X0306 4 2022-05-17 0 0001881487 ProFrac Holding Corp. PFHC 0001641794 Wilks Farris 17018 INTERSTATE 20 CISCO TX 76437 1 0 1 1 Director by Deputization 0001928013 Farris & Jo Ann Wilks 2022 Family Trust 17018 INTERSTATE 20 CISCO TX 76437 1 0 1 1 Director by Deputization 0001928401 Wilks Jo Ann 17018 INTERSTATE 20 CISCO TX 76437 1 0 1 1 Director by Deputization Class A common stock, par value $0.01 per share 2022-05-17 4 A 0 977778 18.00 A 977778 I See Footnote Class A common stock, par value $0.01 per share 10732715 I See Footnote Reflects shares of Class A common stock, par value $0.01 per share, acquired in connection with the Issuer's initial public offering, which closed on May 17, 2022. Reflects 977,778 shares of Class A common stock held directly by FARJO Holdings, LP ("FARJO Holdings"), a Texas limited partnership. The General Partner of FARJO Holdings is FARJO Management, LLC ("FARJO Management"), a Texas limited liability company. FARJO Management, as General Partner of FARJO Holdings, has exclusive voting and investment control over the shares of Class A common stock held by FARJO Holdings, and therefore may be deemed to beneficially own such shares. Farris C. Wilks, as sole manager of FARJO Management, may be deemed to exercise voting and investment power over the shares of the Issuer's Class A common stock directly owned by FARJO Holdings, and therefore may be deemed to beneficially own such shares. Reflects 10,732,715 shares of Class A common stock held directly by the Farris and Jo Ann Wilks 2022 Family Trust, a Texas irrevocable trust ("Farris Trust"). The number of shares owned by the Farris Trust is subject to change based on an appraisal. Farris C. Wilks serves as a trustee of the Farris Trust and, in such capacity has voting and dispository power over the shares of Class A common stock owned by such trust, and therefore may be deemed to beneficially own such shares. Jo Ann Wilks serves as a trustee of the Farris Trust and, in such capacity has dispository power over the shares of Class A common stock owned by such trust, and therefore may be deemed to beneficially own such shares. (Continued from footnote 3) Each Reporting Person disclaims beneficial ownership of all equity securities reported herein except to the extent of such person's respective pecuniary interest therein, and the filing of this Form 4 shall not be construed as an admission that any such Reporting Person is the beneficial owner of any equity securities covered by this Form 4. /s/ Robert J. Willette, Attorney-In-Fact 2022-05-19 /s/ Robert J. Willette, Attorney-In-Fact 2022-05-19 /s/ Robert J. Willette, Attorney-In-Fact 2022-05-19