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冈 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 fiscal year ended December 31 , 2020 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 ) Title of Each Class Class A Common Stock , $ 0.001 par value Class B Common Stock , $ 0.001 par value OR to Commission File Number 001-09553 ViacomCBS Inc. ( Exact name of registrant as specified in its charter ) 1515 Broadway New York , New York 10036 ( 212 ) 258-6000 ( Address , including zip code , and telephone numbers , including area code , of registrant's principal executive offices ) ( I.R.S. Employer Identification No. ) Securities Registered Pursuant to Section 12 ( b ) of the Act : Trading Symbols VIACA VIAC 04-2949533 Name of Each Exchange on Which Registered The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC Securities Registered Pursuant to Section 12 ( g ) of the Act : None ( Title of Class ) No Indicate by check mark if the registrant is a well - known seasoned issuer ( as defined in Rule 405 of the Securities Act of 1933 ) . Yes Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Securities Exchange Act of 1934. 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 during the preceding 12 months ( or for such shorter period that 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 Securities Exchange Act of 1934 . 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 Securities Exchange Act of 1934 ) . Yes No As of June 30 , 2020 , which was the last business day of the registrant's most recently completed second fiscal quarter , the market value of the shares of the registrant's Class A Common Stock , $ 0.001 par value ( " Class A Common Stock " ) , held by non - affiliates was approximately $ 275,618,509 ( based upon the closing price of $ 25.60 per share as reported by The Nasdaq Stock Market LLC on that date ) and the market value of the shares of the registrant's Class B Common Stock , $ 0.001 par value ( " Class B Common Stock " ) , held by non - affiliates was approximately $ 12,618,241,490 ( based upon the closing price of $ 23.32 per share as reported by The Nasdaq Stock Market LLC on that date ) ; and the aggregate market value of the shares of both Class A Common Stock and Class B Common Stock held by non - affiliates was $ 12,893,859,999 . As of February 19 , 2021 , 52,066,317 shares of Class A Common Stock and 567,539,816 shares of Class B Common Stock were outstanding . DOCUMENTS INCORPORATED BY REFERENCE Portions of ViacomCBS Inc.'s Notice of 2021 Annual Meeting of Stockholders and Proxy Statement to be filed with the Securities and Exchange Commission pursuant to Regulation 14A of the Securities Exchange Act of 1934 ( Part III ) .