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 24, 2014 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, Illinois 62234 (618) 343-8039 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 d/b/a Ameren Missouri (“Ameren Missouri”) and Ameren Illinois Company d/b/a Ameren Illinois (“Ameren Illinois”) held on April 24, 2014 (each, its respective “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 Abstentions Broker Non-Votes Warner L. Baxter 161,607,685 3,280,622 — 34,279,052 Catherine S. Brune 162,788,440 2,099,867 — 34,279,052 Ellen M. Fitzsimmons 162,843,836 2,044,471 — 34,279,052 Walter J. Galvin 162,790,277 2,098,030 — 34,279,052 Richard J. Harshman 162,812,017 2,076,290 — 34,279,052 Gayle P. W. Jackson 162,554,662 2,333,645 — 34,279,052 James C. Johnson 161,632,211 3,256,096 — 34,279,052 Steven H. Lipstein 162,260,317 2,627,990 — 34,279,052 Patrick T. Stokes 161,824,950 3,063,357 — 34,279,052 Thomas R. Voss 161,886,732 3,001,575 — 34,279,052 Stephen R. Wilson 162,817,804 2,070,503 — 34,279,052 Jack D. Woodard 162,136,850 2,751,457 — 34,279,052 Item (2): Non-Binding Advisory Approval of Executive Compensation Vote Result Votes For Votes Against Abstentions Broker Non-Votes Approved 154,807,961 7,158,176 2,922,170 34,279,052 Item (3): Approval of the 2014 Omnibus Incentive Compensation Plan Vote Result Votes For Votes Against Abstentions Broker Non-Votes Approved 150,245,017 12,484,930 2,158,360 34,279,052 Item (4): Ratification of the Appointment of Independent Registered Public Accounting Firm for the Fiscal Year Ending December 31, 2014 Vote Result Votes For Votes Against Abstentions Broker Non-Votes Approved 195,274,798 2,463,774 1,428,787 — Item (5): Shareholder Proposal Regarding Having an Independent Board Chairman Vote Result Votes For Votes Against Abstentions Broker Non-Votes Not approved 42,696,653 119,941,156 2,250,498 34,279,052 Item (6): Shareholder Proposal Regarding a Report on Lobbying Vote Result Votes For Votes Against Abstentions Broker Non-Votes Not approved 49,362,573 84,974,123 30,551,611 34,279,052 Item (7): Shareholder Proposal Regarding a Report on Greenhouse Gas Emissions This shareholder proposal, which was included in Ameren’s proxy materials, was withdrawn and was not voted upon at the Annual Meeting. 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, Martin J. Lyons, Jr., Michael L. Moehn, Charles D. Naslund 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 and Gregory L. Nelson. Each individual received 25,452,373 votes for election and no withheld votes, abstentions or broker non-votes. 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) /s/ Gregory L. Nelson Gregory L. Nelson Senior Vice President, General Counsel and Secretary UNION ELECTRIC COMPANY (Registrant) /s/ Gregory L. Nelson Gregory L. Nelson Senior Vice President, General Counsel and Secretary AMEREN ILLINOIS COMPANY (Registrant) /s/ Gregory L. Nelson Gregory L. Nelson Senior Vice President, General Counsel and Secretary Date: April 25, 2014