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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 to Commission File Number : 001-34927 Compass Diversified Holdings ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) Commission File Number : 001-34926 Delaware ( State or other jurisdiction of incorporation or organization ) Compass Group Diversified Holdings LLC ( Exact name of registrant as specified in its charter ) 301 Riverside Avenue , Second Floor ( Address of principal executive office ) Title of Each Class Shares representing beneficial interests in Compass Diversified Holdings ( " common shares " ) Series A Preferred Shares representing beneficial interests in Compass Diversified Holdings Series B Preferred Shares representing beneficial interests in Compass Diversified Holdings ( I.R.S. Employer Identification No. ) ( 203 ) 221-1703 ( Registrants ' telephone number , including area code ) Series C Preferred Shares representing beneficial interests in Compass Diversified Holdings 57-6218917 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) CODI CODI PRA Westport , CT CODI PR B CODI PR C 20-3812051 ( I.R.S. Employer Identification No. ) 06880 ( Zip Code ) Name of Each Exchange on Which Registered New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange