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 Corporation director Richard J. Harshman reported receiving 1,686 shares of Ameren common stock on January 5, 2026 as an equity award. The shares were acquired at a stated price of $0 per share, consistent with non-cash director compensation. Following this grant, Harshman beneficially owned 22,135 Ameren shares in direct ownership form. A footnote explains that this total includes 71 shares acquired during the fourth quarter of 2025 through reinvested dividends, reflecting ongoing accumulation of stock through the company’s dividend reinvestment process.
Ameren Corp director Rafael Flores reported an amended insider transaction involving Ameren Corp (AEE) common stock. On 11/17/2025, he sold 626 shares of common stock at a weighted average price of $105.32 per share, as part of multiple trades within a price range of $105.21 to $105.38. Following this sale, he beneficially owned 13,772 shares directly, which include 291 shares acquired during the first through third quarters of 2025 through reinvested dividends. The current filing is an amendment to the Form 4 originally filed on November 18, 2025, and is being made to correct the reported number of shares sold, the sale price, and the post-transaction share balance.
Ameren Corp director Jamie L. Engstrom has filed an initial insider ownership report as of January 1, 2026. The filing lists Engstrom as a director of Ameren Corp and reports that no Ameren Corp securities are beneficially owned, with 0 non-derivative shares and no derivative securities reported. The ownership is shown as direct, with no indirect holdings disclosed. The form is filed by one reporting person, and it is signed on Engstrom’s behalf by an attorney-in-fact from Ameren Corporation.
Ameren Corporation director Steven O. Vondran reported a stock award received as director compensation. On January 5, 2026, he acquired 1,686 shares of Ameren common stock at a stated price of $0 per share, described as director compensation. After this grant, he beneficially owned 3,597 shares of Ameren common stock, held in direct ownership form. The filing indicates the transaction as an acquisition of non-derivative equity rather than an open-market purchase.
Ameren Corporation executive Shawn E. Schukar reported a transfer of 511 shares of Ameren common stock on December 12, 2025. The transaction, coded "G," shows 511 shares disposed of at a price of $0, reflecting a non-cash movement of shares.
After this transaction, he beneficially owned 56,367 shares of Ameren common stock directly, an amount that includes 62 accrued dividend equivalents from the third quarter of 2025 under the company’s 2022 Omnibus Incentive Compensation Plan. In addition, he held an estimated 3,122 share equivalents through the unitized stock fund in the Ameren Corporation Savings Investment Plan as of November 30, 2025.
Schukar is identified as Chairman and President of a subsidiary of Ameren, and the form was filed as an individual reporting person, highlighting an update to his personal ownership rather than a company-level event.
Ameren Corporation reported that its Board of Directors has elected Jamie L. Engstrom to the board, with her term beginning on January 1, 2026 and expiring at Ameren's 2026 Annual Meeting of Shareholders. Effective the same date, she will serve on the Board’s Audit and Risk Committee and the Cybersecurity and Digital Technology Committee.
Engstrom is the Global Chief Information Officer and Senior Vice President, Global Information Systems at Caterpillar, Inc. and previously served as Chief Information Officer for Caterpillar Financial Services Corporation from 2018–2020 after multiple IT leadership roles since 1999. Ameren states there is no arrangement or understanding with any person under which she was selected, and she had no business relationships with Ameren or its subsidiaries in 2024 or through 2025 requiring disclosure under Item 404(a) of Regulation S-K. She will participate in Ameren’s standard non-employee director compensation program. Ameren also issued a press release on December 15, 2025, furnished as Exhibit 99.1.
Ameren Corporation and its utility subsidiaries amended and restated their main bank credit facilities to increase available liquidity and extend maturities. The Missouri borrowers, Ameren and Ameren Missouri, entered a new $1.9 billion multi-year unsecured revolving credit agreement, up from $1.4 billion. Ameren and Ameren Illinois entered a separate $1.3 billion unsecured revolving credit agreement, up from $1.2 billion, bringing total committed credit under the amended agreements to $3.2 billion.
The maturity of both facilities was extended from December 6, 2028 to December 10, 2030, with options for two additional one-year extensions subject to lender approval. Borrowing limits for each borrower were raised, and the aggregate letter of credit capacity was increased to $400 million for the Missouri facility while remaining at $275 million for the Illinois facility. The agreements include ratings-based pricing, customary covenants and events of default, and leverage covenants capping Ameren’s consolidated debt ratio at 67.5% of total capitalization and Ameren Illinois and Ameren Missouri at 65%.
Ameren Corporation director Steven H. Lipstein reported a change in his Ameren common stock holdings. On 11/26/2025, a Form 4 transaction coded “G” showed the disposition of 2,300 shares of Ameren common stock at a stated price of $0 per share.
Following this transaction, Lipstein beneficially owns 36,176 shares of Ameren common stock in direct ownership form. The filing indicates that the Form 4 was signed by Jonathan T. Shade, Deputy Corporate Secretary of Ameren Corporation, acting as attorney-in-fact for Lipstein.
Ameren Corporation and its utility Ameren Missouri report that the Missouri Public Service Commission has approved an amended non-unanimous global agreement for their large primary service tariff, known as the Large Load Customer Rate Plan. The order covers new facilities with expected monthly demand of at least 75 megawatts and existing customers expanding demand by at least 75 megawatts.
These large customers must sign electric service agreements with a minimum 12-year term plus a ramp period of up to five years, pay demand charges on at least 80% of contracted capacity, and give 24 months’ notice before terminating service or pay exit fees tied to their minimum monthly bill. The order also requires collateral equal to two years of minimum bills, with up to 60% relief for stronger credits.
An earnings sharing mechanism applies if Ameren Missouri’s return on equity exceeds the staff-recommended midpoint of 9.74%, with 65% of the excess set aside to benefit retail customers. The order also allows partial revenue deferral in certain force majeure events.
Ameren Corporation (AEE) director Rafael Flores reported a small stock sale. On 11/17/2025, he sold 225 shares of Ameren common stock at a price of $105.21 per share. After this transaction, he beneficially owned 14,173 Ameren shares in total. This total includes 291 shares acquired during the first through third quarters of 2025 through reinvested dividends.