Sec Form 4 Filing - THRC Holdings, LP @ ProFrac Holding Corp. - 2025-08-14

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person THRC Holdings, LP 2. Issuer Name and Ticker or Trading Symbol ProFrac Holding Corp. [ ACDC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 17018 INTERSTATE 20 3. Date of Earliest Transaction (MM/DD/YY) 08/14/2025 (Street) CISCO, TX76437 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A common stock, par value $0.01 per share 08/14/2025 P 2,500,000 A $ 4 ( 1 ) 82,389,657 ( 2 ) D ( 3 ) ( 4 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other THRC Holdings, LP 17018 INTERSTATE 20 CISCO, TX76437 X THRC Management, LLC 17018 IH 20 CISCO, TX76437 X Wilks Dan H. 17018 INTERSTATE 20 CISCO, TX76437 X Signatures /s/ Robert B. Early, Attorney-in-Fact 08/18/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The reported price in Column 4 is the offering price of a public offering of Class A Common Stock of the Issuer that closed on August 14, 2025 under an shelf registration as filed on Form S-3. (Please refer to the Issuer's filing on Form 8-K dated August 14, 2025.) ( 2 )THRC Holdings LP, a Texas limited partnership ("THRC"), directly owns (i) 80,623,143 shares of Class A Common Stock of Issuer, (ii) 30,000 shares of Series A Redeemable Convertible Preferred Stock that are convertible into 1,723,770 shares of Class A Common Stocka, and (iii) warrants to purchase 42,744 shares of Class A Common Stock. (Note: The number of Class A Common shares that the Preferred Stock may be converted into has increased by 33,799 subsequent to the previous Form 4 filing due the a PIK dividend provision of the Preferred Stock.) ( 3 )THRC Holdings, LP, a Texas limited partnership ("THRC"), directly holds the securities of the Issuer. THRC Management, LLC, a Texas limited liability company ("THRC Management"), as General Partner of THRC, has exclusive voting and investment control over the shares of the Issuer's Class A common stock held by THRC, and therefore may be deemed to beneficially own such shares. Dan Wilks, as sole manager of THRC Management, may be deemed to exercise voting and investment power over the shares of the Issuer's Class A common stock directly owned by THRC, and therefore may be deemed to beneficially own such shares. ( 4 )Each Reporting Person disclaims beneficial ownership of all equity securities reported herein except to the extent of its 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.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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