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Washington, D.C. 20549









Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934


Date of report (Date of earliest event reported): June 22, 2021




Commission File Number

Exact Name of Registrant as Specified in Charter;

State of Incorporation;

Address and Telephone Number

IRS Employer

Identification Number




Ameren Corporation

(Missouri Corporation)

1901 Chouteau Avenue

St. Louis, Missouri 63103

(314) 621-3222





Union Electric Company

(Missouri Corporation)

1901 Chouteau Avenue

St. Louis, Missouri 63103

(314) 621-3222



Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrants 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))


Securities registered pursuant to Section 12(b) of the Act:


Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock, $0.01 par value per share


New York Stock Exchange


Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).


  Emerging Growth Company  
Ameren Corporation ¨  
Union Electric Company ¨  


If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.


Ameren Corporation ¨  
Union Electric Company ¨  




Co-Registrant CIK
Co-Registrant Amendment Flag
Co-Registrant Form Type
Co-Registrant DocumentperiodEndDate
Co-Registrant Written Commuunications
Co-Registrant Solicitating Materials
Co-Registrant PreCommencement Tender Offer
Co-Registrant Entity PreCommencement Issuer Tender Offer





ITEM 8.01Other Events.


On June 22, 2021, Union Electric Company, doing business as Ameren Missouri (“Ameren Missouri”), a subsidiary of Ameren Corporation, sold $525,000,000 million principal amount of its 2.15% First Mortgage Bonds due 2032 (the “Bonds”). The Bonds were offered pursuant to a Registration Statement on Form S-3 (File No. 333-249475-01), which became effective on October 14, 2020, and a Prospectus Supplement dated June 9, 2021, to a Prospectus dated October 14, 2020. Ameren Missouri received net offering proceeds of approximately $521.0 million, before expenses, upon closing of the transaction.


This Current Report on Form 8-K is being filed to report as exhibits certain documents in connection with the offering of the Bonds.


ITEM 9.01Financial Statements and Exhibits.




Exhibit Number   Title
1   Underwriting Agreement, dated June 9, 2021, between Ameren Missouri and the several underwriters named therein, for whom BofA Securities, Inc., Goldman Sachs & Co. LLC, Mizuho Securities USA LLC and SMBC Nikko Securities America, Inc. are acting as representatives.
4.1*  Indenture of Mortgage and Deed of Trust, dated June 15, 1937, from Ameren Missouri to The Bank of New York Mellon, as successor trustee, as amended May 1, 1941, and Second Supplemental Indenture dated May 1, 1941 (Exhibit B-1, File No. 2-4940).
4.2   Supplemental Indenture, dated June 1, 2021, by and between Ameren Missouri and The Bank of New York Mellon, as successor trustee, relating to the 2.15% First Mortgage Bonds due 2032.
5.1   Opinion of Craig W. Stensland, Esq., Senior Corporate Counsel, Ameren Services Company, regarding the legality of the Bonds (including consent).
5.2   Opinion of Morgan, Lewis & Bockius LLP regarding the legality of the Bonds (including consent).
104   Cover Page Interactive Data File (formatted as Inline XBRL).



* Incorporated by reference as indicated.




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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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.


  By: /s/ Michael L. Moehn
  Name:      Michael L. Moehn
  Title:        Executive Vice President and Chief Financial Officer
  By: /s/ Martin J. Lyons, Jr.
  Name:     Martin J. Lyons, Jr.
  Title:       Chairman and President
Date: June 22, 2021  


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