AEE 10-K Annual Report Dec. 31, 2023 | Alphaminr
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AEE 10-K Fiscal year ended Dec. 31, 2023

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AMEREN CORP
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TABLE OF CONTENTS
Part IItem 1. BusinessItem 1A. Risk FactorsItem 1B. Unresolved Staff CommentsItem 1C. CybersecurityItem 2. PropertiesItem 3. Legal ProceedingsItem 4. Mine Safety DisclosuresPart IIItem 5. Market For Registrants Common Equity, Related Stockholder Matters, and Issuer Purchases Of Equity SecuritiesItem 6. (reserved)Item 7. Management S Discussion and Analysis Of Financial Condition and Results Of OperationsItem 7A. Quantitative and Qualitative Disclosures About Market RiskItem 8. Financial Statements and Supplementary DataNote 1 Summary Of Significant Accounting PoliciesNote 2 Rate and Regulatory MattersNote 3 Property, Plant, and Equipment, NetNote 4 Short-term Debt and LiquidityNote 5 Long-term Debt and Equity FinancingsNote 6 Other Income, NetNote 7 Derivative Financial InstrumentsNote 8 Fair Value MeasurementsNote 9 Callaway Energy CenterNote 10 Retirement BenefitsNote 11 Stock-based CompensationNote 12 Income TaxesNote 13 Related-party TransactionsNote 14 Commitments and ContingenciesNote 15 Supplemental InformationNote 16 Segment InformationItem 9. Changes in and Disagreements with Accountants on Accounting and Financial DisclosureItem 9A. Controls and ProceduresItem 9B. Other InformationItem 9C. Disclosure Regarding Foreign Jurisdictions That Prevent InspectionsPart IIIItem 10. Directors, Executive Officers, and Corporate GovernanceItem 11. Executive CompensationItem 12. Security Ownership Of Certain Beneficial Owners and Management and Related Stockholder MattersItem 13. Certain Relationships and Related Transactions and Director IndependenceItem 14. Principal Accountant Fees and ServicesPart IVItem 15. Exhibits and Financial Statement SchedulesNote 1 Basis Of PresentationNote 2 Short-term Debt and LiquidityNote 3 Long-term ObligationsNote 4 Commitments and ContingenciesNote 5 Total Other Expense, NetItem 16. Form 10-k Summary

Exhibits

3.1(i) Ameren Restated Articles of Incorporation of Ameren Annex F to Part I of the Registration Statement on Form S-4, File No.33-64165 3.2(i) Ameren Certificate of Amendment to Amerens Restated Articles of Incorporation filed December 14, 1998 1998 Form 10-K, Exhibit 3(i),FileNo.1-14756 3.3(i) Ameren Certificate of Amendment to Amerens Restated Articles of Incorporation filed April21, 2011 April 21, 2011 Form 8-K, Exhibit 3(i),FileNo.1-14756 3.4(i) Ameren Certificate of Amendment to Amerens Restated Articles of Incorporation filed December 18, 2012 December 18, 2012 Form 8-K, Exhibit 3.1(i),FileNo.1-14756 3.5(i) Ameren Missouri Restated Articles of Incorporation of Ameren Missouri 1993 Form 10-K, Exhibit 3(i),FileNo.1-2967 3.6(i) Ameren Illinois Restated Articles of Incorporation of Ameren Illinois 2010 Form 10-K, Exhibit 3.4(i),FileNo.1-3672 3.7(ii) Ameren By-Laws of Ameren, as amended October 8, 2021 October 12, 2021 Form 8-K, Exhibit 3.1,File No.1-14756 3.8(ii) Ameren Missouri Bylaws of Ameren Missouri, as amended February 19, 2021 2020 Form 10-K, Exhibit 3.8(ii), File No. 1-2967 3.9(ii) Ameren Illinois Bylaws of Ameren Illinois, as amended February 19, 2021 2020 Form 10-K, Exhibit 3.9(ii), File No. 1-3672 4.2 Ameren First Supplemental Indenture to Ameren Senior Indenture dated as of May 19, 2008 June 30, 2008 Form 10-Q, Exhibit 4.1,FileNo.1-14756 4.3 Ameren Ameren Indenture Company Order, dated November 24, 2015,establishing the 3.65% Senior Notes due 2026 (including the global note) November 24, 2015 Form 8-K, Exhibits 4.3 and 4.5, File No. 1-14756 4.4 Ameren Ameren Indenture Company Order, dated September 16, 2019,establishing the 2.50% Senior Notes due 2024(including thegllobal note) September 16, 2019 Form 8-K, Exhibits 4.3 and 4.4, File No. 1-14756 4.5 Ameren Ameren Indenture Company Order, dated April 3, 2020,establishing the 3.50% Senior Notes due 2031(including the global note) April 3, 2020 Form 8-K, Exhibits 4.3 and 4.4, File No. 1-14756 4.6 Ameren Ameren Indenture Company Order, dated March 5, 2021, establishing the 1.75% Senior Notes due 2028(including the global note) March 5, 2021 Form 8-K, Exhibits 4.3 and 4.4, File No. 1-14756 4.7 Ameren Ameren Indenture Company Order, dated November 18, 2021, establishing the 1.95% Senior Notes due 2027(including the global note) November 18, 2021 Form 8-K, Exhibits 4.3 and 4.4, File No. 1-14756 4.8 Ameren Ameren Indenture Company Order, dated November 20, 2023, establishing the 5.70% Senior Notes due 2026 (including the global note) November 20, 2023 Form 8-K, Exhibits 4.3 and 4.4, File No. 1-14756 4.9 Ameren Ameren Indenture Company Order, dated December 21, 2023, establishing the 5.00% Senior Notes due 2029 (including the global note) December 21, 2023 Form 8-K, Exhibits 4.3 and 4.4, File No. 1-14756 4.10 Ameren Note Purchase Agreement, dated June 22, 2017, between Ameren Transmission Company of Illinois and the several purchasers named therein. June 26, 2017 Form 8-K, Exhibit 4.1, File No. 1-14756 4.11 Ameren Note Purchase Agreement, dated as of November 16, 2021, between Ameren Transmission Company of Illinois and the several purchasers named therein. 2021 Form 10-K, Exhibit 4.9, File No. 1-14756 4.13 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated as of July 1, 1956 Exhibit 4.22, File No. 333-222108 4.14 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated as of April 1, 1971 Exhibit 4.23, File No. 333-222108 4.15 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated as of February 1, 1974 Exhibit 4.24, File No. 333-222108 4.16 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated as of July 7, 1980 Exhibit 4.25, File No. 333-222108 4.17 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated as of October 1, 1993 1993 Form 10-K, Exhibit 4.8,FileNo.1-2967 4.25 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated July1, 2005 relative to Series II July 21, 2005 Form 8-K, Exhibit 4.4,FileNo.1-2967 4.26 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated March 1, 2009 relative to Series NN March 23, 2009 Form 8-K, Exhibit 4.5,FileNo.1-2967 4.27 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated May 15, 2012 Exhibit 4.45, File No. 333-182258 4.28 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated September 1, 2012 relative to Series OO September 11, 2012 Form 8-K, Exhibit 4.4,File No. 1-2967 4.29 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated April 1, 2014 relative to Series PP April 4, 2014 Form 8-K, Exhibit 4.5,File No. 1-2967 4.30 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated March 15, 2015 relative to Series QQ April 6, 2015 Form 8-K, Exhibit 4.5, File No. 1-2967 4.31 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated June 1, 2017 relative to Series RR June 15, 2017 Form 8-K, Exhibit 4.5, File No. 1-2967 4.32 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated April 1, 2018 for 4.000% First Mortgage Bonds due 2048 April 6, 2018 Form 8-K, Exhibit 4.2, File No. 1-2967 4.33 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated March 1, 2019, for 3.50% First Mortgage Bonds due 2029 March 6, 2019 Form 8-K, Exhibit 4.2, File No. 1-2967 4.34 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated September 15, 2019, for 3.25% First Mortgage Bondsdue 2049 October 1, 2019 Form 8-K, Exhibit 4.2, File No. 1-2967 4.35 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated March 1, 2020, for 2.95% First Mortgage Bonds due 2030 March 20, 2020 Form 8-K, Exhibit 4.2, File No. 1-2967 4.36 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated October 1, 2020, for 2.625% First Mortgage Bonds due 2051 October 9, 2020 Form 8-K, Exhibit 4.2, File No. 1-2967 4.37 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated June 1, 2021, for 2.15% First Mortgage Bonds due 2032 June 22, 2021 Form 8-K, Exhibit 4.2, File No. 1-2967 4.38 AmerenAmeren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated March 1, 2022, for 3.90% First Mortgage Bonds due 2052 April 1, 2022 Form 8-K, Exhibit 4.2, File No. 1-2967 4.39 Ameren Ameren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated February 1, 2023, for 5.45% First Mortgage Bonds due 2053 March 13, 2023 Form 8-K, Exhibit 4.2, File No. 1-2967 4.40 Ameren Ameren Missouri Supplemental Indenture to the Ameren Missouri Mortgage dated January 1, 2024, for 5.25% First Mortgage Bonds due 2054 January 9, 2024 Form 8-K, Exhibit 4.2, File No. 1-2967 4.43 AmerenAmeren Missouri Series 1998A Loan Agreement, dated as of September1, 1998, between the Missouri Environmental Authority and Ameren Missouri September 30, 1998 Form 10-Q,Exhibit4.28, File No.1-2967 4.45 AmerenAmeren Missouri Series 1998B Loan Agreement, dated as of September1, 1998, between the Missouri Environmental Authority and Ameren Missouri September 30, 1998 Form 10-Q,Exhibit4.29, File No.1-2967 4.47 AmerenAmeren Missouri Series 1998C Loan Agreement, dated as of September1, 1998, between the Missouri Environmental Authority and Ameren Missouri September 30, 1998 Form 10-Q,Exhibit4.30, File No.1-2967 4.50 AmerenAmeren Missouri First Supplemental Indenture to the Ameren Missouri Indenture, dated as of May 15, 2012 Exhibit 4.48, File No. 333-182258 4.52 AmerenAmeren Missouri Ameren Missouri Indenture Company Order, dated July21, 2005, establishing the 5.30% Senior Secured Notes due 2037(including the global note) July 21, 2005 Form 8-K, Exhibits 4.2 and 4.3, File No.1-2967 4.53 AmerenAmeren Missouri Ameren Missouri Indenture Company Order, dated March20, 2009, establishing the 8.45% Senior Secured Notes due 2039(including the global note) March 23, 2009 Form 8-K, Exhibits 4.2 and 4.3, File No.1-2967 4.54 AmerenAmeren Missouri Ameren Missouri Indenture Company Order, dated September 11, 2012, establishing the 3.90% Senior Secured Notes due 2042(including the global note) September 30, 2012 Form 10-Q, Exhibit 4.1 and September 11, 2012 Form 8-K, Exhibit 4.2, File No.1-2967 4.55 AmerenAmeren Missouri Ameren Missouri Indenture Company Order, dated April 4, 2014, establishing the 3.50% Senior Secured Notes due 2024(including the global note) April 4, 2014 Form 8-K, Exhibits 4.2 and 4.3, File No.1-2967 4.56 AmerenAmeren Missouri Ameren Missouri Indenture Company Order, dated April 6, 2015, establishing the 3.65% Senior Secured Notes due 2045(including the global note) April 6, 2015 Form 8-K, Exhibits 4.2 and 4.3, File No. 1-2967 4.57 AmerenAmeren Missouri Ameren Missouri Indenture Company Order, dated June 23, 2016, requesting authentication of an additional $150,000,000 aggregate principal amount of 3.65% Senior Secured Notes due 2045(including the global note) June 23, 2016 Form 8-K, Exhibits 4.3, and 4.4, File No. 1-2967 4.58 AmerenAmeren Missouri Ameren Missouri Indenture Company Order, dated June 15, 2017, establishing the 2.950% Senior Secured Notes due 2027(including the global note) June 15, 2017 Form 8-K, Exhibits 4.2 and 4.3, File No. 1-2967 4.60 AmerenAmeren Illinois First Supplemental Indenture to the CIPS Indenture, dated as of June 14, 2006 June 19, 2006 Form 8-K, Exhibit 4.2, FileNo.1-3672 4.61 AmerenAmeren Illinois Second Supplemental Indenture to the CIPS Indenture, dated as of March 1, 2010 Exhibit 4.17, File No.333-166095 4.62 AmerenAmeren Illinois Third Supplemental Indenture to the CIPS Indenture, dated as of October 1, 2010 2010 Form 10-K, Exhibit 4.59, FileNo.1-3672 4.63 AmerenAmeren Illinois Ameren Illinois Global Note, dated October1, 2010, representing CIPS Indenture Senior Notes, 6.125% due 2028 2010 Form 10-K, Exhibit 4.60, FileNo.1-3672 4.64 AmerenAmeren Illinois Ameren Illinois Global Note, dated October1, 2010, representing CIPS Indenture Senior Notes, 6.70% Series Secured Notes due 2036 2010 Form 10-K, Exhibit 4.62, FileNo.1-3672 4.65 AmerenAmeren Illinois Indenture, dated as of June 1, 2006, from Ameren Illinois (successor in interest to Central Illinois Light Company) to The Bank of New York Mellon Trust Company, N.A., as successor trustee (CILCO Indenture) June 19, 2006 Form 8-K, Exhibit 4.3, FileNo.1-14756 4.66 AmerenAmeren Illinois First Supplemental Indenture to the CILCO Indenture, dated October 1, 2010 October 7, 2010 Form 8-K, Exhibit 4.1, FileNo.1-3672 4.67 AmerenAmeren Illinois Second Supplemental Indenture to the CILCO Indenture dated as of July 21, 2011 September 30, 2011 Form 10-Q, Exhibit4.1,File No.1-3672 4.68 AmerenAmeren Illinois Third Supplemental Indenture to the CILCO Indenture, dated as of October 15, 2019 September 30, 2019 Form 10-Q, Exhibit 4.2, File No. 1-3672 4.69 AmerenAmeren Illinois CILCO Indenture Company Order, dated June 14, 2006, establishing the 6.70% Senior Secured Notes due 2036 (including the global note) June 19, 2006 Form 8-K, Exhibit 4.6, FileNo.1-14756 4.72 AmerenAmeren Illinois Supplemental Indenture, dated as of October 1, 2010, to Ameren IllinoisMortgage for Series CIPS-AA and CIPS-CC October 7, 2010 Form 8-K, Exhibit 4.9, FileNo.1-3672 4.73 AmerenAmeren Illinois Supplemental Indenture, dated as of January 15, 2011, to Ameren IllinoisMortgage Exhibit 4.78, File No. 333-182258 4.74 AmerenAmeren Illinois Supplemental Indenture, dated as of August 1, 2012, to Ameren IllinoisMortgage for Series EE August 20, 2012 Form 8-K, Exhibit 4.5, FileNo.1-3672 4.75 AmerenAmeren Illinois Supplemental Indenture, dated as of December 1, 2013, to Ameren Illinois Mortgage for Series FF December 10, 2013 Form 8-K, Exhibit 4.5, File No. 1-3672 4.76 AmerenAmeren Illinois Supplemental Indenture, dated as of June 1, 2014, to Ameren Illinois Mortgage for Series GG June 30, 2014 Form 8-K, Exhibit 4.5, File No. 1-3672 4.77 AmerenAmeren Illinois Supplemental Indenture, dated as of December 1, 2014, to Ameren Illinois Mortgage for Series HH December 10, 2014 Form 8-K, Exhibit 4.5, File No. 1-3672 4.78 AmerenAmeren Illinois Supplemental Indenture, dated as of December 1, 2015, to Ameren Illinois Mortgage for Series II December 14, 2015 Form 8-K, Exhibit 4.5, File No. 1-3672 4.79 AmerenAmeren Illinois Supplemental Indenture, dated as of October 25, 2017, to the Ameren Illinois Mortgage September 30, 2017 Form 10-Q, Exhibit 4.1, File No. 1-3672 4.80 AmerenAmeren Illinois Supplemental Indenture, dated as of November 1, 2017, to the Ameren Illinois Mortgage for 3.70% First Mortgage Bonds due 2047 November 28, 2017 Form 8-K, Exhibit 4.2, File No. 1-3672 4.81 AmerenAmeren Illinois Supplemental Indenture, dated as of May 1, 2018, to Ameren Illinois Mortgage for 3.80% First Mortgage Bonds due 2028 May 22, 2018 Form 8-K, Exhibit 4.2, File No. 1-3672 4.82 AmerenAmeren Illinois Supplemental Indenture, dated as of November 1, 2018, to Ameren Illinois Mortgage for 4.50% First Mortgage Bonds due 2049 November 15, 2018 Form 8-K, Exhibit 4.2, File No. 1-3672 4.83 AmerenAmeren Illinois Supplemental Indenture, dated as of October 15, 2019, to Ameren Illinois Mortgage for First Mortgage Bonds, Senior Notes Series CILCO-AA September 30, 2019 Form 10-Q, Exhibit 4.3, File No. 1-3672 4.84 AmerenAmeren Illinois Supplemental Indenture, dated as of November 1, 2019, to the Ameren Illinois Mortgage for 3.25% First Mortgage Bonds due 2050 November 26, 2019 Form 8-K, Exhibit 4.2, File No. 1-3672 4.85 AmerenAmeren Illinois Supplemental Indenture, dated as of December 15, 2019, to the Ameren Illinois Mortgage 2019 Form 10-K, Exhibit 4.79, File No. 1-3672 4.86 AmerenAmeren Illinois Supplemental Indenture, dated as of November 1, 2020, to Ameren Illinois Mortgage for 1.55% First Mortgage Bonds due 2030 November 23, 2020 Form 8-K, Exhibit 4.2, File No. 1-3672 4.87 AmerenAmeren Illinois Supplemental Indenture, dated as of June 1, 2021, to Ameren Illinois Mortgage for 0.375% First Mortgage Bonds due 2023 and 2.90% First Mortgage Bonds due 2051 June 29, 2021 Form 8-K, Exhibit 4.2, File No. 1-3672 4.88 AmerenAmeren Illinois Supplemental Indenture, dated as of August 1, 2022, to Ameren Illinois Mortgage for 3.85% First Mortgage Bonds due 2032 August 29, 2022 Form 8-K, Exhibit 4.2, File No. 1-3672 4.89 AmerenAmeren Illinois Supplemental Indenture, dated as of November 1, 2022, to Ameren Illinois Mortgage for 5.90% First Mortgage Bonds due 2052 November 22, 2022 Form 8-K, Exhibit 4.2, File No. 1-3672 4.90 Ameren Ameren Illinois Supplemental Indenture, dated as of May 1, 2023, to Ameren Illinois Mortgage for 4.95% First Mortgage Bonds due 2033 May 31, 2023 Form 8-K, Exhibit 4.2, File No. 1-3672 4.91 AmerenAmeren Illinois Indenture, dated as of June1, 2006, from Ameren Illinois (successor in interest to Illinois Power Company) to The Bank of New York Mellon Trust Company, N.A., as successor trustee (Ameren IllinoisIndenture) June19, 2006 Form 8-K, Exhibit 4.4, FileNo.1-14756 4.92 AmerenAmeren Illinois First Supplemental Indenture, dated as of October 1, 2010, to the Ameren IllinoisIndenture for Series CIPS-AA and CIPS-CC October 7, 2010 Form 8-K, Exhibit 4.5, FileNo.1-14756 4.93 AmerenAmeren Illinois Second Supplemental Indenture to the Ameren IllinoisIndenture dated as of July21, 2011 September 30, 2011 Form 10-Q, Exhibit 4.2, File No.1-3672 4.94 AmerenAmeren Illinois Third Supplemental Indenture to the Ameren Illinois Indenture dated as of May 15, 2012 Exhibit 4.83, File No. 333-182258 4.95 AmerenAmeren Illinois Fourth Supplemental Indenture to the Ameren Illinois Indenture, dated as of October 15, 2019 September 30, 2019 Form 10-Q, Exhibit 4.4, File No. 1-3672 4.96 AmerenAmeren Illinois Ameren Illinois Indenture Company Order dated December 10, 2013, establishing the 4.80% Senior Secured Notes due 2043(including the global note) December 10, 2013 Form 8-K, Exhibits 4.2 and 4.3, File No. 1-3672 4.97 AmerenAmeren Illinois Ameren Illinois Indenture Company Order dated June 30, 2014, establishing the 4.30% Senior Secured Notes due 2044(including the global note) June 30, 2014 Form 8-K, Exhibits 4.2 and 4.3, File No. 1-3672 4.98 AmerenAmeren Illinois Ameren Illinois Indenture Company Order dated December 10, 2014, establishing the 3.25% Senior Secured Notes due 2025(including the global note) December 10, 2014 Form 8-K, Exhibits 4.2 and 4.3, File No. 1-3672 4.99 AmerenAmeren Illinois Ameren Illinois Indenture Company Order dated December 14, 2015, establishing the 4.15% Senior Secured Notes due 2046(including the global note) December 14, 2015 Form 8-K, Exhibits 4.2 and 4.3, File No. 1-3672 4.100 AmerenAmeren Illinois Ameren Illinois Indenture Company Order dated December 6, 2016, requesting the authentication of an additional $240,000,000 aggregate principal amount of 4.15% Senior Secured Notes due 2046(including the global note) December 6, 2016 Form 8-K, Exhibits 4.2 and 4.3, File No. 1-3672 4.101 AmerenAmeren Illinois Ameren Illinois Indenture Company Order dated October 30, 2019,establishing Senior Notes Series CILCO-AA (including the global note) September 30, 2019 Form 10-Q, Exhibits 4.5 and 4.6, File No. 1-3672 4.102 Ameren Description of Ameren Securities 2021 Form 10-K, Exhibit 4.98, File No. 1-14756 4.103 Ameren Missouri Description of Ameren Missouri Securities 2021 Form 10-K, Exhibit 4.99, File No. 1-14756 4.104 Ameren Illinois Description of Ameren Illinois Securities 2021 Form 10-K, Exhibit 4.100, File No. 1-14756 10.1 Ameren Companies Fourth Amended Ameren Corporation System Utility Money Pool Agreement, as amended January 30, 2014 June 30, 2015 Form 10-Q, Exhibit 10.1, FileNo.1-14756 10.2 AmerenAmeren Missouri Amended and Restated Credit Agreement, dated as of December 6, 2022, by and among Ameren, Ameren Missouri and JP Morgan Chase Bank, N.A., as agent and the lenders party thereto December 6, 2022 Form 8-K, Exhibit 10.1, File No. 1-2967 10.3 Ameren Ameren Missouri First Amendment,dated as of April 19, 2023, to Amended and Restated Credit Agreement, dated as of December 6, 2022, by and among Ameren, Ameren Missouri and JPMorgan Chase Bank, N.A., as agent and the lenders party thereto August 3, 2023 Form 10-Q, Exhibit 10.1, File No. 1-2967 10.4 AmerenAmeren Illinois Amended and Restated Credit Agreement, dated as of December 6, 2022, by and among Ameren, Ameren Illinois and JP Morgan Chase Bank, N.A., as agent and the lenders party thereto December 6, 2022 Form 8-K, Exhibit 10.2, File No. 1-3672 10.5 Ameren Ameren Illinois First Amendment, dated as of April 19, 2023, to Amended and Restated Credit Agreement, dated as of December 6, 2022, by and among Ameren, Ameren Illinois and JPMorgan Chase Bank, N.A., as agent and the lenders party thereto August 3, 2023 Form 10-Q, Exhibit 10.2, File No. 1-3672 10.6 Ameren *Summary Sheet of Ameren Corporation Non-Management Director Compensation effective as of January 1, 2022 2021 Form 10-K, Exhibit 10.6, File No. 1-14756 10.7 Ameren *Amerens Deferred Compensation Plan for Members of the Board of Directors amended and restated effective January 1, 2009, dated June 13, 2008 June 30, 2008 Form 10-Q, Exhibit 10.3, FileNo.1-14756 10.8 Ameren *Amendment dated October 12, 2009, to Amerens Deferred Compensation Plan for Members of the Board of Directors, effective January 1, 2010 2009 Form 10-K, Exhibit 10.15, FileNo.1-14756 10.9 Ameren *Amendment dated October 14, 2010, to Amerens Deferred Compensation Plan for Members of the Board of Directors 2010 Form 10-K, Exhibit 10.15, FileNo.1-14756 10.10 Ameren *Amerens Deferred Compensation Plan as amended and restated effective January 1, 2023 10.11 Ameren Companies *2020 Ameren Short-Term Incentive Plan 2019 Form 10-K, Exhibit 10.17, File No. 1-14756 10.12 Ameren Companies *2021 Ameren Short-Term Incentive Plan 2020 Form 10-K, Exhibit 10.16, File No. 1-14756 10.13 Ameren Companies *2022 Ameren Short-Term Incentive Plan 2021 Form 10-K, Exhibit 10.16, File No., 1-14756 10.14 Ameren Companies *2023 Ameren Short-Term Incentive Plan 2022 Form 10-K, Exhibit 10.17, File No. 1-14756 10.15 Ameren Companies *2024 Ameren Short-Term Incentive Plan 10.16 Ameren Companies *2021 Base Salary Table for Named Executive Officers 2020 Form 10-K, Exhibit 10.23, File No. 1-14756 10.17 Ameren Companies *2022 Base Salary Table for Named Executive Officers 2021 Form 10-K, Exhibit 10.20, File No. 1-14756 10.18 Ameren Companies *2023 Base Salary Table for Named Executive Officers 2022 Form 10-K, Exhibit 10.21, File No. 1-14756 10.19 Ameren Companies *2024 Base Salary Table for Named Executive Officers 10.20 Ameren Companies *Second Amended and Restated Ameren Corporation Change of Control Severance Plan 2008 Form 10-K, Exhibit 10.37, FileNo.1-14756 10.21 Ameren Companies *First Amendment dated October 12, 2009, to the Second Amended and Restated Ameren Change of Control Severance Plan October 14, 2009 Form 8-K, Exhibit 10.2, File No.1-14756 10.22 Ameren Companies *Revised Schedule I to Second Amended and Restated Ameren Change of Control Severance Plan, as amended 10.23 Ameren Companies *Formula for Determining 2018 Target Performance Share Unit and Restricted Stock Unit Awards to be Issued to Named Executive Officers 2017 Form 10-K, Exhibit 10.24, File No. 1-14756 10.24 Ameren Companies *Formula for Determining 2019 Target Performance Share Unit and Restricted Stock Unit Awards to be Issued to Named Executive Officers 2018 Form 10-K, Exhibit 10.27, File No. 1-14756 10.25 Ameren Companies *Formula for Determining 2020 Target Performance Share Unit and Restricted Stock Unit Awards to be Issued to Named Executive Officers 2019 Form 10-K, Exhibit 10.32, File No. 1-14756 10.26 Ameren Companies *Formula for Determining 2021 Target Performance Share Unit and Restricted Stock Unit Awards to be Issued to Named Executive Officers 2020 Form 10-K, Exhibit 10.33, File No. 1-14756 10.27 Ameren Companies Formula for Determining 2022 Target Performance Share Unit and Restricted Stock Unit Awards to be Issued to Named Executive Officers 2021 Form 10-K, Exhibit 10.30, File No. 1-14756 10.28 Ameren Companies *Formula for Determining 2023 Target Performance Share Unit and Restricted Stock Unit Awards to be Issued to Named Executive Officers 2022 Form 10-K, Exhibit 10.31, File No. 1-14756 10.29 Ameren Companies *Formula for Determining 2024 Target Performance Share Unit and Restricted Stock Unit Awards to be Issued to Named Executive Officers 10.30 Ameren Companies *Ameren Corporation 2014 Omnibus Incentive Compensation Plan Exhibit 99, File No. 333-196515 10.31 Ameren Companies *Form of Performance Share Unit Award Agreement for Awards Issued in 2018 pursuant to 2014 Omnibus Incentive Compensation Plan December 13, 2017 Form 8-K, Exhibit 10.1, File No. 1-14756 10.32 Ameren Companies *Form of Restricted Stock Unit Award Agreement for Awards Issued in 2018 pursuant to 2014 Omnibus Incentive Compensation Plan December 13, 2017 Form 8-K, Exhibit 10.2, File No. 1-14756 10.33 Ameren Companies *Form of Performance Share Unit Award Agreement for Awards Issued in 2019 pursuant to 2014 Omnibus Incentive Compensation Plan 2018 Form 10-K, Exhibit 10.34, File No. 1-14756 10.34 Ameren Companies *Form of Restricted Stock Unit Award Agreement for Awards Issued in 2019 pursuant to 2014 Omnibus Incentive Compensation Plan 2018 Form 10-K, Exhibit 10.35, File No. 1-14756 10.35 Ameren Companies *Form of Performance Share Unit Award Agreement for Awards Issued in 2020 pursuant to 2014 Omnibus Incentive Compensation Plan 2019 Form 10-K, Exhibit 10.41, File No. 1-14756 10.36 Ameren Companies *Form of Restricted Share Unit Award Agreement for Awards Issued in 2020 pursuant to 2014 Omnibus Incentive Compensation Plan 2019 Form 10-K, Exhibit 10.42, File No. 1-14756 10.37 Ameren Companies *Form of Performance Share Unit Award Agreement for Awards Issued in 2021 pursuant to 2014 Omnibus Incentive Compensation Plan 2020 Form 10-K, Exhibit 10.44, File No. 1-14756 10.38 Ameren Companies *Form of Restricted Share Unit Award Agreement for Awards Issued in 2021 pursuant to 2014 Omnibus Incentive Compensation Plan 2020 Form 10-K, Exhibit 10.45, File No. 1-14756 10.39 Ameren Companies *Form of Performance Share Unit Award Agreement for Awards Issued in 2022 pursuant to 2014 Omnibus Incentive Compensation Plan 2021 Form 10-K, Exhibit 10.42, File No. 1-14756 10.40 Ameren Companies *Form of Restricted Share Unit Award Agreement for Awards Issued in 2022 pursuant to 2014 Omnibus Incentive Compensation Plan 2021 Form 10-K, Exhibit 10.43, File No. 1-14756 10.41 Ameren Companies *Ameren Corporation 2022 Omnibus Incentive Compensation Plan May 13, 2022 Form 8-K, Exhibit 10.1, File No. 1-14756 10.42 Ameren Companies *Form of Performance Share Unit Award Agreement (Relative Total Shareholder Return metric) for awards issued in 2023 pursuant to 2022 Omnibus Incentive Compensation Plan 2022 Form 10-K, Exhibit 10.45, File No. 1-14756 10.43 Ameren Companies *Form of Performance Share Unit Award Agreement (Clean Energy Transition metric) for awards issued in 2023 pursuant to 2022 Omnibus Incentive Compensation Plan 2022 Form 10-K, Exhibit 10.46, File No. 1-14756 10.44 Ameren Companies *Form of Restrictive Stock Unit Award Agreement for awards issued in 2023 pursuant to 2022 Omnibus Incentive Compensation Plan 2022 Form 10-K, Exhibit 10.47, File No. 1-14756 10.45 Ameren Companies *Form of Performance Share Unit Award Agreement (Relative Total Shareholder Return metric) for awards issued in 2024 pursuant to 2022 Omnibus Incentive Compensation Plan 10.46 Ameren Companies *Form of Performance Share Unit Award Agreement (Clean Energy Transition metric) for awards issued in 2024 pursuant to 2022 Omnibus Incentive Compensation Plan 10.47 Ameren Companies *Form of Restrictive Stock Unit Award Agreement for awards issued in 2024 pursuant to 2022 Omnibus Incentive Compensation Plan 10.48 Ameren Companies *Performance-Based Restricted Share Unit Award Agreement, dated as of November 1, 2023, between Ameren and Michael L. Moehn 10.49 Ameren Companies *Ameren Corporation Severance Plan for Ameren Officers, effective January 1, 2019 2018 Form 10-K, Exhibit 10.36, File No. 1-14756 10.50 Ameren Companies *Ameren Supplemental Retirement Plan,amended and restated effective January 1, 2008, dated June 13, 2008 June 30, 2008 Form 10-Q, Exhibit 10.1, FileNo.1-14756 10.51 Ameren Companies *First Amendment to amended and restated Ameren Supplemental Retirement Plan, dated October 24, 2008 2008 Form 10-K, Exhibit 10.44, FileNo.1-14756 10.52 Ameren Companies *Second Amendment to amended and restated Ameren Supplemental Retirement Plan, dated November 27, 2013 10.53 Ameren Companies *Third Amendment to amended and restated Ameren Supplemental Retirement Plan, dated January 5, 2015 10.54 Ameren Companies *Fourth Amendment to amended and restated Ameren Supplemental Retirement Plan, dated November 3, 2015 10.55 Ameren Companies *Fifth Amendment to amended and restated Ameren Supplemental Retirement Plan, dated October 13, 2023 21.1 Ameren Companies Subsidiaries of Ameren 23.1 Ameren Consent of Independent Registered Public Accounting Firm with respect to Ameren 23.2 Ameren Missouri Consent of Independent Registered Public Accounting Firm with respect to Ameren Missouri 23.3 Ameren Illinois Consent of Independent Registered Public Accounting Firm with respect to Ameren Illinois 24.1 Ameren Powers of Attorney with respect to Ameren 24.2 Ameren Missouri Powers of Attorney with respect to Ameren Missouri 24.3 Ameren Illinois Powers of Attorney with respect to Ameren Illinois 31.1 Ameren Rule 13a-14(a)/15d-14(a) Certification of Principal Executive Officer of Ameren 31.2 Ameren Rule 13a-14(a)/15d-14(a) Certification of Principal Financial Officer of Ameren 31.3 Ameren Missouri Rule 13a-14(a)/15d-14(a) Certification of Principal Executive Officer of Ameren Missouri 31.4 Ameren Missouri Rule 13a-14(a)/15d-14(a) Certification of Principal Financial Officer of Ameren Missouri 31.5 Ameren Illinois Rule 13a-14(a)/15d-14(a) Certification of Principal Executive Officer of Ameren Illinois 31.6 Ameren Illinois Rule 13a-14(a)/15d-14(a) Certification of Principal Financial Officer of Ameren Illinois 32.1 Ameren Section 1350 Certification of Principal Executive Officer and Principal Financial Officer of Ameren 32.2 Ameren Missouri Section 1350 Certification of Principal Executive Officer and Principal Financial Officer of Ameren Missouri 32.3 Ameren Illinois Section 1350 Certification of Principal Executive Officer and Principal Financial Officer of Ameren Illinois 97.1 Ameren Companies Ameren Corporation Financial Restatement Compensation Recoupment Policy, as adopted August 10, 2023 99.1 Ameren Companies Amended and Restated Tax Allocation Agreement, dated as of December 22, 2022 2022 Form 10-K, Exhibit 99.1, File No. 1-14756