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( Mark One ) 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 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 Delaware ( State or other jurisdiction of incorporation or organization ) Commission file number 1-8729 UNISYS CORPORATION ( Exact name of registrant as specified in its charter ) to Title of each class Common Stock , par value $ .01 Securities registered pursuant to Section 12 ( g ) of the Act : 801 Lakeview Drive , Suite 100 Blue Bell , Pennsylvania 19422 ( 215 ) 986-4011 ( Address , zip code and telephone number , including area code of principal executive offices ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) UIS 38-0387840 ( I.R.S. Employer Identification No. ) 1 Name of each exchange on which registered New York Stock Exchange None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . 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 Yes Yes - No > 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 such files ) . > Yes No