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Table of Contents ( 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 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Commission File Number : 001-38390 Delaware ( State or other jurisdiction of incorporation or organization ) Title of each class Class A Common Stock , par value $ 0.01 Large accelerated filer Non - accelerated filer FORM 10 - K 920 Memorial City Way , Suite 300 Houston , Texas ( Address of principal executive offices ) or None . ✔ to Cactus , Inc. ( Exact name of registrant as specified in its charter ) 35-2586106 ( I.R.S. Employer Identification No. ) ( 713 ) 626-8800 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act Trading Symbol ( s ) WHD Name 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 during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No 77024 ( Zip code ) Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , 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 . of each exchange on which registered New York Stock Exchange Accelerated filer Smaller reporting company Emerging growth company DOCUMENTS INCORPORATED BY REFERENCE 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 Exchange Act ) . Yes No As of June 30 , 2020 , the aggregate market value of the common stock of the registrant held by non - affiliates of the registrant was $ 1.0 billion . As of February 23 , 2021 , the registrant had 47,894,842 shares of Class A common stock , $ 0.01 par value per share , and 27,655,077 shares of Class B common stock , $ 0.01 par value per share , outstanding .