{"url_path":"/sec/aee/proxy/2026-03-31/000110465926037765","section_key":"body","section_title":"DEFA14A body","topic":"sec","document":{"doc_type":"DEFA14A","doc_date":"2026-03-31","source_url":"https://www.sec.gov/Archives/edgar/data/1002910/0001104659-26-037765-index.html","accession_number":"0001104659-26-037765","cik":"0001002910","ticker":"AEE","issuer_name":"AMEREN CORP","edgar_url":"https://www.sec.gov/Archives/edgar/data/1002910/0001104659-26-037765-index.html","primary_entity_key":"0001002910","primary_entity_name":"AMEREN CORP"},"word_count":557,"has_tables":true,"body_markdown":"DEFA14A\n1\ntm261401d4_defa14a.htm\nDEFA14A\n\n**UNITED STATES**\n\n**SECURITIES AND EXCHANGE COMMISSION**\n\n**Washington, D.C. 20549**\n\n**SCHEDULE 14A**\n\n**Proxy Statement Pursuant to Section 14(a) of\nthe**\n\n**Securities Exchange Act of 1934**\n\n**(Amendment No. )**\n\nFiled by the Registrant x\n\nFiled by a party other than the Registrant ¨\n\nCheck the appropriate box:\n\n¨\nPreliminary Proxy Statement\n\n¨\nConfidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))\n\n¨\nDefinitive Proxy Statement\n\nx\nDefinitive Additional Materials\n\n¨\nSoliciting Material under §\n240.14a-12\n\n**Ameren Corporation**\n\n**(Name of Registrant as Specified In Its Charter)**\n\n**(Name of Person(s) Filing Proxy Statement,\nif other than the Registrant)**\n\nPayment of Filing Fee (Check all boxes that apply):\n\nx\nNo fee required\n\n¨\nFee paid previously with preliminary materials\n\n¨\nFee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11\n\nYour Vote Counts!\n*Please check the meeting materials for any special requirements for meeting attendance.\nSmartphone users\nPoint your camera here and\nvote without entering a\ncontrol number\nFor complete information and to vote, visit www.ProxyVote.com\nControl #\nV89670-Z92016-P45770\nAMEREN CORPORATION\n1901 CHOUTEAU AVENUE, MC-1310\nST. LOUIS, MO 63103\nAMEREN CORPORATION\n2026 Annual Meeting\nVote by May 13, 2026\n11:59 PM ET\nYou invested in AMEREN CORPORATION and it’s time to vote!\nYou have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the\navailability of proxy materials for the shareholder meeting to be held on May 14, 2026.\nVote Virtually at the Meeting*\nMay 14, 2026\n10:00 A.M. CDT\nVirtually at:\nwww.virtualshareholdermeeting.com/AEE2026\nGet informed before you vote\nView the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by\nrequesting prior to April 30, 2026. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you\nmay (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email,\nplease include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or\nemail copy.\n\nTHIS IS NOT A VOTABLE BALLOT\nThis is an overview of the proposals being presented at the\nupcoming shareholder meeting. Please follow the instructions on\nthe reverse side to vote these important matters.\nVote at www.ProxyVote.com\nPrefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Delivery Settings”.\nVoting Items\nBoard\nRecommends\nV89671-Z92016-P45770\nITEM 1\nCOMPANY PROPOSAL - ELECTION OF DIRECTORS—NOMINEES FOR DIRECTOR\n1a. CYNTHIA J. BRINKLEY For\n1b. WARD H. DICKSON For\n1c. JAMIE L. ENGSTROM For\n1d. ELLEN M. FITZSIMMONS For\n1e. RAFAEL FLORES For\n1f. RICHARD J. HARSHMAN For\n1g. CRAIG S. IVEY For\n1h. STEVEN H. LIPSTEIN For\n1i. MARTIN J. LYONS, JR. For\n1j. LEO S. MACKAY, JR. For\n1k. TIMOTHY S. RAUSCH For\n1l. STEVEN O. VONDRAN For\nITEM 2 - COMPANY PROPOSAL - ADVISORY APPROVAL OF COMPENSATION OF THE NAMED EXECUTIVE OFFICERS\nDISCLOSED IN THE PROXY STATEMENT. For\nITEM 3 - COMPANY PROPOSAL - RATIFICATION OF THE APPOINTMENT OF PRICEWATERHOUSECOOPERS LLP AS\nINDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE FISCAL YEAR ENDING DECEMBER 31, 2026. For\nNOTE: In their discretion, the proxies are authorized to vote on such other business as may properly come before the\nmeeting or any adjournment thereof."}