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 23, 2015 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 23, 2015 (“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 Withheld Broker Non-Votes Warner L. Baxter 157,766,326 8,218,870 32,808,088 Catherine S. Brune 163,872,608 2,112,588 32,808,088 J. Edward Coleman 163,496,763 2,488,433 32,808,088 Ellen M. Fitzsimmons 162,800,414 3,184,782 32,808,088 Walter J. Galvin 162,740,067 3,245,129 32,808,088 Richard J. Harshman 163,344,094 2,641,102 32,808,088 Gayle P. W. Jackson 163,649,994 2,335,202 32,808,088 James C. Johnson 163,569,045 2,416,151 32,808,088 Steven H. Lipstein 163,250,923 2,734,273 32,808,088 Stephen R. Wilson 163,813,322 2,171,874 32,808,088 Jack D. Woodard 163,769,831 2,215,365 32,808,088 Item (2): Non-Binding Advisory Approval of Executive Compensation Vote Result Votes For Votes Against Abstentions Broker Non-Votes Approved 156,809,760 7,256,910 1,918,526 32,808,088 Item (3): Ratification of the Appointment of PricewaterhouseCoopers LLP as Independent Registered Public Accounting Firm for the Fiscal Year Ending December 31, 2015 Vote Result Votes For Votes Against Abstentions Broker Non-Votes Approved 193,993,981 3,470,757 1,328,546 — Item (4): Shareholder Proposal Regarding Having an Independent Board Chairman Vote Result Votes For Votes Against Abstentions Broker Non-Votes Not Approved 36,903,916 126,787,809 2,293,471 32,808,088 1 Item (5): Shareholder Proposal Regarding a Report on Lobbying Vote Result Votes For Votes Against Abstentions Broker Non-Votes Not Approved 57,419,627 82,663,188 25,902,381 32,808,088 Item (6): Shareholder Proposal Regarding Adopting Executive Compensation Incentives for Carbon Reduction Vote Result Votes For Votes Against Abstentions Broker Non-Votes Not Approved 11,101,213 126,758,667 28,125,316 32,808,088 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: Daniel F. Cole, Fadi M. Diya, Martin J. Lyons, Jr., Michael L. Moehn, and Gregory L. Nelson. Each individual received 102,123,834 votes for election and no withheld 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: Daniel F. Cole, 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 withheld 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 24, 2015