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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 SUPERIOR INDUSTRIES INTERNATIONAL , INC . ( Exact Name of Registrant as Specified in Its Charter ) Delaware ( State or Other Jurisdiction of Incorporation or Organization ) 26600 Telegraph Road , Suite 400 Southfield , Michigan ( Address of Principal Executive Offices ) For the fiscal year ended December 31 , 2020 Commission file number : 1-6615 Title of Each Class Common Stock , $ 0.01 par 48033 ( Zip Code ) Registrant's Telephone Number , Including Area Code : ( 248 ) 352-7300 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) SUP 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 Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes 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 Large accelerated filer Non - accelerated filer value 95-2594729 ( I.R.S. Employer Identification No. ) 风口 Name of Each Exchange on Which Registered New York Stock Exchange 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 No X No X 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 the definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . 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 . Yes No Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes □ No X The aggregate market value of the registrant's $ 0.01 par value common equity held by non - affiliates as of the last business day of the registrant's most recently completed second quarter was $ 43,506,281 , based on a closing price of $ 1.70 . On February 26 , 2021 , there were 25,591,930 shares of common stock issued and outstanding . DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant's 2021 Proxy Statement , to be filed with the Securities and Exchange Commission within 120 days after the close of the registrant's fiscal year , are incorporated by reference into Part III of this Form 10 - K .