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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - K > ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 or TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-14303 AMERICAN AXLE & MANUFACTURING HOLDINGS , INC . ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) One Dauch Drive , Detroit , Michigan ( Address of principal executive offices ) Title of Each Class 38-3161171 ( I.R.S. Employer Identification No. ) 48211-1198 ( Zip Code ) 313-758-2000 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) Name of Each Exchange on Which Registered New York Stock Exchange Common Stock , Par Value $ 0.01 Per Share AXL Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes > No ☐ Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Exchange Act . Yes □ No ☑ Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes > No ☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( § 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes > No ☐ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act ) . Large accelerated filer ☑ Accelerated filer ☐ Non - accelerated filer ☐ Smaller reporting company ☐ Emerging growth 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 Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report ☑ Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes ☐ No ☑ The closing price of the Common Stock on June 30 , 2020 as reported on the New York Stock Exchange was $ 7.60 per share and the aggregate market value of the registrant's Common Stock held by non - affiliates was approximately $ 850.4 million . As of February 9 , 2021 , the number of shares of the registrant's Common Stock , $ 0.01 par value , outstanding was 113,295,610 shares . Documents Incorporated by Reference Portions of the registrant's Annual Report to Stockholders for the year ended December 31 , 2020 and Proxy Statement for use in connection with its Annual Meeting of Stockholders to be held on May 6 , 2021 , to be filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after December 31 , 2020 , are incorporated by reference in Part I ( Items 1 , 1A , 1B , 2 , 3 and 4 ) , Part II ( Items 5 , 6 , 7 , 7A , 8 , 9 , 9A and 9B ) , Part III ( Items 10 , 11 , 12 , 13 and 14 ) and Part IV ( Item 15 ) of this Report .