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Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 Form 10 - K ( Mark One ) Delaware 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 ( State or other jurisdiction of incorporation or organization ) Commission File Number 001-33160 Spirit AeroSystems Holdings , Inc. ( Exact name of registrant as specified in its charter ) to 3801 South Oliver Wichita , Kansas 67210 ( Address of principal executive offices and zip code ) Registrant's telephone number , including area code : ( 316 ) 526-9000 Large accelerated filer X 20-2436320 Securities registered pursuant to Section 12 ( g ) of the Act : None . Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Class A common stock , par value $ 0.01 per share Trading symbol SPR SPR Stock Purchase Rights ( I.R.S. Employer Identification No. ) Accelerated filer 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 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 Name of each exchange on which registered New York Stock Exchange 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 Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , or a smaller reporting company . See the definitions of " large accelerated filer , ” “ accelerated filer " and " smaller reporting company " in Rule 12b - 2 of the Exchange Act . Non - accelerated filer Smaller reporting company Emerging Growth Company If an emerging growth company , indicate by check mark whether 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 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.x Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes No x The aggregate market value of the voting stock held by non - affiliates of the registrant , based on the closing price of the class A common stock on July 02 , 2020 , as reported on the New York Stock Exchange was approximately $ 2,466,868,099 . As of February 11 , 2021 , the registrant had outstanding 105,420,191 shares of class A common stock , $ 0.01 par value per share . DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant's Proxy Statement for the 2020 Annual Meeting of Stockholders to be filed not later than 120 day after the end of the fiscal year covered by this Annual Report on Form 10 - K are incorporated herein by reference in Part III of this Annual Report on Form 10 - K .