Sec Form 4 Filing - Zweig Jordan @ ChampionX Corp - 2024-12-20

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 Zweig Jordan 2. Issuer Name and Ticker or Trading Symbol ChampionX Corp [ CHX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP & Chief HR Officer (Last) (First) (Middle) C/O CHAMPIONX CORP, 2445 TECHNOLOGY, FOREST BLVD., BUILDING 4, FLOOR 12 3. Date of Earliest Transaction (MM/DD/YY) 12/20/2024 (Street) THE WOODLANDS, TX77381 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ 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 Common Stock 12/20/2024 F 9,901 ( 1 ) D $ 25.79 64,639 D

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

< td>Zweig Jordan C/O CHAMPIONX CORP, 2445 TECHNOLOGY FOREST BLVD., BUILDING 4, FLOOR 12 THE WOODLANDS, TX77381 Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other SVP & Chief HR Officer Signatures /s/ Julia Wright, as attorney-in-fact 12/26/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents stock withheld to cover taxes resulting from the settlement of previously reported restricted stock unit awards ("RSUs") in connection with the Issuer's mitigation of the potential impact to certain employees under Sections 280G and 4999 of the U.S. Internal Revenue Code, as amended, resulting from the treatment of potential payments that may be made in connection with the merger between the Company, Schlumberger Limited, a Curacao corporation ("SLB"), Sodium Holdco, Inc., a Delaware corporation and indirect wholly owned subsidiary of SLB ("Sodium US"), and Sodium Merger Sub, Inc., a Delaware corporation and direct wholly owned subsidiary of SLB and Sodium US ("Merger Sub"), pursuant to which Merger Sub will be merged with and into the Issuer, with the Issuer surviving the merger as an indirect wholly owned subsidiary of SLB. The restricted stock remains subject to the same vesting schedules as the corresponding restricted stock unit awards.

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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