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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 Commission File Number : 001-33146 Delaware ( State of incorporation ) Houston 601 Jefferson Street , Suite 3400 ( Address of principal executive offices ) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 Title of each class Common Stock par value $ 0.001 per share KBR , Inc. ( Exact name of registrant as specified in its charter ) Texas KBR 77002 ( Zip Code ) X ■ Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol KBR 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 ( 713 ) 753-2000 ( Registrant's telephone number including area code ) Name of each exchange on which registered New York Stock Exchange 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 ( I.R.S. Employer Identification No. ) No 冈 to 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 20-4536774 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 Non - accelerated filer Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes No 冈 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 As of February 10 , 2021 , there were 140,843,764 shares of KBR , Inc. Common Stock , par value $ 0.001 per share , outstanding . 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 > The aggregate market value of the voting stock held by non - affiliates on June 30 , 2020 was approximately $ 3.2 billion , determined using the closing price of shares of the registrant's common stock on the New York Stock Exchange on that date of $ 22.55 . DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant's Proxy Statement for its 2021 Annual Meeting of Stockholders are incorporated by reference into Part III of this report .