{"url_path":"/sec/aee/10-k/2026/item-12","section_key":"item-12","section_title":"Item 12 SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS","topic":"sec","document":{"doc_type":"10-K","doc_date":"2026-02-18","source_url":"https://www.sec.gov/Archives/edgar/data/1002910/0001002910-26-000009-index.html","accession_number":"0001002910-26-000009","cik":"0001002910","ticker":"AEE","issuer_name":"AMEREN CORP","edgar_url":"https://www.sec.gov/Archives/edgar/data/1002910/0001002910-26-000009-index.html","primary_entity_key":"0001002910","primary_entity_name":"AMEREN CORP"},"word_count":431,"has_tables":true,"body_markdown":"ITEM 12.SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS\n\nEquity Compensation Plan Information\n\nThe following table presents information as of December 31, 2025, with respect to the shares of Ameren’s common stock that may be issued under its existing equity compensation plans:\n\nPlan\nCategory\nColumn A\n\nNumber of Securities To Be\n\nIssued Upon Exercise of\n\nOutstanding Options,\n\nWarrants and Rights(a)\n\nColumn B\n\nWeighted-Average\n\nExercise Price of\n\nOutstanding Options,\n\nWarrants and Rights\n\nColumn C\n\nNumber of Securities Remaining\n\nAvailable for Future Issuance\n\nUnder Equity Compensation Plans (excluding\n\nsecurities reflected in Column A)(b)\n\nEquity compensation plans approved by security holders1,418,540 (c)7,328,962 \n\nEquity compensation plans not approved by security holders— — — \n\nTotal1,418,540 (c)7,328,962 \n\n(a)Of the securities to be issued, 896,415 of the securities represent the target number of outstanding performance share units (PSUs) and 372,513 of the securities represent the number of outstanding restricted stock units (RSUs), both including accrued and reinvested dividends. The actual number of shares issued in respect of the PSUs will vary from 0% to 200% of the target level, depending upon the achievement of TSR objectives or performance goals established for such awards. For additional information about the PSUs and RSUs, including payout calculations, see “Compensation Discussion and Analysis – Long-Term Incentive Compensation” in Ameren’s definitive proxy statement for its 2026 annual meeting of shareholders, which will be filed pursuant to SEC Regulation 14A. The remaining 149,612 of the securities represent shares that may be issued to satisfy obligations under the Ameren Corporation Deferred Compensation Plan for Members of the Board of Directors.\n\n(b)Includes shares remaining available for issuance pursuant to awards under the Ameren Corporation 2022 Omnibus Incentive Compensation Plan.\n\n(c)No cash consideration is received when shares are distributed for earned PSUs, RSUs, and director awards. Accordingly, there is no weighted-average exercise price.\n\nAmeren Missouri and Ameren Illinois do not have separate equity compensation plans.\n\nSecurity Ownership of Certain Beneficial Owners and Management\n\nThe information required by Item 403 of SEC Regulation S-K for Ameren will be included in its definitive proxy statement for its 2026 annual meeting of shareholders filed pursuant to SEC Regulation 14A; it is incorporated herein by reference. Information required by this SEC Regulation S-K item for Ameren Missouri and Ameren Illinois will be included in each company’s definitive information statement for its\n\n164\n\n[Table](#i379db4a35dfd4fdf8d9a48974b14319e_7)[of Contents](#i379db4a35dfd4fdf8d9a48974b14319e_7)\n\n2026 annual meeting of shareholders filed pursuant to SEC Regulation 14C; it is incorporated herein by reference. Specifically, reference is made to the following section of Ameren’s definitive proxy statement and each of Ameren Missouri’s and Ameren Illinois’ definitive information statements: “Security Ownership.”"}