Welcome to our dedicated page for Ameren SEC filings (Ticker: AEE), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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 is asking shareholders to vote at its virtual 2026 Annual Meeting on May 14, 2026 on three items: electing 12 directors, approving executive pay on an advisory basis, and ratifying PricewaterhouseCoopers as auditor for 2026.
In 2025 Ameren reported GAAP diluted earnings per share of $5.35 and weather-normalized, adjusted diluted EPS of $4.89, paid annual dividends of $2.84 per share (a 6% increase over 2024), and invested $4.1 billion in energy infrastructure. The company highlights regulatory wins in Missouri and Illinois, continued grid investments, strong customer satisfaction, and more than $150 million in energy assistance and philanthropy.
The board emphasizes its majority-independent composition, recent refreshment with two new directors, strong governance practices, and a pay-for-performance program where 2025 annual incentives paid at 161.1% of target and 2023 performance share units paid out at 94.0% of target for relative TSR and 141.3% for energy transition goals.
The Vanguard Group filed Amendment No. 15 to a Schedule 13G/A reporting zero beneficial ownership of Ameren Corp common stock. The filing states Amount beneficially owned: 0 and Percent of class: 0% as a result of an internal realignment.
The filing explains that on January 12, 2026 certain Vanguard subsidiaries or business divisions began reporting separately in reliance on SEC Release No. 34-39538, and Vanguard Inc. no longer is deemed to beneficially own those securities; the filing is signed by Ashley Grim.
Ameren Corp senior vice president of finance Ryan J. Martin sold common stock in an open-market transaction. On March 4, 2026, he sold 1,300 shares of Ameren common stock at an average price of $113.31 per share. After this sale, he directly owned 26,479 shares. He also held an estimated 1,789 share equivalents indirectly through a 401(k) unitized stock fund as of February 28, 2026.
Ameren Corp director Catherine S. Brune reported a bona fide gift of 450 shares of common stock. The gift transfer occurred on March 5, 2026, and she now directly owns 26,628 shares of Ameren common stock following the transaction.
Ameren Corporation has issued $400 million of 5.00% Senior Notes due 2036. These are long-term debt securities that pay a fixed 5.00% interest rate until maturity in 2036, giving Ameren a defined-cost source of capital for the next decade.
Ameren reports that it received approximately $396.6 million in net offering proceeds before expenses at closing. The notes were sold under an existing shelf registration on Form S-3 and a related prospectus supplement, reflecting a planned financing step to support the company’s capital and funding needs.
Ameren Corp director Timothy S. Rausch received a stock award of 1,251 common shares as director compensation. The shares were acquired on March 1, 2026 at a stated price of $0.00 per share, reflecting a grant rather than an open-market purchase.
After this award, his directly owned Ameren common stock holdings reported in this filing total 1,251 shares.
Ameren Corp Chairman, President & CEO Martin J. Lyons reported multiple stock transactions in Ameren common shares. He completed an open-market sale of 26,818 shares at $111.84 per share under a Rule 10b5-1 trading plan, leaving him with 282,681 directly held shares afterward.
On a prior date, 28,154 shares were withheld by the issuer at $113.28 per share to cover tax obligations tied to vesting performance share units and restricted stock units. The filing also notes 2,116 share equivalents held indirectly through the Ameren Corporation Savings Investment Plan’s unitized stock fund as of February 28, 2026.
Ameren Corp senior vice president Theresa A. Shaw reported a tax-related share disposition. On February 27, 2026, 1,296 shares of Ameren common stock were withheld by the company at $113.28 per share to cover tax obligations from vesting performance and restricted stock units, rather than being sold in the open market. After this withholding, she directly held 34,397 Ameren shares, and an additional 897 share equivalents were held indirectly through a 401(k) plan as of February 28, 2026.
Ameren Corp senior vice president of a subsidiary, Ajay K. Arora, reported a tax-related share disposition. On February 27, 2026, 1,035 common shares were withheld by the issuer at $113.28 per share to satisfy tax withholding obligations tied to vesting equity awards, leaving 15,499 directly owned shares.
He also reports indirect holdings of 1,717 share equivalents in the Ameren Corporation Savings Investment Plan as of February 28, 2026, and 21,037 shares held through a family trust.
Ameren Corp Group President, Utilities Michael L. Moehn reported a tax-related share disposition. On February 27, 2026, 14,355 shares of Ameren common stock were withheld by the company at $113.28 per share to cover tax obligations tied to vesting performance share units and restricted stock units.
After this withholding, Moehn directly owned 211,525 common shares. A separate footnote shows an additional 5,233 share equivalents held indirectly through the Ameren Corporation Savings Investment Plan as of February 28, 2026. The filing characterizes the disposition as a payment of tax liability using shares rather than an open-market sale.