Page 1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K ( 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 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Commission File Number 1-12386 LEXINGTON REALTY TRUST ( Exact name of registrant as specified in its charter ) Maryland ( State or other jurisdiction of incorporation of organization ) Title of each class Shares of beneficial interest , par value $ 0.0001 per share , classified as Common Stock One Penn Plaza , Suite 4015 , New York , NY 10119-4015 ( Address of principal executive offices ) ( zip code ) ( 212 ) 692-7200 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol LXP 6.50 % Series C Cumulative Convertible Preferred Stock , par value $ 0.0001 per share to LXPPRC 13-3717318 ( I.R.S. Employer Identification No. ) Name of each exchange on which registered New York Stock Exchange New York Stock Exchange 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 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 and post such files ) . Yes > No 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 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 0 Emerging growth company 0 Accelerated filer ☐ Non - accelerated filer Smaller reporting company Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes No The aggregate market value of the shares of beneficial interest , par value $ 0.0001 per share , classified as common stock ( " common shares " ) of Lexington Realty Trust held by non - affiliates as of June 30 , 2020 , which was the last business day of the registrant's most recently completed second fiscal quarter , was 2,857,720,689 based on the closing price of the common shares on the New York Stock Exchange as of that date , which was $ 10.55 per share . Number of common shares outstanding as of February 16 , 2021 was 277,554,740 . DOCUMENTS INCORPORATED BY REFERENCE Certain information contained in the Definitive Proxy Statement for Lexington Realty Trust's Annual Meeting of Shareholders , to be held on May 18 , 2021 , is incorporated by reference in this Annual Report on Form 10 - K in response to Part III , Items 10 , 11 , 12 , 13 and 14 , which will be filed with the Securities and Exchange Commission not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10 - K .