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( 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 Delaware ( State or other jurisdiction of incorporation or organization ) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K For the transition period from to Commission File Number : 001-39497 Large accelerated filer Non - accelerated filer UNITY SOFTWARE INC . ( Exact name of registrant as specified in its charter ) Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Common stock , $ 0.000005 par value Securities registered pursuant to Section 12 ( g ) of the Act : None X 30 3rd Street San Francisco , California 94103-3104 ( Address , including zip code , of principal executive offices ) ( 415 ) 539-3162 ( Registrant's telephone number , including area code ) Trading Symbol ( s ) U 27-0334803 ( I.R.S. Employer Identification No. ) Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes o No x Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Act . Yes o No x 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 x No o Name of each exchange on which registered The 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 x No o 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 . 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 . X ☐ 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 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 and non - voting common equity held by non - affiliates of the registrant , based on the closing price of a share of the registrant's common stock on December 31 , 2020 , as reported by the New York Stock Exchange on that date , was approximately $ 14.4 billion . The registrant has elected to use December 31 , 2020 , which was the last trading date of the registrant's most recently completed fiscal year , as the calculation date because the registrant was a privately held company on June 30 , 2020 ( the last business day of the registrant's second fiscal quarter ) . This calculation also does not reflect a determination that certain persons are affiliates of the registrant for any other purpose . As of February 26 , 2021 , there were 277,904,478 shares of the registrant's common stock outstanding .