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Table of Contents ( Mark One ) 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 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K □ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from 6801 Rockledge Drive , Maryland ( State or other jurisdiction of incorporation or organization ) Bethesda , ( Address of principal executive offices ) Title of each class Common Stock , $ 1 par value to Commission file number 1-11437 LOCKHEED MARTIN CORPORATION ( Exact name of registrant as specified in its charter ) Maryland ( 301 ) 897-6000 ( Registrant's telephone number , including area code ) 52-1893632 ( I.R.S. Employer Identification No. ) 20817 ( Zip Code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol Name LMT 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 □ No No 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 □ 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 . 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 aggregate market value of voting and non - voting common stock held by non - affiliates of the registrant computed by reference to the last sales price of such stock , as of the last business day of the registrant's most recently completed second fiscal quarter , which was June 26 , 2020 , was approximately $ 99.3 billion . There were 280,103,431 shares of our common stock , $ 1 par value per share , outstanding as of January 22 , 2021 . DOCUMENTS INCORPORATED BY REFERENCE Portions of Lockheed Martin Corporation's 2021 Definitive Proxy Statement are incorporated by reference into Part III of this Form 10 - K . The 2021 Definitive Proxy Statement will be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates .