Ameren Corporation filings document a Missouri-incorporated utility holding company with NYSE-listed common stock and rate-regulated utility subsidiaries, including Ameren Missouri, Ameren Illinois and co-registrants such as Union Electric Company and Ameren Illinois Company. The record covers consolidated operating results, unaudited financial statements, earnings guidance, utility infrastructure investment and the electric and natural gas service activities of Ameren Missouri and Ameren Illinois.
SEC disclosures also cover capital structure and financing activity, including senior note offerings under shelf registration statements, as well as proxy matters, shareholder voting, board composition, committee assignments, director compensation and governance policies. Form 8-K filings report material events, financial exhibits and co-registrant disclosures for the company's regulated utility subsidiaries.
Ameren Corp (AEE) reported an insider transaction by its Sr. Executive VP & CFO. On November 3, 2025, the officer sold 6,500 shares of common stock at $101.44 per share (transaction code S).
After the sale, the officer beneficially owned 198,973 shares directly. In addition, 5,183 share equivalents were held indirectly via a 401(k) unitized stock fund, estimated as of October 31, 2025. The direct holdings figure includes 594 accrued dividend equivalents added during Q3 2025 under the company’s 2022 Omnibus Incentive Compensation Plan.
Ameren Corp (AEE) reported an initial Form 3 for a company officer. The reporting person, an SVP of a subsidiary, disclosed 17,481 shares of common stock held directly, which includes 3,358 restricted stock units granted under the 2022 Omnibus Incentive Compensation Plan. Indirect holdings include 3,018 share equivalents by a 401(k) plan as of October 31, 2025, and 390 shares held by a spouse. No derivative securities were reported.
Ameren Corp (AEE) filed an initial statement of beneficial ownership for a company insider who serves as SVP of a subsidiary. The filing reports 11,535 shares of common stock held directly, which includes 5,694 restricted stock units granted under the 2022 Omnibus Incentive Compensation Plan. It also lists 1,769 share equivalents held indirectly through the Ameren Corporation Savings Investment Plan’s unitized stock fund as of October 31, 2025.
The date of the event requiring the statement was October 25, 2025. This is an administrative disclosure of current holdings under Section 16.
Ameren Corp (AEE): Initial insider holdings reported. Ryan J. Martin, SVP Corporate Strategy, Risk & Investor Relations, filed an initial statement of beneficial ownership effective 10/25/2025.
He reported 25,417 shares of common stock held directly, which includes 5,746 restricted stock units granted under the 2022 Omnibus Incentive Compensation Plan. He also reported 1,770 share equivalents held indirectly through the Ameren Corporation Savings Investment Plan as of October 31, 2025.
Ameren Corp (AEE) insider Ajay K. Arora filed a Form 3, reporting initial beneficial ownership as an officer (SVP of a subsidiary) effective 10/25/2025.
Holdings include 12,541 shares held directly, which includes 3,653 restricted stock units granted under the 2022 Omnibus Incentive Compensation Plan. Indirect holdings comprise 24,037 shares by a family trust and 1,699 share equivalents by 401(k) as of 10/31/2025.
AEE: A selling security holder filed a Form 144 notice to sell up to 6,500 shares of common stock. The filing lists an aggregate market value of $659,360.00 and an approximate sale date of 11/03/2025. The broker named is Fidelity Brokerage Services LLC, and the shares are indicated for the NYSE.
The shares to be sold were acquired on 03/01/2025 through restricted stock vesting, with the consideration labeled as compensation. The filing also notes a total of 270,409,918 shares outstanding, which serves as a baseline for context. This Form 144 is a notice of a proposed sale by an affiliate or holder, outlining the planned method and timing.
Ameren Corp (AEE) officer Theresa A. Shaw reported an equity award and updated holdings. On 10/09/2025, she acquired 2,411 restricted stock units at $0 under the 2022 Omnibus Incentive Compensation Plan. These RSUs are scheduled to vest upon the payment date in 2029, which shall be no later than November 15, 2029, subject to plan terms.
Following the reported transaction, Shaw directly owned 33,267 shares of Ameren common stock. The reported amount includes 92 accrued dividend equivalents acquired during the first through third quarters of 2025. She also held 884 share equivalents indirectly in the Ameren Corporation Savings Investment Plan as of September 30, 2025.
Ameren Corporation announced executive changes effective January 1, 2026. Michael L. Moehn, currently Senior EVP and CFO, was elected Group President, Ameren Utilities. Leonard P. Singh, Chairman and President of Ameren Illinois, was elected Executive Vice President and Chief Financial Officer.
Compensation was updated to reflect the new roles. Effective January 1, 2026, Mr. Moehn’s base salary increases from $895,000 to $960,000, with STIP target rising from 90% to 100% of base salary and LTIP target from 315% to 350%. Mr. Singh’s base salary increases from $650,000 to $715,000, with STIP target moving from 80% to 90% and LTIP target from 215% to 260%. The company noted no agreements or family relationships related to these elections and no related-party transactions under Item 404(a). A press release was furnished as Exhibit 99.1.
Ameren Corporation announced a leadership change at its Ameren Missouri subsidiary. On October 2, 2025, Mark C. Birk decided to retire from his role as Chairman and President of Union Electric Company, doing business as Ameren Missouri, and from all other positions he holds with Ameren subsidiaries.
Effective the same day, Michael L. Moehn, the company’s Senior Executive Vice President and Chief Financial Officer, was elected to also serve as Interim Chairman and President of Ameren Missouri. Moehn has been Ameren’s Chief Financial Officer since 2019 and previously led Ameren Missouri as Chairman and President from 2014 to 2019, giving him prior experience in this role.
Ameren Illinois Company sold $350 million principal amount of its 5.625% First Mortgage Bonds due 2055, a further issuance of bonds originally issued on March 3, 2025 in the same principal amount. The bonds were offered under an effective shelf registration on Form S-3 with a related prospectus and September 15, 2025 prospectus supplement. Ameren Illinois received approximately $358.1 million in net offering proceeds before expenses from this transaction. The report also files the underwriting agreement, indenture documents, and legal opinions related to the bond offering as exhibits.