AEENYSESEC EDGAREDGAR

AMEREN CORP

Electric & Other Services Combined·ST LOUIS, MO·FY end 12/31·CIK 1002910

Board of Directors

12 members · 11 independent · FY 2025
DirectorRoleTenureAgeCommitteesIndep.Annual fees
Cynthia J. BrinkleyDirector7y66Human ResourcesNCG$315,060
Ward H. DicksonDirector8y63AuditTechFinance$315,060
Jamie L. EngstromDirector0y48AuditTech
Ellen M. FitzsimmonsLead Independent Director17y65Human ResourcesNCG$330,060
Rafael FloresDirector11y70AuditNuclear Operations and Environmental Sustainability$315,060
Richard J. HarshmanDirector13y69AuditHuman Resources$315,060
Craig S. IveyDirector8y63TechFinanceNuclear Operations and Environmental Sustainability$295,060
Steven H. LipsteinDirector16y70Human ResourcesNCG$307,949
Martin J. Lyons, Jr.CEO and Director4y59
Leo S. Mackay, Jr.Director6y64AuditNuclear Operations and Environmental Sustainability$295,060
Timothy S. RauschDirector0y61FinanceNuclear Operations and Environmental Sustainability
Steven O. VondranDirector1y55FinanceNuclear Operations and Environmental Sustainability$295,060

Risk-factor diff

FY 2025 10-K vs. FY 2024
+33 new32 removed

Net-new paragraphs in the most recent 10-K's Item 1A. Companies rarely add risk language without a real reason — additions here are often a leading signal of management concerns.

NEW · FY 2025

charge for our services. From time to time, our regulators may approve riders or other recovery mechanisms that allow electric or natural gas rates to be adjusted without a traditional regulatory rate review. These mechanisms could be changed or terminated.

NEW · FY 2025

Beginning in 2024 through at least 2027, electric distribution rates for Ameren Illinois are established through an MYRP, which are subject to ongoing regulatory and judicial proceedings and associated risks, and are subject to a reconciliation cap.

NEW · FY 2025

Pursuant to the CEJA, Ameren Illinois has the option to establish electric distribution rates through an MYRP or a traditional regulatory rate review. An MYRP establishes rates for a four-year period, and Ameren Illinois has the option to file for an MYRP every four years. Ameren Illinois elected to file an MYRP for rates effective in 2024 through 2027. Under the MYRP, Ameren Illinois is allowed to reconcile its actual electric distribution revenue requirement, as adjusted for certain cost variations, to the ICC-approved revenue requirement on an annual basis, subject to a reconciliation cap. …

NEW · FY 2025

Pursuant to the PPRA, Ameren Missouri’s PISA election was extended through 2035 and an additional extension through 2040 is allowed if requested by Ameren Missouri and approved by the MoPSC. This law also reduced the annual limit on increases to the electric service revenue requirement used to set customer rates, compared to the revenue requirement established in the immediately preceding rate order, due to the inclusion of incremental PISA deferrals in the revenue requirement. The annual limit in effect was 2.5% and changed to 2.25%, prorated monthly, for revenue requirements approved by the …

NEW · FY 2025

Environmental regulations impact the electric utility industry, and compliance obligations could be costly for Ameren Missouri, which operates coal-fired and natural gas-fired energy centers. As of December 31, 2025, Ameren Missouri’s coal-fired energy centers represented 5% and 11% of Ameren’s and Ameren Missouri’s rate base, respectively. Compliance obligations under the Clean Air Act stem from a variety of programs including the NSPS, the MATS, emission allowance programs, the CSAPR, and the National Ambient Air Quality Standards, which are subject to periodic review for certain pollutants.…

+ 25 more new paragraphs not shown

Policies & disclosures

Clawback, anti-hedging, stock ownership, and related-party policies will populate from extracted proxy sections.