8-K

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): January 17, 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

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 7.01 Regulation FD Disclosure.

On January 17, 2014, Union Electric Company, doing business as Ameren Missouri (“Ameren Missouri”), issued a press release announcing the officer changes described under Item 8.01 below.

A copy of the press release is furnished with this Form 8-K and attached hereto as Exhibit 99.1. Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that section and shall not be deemed to be incorporated by reference into any filing of Ameren Missouri or Ameren Corporation under the Securities Act of 1933, as amended, or the Exchange Act.

ITEM 8.01 Other Events.

On January 17, 2014, Ameren Missouri announced that Adam Heflin, Senior Vice President and Chief Nuclear Officer (“CNO”) of Ameren Missouri, will leave Ameren Missouri to become Chief Executive Officer and Chief Nuclear Officer of The Wolf Creek Nuclear Operating Corporation, an entity not affiliated with Ameren Corporation. Effective January 17, 2014, Fadi Diya, most recently the Vice President of Nuclear Operations of Ameren Missouri, was promoted to the positions of Senior Vice President and CNO of Ameren Missouri.

ITEM 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number	Title
99.1	Press release by Ameren Missouri, dated January 17, 2014.

This combined Form 8-K is being filed separately by Ameren Corporation and Union Electric 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.

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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/ Martin J. Lyons, Jr.
Name:	Martin J. Lyons, Jr.
Title:	Executive Vice President and Chief Financial Officer

UNION ELECTRIC COMPANY (Registrant)
By:	/s/ Warner L. Baxter
Name:	Warner L. Baxter
Title:	Chairman, President and Chief Executive Officer

Dated: January 17, 2014

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EXHIBIT INDEX

Exhibit No.	Description
99.1	Press release by Ameren Missouri, dated January 17, 2014.

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EX-99.1

Exhibit 99.1

Contacts Brianne Vaught 314-554-2738 bvaught@ameren.com Joe Muehlenkamp 314-554-4135 jmuehlenkamp@ameren.com

Ameren Missouri names new Chief Nuclear Officer

ST. LOUIS (Jan. 17, 2014)—Ameren Missouri today announced the promotion of Fadi Diya to Senior Vice President and Chief Nuclear Officer (CNO), replacing Adam Heflin, who is leaving to become Chief Executive Officer and CNO of The Wolf Creek Nuclear Operating Corporation.

Diya joined Ameren as Superintendent of Design Engineering at Callaway Energy Center in 2005 and was later promoted to Plant Director. In 2008, Diya was promoted to Vice President of Nuclear Operations. Diya has spent more than 29 years in the nuclear industry and holds bachelor’s and master’s degrees in Civil Engineering from Bradley. He also holds a senior reactor operator certification.

“We are fortunate to have had a robust succession plan and a well-prepared successor ready to step into the CNO role,” said Warner Baxter, President and CEO of Ameren Missouri. “Fadi’s extensive operating experience at Callaway, strong leadership skills and engagement in numerous nuclear industry initiatives has prepared him well to take on the broader role of CNO at Callaway. I have the utmost confidence in Fadi, the entire Callaway leadership team and our Callaway co-workers to maintain Callaway’s strong record of excellent operating performance.”

“Fadi’s whole career has been in the nuclear industry, having worked at a number of nuclear plants prior to joining Ameren Missouri,” said Chuck Naslund, Executive Vice President of Corporate Operations Oversight. “His dedication and commitment to excellence will continue to bring significant benefits to Callaway in the future.” Naslund is a former Ameren Missouri CNO whose current role is corporate oversight of Ameren’s nuclear, fossil and renewable generation operations.

The Callaway Energy Center, which is located near Fulton, Mo., generates approximately 20 percent of the electricity supplied to Ameren Missouri’s 1.2 million customers.

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Ameren Missouri has been providing electric and gas service for more than a century, and our electric rates are among the lowest in the nation. We serve 1.2 million electric and 127,000 natural gas customers in central and eastern Missouri. Our mission is to meet their energy needs in a safe, reliable, efficient and environmentally responsible manner. Our service area covers 63 counties and more than 500 towns, including the greater St. Louis area. For more information, visit AmerenMissouri.com.

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