Sec Form 4 Filing - THRC Holdings, LP @ U.S. WELL SERVICES HOLDINGS, LLC - 2022-11-01

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 U.S. WELL SERVICES HOLDINGS, LLC [ USWS] 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) 11/01/2022 (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 $0.0001 per share 11/01/2022 M 1,125,194( 1 ) A 1,134,762 D( 6 ) Class A Common Stock, par value $0.0001 per share 11/01/2022 M 8,578,481( 2 ) A 9,713,243 D( 6 ) Class A Common Stock, par value $0.0001 per share 11/01/2022 D 9,713,243( 3 ) D 0 D( 6 )

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 Series A Redeemable Convertible Preferred Stock ( 1 ) 11/01/2022 M 1,125,194( 1 ) ( 1 ) ( 1 ) Class A Common Stock 1,125,194 ( 1 ) 0 D( 6 ) 16.0% Convertible Senior Secured (Third Lien) PIK Note ( 2 ) 11/01/2022 M 8,578,481( 2 ) ( 2 ) ( 2 ) Class A Common Stock 8,578,481 ( 2 ) 0 D( 6 ) Warrants (Right to Buy) $ 160.86 11/01/2022 D 2,666,669( 4 ) ( 4 ) ( 4 ) Class A Common Stock 2,666,669 ( 4 ) 0 D( 6 ) Warrants (Right to Buy) $ 1.1 11/01/2022 D 6,976,744( 5 ) ( 5 ) ( 5 ) Class A Common Stock 6,976,744 ( 5 ) 0 D( 6 )

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 INTERSTATE 20 CISCO, TX76437 X Wilks Dan H. 17018 INTERSTATE 20 CISCO, TX76437 X Signatures s/ Robert J. Willette, Attorney-in-Fact 11/09/2022 Signature of Reporting Person Date s/ Robert J. Willette, Attorney-in-Fact 11/09/2022 Signature of Reporting Person Date s/ Robert J. Willette, Attorney-in-Fact 11/09/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Reflects the conversion of shares of Series A Redeemable Convertible Preferred Stock of the Issuer ("Series A Preferred Shares") held by THRC Holdings, LP ("THRC Holdings") into a number of shares of Class A Common Stock of the Issuer ("Class A Shares") equal to the quotient of (i) the liquidation preference of the Series A Preferred Shares as of the date of conversion ($8,242,540) and (ii) $7.32 pursuant to the Agreement and Plan of Merger by and among the Issuer, ProFrac Holding Corp. and Thunderclap Merger Sub I, Inc, dated as of June 21, 2022 (the "Merger Agreement"). ( 2 )Reflects the conversion of those outstanding convertible promissory notes held by THRC Holdings into a number of Class A Shares equal to the quotient of (i) the aggregate principal amount, plus accrued and unpaid interest, owing under such note through July 9, 2022 ($62,794,480.19), and (ii) $7.32 pursuant to the Merger Agreement. ( 3 )Reflects the conversion pursuant to the Merger Agreement of Class A Shares held by THRC Holdings into 0.3366 shares of Class A Common Stock of ProFrac Holding Corp. ("PFHC Shares"). The closing price of PFHC Shares on November 1, 2022 was $22.08 per share. ( 4 )Reflects the conversion of warrants of the Issuer held by THRC Holdings pursuant to the Merger Agreement into a number of warrants to acquire PFHC Shares equal to the product of (i) the number of Class A Shares for which such warrant was exercisable as of immediately prior to the consummation of the transactions contemplated by the Merger Agreement, multiplied by (ii) 0.3366 (with an exercise price equal to $477.89 per PFHC Share). The closing price of PFHC Shares on November 1, 2022, was $22.08 per share. ( 5 )Reflects the disposition of warrants of the Issuer held by THRC Holdings to ProFrac Holding Corp. pursuant to a Warrant Purchase Agreement entered into in connection with the Merger Agreement at a purchase price of $0.176 per warrant. The closing price of PFHC Shares on November 1, 2022, was $22.08 per share. ( 6 )THRC Holdings directly holds the securities of the Issuer. THRC Management, LLC ("THRC Management"), a Texas limited liability company, as General Partner of THRC Holdings, has exclusive voting and investment control over the shares of Class A common stock held by THRC Holdings, 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 Holdings, and therefore may be deemed to beneficially own such shares. Each Reporting Person disclaims beneficial ownership of all equity securities reported herein except to the extent of their 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).

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