Shareholder Vote

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 28, 2016 Commission File Number Exact Name of Registrant as Specified in Charter; State of Incorporation; Address and Telephone Number IRS Employer Identification Number 1-14756 Ameren Corporation (Missouri corporation) 1901 Chouteau Avenue St. Louis, Missouri 63103 (314) 621-3222 43-1723446 1-2967 Union Electric Company (Missouri corporation) 1901 Chouteau Avenue St. Louis, Missouri 63103 (314) 621-3222 43-0559760 1-3672 Ameren Illinois Company (Illinois corporation) 6 Executive Drive Collinsville, IL 62234 (618) 343-8150 37-0211380 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ITEM 5.07 Submission of Matters to a Vote of Security Holders. At the annual meeting of shareholders of each of Ameren Corporation (“Ameren”), Union Electric Company, doing business as Ameren Missouri (“Ameren Missouri”), and Ameren Illinois Company, doing business as Ameren Illinois (“Ameren Illinois”), held on April 28, 2016 (“Annual Meeting”), the matters listed below were submitted to a vote of each company’s respective shareholders. Ameren Item (1): Election of Directors At Ameren’s Annual Meeting, the following individuals (comprising Ameren’s full Board of Directors) were elected: Name Votes For Votes Against Abstentions Broker Non-Votes Warner L. Baxter 158,503,266 7,733,358 1,246,857 33,167,957 Catherine S. Brune 165,963,954 980,251 539,276 33,167,957 J. Edward Coleman 165,899,895 1,017,450 566,136 33,167,957 Ellen M. Fitzsimmons 163,704,070 3,246,251 533,160 33,167,957 Rafael Flores 165,890,765 1,029,778 562,938 33,167,957 Walter J. Galvin 165,004,567 1,899,820 579,094 33,167,957 Richard J. Harshman 165,374,038 1,542,449 566,994 33,167,957 Gayle P. W. Jackson 164,654,877 2,268,113 560,491 33,167,957 James C. Johnson 164,475,542 2,440,212 567,727 33,167,957 Steven H. Lipstein 165,792,271 1,113,758 577,452 33,167,957 Stephen R. Wilson 165,719,943 1,193,675 569,863 33,167,957 Item (2): Non-Binding Advisory Approval of Executive Compensation Vote Result Votes For Votes Against Abstentions Broker Non-Votes Approved 159,340,158 7,130,754 1,012,569 33,167,957 Item (3): Ratification of the Appointment of PricewaterhouseCoopers LLP as Independent Registered Public Accounting Firm for the Fiscal Year Ending December 31, 2016 Vote Result Votes For Votes Against Abstentions Broker Non-Votes Approved 196,861,071 3,218,138 572,229 — Item (4): Shareholder Proposal Relating to a Report on Aggressive Renewable Energy Adoption Vote Result Votes For Votes Against Abstentions Broker Non-Votes Not Approved 14,166,532 112,673,253 40,643,696 33,167,957 1 Item (5): Shareholder Proposal Regarding Adopting a Senior Executive Share Retention Policy Vote Result Votes For Votes Against Abstentions Broker Non-Votes Not Approved 58,010,896 84,756,287 24,716,298 33,167,957 Ameren Missouri Item (1): Election of Directors At Ameren Missouri’s Annual Meeting, the following individuals (comprising Ameren Missouri’s full Board of Directors) were elected: Mark C. Birk, Fadi M. Diya, Martin J. Lyons, Jr., Michael L. Moehn, Gregory L. Nelson, and David N. Wakeman. Each individual received 102,123,834 votes for election and no against votes, abstentions or broker non-votes. Ameren Illinois Item (1): Election of Directors At Ameren Illinois’ Annual Meeting, the following individuals (comprising Ameren Illinois’ full Board of Directors) were elected: Mark C. Birk, Martin J. Lyons, Jr., Richard J. Mark, Craig D. Nelson and Gregory L. Nelson. Each individual received 25,452,373 votes for election and no against votes, abstentions or broker non-votes. This combined Form 8-K is being filed separately by Ameren Corporation, Union Electric Company and Ameren Illinois Company (each a “registrant”). Information contained herein relating to any individual registrant has been filed by such registrant on its own behalf. No registrant makes any representation as to information relating to any other registrant. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. The signature for each undersigned company shall be deemed to relate only to matters having reference to such company or its subsidiaries. AMEREN CORPORATION (Registrant) By: /s/ Gregory L. Nelson Name: Gregory L. Nelson Title: Senior Vice President, General Counsel and Secretary UNION ELECTRIC COMPANY (Registrant) By: /s/ Gregory L. Nelson Name: Gregory L. Nelson Title: Senior Vice President, General Counsel and Secretary AMEREN ILLINOIS COMPANY (Registrant) By: /s/ Gregory L. Nelson Name: Gregory L. Nelson Title: Senior Vice President, General Counsel and Secretary Date: April 29, 2016