equity securities:

Mutual Funds

54,412

54,412

$

607,576

$

116,211

$

$

723,787

Derivative assets

1,665

1,665

Total

$

607,576

$

117,876

$

$

725,452

Liabilities

Derivative liabilities

1,324

1,324

Total

$

$

1,324

$

$

1,324

Reported as follows:

(Level 1)

(Level 2)

(Level 3)

Total

(in thousands)

Assets

Cash and cash equivalents

$

544,213

$

9,141

$

$

553,354

Marketable securities

46,312

46,312

Long-term marketable securities

63,363

60,758

124,121

Prepayments

1,665

1,665

Total

$

607,576

$

117,876

$

$

725,452

Liabilities

Other current liabilities

$

$

1,324

$

$

1,324

Total

$

$

1,324

$

$

1,324

The carrying amounts and fair values of Teradyne’s financial instruments at September 28, 2025, and December 31, 2024, were as follows:

September 28, 2025

December 31, 2024

Carrying Value

Fair Value

Carrying Value

Fair Value

(in thousands)

Assets

Cash and cash equivalents

$

272,700

$

272,700

$

553,354

$

553,354

Marketable securities

154,675

154,675

170,433

170,433

Derivative assets

310

310

1,665

1,665

Liabilities

Derivative liabilities

1,129

1,129

1,324

1,324

The fair values of accounts receivable, net and accounts payable approximate the carrying value due to the short-term nature of these instruments.

13


The following table summarizes the composition of available-for-sale marketable securities at September 28, 2025:

September 28, 2025

Available-for-Sale

Cost

Unrealized
Gain

Unrealized
(Loss)

Fair
Market
Value

Fair Market
Value of
Investments
with Unrealized
Losses

(in thousands)

U.S. Treasury securities

$

49,271

$

63

$

( 4,575

)

$

44,759

$

21,338

Corporate debt securities

40,281

280

( 3,813

)

36,748

24,216

Debt mutual funds

14,945

( 179

)

14,766

2,972

Certificates of deposit and time deposits

1,613

1,613

U.S. government agency securities

1,098

1,098

1,098

Non-U.S. government securities

937

937

$

108,145

$

343

$

( 8,567

)

$

99,921

$

49,624

Reported as follows:

Cost

Unrealized
Gain

Unrealized
(Loss)

Fair
Market
Value

Fair Market
Value of
Investments
with Unrealized
Losses

(in thousands)

Marketable securities

$

25,012

$

25

$

( 20

)

$

25,017

$

6,517

Long-term marketable securities

83,133

318

( 8,547

)

74,904

43,107

$

108,145

$

343

$

( 8,567

)

$

99,921

$

49,624

The following table summarizes the composition of available-for-sale marketable securities at December 31, 2024:

December 31, 2024

Available-for-Sale

Cost

Unrealized
Gain

Unrealized
(Loss)

Fair
Market
Value

Fair Market
Value of
Investments
with Unrealized
Losses

(in thousands)

U.S. Treasury securities

$

49,879

$

14

$

( 4,951

)

$

44,942

$

30,530

Corporate debt securities

40,395

79

( 4,778

)

35,696

27,824

Certificates of deposit and time deposits

21,689

21,689

Debt mutual funds

9,299

( 348

)

8,951

3,238

U.S. government agency securities

3,966

5

( 1

)

3,970

1,946

Non-U.S. government securities

773

773

$

126,001

$

98

$

( 10,078

)

$

116,021

$

63,538

Reported as follows:

Cost

Unrealized
Gain

Unrealized
(Loss)

Fair
Market
Value

Fair Market
Value of
Investments
with Unrealized
Losses

(in thousands)

Marketable securities

$

46,349

$

16

$

( 53

)

$

46,312

$

10,454

Long-term marketable securities

79,652

82

( 10,025

)

69,709

53,084

$

126,001

$

98

$

( 10,078

)

$

116,021

$

63,538

14


As of September 28, 2025, the fair market value of investments with unrealized losses less than one year and greater than one year totaled $ 11.8 million and $ 37.8 million, respectively. As of December 31, 2024, the fair market value of investments with unrealized losses for less than one year and greater than one year totaled $ 22.6 million and $ 40.9 million, respectively.

Teradyne reviews its investments to identify and evaluate investments that have an indication of possible impairment. Based on this review, Teradyne determined that the unrealized losses related to these investments at September 28, 2025, and December 31, 2024, were not other than temporary.

The contractual maturities of investments in available-for-sale securities held at September 28, 2025, were as follows:

September 28, 2025

Cost

Fair Market
Value

(in thousands)

Due within one year

$

25,012

$

25,017

Due after 1 year through 5 years

24,346

24,202

Due after 5 years through 10 years

8,575

8,683

Due after 10 years

35,267

27,253

Total

$

93,200

$

85,155

Contractual maturities of investments in available-for-sale securities held at September 28, 2025, exclude debt mutual funds with a fair market value of $ 14.8 million as they do not have a contractual maturity date.

Derivatives

Teradyne conducts business in various foreign countries, with certain transactions denominated in local currencies. As a result, Teradyne is exposed to risks relating to changes in foreign currency exchange rates. Teradyne’s foreign currency risk management objective is to minimize the effect of exchange rate fluctuations associated with the remeasurement of monetary assets and liabilities denominated in foreign currencies, and changes in its cash inflows attributable to the forecasted cash flows from certain foreign currency denominated revenues.

To minimize the effect of exchange rate fluctuations associated with the remeasurement of monetary assets and liabilities denominated in foreign currencies, Teradyne enters into foreign currency forward contracts. The change in fair value of these derivatives is recorded directly in earnings and is used to offset the change in value of monetary assets and liabilities denominated in foreign currencies.

Teradyne also enters into foreign currency forward and option contracts designated as cash flow hedges to hedge the risk of changes in its cash inflows attributable to changes in foreign currency exchange rates. The cash flow hedges have maturities of less than six months and mature in the period of revenue recognition for certain products and services in backlog and forecasted to be recognized in a future period. Teradyne evaluates cash flow hedges for effectiveness at inception based on the critical terms match method. The hedges are not expected to incur any ineffectiveness however a quarterly qualitative assessment of effectiveness is done to determine if the critical terms match method remains appropriate to use. The change in fair value of the contracts is recorded in accumulated other comprehensive income (loss) and reclassified to earnings at maturity date.

Teradyne does not use derivative financial instruments for speculative purposes.

15


At September 28, 2025, and December 31, 2024, Teradyne had the following contracts to buy and sell non-U.S. currencies for U.S. dollars and other non-U.S. currencies with the following notional amounts:

Gross Notional Value

September 28,
2025

December 31,
2024

(in millions)

Currency Hedged (Buy/Sell)

U.S. dollar/Taiwan dollar

24.9

14.5

U.S. dollar/Japanese yen

8.7

12.6

U.S. dollar/Danish krone

7.0

U.S. dollar/Korean won

4.0

4.2

U.S. dollar/British pound sterling

1.8

1.2

Singapore dollar/U.S. dollar

48.1

28.9

Euro/U.S. dollar

16.9

22.3

Danish krone/Chinese yuan

10.3

10.5

Philippine peso/U.S. dollar

1.8

9.4

Chinese yuan/U.S. dollar

0.9

1.6

Danish krone/U.S. dollar

0.8

16.9

Total

$

125.2

$

122.1

The fair value of the outstanding contracts was a net loss of $ 0.8 million and a net loss of $ 0.6 million at September 28, 2025, and December 31, 2024, respectively.

Unrealized gains and losses on foreign currency forward contracts and foreign currency remeasurement gains and losses on monetary assets and liabilities are included in 'Other (income) expense, net' in the condensed consolidated statement of operations.

At September 28, 2025, and December 31, 2024, Teradyne had the following cash flow hedge contracts to buy and sell non-U.S. currencies for U.S. dollars with the following notional amounts:

Gross Notional Value

September 28,
2025

December 31,
2024

(in millions)

Currency Hedged (Buy/Sell)

U.S. dollar/Japanese yen

$

$

15.6

Total

$

$

15.6

The fair value of the outstanding cash flow hedge contracts was a gain of $ 0.9 million at December 31, 2024.

Unrealized gains and losses on foreign currency cash flow hedge contracts are included in accumulated other comprehensive income (loss). At maturity, the gains or losses associated with cash flow hedge contracts are recorded to revenue.

On November 7, 2023, in connection with Teradyne's agreement to acquire a 10 % investment in Technoprobe, Teradyne purchased a call option to buy 481.0 million Euros. The expiration date of the option was April 26, 2024 . On April 12, 2024, Teradyne entered into a forward to buy 481.0 million Euros which expired on May 23, 2024 . For the nine months ended September 29, 2024 , a realized loss of $ 9.8 million was recorded in 'Other (income) expense, net' in the condensed consolidated statement of operations.

16


The following table summarizes the fair value of derivative instruments as of September 28, 2025, and December 31, 2024:

Balance Sheet Location

September 28,
2025

December 31,
2024

(in thousands)

Derivatives not designated as hedging instruments:

Foreign exchange forward contracts

Other current assets

310

725

Foreign exchange forward contracts

Other current liabilities

( 1,129

)

( 1,324

)

Derivatives designated as hedging instruments:

Foreign exchange forward contracts

Other current assets

940

Total derivatives

$

( 819

)

$

341

The following table summarizes the effect of derivative instruments recognized in the statement of operations for the three and nine months ended September 28, 2025, and September 29, 2024:

For the Three Months
Ended

For the Nine Months
Ended

Location of (Gains) Losses
Recognized in Statement
of Operations

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

(in thousands)

(in thousands)

Derivatives not designated as hedging instruments:

Foreign exchange forward contracts (1)

Other (income) expense, net

$

218

$

4,829

$

174

$

686

Foreign exchange option contracts

Other (income) expense, net

9,764

Derivatives designated as hedging instruments:

Foreign exchange forward and option contracts

Revenue

( 449

)

( 2,280

)

Total Derivatives

$

218

$

4,829

$

( 275

)

$

8,170

(1)
The table does not reflect the corresponding gains and losses from the remeasurement of the monetary assets and liabilities denominated in foreign currencies. For the three and nine months ended September 28, 2025, net losses from remeasurement of monetary assets and liabilities denominated in foreign currencies were $ 2.8 million and $ 6.2 million, respectively. For the three and nine months ended September 29, 2024, net losses (gains) from remeasurement of monetary assets and liabilities denominated in foreign currencies were $ ( 2.9 ) million and $ 3.1 million, respectively.

See Note J: “Debt” regarding derivatives related to the convertible senior notes.

J. DEBT

Convertible Senior Notes

On December 12, 2016, Teradyne completed a private offering of $ 460.0 million aggregate principal amount of 1.25 % convertible senior unsecured notes (the “Notes”). The Notes matured on December 15, 2023.

Concurrent with the offering of the Notes, Teradyne entered into convertible note hedge transactions (the “Note Hedge Transactions”) with the initial purchasers or their affiliates (the “Option Counterparties”). The Note Hedge Transactions covered, subject to customary anti-dilution adjustments, the number of shares of the common stock that underlie the Notes. Separately and concurrent with the pricing of the Notes, Teradyne entered into warrant transactions with the Option Counterparties (the “Warrant Transactions”) in which it sold net-share-settled (or, at its election subject to certain conditions, cash-settled) warrants to the Option Counterparties. The Warrant Transactions, which began expiring on March 18, 2024 , and continued to expire through July 10, 2024 , covered, subject to customary anti-dilution adjustments, ap proximately 1.3 million shares of common stock. During the three and nine months ended September 29, 2024, 1.3 million and 14.7 million warrants expired, resulting in the issuance of 1.2 million and 10.0 million shares of Teradyne common stock, respectively.

Revolving Credit Facility

On May 1, 2020, Teradyne entered into a credit agreement (the “Credit Agreement”) with Truist Bank, as administrative agent and collateral agent, and the lenders party thereto. The Credit Agreement provided for a three-year , senior secured revolving credit facility of $ 400.0 million (the “Credit Facility”).

17


On December 10, 2021, the Credit Agreement was amended to extend the maturity date of the Credit Facility to December 10, 2026. On October 5, 2022, the Credit Agreement was amended to increase the amount of the Credit Facility to $ 750.0 million from $ 400.0 million. On November 7, 2023, the Credit Agreement was amended to allow for the purchase of the shares of Technoprobe.

The Credit Agreement provides that, subject to customary conditions, Teradyne may seek to obtain from existing or new lenders the available incremental amount under the Credit Facility, not to exceed the greater of $ 200.0 million or 15 % of consolidated EBIDTA. The interest rate applicable to loans under the Credit Facility are, at Teradyne’s option, equal to either a base rate plus a margin ranging from 0.00 % to 0.75 % per annum or SOFR plus a margin ranging from 1.10 % to 1.85 % per annum, based on the consolidated leverage ratio of Teradyne. In addition, Teradyne will pay a commitment fee on the unused portion of the commitments under the Credit Facility ranging from 0.15 % to 0.25 % per annum, based on the then applicable consolidated leverage ratio.

Teradyne is not required to repay any loans under the Credit Facility prior to maturity, subject to certain customary exceptions. Teradyne is permitted to prepay all or any portion of the loans under the Credit Facility prior to maturity without premium or penalty, other than customary SOFR breakage costs.

The Credit Agreement contains customary events of default, representations, warranties and affirmative and negative covenants that, among other things, limit Teradyne’s ability to sell assets, grant liens on assets, incur other secured indebtedness and make certain investments and restricted payments, all subject to exceptions set forth in the Credit Agreement. The Credit Agreement also requires Teradyne to satisfy two financial ratios measured as of the end of each fiscal quarter: a consolidated leverage ratio and an interest coverage ratio.

The Credit Facility is guaranteed by certain of Teradyne’s domestic subsidiaries and collateralized by assets of Teradyne and such subsidiaries, including a pledge of 65 % of the capital stock of certain foreign subsidiaries.

On May 16, 2024, Teradyne borrowed $ 185.0 million under the Credit Agreement to support the acquisition of 10 % of the issued and outstanding shares of Technoprobe. Teradyne fully repaid its borrowings on the revolving credit facility during the second quarter of 2024.

On September 4, 2025, and September 19, 2025, Teradyne borrowed a combined $ 200.0 million under the Credit Agreement to support the upcoming ramp for Semiconductor Test and the strategy to return cash to shareholders through share repurchases, dividends, and inorganic growth opportunities. The average interest rate on the borrowings is 5.29 %. As of September 28, 2025, Teradyne has not paid any interest on its outstanding balance from the Credit Facility.

The company accounts for this arrangement under ASC 470 Debt. All borrowings are recorded as short-term or long-term debt in the condensed consolidated balance sheet in accordance with Teradyne's ability and intent to repay the debt, as well as the contractual due date. When amounts are drawn on the revolver, interest is accrued and recognized within other accrued liabilities in the condensed consolidated balance sheet and expensed within Other (income) expense, net within the condensed consolidated statement of operations.

As of October 30, 2025, Teradyne has $ 250.0 million outstanding from the Credit Facility, and Teradyne was in compliance with all covenants under the Credit Agreement.

K. PREPAYMENTS

Prepayments consist of the following:

September 28,
2025

December 31,
2024

(in thousands)

Contract manufacturer and supplier prepayments

$

404,485

$

365,875

Prepaid maintenance and other services

18,324

22,176

Prepaid taxes

14,595

22,211

Other prepayments

31,836

18,824

Total prepayments

$

469,240

$

429,086

18


L. PRODUCT WARRANTY

Teradyne generally provides a one-year warranty on its products, commencing upon installation, acceptance or shipment. A provision is recorded upon revenue recognition to cost of revenues for estimated warranty expense based on historical experience. Related costs are charged to the warranty accrual as incurred. The balance below is included in other accrued liabilities.

For the Three Months
Ended

For the Nine Months
Ended

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

(in thousands)

(in thousands)

Balance at beginning of period

$

12,238

$

15,244

$

12,962

$

15,698

Accruals for warranties issued during the period

5,038

2,149

15,194

8,331

Accruals related to pre-existing warranties

( 255

)

( 545

)

( 1,177

)

( 1,513

)

Settlements made during the period

( 3,881

)

( 2,990

)

( 13,839

)

( 8,658

)

Balance at end of period

$

13,140

$

13,858

$

13,140

$

13,858

When Teradyne receives revenue for extended warranties, beyond one year, it is deferred and recognized on a straight-line basis over the contract period. Related costs are expensed as incurred. The balance below is included in short and long-term deferred revenue and customer advances.

For the Three Months
Ended

For the Nine Months
Ended

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

(in thousands)

(in thousands)

Balance at beginning of period

$

46,751

$

33,512

$

41,624

$

34,897

Deferral of new extended warranty revenue

10,573

9,714

28,216

22,316

Recognition of extended warranty deferred revenue

( 6,309

)

( 4,297

)

( 18,825

)

( 18,284

)

Balance at end of period

$

51,015

$

38,929

$

51,015

$

38,929

M. STOCK-BASED COMPENSATION

Under Teradyne’s stock compensation plans, Teradyne grants time-based restricted stock units, performance-based restricted stock units and stock options, and employees are eligible to purchase Teradyne’s common stock through its Employee Stock Purchase Plan (“ESPP”).

Service-based restricted stock unit awards granted to employees vest in equal annual installments over four years . Restricted stock unit awards granted to non-employee directors vest after a one-year period, with 100 % of the award vesting on the earlier of (a) the first anniversary of the grant date or (b) the date of the following year’s Annual Meeting of Shareholders. Teradyne expenses the cost of the restricted stock unit awards subject to time-based vesting, which is determined to be the fair market value of the shares at the date of grant, ratably over the period during which the restrictions lapse.

Performance-based restricted stock units (“PRSUs”) granted to Teradyne’s executive officers may have a performance metric based on relative total shareholder return (“TSR”). Teradyne’s three-year TSR performance is measured against the New York Stock Exchange (“NYSE”) Composite Index. The final number of TSR PRSUs that vest will vary based upon the level of performance achieved from 0 % to 200 % of the target shares. The TSR PRSUs will vest upon the three-year anniversary of the grant date. The TSR PRSUs are valued using a Monte Carlo simulation model. The number of units expected to be earned, based upon the achievement of the TSR market condition, is factored into the grant date Monte Carlo valuation. Compensation expense is recognized on a straight-line basis over the shorter of the three-year service period or the period from the grant to the date described in the retirement provisions below.

PRSUs granted to Teradyne’s executive officers may also have a performance metric based on three-year cumulative non-GAAP profit before interest and tax (“PBIT”) as a percent of Teradyne’s revenue. Non-GAAP PBIT is a financial measure equal to GAAP income from operations less restructuring and other, net; amortization of acquired intangible assets; acquisition and divestiture related charges or credits; pension actuarial gains and losses; non-cash convertible debt interest expense; and other non-recurring gains and charges such as ERP implementation related costs and equity modification charges. The final number of PBIT PRSUs that vest will vary based upon the level of performance achieved from 0 % to 200 % of the target shares. The PBIT PRSUs will vest upon the three-year anniversary of the grant date. Compensation expense is recognized on a straight-line basis over the shorter of the three-year

19


service period or the period from the grant date to the date described in the retirement provisions below. Compensation expense for executive officers meeting the retirement provisions prior to the grant date is recognized during the year following the grant. Compensation expense is recognized based on the number of units that are earned based upon the three-year Teradyne PBIT as a percent of Teradyne’s revenue, provided the executive officer remains an employee at the end of the three-year period subject to the retirement and termination eligibility provisions noted below.

If a PRSU recipient’s employment ends prior to the determination of the performance percentage due to (1) permanent disability or death or (2) retirement or termination other than for cause, after attaining both at least age 60 and at least 10 years of service, then all or a portion of the recipient’s PRSUs (based on the actual performance percentage achieved on the determination date) will vest on the date the performance percentage is determined. Except as set forth in the preceding sentence, no PRSUs will vest if the executive officer is no longer an employee at the end of the three-year period. Stock options to purchase Teradyne’s common stock at 100 % of the fair market value on the grant date vest in equal annual installments over four years from the grant date and have a maximum term of seven years .

On January 22, 2024, the Board enacted the Executive Retirement Policy for Restricted Stock Unit and Option Vesting (the "Retirement Policy"). Under the Retirem ent Policy, an executive officer that is over the age of 65 and has 10 or more years of service as of the effective date of his or her retirement will be eligible for continued vesting of his or her unvested time-based restricted stock units and stock options granted prior to his or her retirement date.

During the nine months ended September 28, 2025, and September 29, 2024, Teradyne granted 0.6 million and 0.6 million of service-based restricted stock unit awards to employees at a weighted average grant date fair value of $ 111.72 and $ 95.98 , respectively, and less than 0.1 million and 0.1 million of service-based restricted stock unit awards to non-employee directors at a weighted average grant date fair value of $ 79.78 and $ 120.38 , respectively.

During the nine months ended September 28, 2025, and September 29, 2024, Teradyne granted 0.1 million and 0.1 million of PBIT PRSUs with a weighted average grant date fair value of $ 106.44 and $ 94.51 , respectively.

During the nine months ended September 28, 2025, and September 29, 2024, Teradyne granted 0.1 million and 0.1 million of TSR PRSUs, with a weighted average grant date fair value of $ 107.44 and $ 102.51 , respectively. The grant date fair value was estimated using the Monte Carlo simulation model with the following assumptions:

For the Nine Months
Ended

September 28,
2025

September 29,
2024

Risk-free interest rate

4.1

%

3.9

%

Teradyne volatility-historical

41.8

%

42.4

%

NYSE Composite Index volatility-historical

14.6

%

15.6

%

Dividend yield

0.4

%

0.5

%

Expected volatility was based on the historical volatility of Teradyne’s stock and the NYSE Composite Index over the most recent three-year period. The risk-free interest rate was determined using the U.S. Treasury yield curve in effect at the time of the applicable grant. Dividend yield was based upon an estimated annual dividend amount of $ 0.48 per share divided by Teradyne’s stock price on the grant dates, which have a weighted average grant date stock price of $ 108.67 for the 2025 grants, and an estimated annual dividend amount of $ 0.48 per share divided by Teradyne’s stock price on the grant date of $ 95.83 for the 2024 grant.

During the nine months ended September 28, 2025, and September 29, 2024, Teradyne granted 0.1 million and 0.1 million of service-based stock options to executive officers at a weighted average grant date fair value of $ 41.93 and $ 37.50 , respectively.

The fair value of stock options was estimated using the Black-Scholes option-pricing model with the following assumptions:

For the Nine Months
Ended

September 28,
2025

September 29,
2024

Expected life (years)

4.0

4.0

Risk-free interest rate

4.2

%

4.0

%

Volatility-historical

43.9

%

46.3

%

Dividend yield

0.4

%

0.5

%

20


Teradyne determined the stock options’ expected life based upon historical exercise data for executive officers, the age of the executive officers and the terms of the stock option grant. Volatility was determined using historical volatility for a period equal to the expected life. The risk-free interest rate was determined using the U.S. Treasury yield curve in effect at the time of grant. Dividend yield was based upon an estimated annual dividend amount of $ 0.48 per share divided by Teradyne’s stock price on the grant date, which have a weighted average grant date stock price of $ 109.29 for the 2025 grant and an estimated annual dividend amount of $ 0.48 per share divided by Teradyne’s stock price on the grant date of $ 95.14 for the 2024 grant.

N. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

Changes in accumulated other comprehensive income (loss), which are presented net of tax, consist of the following:

Foreign
Currency
Translation
Adjustment

Unrealized
(Losses) Gains on
Marketable
Securities

Unrealized (Losses) Gains on Cash Flow Hedges

Retirement
Plans Prior
Service
Credit

Total

(in thousands)

Nine Months Ended September 28, 2025

Balance at December 31, 2024, net of tax of $ 0 , $( 2,174 ),
$
209 , $( 1,134 ), respectively

$

( 75,289

)

$

( 7,807

)

$

731

$

1,145

$

( 81,220

)

Other comprehensive (loss) gain before reclassifications,
net of tax of $
0 , $ 316 , $( 109 ), $ 0 , respectively

117,966

1,324

( 381

)

118,909

Amounts reclassified from accumulated other comprehensive
income (loss), net of tax of $
0 , $ 27 , $( 100 ), $( 1 ), respectively

89

( 350

)

( 6

)

( 267

)

Net current period other comprehensive loss, net of tax
of $
0 , $ 343 , $( 209 ), $( 1 ), respectively

117,966

1,413

( 731

)

( 6

)

118,642

Balance at September 28, 2025, net of tax of $ 0 , $( 1,831 ),
$
0 , $( 1,135 ), respectively

$

42,677

$

( 6,394

)

$

$

1,139

$

37,422

Nine Months Ended September 29, 2024

Balance at December 31, 2023, net of tax of $ 0 , $( 1,728 ),
$
142 , $( 1132 ), respectively

$

( 22,442

)

$

( 6,194

)

$

506

$

1,152

$

( 26,978

)

Other comprehensive (loss) gain before reclassifications,
net of tax of $
0 , $ 205 , $ 285 , $ 0 , respectively

22,751

885

1,014

24,650

Amounts reclassified from accumulated other comprehensive
income (loss), net of tax of $
0 , $ 24 , $( 500 ), $( 1 ), respectively

86

( 1,780

)

( 6

)

( 1,700

)

Net current period other comprehensive loss, net of tax
of $
0 , $ 229 , $( 215 ), $( 1 ), respectively

22,751

971

( 766

)

( 6

)

22,950

Balance at September 29, 2024, net of tax of $ 0 , $( 1,499 ),
$(
73 ), $( 1,133 ), respectively

$

309

$

( 5,223

)

$

( 260

)

$

1,146

$

( 4,028

)

Reclassifications out of accumulated other comprehensive income (loss) to the statement of operations for the three and nine months ended September 28, 2025, and September 29, 2024, were as follows:

Details about Accumulated Other Comprehensive Income (Loss) Components

For the Three Months
Ended

For the Nine Months
Ended

Affected Line Item
in the Statements
of Operations

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

(in thousands)

(in thousands)

Available-for-sale marketable securities:

Unrealized (losses) gains, net of tax of $ 0 , 2 , $( 27 ), $( 24 ), respectively

$

$

7

$

( 89

)

$

( 86

)

Other (income) expense, net

Cash flow hedges:

Unrealized (losses) gains, net of tax of $ 0 , $ 0 , $ 100 , $ 500 , respectively

350

1,780

Revenue

Defined benefit pension and postretirement plans:

Amortization of prior service credit, net of tax of $ 0 , $ 0 , $ 1 , $ 1 , respectively

2

2

6

6

(a)

Total reclassifications, net of tax of $ 0 , $ 2 , $ 74 , $ 477 , respectively

$

2

$

9

$

267

$

1,700

Net income

(a)
The amortization of prior service credit is included in the computation of net periodic postretirement benefit cost. See Note R: “Retirement Plans.”

21


O. GOODWILL AND ACQUIRED INTANGIBLE ASSETS

Goodwill

Goodwill is considered impaired when the carrying value of a reporting unit exceeds its estimated fair value. Teradyne performs its annual goodwill impairment test as required under the provisions of Accounting Standards Codification ("ASC") 350-10, “Intangibles—Goodwill and Other” on December 31 of each fiscal year unless there are negative qualitative factors relating to macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, and other relevant events and changes during an interim period. The presence of such factors could, under certain circumstances, be a triggering event that causes us to perform a goodwill impairment test.

At June 29, 2025, the Company identified a triggering event for the Robotics reporting unit and performed an interim impairment test of the related goodwill and long-lived assets, including intangible assets. Based on the analysis performed, Teradyne did not record an impairment.

At September 28, 2025, Teradyne assessed the above factors for all reporting units, including the Robotics reporting unit, and performed a triggering event assessment, concluding that no events or circumstances occurred that indicated it was more likely than not that the fair value was below its carrying amount. Accordingly, the Company did not identify a triggering event and no quantitative impairment test of goodwill was required.

The changes in the carrying amount of goodwill by reportable segments for the nine months ended September 28, 2025, were as follows:

Robotics

Semiconductor
Test

Product
Test

Total

(in thousands)

Balance at December 31, 2024

Goodwill

$

375,298

$

262,117

$

520,518

$

1,157,933

Accumulated impairment losses

( 260,540

)

( 502,026

)

( 762,566

)

Total Goodwill

375,298

1,577

18,492

395,367

AET acquisition

1,257

1,257

Quantifi acquisition

83,068

83,068

Foreign currency translation adjustment

39,648

210

39,858

Balance at September 28, 2025

Goodwill

$

414,946

$

263,584

$

603,586

$

1,282,116

Accumulated impairment losses

( 260,540

)

( 502,026

)

( 762,566

)

Total Goodwill

$

414,946

$

3,044

$

101,560

$

519,550

Intangible Assets

Teradyne reviews long-lived assets for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable or that the useful lives of these assets are no longer appropriate.

Amortizable intangible assets consist of the following and are included in intangible assets, net on the balance sheet:

Gross
Carrying
Amount (1)

Accumulated
Amortization (1)

Foreign
Currency
Translation
Adjustment

Net
Carrying
Amount

(in thousands)

Balance at September 28, 2025

Developed technology

$

250,025

$

( 208,314

)

$

60

$

41,771

Customer relationships

56,480

( 51,335

)

204

5,349

Tradenames and trademarks

40,487

( 31,853

)

( 1,046

)

7,588

Total intangible assets

$

346,992

$

( 291,502

)

$

( 782

)

$

54,708

Balance at December 31, 2024

Developed technology

$

267,706

$

( 255,448

)

$

( 5,820

)

$

6,438

Customer relationships

52,109

( 49,562

)

204

2,751

Tradenames and trademarks

59,007

( 50,805

)

( 1,464

)

6,738

Total intangible assets

$

378,822

$

( 355,815

)

$

( 7,080

)

$

15,927

22


(1)
In the nine months ended September 2 8, 2025 , $ 81.8 million of a mortizable intangible assets became fully amortized and have been eliminated from the gross carrying amount and accumulated amortization.

Aggregate intangible asset amortization expense was $ 3.5 million and $ 11.8 million , respectively, for the three and nine months ended September 28, 2025, and $ 4.7 million and $ 14.1 million , respectively, for the three and nine months ended September 29, 2024.

Estimated intangible asset amortization expense for each of the five succeeding fiscal years and thereafter is as follows:

Year

Amortization
Expense

(in thousands)

2025

$

3,409

2026

8,215

2027

6,999

2028

6,918

2029

5,557

Thereafter

23,610

P. NET INCOME PER COMMON SHARE

The following table sets forth the computation of basic and diluted net income per common share:

For the Three Months
Ended

For the Nine Months
Ended

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

(in thousands, except per share amounts)

(in thousands, except per share amounts)

Net income for basic and diluted net income per share

$

119,558

$

145,649

$

296,827

$

396,119

Weighted average common shares-basic

158,595

163,002

160,021

157,951

Effect of dilutive potential common shares:

Restricted stock units

495

768

366

637

Stock options

4

13

3

13

Employee stock purchase plan

3

10

19

5

Convertible note hedge warrant shares (1)

460

4,751

Dilutive potential common shares

502

1,251

388

5,406

Weighted average common shares-diluted

159,097

164,253

160,409

163,357

Net income per common share-basic

$

0.75

$

0.89

$

1.85

$

2.51

Net income per common share-diluted

$

0.75

$

0.89

$

1.85

$

2.42

(1)
Convertible notes hedge warrant shares were calculated using the difference between the average Teradyne stock price for the period and the warrant price, multiplied by the number of warrant shares. The result of this calculation, representing the total intrinsic value of the warrant, was divided by the average Teradyne stock price for the period.

The computation of diluted net income per common share for the three and nine months ended September 28, 2025, excludes the effect of the potential vesting of 0.2 million and 0.7 million, respectively, of restricted stock units because the effect would have been anti-dilutive.

The computation of diluted net income per common share for the three and nine months ended September 29, 2024, excludes the effect of the potential vesting of 0.1 million and 0.5 million, respectively, of restricted stock units because the effect would have been anti-dilutive.

Q. RESTRUCTURING AND OTHER

During the three months ended September 28, 2025, Teradyne recorded $ 4.8 million of severance charges, $ 3.6 million of which is related to headcount reductions in Robotics . During the three months ended September 28, 2025 , Teradyne made $ 1.1 million

23


of Robotics severance payments. Teradyne expects all Robotics severance payments to be made prior to the end of the third quarter of 2026.

During the three months ended September 29, 2024 , Teradyne recorded restructuring and other charges primarily related to $ 1.3 million of severance charges related to headcount reductions principally in Robotics.

During the nine months ended September 28, 2025, Teradyne recorded $ 18.5 million of severance charges, $ 13.5 million of which is related to the Robotics restructuring which impacted approximately 150 employees, $ 2.2 million of which is related to Product Test and $ 1.4 million of which is related to Semiconductor Test . During the nine months ended September 28, 2025, Teradyne made $ 9.2 million of Robotics severance payments. Teradyne expects all Robotics severance payments to be made prior to the end of the third quarter of 2026. Additionally, Teradyne recorded $ 2.0 million of acquisition and divestiture expenses related primarily to the Quantifi Acquisition and $ 1.5 million of charges related to lease terminations .

During the nine months ended September 29, 2024, Teradyne recorded restructuring and other charges primarily related to $ 5.3 million of severance and other charges, related to headcount reductions of 87 people primarily in Robotics and Semiconductor Test, which included charges related to a voluntary early retirement program for employees meeting certain conditions, and $ 2.2 million of acquisition and divestiture expenses related to the Technoprobe transactions.

R. RETIREMENT PLANS

ASC 715, “Compensation—Retirement Benefits,” requires an employer with defined benefit plans or other postretirement benefit plans to recognize an asset or a liability on its balance sheet for the overfunded or underfunded status of the plans as defined by ASC 715. The pension asset or liability represents a difference between the fair value of the pension plan’s assets and the projected benefit obligation at December 31. Teradyne uses a December 31 measurement date for all its plans.

Defined Benefit Pension Plans

Teradyne has defined benefit pension plans covering a portion of domestic employees and employees of certain non-U.S. subsidiaries. Benefits under these plans are based on employees’ years of service and compensation. Teradyne’s funding policy is to make contributions to these plans in accordance with local laws and to the extent that such contributions are tax deductible. The assets of the U.S. qualified pension plan consist primarily of fixed income and equity securities. In addition, Teradyne has an unfunded supplemental executive defined benefit plan in the United States to provide retirement benefits in excess of levels allowed by the Employment Retirement Income Security Act (“ERISA”) and the Internal Revenue Code (the “IRC”), as well as unfunded qualified foreign plans.

During the three months ended September 28, 2025, Teradyne recognized a non-cash settlement gain of $ 0.8 million related to lump sum distributions paid to retired or terminated employees. The charge is the result of the aggregate of the cumulative lump sum distributions exceeded the total annual service and interest costs. Due to the remeasurement, the reduction in pension benefit obligation and pension assets was $ 4.7 million.

During the three months ended September 29, 2024 , Teradyne purchased a group annuity contract for its retiree participants in the U.S. qualified pension plan. Under the group annuity, the accrued pension obligation for 132 retiree participants were transferred to an insurance company. The reduction in the pension benefit obligation and pension assets was $ 23.4 million. During the three and nine months ended September 29, 2024, Teradyne recorded settlement expense of $ 0.4 million related to the retiree group annuity transaction.

In the nine months ended September 28, 2025, and September 29, 2024, Teradyne contributed $ 2.4 million and $ 2.3 million, respectively, to the U.S. supplemental executive defined benefit pension plan, and $ 3.6 million and $ 0.8 million, respectively, to certain qualified pension plans for non-U.S. subsidiaries.

24


For the three and nine months ended September 28, 2025, and September 29, 2024, Teradyne’s net periodic pension cost was comprised of the following:

For the Three Months Ended

September 28, 2025

September 29, 2024

United
States

Foreign

United
States

Foreign

(in thousands)

Service cost

$

153

$

149

$

216

$

119

Interest cost

1,426

300

1,590

256

Expected return on plan assets

( 989

)

( 24

)

( 1,204

)

( 23

)

Net actuarial loss (gain)

( 2,262

)

Settlement loss (gain)

( 800

)

Settlement expense

394

Total net periodic pension cost

$

( 210

)

$

425

$

( 1,266

)

$

352

For the Nine Months Ended

September 28, 2025

September 29, 2024

United
States

Foreign

United
States

Foreign

(in thousands)

Service cost

$

462

$

437

$

665

$

360

Interest cost

4,299

892

4,883

766

Expected return on plan assets

( 2,970

)

( 71

)

( 3,737

)

( 58

)

Net actuarial loss (gain)

41

( 2,151

)

( 242

)

Settlement loss (gain)

( 800

)

Settlement expense

394

( 24

)

Total net periodic pension cost

$

1,032

$

1,258

$

54

$

802

Postretirement Benefit Plan

In addition to receiving pension benefits, Teradyne employees in the United States who meet early retirement eligibility requirements as of their termination dates may participate in Teradyne’s Welfare Plan, which includes medical and dental benefits up to age 65. Death benefits provide a fixed sum to retirees’ survivors and are available to all retirees. Substantially all of Teradyne’s current U.S. employees could become eligible for these benefits and the existing benefit obligation relates primarily to those employees. During the nine months ended September 28, 2025, Teradyne recorded special termination benefit charges associated with a voluntary early retirement program.

For the three and nine months ended September 28, 2025, and September 29, 2024, Teradyne’s net periodic postretirement benefit cost was comprised of the following:

For the Three Months
Ended

For the Nine Months
Ended

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

(in thousands)

(in thousands)

Service cost

$

9

$

9

$

27

$

28

Interest cost

76

72

229

217

Amortization of prior service credit

( 2

)

( 2

)

( 7

)

( 7

)

Special termination benefits

684

462

Net actuarial loss (gain)

87

( 94

)

Total net periodic postretirement benefit cost

$

83

$

79

$

1,020

$

606

25


S. COMMITMENTS AND CONTINGENCIES

Purchase Commitments

As of September 28, 2025 , Teradyne had entered into purchase commitments for certain components and materials. The purchase commitments covered by the agreements aggregate to approximately $ 730.0 million, of which $ 715.7 million is for less than one year.

Legal Claims

Teradyne is subject to various legal proceedings and claims which have arisen in the ordinary course of business such as, but not limited to, patent, employment, commercial and environmental matters. Teradyne believes that it has meritorious defenses against all pending claims and intends to vigorously contest them. While it is not possible to predict or determine the outcomes of any pending claims or to provide possible ranges of losses that may arise, Teradyne believes the potential losses associated with all of these actions are unlikely to have a material adverse effect on its business, financial position or results of operations.

Guarantees and Indemnification Obligations

Teradyne provides indemnification, to the extent permitted by law, to its officers, directors, employees and agents for liabilities arising from certain events or occurrences, while the officer, director, employee, or agent, is or was serving, at Teradyne’s request in such capacity. Teradyne may enter into indemnification agreements with certain of its officers and directors. With respect to acquisitions, Teradyne provides indemnifications to or assumes indemnification obligations for the current and former directors, officers and employees of the acquired companies in accordance with the acquired companies’ by-laws and charter. As a matter of practice, Teradyne has maintained directors’ and officers’ liability insurance coverage including coverage for directors and officers of acquired companies.

Teradyne enters into agreements in the ordinary course of business with customers, resellers, distributors, integrators and suppliers. Most of these agreements require Teradyne to defend and/or indemnify the other party against intellectual property infringement claims brought by a third party with respect to Teradyne’s products. From time to time, Teradyne also indemnifies customers and business partners for damages, losses and liabilities they may suffer or incur relating to personal injury, personal property damage, product liability, breach of confidentiality obligations and environmental claims relating to the use of Teradyne’s products and services or resulting from the acts or omissions of Teradyne, its employees, authorized agents or subcontractors. On occasion, Teradyne has also provided guarantees to customers regarding the delivery and performance of its products in addition to the warranty described below.

As a matter of ordinary course of business, Teradyne warrants that its products will substantially perform in accordance with its standard published specifications in effect at the time of delivery. Most warranties have a one-year duration commencing from installation. A provision is recorded upon revenue recognition to cost of revenues for estimated warranty expense based upon historical experience. When Teradyne receives revenue for extended warranties beyond the standard duration, the revenue is deferred and recognized on a straight-line basis over the contract period. Related costs are expensed as incurred. As of September 28, 2025, and December 31, 2024, Teradyne had a product warranty accrual of $ 13.1 million and $ 13.0 million, respectively, included in other accrued liabilities and revenue deferrals related to extended warranties of $ 51.0 million and $ 41.6 million, respectively, included in short and long-term deferred revenue and customer advances.

In addition, in the ordinary course of business, Teradyne provides minimum purchase guarantees to certain vendors to ensure continuity of supply against the market demand. Although some of these guarantees provide penalties for cancellations and/or modifications to the purchase commitments as the market demand decreases, most of the guarantees do not. Therefore, as the market demand decreases, Teradyne re-evaluates these guarantees and determines what charges, if any, should be recorded.

With respect to its agreements covering product, business or entity divestitures and acquisitions, Teradyne provides certain representations, warranties and covenants to purchasers and agrees to indemnify and hold such purchasers harmless against breaches of such representations, warranties and covenants. Many of the indemnification claims have a definite expiration date while some remain in force indefinitely. With respect to its acquisitions, Teradyne may, from time to time, assume the liability for certain events or occurrences that took place prior to the date of acquisition.

26


As a matter of ordinary course of business, Teradyne occasionally guarantees certain indebtedness obligations of its subsidiary companies, limited to the borrowings from financial institutions, purchase commitments to certain vendors and lease commitments to landlords.

Based on historical experience and information known as of September 28, 2025, and December 31, 2024 , except for product warranty, Teradyne has not recorded any liabilities for these guarantees and obligations because the amount would be immaterial.

T. INCOME TAXES

The effective tax rate for the three months ended September 28, 2025, and September 29, 2024, was 15.8 % and 7.8 % , respectively. The increase in the effective tax rate from the three months ended September 29, 2024, to the three months ended September 28, 2025, is primarily attributable to decreases in benefits related to reserves for uncertain tax positions, tax credits and the international provision of the U.S. Tax Cuts and Jobs Act of 2017. These were partially offset by an increase in benefit from a projected shift in the geographic distribution of income.

The effective tax rate for the nine months ended September 28, 2025, and September 29, 2024, was 13.8 % and 12.0 % , respectively. The increase in the effective tax rate from the nine months ended September 29, 2024, to the nine months ended September 28, 2025, is primarily attributable to decreases in benefits related to reserves for uncertain tax positions and tax credits partially offset by an increase in benefit from a projected shift in the geographic distribution of income.

On a quarterly basis, Teradyne evaluates the realizability of the deferred tax assets by jurisdiction and assesses the need for a valuation allowance. As of September 28, 2025, Teradyne believes that it will ultimately realize the deferred tax assets recorded on the condensed consolidated balance sheet. However, should Teradyne believe that it is more-likely-than-not that the deferred tax assets would not be realized, the tax provision would increase in the period in which Teradyne determined that the realizability was not likely. Teradyne considers the probability of future taxable income and historical profitability, among other factors, in assessing the realizability of the deferred tax assets.

As of both September 28, 2025, and December 31, 2024, Teradyne had $ 6.8 million of reserves for uncertain tax positions.

As of September 28, 2025, Teradyne estimates that it is reasonably possible that the balance of unrecognized tax benefits may decrease approximately $ 0.7 million in the next twelve months because of a lapse of statutes of limitation. The estimated decrease relates to U.S. federal research and development credits.

Teradyne recognizes interest and penalties related to income tax matters in income tax expense. As of September 28, 2025, and December 31, 2024, $ 0.3 million and $ 0.3 million, respectively, of interest and penalties were accrued for uncertain tax positions. For the nine months ended September 28, 2025, and September 29, 2024, an expense of $ 0.0 million and a benefit of $ 1.0 million, respectively, was recorded for interest and penalties related to income tax items.

Teradyne qualifies for a tax holiday in Singapore by fulfilling the requirements of an agreement with the Singapore Economic Development Board under which certain headcount and spending requirements must be met, which is scheduled to expire on December 31, 2025. The tax savings due to the tax holiday for the nine months ended September 28, 2025, were $ 7.4 million, or $ 0.05 per diluted share. The tax savings due to the tax holiday for the nine months ended September 29, 2024, were $ 10.2 million, or $ 0.06 per diluted share. Teradyne is working with the Singapore Economic Development Board on a new tax holiday with substantially similar terms to the current agreement.

The Organization for Economic Cooperation and Development (the “OECD”) has introduced a framework to implement a global minimum tax of 15 % for certain multinational companies, referred to as Pillar Two. While it is uncertain whether the United States will enact legislation to adopt Pillar Two, certain countries in which Teradyne operates have enacted Pillar Two legislation, and other countries are in the process of introducing draft Pillar Two legislation. Teradyne is closely monitoring these developments and evaluating the potential future impact on its effective tax rate.

On July 4, 2025, H.R. 1, commonly referred to as the "One Big Beautiful Bill Act" (“OBBBA”), was signed into law, enacting significant changes to U.S. corporate tax law. As of September 28, 2025, the condensed consolidated financial statements were not materially impacted by the OBBBA. Teradyne continues to evaluate the provisions of the OBBBA and will incorporate any necessary adjustments as further guidance becomes available.

27


U. SEGMENT INFORMATION

As of December 31, 2024, Teradyne had two reportable segments (Semiconductor Test and Robotics) and four operating segments (Semiconductor Test, System Test, Wireless Test, and Robotics). E ffective March 2025, Teradyne's Chief Operating Decision Maker ("CODM") (Teradyne's Chief Executive Officer ) place d Regan Mills as President, Product Test, which as of that date included Production Board Test, Defense/Aerospace, and Wireless Test. As noted in 'Note D. Acquisitions' and based on the underlying business activities and established reporting structure, upon acquisition, PIC Testing was aggregated into Product Test. As a result, Teradyne has three reportable segments (Semiconductor Test, Robotics, and Product Test). As of September 28, 2025, each of Teradyne's reportable segments represents an individual operating segment. All prior period disclosures have been recast to conform to the current segment structure and presentation requirements.

The Semiconductor Test segment includes operations related to the design, manufacturing and marketing of semiconductor test products and services inclusive of storage and system level test products. The Robotics segment includes operations related to the design, manufacturing and marketing of collaborative robotic arms and autonomous mobile robots. The Product Test segment includes operations related to the design, manufacturing and marketing of products and services for defense/aerospace test, circuit-board test, wireless test systems, and silicon photonics testing. Each reportable segment has a segment manager who is accountable to and maintains regular contact with Teradyne’s CODM to discuss operating activities, financial results, forecasts, and plans for the segment.

The CODM uses business segment income (loss) before income taxes predominantly in the annual budgeting and forecasting process. The CODM also uses this measure when making decisions about the allocation of operating and capital resources to each segment. The accounting policies of the business segments are the same as those described in Teradyne’s Annual Report on Form 10-K in Note B: “Accounting Policies.”

28


Segment information for the three and nine months ended September 28, 2025, and September 29, 2024, is as follows:

Semiconductor
Test

Robotics

Product Test

Total Reportable Segments

Corporate
and Eliminations

Consolidated

(in thousands)

Three months ended September 28, 2025

Revenues

$

605,867

$

75,087

$

88,256

$

769,210

$

$

769,210

Less:

Cost of revenues

248,971

32,974

32,323

314,268

314,268

Engineering and development

85,331

14,395

13,106

112,832

112,832

Selling and marketing

58,983

23,400

12,703

95,086

95,086

General and administrative

27,161

9,746

6,108

43,015

( 298

)

42,717

Other segment items (1)(2)

34,589

12,139

8,120

54,848

1,359

56,207

Income (loss) before taxes (2)

150,832

( 17,567

)

15,896

149,161

( 1,061

)

148,100

Total assets (3)

1,564,196

739,066

371,793

2,675,055

1,288,676

3,963,731

Property additions

40,341

1,450

4,901

46,692

46,692

Depreciation and amortization expense

22,979

4,615

2,919

30,513

3

30,516

Three months ended September 29, 2024

Revenues

$

568,518

$

88,651

$

80,129

$

737,298

$

$

737,298

Less:

Cost of revenues

223,828

36,367

30,057

290,252

290,252

Engineering and development

74,007

17,438

11,857

103,302

103,302

Selling and marketing

46,332

29,408

12,901

88,641

88,641

General and administrative

23,208

15,292

5,394

43,894

( 1,356

)

42,538

Other segment items (1)(2)

33,722

14,352

6,762

54,836

( 1,255

)

53,581

Income (loss) before taxes (2)

167,421

( 24,206

)

13,158

156,373

2,611

158,984

Total assets (3)

1,360,277

794,277

202,927

2,357,481

1,412,247

3,769,728

Property additions

42,802

6,441

2,598

51,841

51,841

Depreciation and amortization expense

21,278

7,338

1,684

30,300

( 11

)

30,289

Nine months ended September 28, 2025

Revenues

$

1,640,249

$

218,940

$

247,498

$

2,106,687

$

$

2,106,687

Less:

Cost of revenues

658,919

99,421

95,448

853,788

853,788

Engineering and development

247,668

44,319

37,319

329,306

329,306

Selling and marketing

163,270

72,155

36,103

271,528

271,528

General and administrative

79,845

29,490

16,773

126,108

2,383

128,491

Other segment items (1)(2)

88,150

46,832

21,771

156,753

3,137

159,890

Income (loss) before taxes (2)

402,397

( 73,277

)

40,084

369,204

( 5,520

)

363,684

Total assets (3)

1,564,196

739,066

371,793

2,675,055

1,288,676

3,963,731

Property additions

143,666

7,654

10,966

162,286

162,286

Depreciation and amortization expense

69,239

16,624

6,351

92,214

( 7

)

92,207

Nine months ended September 29, 2024

Revenues

$

1,563,204

$

266,552

$

237,240

$

2,066,996

$

$

2,066,996

Less:

Cost of revenues

647,625

108,229

86,984

842,838

842,838

Engineering and development

210,616

49,412

34,546

294,574

294,574

Selling and marketing

138,432

82,809

37,103

258,344

258,344

General and administrative

65,794

40,938

15,758

122,490

398

122,888

Other segment items (1)(2)

92,714

41,263

19,904

153,881

( 56,818

)

97,063

Income (loss) before taxes (2)

408,023

( 56,099

)

42,945

394,869

56,420

451,289

Total assets (3)

1,360,277

794,277

202,927

2,357,481

1,412,247

3,769,728

Property additions

115,041

19,760

5,909

140,710

140,710

Depreciation and amortization expense

62,542

20,896

5,149

88,587

26

88,613

(1)
For each reportable segment, the other segment items category includes equity and variable compensation, acquired intangible assets amortization, inventory step-up, and restructuring and other charges.
(2)
Included in Corporate and Eliminations are interest income, interest expense, net foreign exchange gains (losses), intercompany eliminations, severance charges, pension and postretirement plan actuarial gains (losses), acquisition and divestiture related expenses, ERP implementation related costs, and an expense for the modification of outstanding equity awards.
(3)
Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities, and certain other assets.

29


V. SHAREHOLDERS’ EQUITY

Stock Repurchase Program

In January 2023, Teradyne’s Board of Directors cancelled its January 2021 repurchase program and approved a new repurchase program for up to $ 2.0 billion of common stock. As of January 1, 2023, share repurchases in excess of issuances are subject to a 1 % excise tax, which is included as part of the cost basis of the shares acquired. Teradyne intends to repurchase up to a total of $ 1.0 billion of its common stock in 2025 and 2026 based on market conditions.

During the nine months ended September 28, 2025, Teradyne repurchased 5.1 million shares of common stock for a total cost of $ 523.5 million at an average price of $ 102.01 per share. The cumulative repurchases under the January 2023 repurchase program as of September 28, 2025, were 10.8 million shares of common stock for $ 1,123.4 million at an average price per share of $ 104.21 .

During the nine months ended September 29, 2024, Teradyne repurchased 0.5 million shares of common stock for a total cost of $ 55.1 million at an average price of $ 111.32 per share.

The total cost of shares acquired includes commissions and related excise tax and is recorded as a reduction to retained earnings.

Dividend

Holders of Teradyne’s common stock are entitled to receive dividends when they are declared by Teradyne’s Board of Directors.

In January 2025, May 2025, and August 2025 , Teradyne’s Board of Directors declared a quarterly cash dividend of $ 0.12 per share. Dividend payments for the three and nine months ended September 28, 2025, were $ 19.0 million and $ 57.6 million , respectively.

In January 2024, May 2024, and August 2024 , Teradyne’s Board of Directors declared a quarterly cash dividend of $ 0.12 per share. Dividend payments for the three and nine months ended September 29, 2024, were $ 19.6 million and $ 57.0 million , respectively.

W. SUBSEQUENT EVENTS

On October 28, 2025 the Company announced the appointment of Michelle Turner as Chief Financial Officer, effective November 3, 2025. This leadership change was approved subsequent to the end of the reporting period and will become effective following the filing of this Quarterly Report on Form 10-Q. The appointment does not impact the Company’s financial condition or results of operations as of September 28, 2025.

30


Item 2: Management’s Discussion and Analysis of Financial Condition and Results of Operations

Statements in this Quarterly Report on Form 10-Q which are not historical facts, so called “forward-looking statements,” are made pursuant to the safe harbor provisions of Section 21E of the Securities Exchange Act of 1934, as amended. Investors are cautioned that all forward-looking statements involve risks and uncertainties, including those detailed in our filings with the Securities and Exchange Commission. See also Part II, Item 1A of this Quarterly Report on Form 10-Q and Part I, Item 1A “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2024. Readers are cautioned not to place undue reliance on these forward-looking statements which reflect management’s analysis only as of the date hereof. We assume no obligation to update these forward-looking statements to reflect actual results or changes in factors or assumptions affecting forward-looking statements, except as may be required by law.

Overview

We are a leading global provider of automated test equipment and robotics products. Our automated test systems are used to test semiconductors, wireless products, data storage, silicon photonics, and complex electronics systems in many industries including consumer electronics, wireless, automotive, industrial, computing, communications, and aerospace and defense industries. Our robotics product offerings consist primarily of collaborative robotic arms and autonomous mobile robots used by global manufacturing, logistics and industrial customers to improve quality and increase manufacturing and material handling efficiency, while reducing costs. In the first quarter of 2025, we identified opportunities for operational synergies amongst our production board test, defense and aerospace, and wireless test businesses leading to the creation of the Product Test division as a new segment effective March 2025. Our automated test equipment and robotics products and services include:

semiconductor test (“Semiconductor Test”) systems;
robotics (“Robotics”) products; and
product test ("Product Test") systems, which includes defense/aerospace ("Defense/Aerospace") test instrumentation and systems, circuit-board test and inspection ("Production Board Test") systems, wireless test systems ("Wireless Test"), and photonic integrated circuit ("PIC") test solutions.

The market for our test products is concentrated with a limited number of significant customers accounting for a substantial portion of the purchases of test equipment. A few customers drive significant demand for our products both through direct sales and sales to the customer’s supply partners. We expect that sales of our test products will continue to be concentrated with a limited number of significant customers for the foreseeable future.

Artificial Intelligence applications and data center power demand drove strong third quarter performance with our customers accelerating development and ramping production for a wide range of devices. We expect this acceleration to continue and even expand into the fourth quarter and into 2026 and are currently investing in sales, engineering, and support to pursue these, and additional, market opportunities in Semiconductor Test. Robotics revenue in the third quarter was flat with second quarter sales due to ongoing business environment challenges. Our focus in the Robotics segment remains on operating expense management and our channel transformation strategy as we transition toward serving large direct customers and building a Robotics organization that can grow profitably over the mid-term.

On May 31, 2025, we acquired privately held Quantifi Photonics ("Quantifi"), a leader in PIC test solutions for a total purchase price of approximately $127.2 million. This acquisition enables the delivery of scalable PIC test solutions and is included in our Product Test segment. Over time, we also intend to leverage the engineering expertise and technology to enhance functionality and create additional differentiation in our Semiconductor Test business, specifically with integration into our UltraFlexPlus platform.

On January 31, 2025, we acquired Infineon Technologies AG's ("Infineon") automated test equipment technology and associated development team ("AET") based in Regensburg, Germany for a total purchase price of 17.6 million Euros, equivalent to $18.3 million. AET adds resources and expertise to our company and strengthens the relationship between Teradyne and this key customer. AET is included in our Semiconductor Test segment.

While revenues in our test businesses are predominantly in U.S. dollars, the majority of our Robotics revenue is denominated in foreign currencies. Strengthening of the U.S. dollar has, and will continue to, negatively affect Robotics revenue throughout 2025.

Our capital allocation plan will continue to be balanced between investing in organic and inorganic growth and returning cash to shareholders through share repurchases and dividends. During the first nine months of 2025 we completed the acquisitions of Quantifi and AET and additionally, we returned $576.3 million to shareholders through $518.7 million of share buybacks and $57.6 million of dividend payments.

31


On July 4, 2025, H.R. 1, commonly referred to as the "One Big Beautiful Bill Act" (“OBBBA”), was signed into law, enacting significant changes to U.S. corporate tax law. The OBBBA modified and made permanent several provisions of the Tax Cuts and Jobs Act, including reductions in scheduled increases for the rate of taxation of foreign income, immediate deductibility of U.S. research and development expenses, and reinstatement of 100% bonus depreciation for qualified property. As of September 28, 2025, the condensed consolidated financial statements were not materially impacted by the OBBBA. Teradyne continues to evaluate the provisions of the OBBBA and will incorporate any necessary adjustments as further guidance becomes available.

While it is difficult to quantify the exact impact, current trade restrictions are limiting our ability to be competitive particularly in certain markets, where other companies are not subjected to the same restrictions. Current tariffs have not had a material impact on our business operations or financial results, however, the global trade environment remains dynamic and subject to change. We continue to monitor developments in international trade policy, including potential changes to tariffs, further export controls, and other regulatory measures that could affect our supply chain, cost structure, or market access.

For information regarding risks associated with import-export control regulations and similar applicable laws and regulations, see Part II - Item 1A "Risk Factors- Risks Related to Legal and Regulatory Compliance" included elsewhere in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024.

Critical Accounting Policies and Estimates

We have identified the policies which are critical to understanding our business and our results of operations. There have been no significant changes during the nine months ended September 28, 2025, to the items disclosed as our critical accounting policies and estimates in Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024.

Critical accounting estimates are complex and may require significant judgment by management. Changes to the underlying assumptions may have a material impact on our financial condition and results of operations. These estimates may change, as new events occur and additional information is obtained. Actual results could differ significantly from these estimates under different assumptions or conditions.

Preparation of Financial Statements and Use of Estimates

The preparation of consolidated financial statements requires management to make estimates and judgments that affect the amounts reported in the financial statements. Actual results may differ significantly from these estimates under different assumptions or conditions.

32


SELECTED RELATIONSHIPS WITHIN THE CONDENSED CONSOLIDATED

STATEMENTS OF OPERATIONS

For the Three Months
Ended

For the Nine Months
Ended

September 28,
2025

September 29,
2024

September 28,
2025

September 29,
2024

Percentage of revenues:

Revenues:

Products

82

%

83

%

81

%

81

%

Services

18

17

19

19

Total revenues

100

100

100

100

Cost of revenues:

Cost of products

35

34

35

34

Cost of services

6

6

7

8

Total cost of revenues (exclusive of acquired intangible
assets amortization shown separately below)

42

41

41

42

Gross profit

58

59

59

58

Operating expenses:

Selling and administrative

22

21

23

22

Engineering and development

16

16

17

16

Acquired intangible assets amortization

1

1

1

Restructuring and other

1

1

1

1

Gain on sale of business

(3

)

Total operating expenses

40

39

42

37

Income from operations

19

21

17

21

Non-operating (income) expense:

Interest income

(1

)

(1

)

(1

)

Interest expense

Other (income) expense, net

1

Income before income taxes and equity in net earnings of affiliate

19

22

17

22

Income tax provision

3

2

2

3

Income before equity in net earnings of affiliate

16

20

15

19

Equity in net earnings of affiliate

(1

)

(0

)

(1

)

(0

)

Net income

16

%

20

%

14

%

19

%

33


Results of Operations

Third Quarter 2025 Compared to Third Quarter 2024

Revenues

Revenues by our reportable segments were as follows:

For the Three Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Semiconductor Test

$

605.9

$

568.5

$

37.4

Product Test

88.3

80.1

8.2

Robotics

75.1

88.7

(13.6

)

$

769.2

$

737.3

$

31.9

The increase in Semiconductor Test revenues of $37.4 million, or 6.6%, was driven primarily by higher sales in compute related to artificial intelligence applications. The increase in Product Test revenues of $8.2 million, or 10.2%, was driven by higher Defense/Aerospace sales. The decrease in Robotics revenues of $13.6 million, or 15.3%, was primarily due to lower sales of collaborative robotic arms.

Revenues by country as a percentage of total revenues were as follows (1):

For the Three Months
Ended

September 28,
2025

September 29,
2024

Taiwan

37

%

26

%

China

17

13

United States

12

12

Korea

12

26

Europe

7

8

Malaysia

5

2

Philippines

3

2

Thailand

3

2

Japan

1

2

Singapore

1

2

Rest of World

2

5

100

%

100

%

(1)
Revenues attributable to a country are based on location of customer site.

Gross Profit

Our gross profit was as follows:

For the Three Months
Ended

September 28,
2025

September 29,
2024

Dollar/Point
Change

(in millions)

Gross profit

$

449.3

$

436.5

$

12.8

Percent of total revenues

58.4

%

59.2

%

(0.8

)

Gross profit as a percent of revenue decreased by 0.8 points, primarily due to product mix in Semiconductor Test.

34


Selling and Administrative

Selling and administrative expenses were as follows:

For the Three Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Selling and administrative

$

169.1

$

157.6

$

11.5

Percent of total revenues

22.0

%

21.4

%

The increase of $11.5 million in selling and administrative expenses was primarily driven by strategic investments in Semiconductor Test.

Engineering and Development

Engineering and development expenses were as follows:

For the Three Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Engineering and development

$

124.8

$

117.5

$

7.3

Percent of total revenues

16.2

%

15.9

%

The increase of $7.3 million in engineering and development expenses was primarily driven by strategic investments in Semiconductor Test.

Restructuring and Other

During the three months ended September 28, 2025, we recorded $4.8 million of severance charges, $3.6 million of which is related to headcount reductions in Robotics. During the three months ended September 28, 2025, we made $1.1 million of Robotics severance payments. We expect all Robotics severance payments to be made prior to the end of the third quarter of 2026.

During the three months ended September 29, 2024, we recorded restructuring and other charges primarily related to $1.3 million of severance charges related to headcount reductions principally in Robotics.

Interest and Other

For the Three Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Interest income

$

(3.2

)

$

(5.1

)

$

1.9

Interest expense

1.3

0.8

$

0.5

Other (income) expense, net

(0.9

)

(2.7

)

$

1.8

The decrease in interest income was driven primarily by lower cash balances in the current period.

35


Income (Loss) Before Income Taxes and Equity in Net Earnings of Affiliate

For the Three Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Semiconductor Test

$

150.8

$

167.4

$

(16.6

)

Product Test

15.9

13.2

2.7

Robotics

(17.6

)

(24.2

)

6.6

Corporate and Eliminations (1)

(1.1

)

2.6

(3.7

)

$

148.1

$

159.0

$

(10.9

)

(1)
Included in Corporate and Eliminations are interest income, interest expense, net foreign exchange gains (losses), intercompany eliminations, severance charges, pension and postretirement plan actuarial gains (losses), acquisition and divestiture related expenses, and gain on sale of business.

The decrease in income before income taxes and equity in net earnings of affiliate in Semiconductor Test was driven primarily by product mix and investments in strategic projects partially offset by higher volume. The increase in income before income taxes and equity in net earnings of affiliate in Robotics was primarily due to lower operating expenses primarily as a result of restructuring actions.

Income Taxes

The effective tax rate for the three months ended September 28, 2025, and September 29, 2024, was 15.8% and 7.8%, respectively. The increase in the effective tax rate from the three months ended September 29, 2024, to the three months ended September 28, 2025, is primarily attributable to decreases in benefits related to reserves for uncertain tax positions, tax credits and the international provision of the U.S. Tax Cuts and Jobs Act of 2017. These were partially offset by an increase in benefit from a projected shift in the geographic distribution of income.

Nine Months 2025 Compared to Nine Months 2024

Revenues

Revenues by our reportable segments were as follows:

For the Nine Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Semiconductor Test

$

1,640.2

$

1,563.2

$

77.0

Product Test

247.5

237.2

10.3

Robotics

218.9

266.6

(47.7

)

$

2,106.7

$

2,067.0

$

39.7

The increase in Semiconductor Test revenues of $77.0 million, or 4.9%, was driven primarily by higher sales in mobility and compute related to artificial intelligence applications. The decrease in Robotics revenues of $47.7 million, or 17.9%, was primarily due to lower sales of collaborative robotic arms. The increase in Product Test revenues of $10.3 million, or 4.3%, was primarily due to higher sales in Wireless Test.

36


Revenues by country as a percentage of total revenues were as follows (1):

For the Nine Months
Ended

September 28,
2025

September 29,
2024

Taiwan

33

%

20

%

China

17

11

United States

12

13

Korea

10

28

Europe

7

9

Malaysia

4

2

Philippines

4

2

Singapore

4

2

Japan

2

7

Thailand

2

2

Rest of World

5

4

100

%

100

%

(1)
Revenues attributable to a country are based on location of customer site.

Gross Profit

Our gross profit was as follows:

For the Nine Months
Ended

September 28,
2025

September 29,
2024

Dollar/Point
Change

(in millions)

Gross profit

$

1,237.7

$

1,201.6

$

36.1

Percent of total revenues

58.7

%

58.1

%

0.6

Gross profit as a percent of revenue increased by 0.6 points, primarily due to product mix in Semiconductor Test.

Selling and Administrative

Selling and administrative expenses were as follows:

For the Nine Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Selling and administrative

$

484.2

$

461.3

$

22.9

Percent of total revenues

23.0

%

22.3

%

The increase of $22.9 million in selling and administrative expenses was primarily due to higher spending in Semiconductor Test partially offset by lower spending in Robotics.

Engineering and Development

Engineering and development expenses were as follows:

For the Nine Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Engineering and development

$

361.3

$

332.5

$

28.8

Percent of total revenues

17.2

%

16.1

%

37


The increase of $28.8 million in engineering and development expenses was primarily due to higher spending in Semiconductor Test partially offset by lower spending in Robotics.

Restructuring and Other

During the nine months ended September 28, 2025, we recorded $18.5 million of severance charges, $13.5 million of which is related to the Robotics restructuring which impacted approximately 150 employees, $2.2 million of which is related to Product Test and $1.4 million of which is related to Semiconductor Test. During the nine months ended September 28, 2025, we made $9.2 million of Robotics severance payments. We expect all Robotics severance payments to be made prior to the end of the third quarter of 2026. Additionally, we recorded $2.0 million of acquisition and divestiture expenses related primarily to the Quantifi Acquisition and $1.5 million of charges related to lease terminations.

During the nine months ended September 29, 2024, we recorded restructuring and other charges primarily related to $5.3
million of severance and other charges, related to headcount reductions of 87 people primarily in Robotics and Semiconductor Test,
which included charges related to a voluntary early retirement program for employees meeting certain conditions, and $2.2 million of
acquisition and divestiture expenses related to the Technoprobe transactions.

Gain on Sale of Business

During the nine months ended September 29, 2024, we recorded a gain of $57.5 million associated with the sale of DIS to Technoprobe.

Interest and Other

For the Nine Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Interest income

$

(12.6

)

$

(19.7

)

$

7.1

Interest expense

2.9

3.0

(0.1

)

Other (income) expense, net

2.9

5.6

(2.7

)

Interest income decreased by $7.1 million primarily due to lower cash balances. In the period ended September 29, 2024, other (income) expense, net included the change in value of our call option purchased in connection with the acquisition of Technoprobe. The call option expired on May 23, 2024.

Income (Loss) Before Income Taxes and Equity in Net Earnings of Affiliate

For the Nine Months
Ended

September 28,
2025

September 29,
2024

Dollar
Change

(in millions)

Semiconductor Test

$

402.4

$

408.0

$

(5.6

)

Product Test

40.1

42.9

(2.8

)

Robotics

(73.3

)

(56.1

)

(17.2

)

Corporate and Eliminations (1)

(5.5

)

56.4

(61.9

)

$

363.7

$

451.3

$

(87.6

)

(1)
Included in Corporate and Eliminations are gain on sale of business, interest income, interest expense, net foreign exchange gains (losses), intercompany eliminations, severance charges, pension and postretirement plan actuarial gains (losses), acquisition and divestiture related expenses, and gain on sale of business.

The decrease in income before income taxes and equity in net earnings of affiliate in Semiconductor Test was driven primarily by higher spending in selling and administrative and engineering and development, partially offset by higher sales in mobility and compute for artificial intelligence applications. The decrease in income before income taxes and equity in net earnings of affiliate in Robotics was primarily due to lower sales of collaborative robotic arms, partially offset by lower operating expenses. The decrease in income before income taxes and equity in net earnings of affiliate in Product Test was primarily due to strategic investments.

38


Income Taxes

The effective tax rate for the nine months ended September 28, 2025, and September 29, 2024, was 13.8% and 12.0%, respectively. The increase in the effective tax rate from the nine months ended September 29, 2024, to the nine months ended September 28, 2025, is primarily attributable to decreases in benefits related to reserves for uncertain tax positions and tax credits partially offset by an increase in benefit from a projected shift in the geographic distribution of income.

Contractual Obligations

There have been no changes outside of the ordinary course of business to our contractual obligations as disclosed in our Annual Report on Form 10-K for the year ended December 31, 2024.

Liquidity and Capital Resources

Our cash, cash equivalents and marketable securities balances decreased by $296.4 million in the nine months ended September 28, 2025, to $427.4 million.

Operating activities during the nine months ended September 28, 2025, provided cash of $392.8 million. Changes in operating assets and liabilities used cash of $48.6 million due to a $169.0 million increase in operating assets and a $120.5 million increase in operating liabilities.

The increase in operating assets was primarily due to increases in accounts receivable, inventories, and prepayments and other assets of $111.8 million, $34.6 million, and $22.6 million, respectively.

The increase in operating liabilities was due to increases in accounts payable and other liabilities and in deferred revenue and customer advances of $121.4 million and $25.7 million, respectively, partially offset by decreases in income taxes and retirement plans of $19.7 million and $7.0 million, respectively.

Investing activities during the nine months ended September 28, 2025, used cash of $307.7 million due to $161.1 million used for the purchase of property, plant & equipment, $144.4 million used for the acquisition of businesses, $27.5 million used for the purchase of marketable securities, and $25.5 million used for the purchase of investments in businesses, partially offset by $41.6 million and $9.2 million in proceeds from the maturities and sales of marketable securities, respectively.

Financing activities during the nine months ended September 28, 2025, consumed cash of $361.4 million due to $518.7 million used for the repurchase of 5.1 million shares of common stock at an average price of $102.01 per share, $57.6 million utilized for dividend payments and $15.3 million used for payment related to net settlements of employee stock compensation awards, partially offset by $200.0 million from borrowings on our revolving credit facility and $30.1 million from the issuance of common stock under employee stock purchase and stock option plans.

Operating activities during the nine months ended September 29, 2024, provided cash of $389.6 million. Changes in operating assets and liabilities used cash of $75.8 million due to a $7.3 million decrease in operating assets and a $83.1 million decrease in operating liabilities.

The decrease in operating assets was primarily due to decreases in other assets and inventory of $61.4 million and $11.1 million,
respectively, partially offset by a $65.3 million increase in accounts receivable, driven by higher sales in the third quarter.

The decrease in operating liabilities was due to a $32.3 million decrease in accrued employee compensation, $25.9 million
decrease in accounts payable, $18.9 million decrease in income taxes, $4.2 million decrease in retirement plans, and $5.5 million
decrease in accrued other, partially offset by a $3.6 million increase in deferred revenue and customer advances.

Investing activities during the nine months ended September 29, 2024, used cash of $554.9 million due to $527.1 million used
for the purchases of investment, $140.7 million used for the purchase of property, plant and equipment, $35.1 million used for the
purchase of marketable securities, partially offset by $90.3 million in proceeds from the sale of a business, $23.6 million and $33.2
million in proceeds from the sales and maturities and marketable securities, respectively, and $0.9 million in proceeds from life
insurance.

Financing activities during the nine months ended September 29, 2024, used cash of $88.6 million due to $185.0 million used
for proceeds from borrowings on revolving credit facility of which $185.0 million in payments were paid back in full during the
quarter, $56.9 million used for dividend payment, $55.1 million used for the repurchase of 0.5 million shares of common stock at an

39


average price of $111.32 per share and $13.8 million used for payment related to net settlements of employee stock compensation
awards, partially offset by $37.3 million from the issuance of common stock under employee stock purchase and stock option plans.

In January 2025, May 2025 and August 2025, our Board of Directors declared a quarterly cash dividend of $0.12 per share. Dividend payments for the three and nine months ended September 28, 2025, were $19.0 million and $57.6 million, respectively.

In January 2024, May 2024, and August 2024, our Board of Directors declared a quarterly cash dividend of $0.12 per share. Dividend payments for the three and nine months ended September 29, 2024, were $19.6 million and $57.0 million, respectively.

During the nine months ended September 28, 2025, we repurchased 5.1 million shares of common stock for $518.7 million, which excludes related excise tax, at an average price of $102.01 per share. We intend to repurchase up to $1.0 billion of common stock in 2025 and 2026, subject to market conditions. The cumulative repurchases under the 2023 repurchase program as of September 28, 2025, were 10.8 million shares of common stock for $1,113.8 million, which excludes related excise tax, at an average price per share of $104.21. During the nine months ended September 29, 2024, we repurchased 0.5 million shares of common stock for $55.1 million, which excludes related excise tax, at an average price of $111.32 per share.

While we have previously declared a quarterly cash dividend and authorized a share repurchase program, we may reduce or eliminate the cash dividend or share repurchase program in the future. Cash dividends and stock repurchases are subject to the discretion of our Board of Directors, which will consider, among other things, our earnings, capital requirements and financial condition.

On May 1, 2020, we entered into a credit agreement (the "Credit Agreement") providing a three-year, senior secured revolving credit facility of $400.0 million. On December 10, 2021, the Credit Agreement was amended to extend the senior secured revolving credit facility to December 10, 2026. On October 5, 2022, the Credit Agreement was amended to increase the amount of the credit facility to $750.0 million from $400.0 million. On November 7, 2023, the Credit Agreement was amended to allow for the purchase of the shares of Technoprobe. On September 4, 2025, and September 19, 2025, we borrowed a combined $200.0 million under the Credit Agreement to fund out capital allocation strategy. As of October 30, 2025, there is $250.0 million outstanding from the Credit Facility.

We believe our cash, cash equivalents, marketable securities and senior secured revolving credit facility will be sufficient to pay our quarterly dividend and meet our working capital and expenditure needs for at least the next twelve months. Inflation has not had a significant long-term impact on earnings. As of September 28, 2025, we were in compliance with all covenants under the Credit Agreement.

Equity Compensation Plans

In addition to our 1996 Employee Stock Purchase Program as discussed in Note M: “Stock-Based Compensation” in our 2024 Annual Report on Form 10-K, we have a 2006 Equity and Cash Compensation Incentive Plan (the “2006 Equity Plan”).

The purpose of the 1996 Employee Stock Purchase Plan is to encourage stock ownership by all eligible employees of Teradyne. The purpose of the 2006 Equity Plan is to provide equity ownership and compensation opportunities in Teradyne to our employees, officers and directors. Both plans were approved by our shareholders.

Recently Issued Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09 – “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” , which requires expanded disclosures relating to the tax rate reconciliation, income taxes paid, income (loss) before income tax expense (benefit) and income tax expense (benefit), requiring a greater disaggregation of information for each. The provisions of ASU 2023-09 are effective for fiscal years beginning after December 15, 2024. We will apply the amendments in this update on a prospective basis. This ASU will have no impact on results of operations, cash flows or financial condition.

In November 2024, the FASB issued ASU 2024-03- "Income Statement - Reporting Comprehensive Income -Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses" , which requires disclosure of additional expense information on an annual and interim basis, including the amounts of inventory purchases, employee compensation, depreciation and intangible amortization included within each income statement expense caption. This standard is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The amendments in this update should be applied on a prospective basis, but retrospective application is permitted. We are currently evaluating the impact of this new standard.

40


In July 2025, the FASB issued ASU 2025-05 - "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets" , which introduces a practical expedient related to the estimation of expected credit losses for current accounts receivable and current contract assets that arise from transactions accounted for under ASC 606. The practical expedient permits all entities to assume that current conditions as of the balance sheet date do not change for the remaining life of the asset. This standard is effective for fiscal years beginning after December 15, 2025, with early adoption permitted. The amendments in this update should be applied on a prospective basis, but retrospective application is permitted. We are currently evaluating the impact of this new standard and do not expect a material impact on the financial statements and related disclosures.

Item 3: Quantitative and Qualitative Disclosures about Market Risks

For “Quantitative and Qualitative Disclosures about Market Risk” affecting Teradyne, see Part 2 Item 7A, “Quantitative and Qualitative Disclosures about Market Risks,” in our Annual Report on Form 10-K filed with the SEC on February 20, 2025. There were no material changes in our exposure to market risk from those set forth in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024.

Item 4: Controls and Procedures

As of the end of the period covered by this report, our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures pursuant to Rule 13a-15(b) or Rule 15d-15(f) promulgated under the Exchange Act. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of the end of the period covered by this report, our disclosure controls and procedures were effective in ensuring that material information required to be disclosed in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, including ensuring that such material information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

There have been no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the three months ended September 28, 2025, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

41


PART II. OTHER INFORMATION

Item 1: Legal Proceedings

We are subject to various legal proceedings and claims which have arisen in the ordinary course of business such as, but not limited to, patent, employment, commercial and environmental matters. Teradyne believes that it has meritorious defenses against all pending claims and intends to vigorously contest them. While it is not possible to predict or determine the outcomes of any pending claims or to provide possible ranges of losses that may arise, Teradyne believes the potential losses associated with all of these actions are unlikely to have a material adverse effect on its business, financial position or results of operations.

Item 1A: Risk Factors

In addition to other information set forth in this Form 10-Q, including the risk discussed below, you should carefully consider the factors discussed in Part I, “Item 1A: Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on February 20, 2025, which could materially affect our business, financial condition or future results. The risk factors described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, remain applicable to our business.

The risks described in our Annual Report on Form 10-K are not the only risks that we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or operating results.

42


Item 2: Unregistered Sales of Equity Securities and Use of Proceeds

In January 2023, Teradyne’s Board of Directors cancelled our 2021 repurchase program and approved a new repurchase program for up to $2.0 billion of common stock. During the nine months ended September 28, 2025, we repurchased 5.1 million shares of common stock for a total cost of $523.5 million at an average price of $102.01 per share. We record share repurchases at cost, which includes broker commissions and related excise taxes. During the nine months ended September 29, 2024, we repurchased 0.5 million shares of common stock for $55.1 million at an average price of $111.32 per share.

The following table includes information with respect to repurchases we made of our common stock during the three months ended September 28, 2025, (in thousands except per share price):

Period

Total
Number of
Shares
(or Units)
Purchased

Average
Price Paid per
Share (or Unit)

Total Number of
Shares (or Units)
Purchased as Part of
Publicly Announced
Plans or Programs

Maximum Number
(or Approximate Dollar
Value) of Shares (or
Units) that may Yet Be
Purchased Under the
Plans or Programs (2)

June 30, 2025 - July 27, 2025

368

$

93.99

367

$

1,088,262

July 28, 2025 - August 24, 2025

344

$

106.17

342

$

1,052,245

August 25, 2025 - September 28, 2025

1,463

$

119.91

1,463

$

876,589

2,175

(1)

113.35

(1)

2,172

(1)
Includes approximately three thousand shares at an average price of $104.76 withheld from employees for the payment of taxes.
(2)
As of January 1, 2023, share repurchases net of share issuances are subject to a 1% excise tax under the Inflation Reduction Act. Excise tax incurred is included as part of the cost basis of shares repurchased in the Condensed Consolidated Statements of Convertible Common Shares and Stockholders’ Equity.

We satisfy U.S. federal and state minimum withholding tax obligations due upon the vesting and the conversion of restricted stock units into shares of our common stock, by automatically withholding from the shares being issued, a number of shares with an aggregate fair market value on the date of such vesting and conversion that would satisfy the minimum withholding amount due.

Item 4: Mine Safety Disclosures

Not Applicable

43


Item 5: Other Information

10b 5-1 Trading Plans

Our officers (as defined in Rule 16a-1(f) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) (“Section 16 Officers”) and directors from time to time enter into contracts, instructions or written plans for the purchase or sale of our securities that are intended to satisfy the conditions specified in Rule 10b5-1(c) under the Exchange Act for an affirmative defense against liability for trading in securities on the basis of material nonpublic information. We refer to these contracts, instructions, and written plans as “Rule 10b5-1 trading plans” and each one as a “Rule 10b5-1 trading plan.” During our fiscal quarter ended September 28, 2025, no Section 16 Officers or directors adopted , modified or terminated Rule 10b5-1 trading plans .

44


45


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.

TERADYNE, INC.

Registrant

/s/ S ANJAY M EHTA

Sanjay Mehta

Vice President,

Chief Financial Officer and Treasurer

(Duly Authorized Officer

and Principal Financial Officer)

October 30, 2025

46


TABLE OF CONTENTS