# EDGAR Filing Document

**Accession Number:** 0001629750
**File Stem:** 0000950170-25-096089
**Filing Date:** 2025-7
**Character Count:** 7384
**Document Hash:** cc7703aa034597f90ba6ea6c3fb9cd0a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-096089.hdr.sgml**: 20250716

**ACCESSION NUMBER**: 0000950170-25-096089

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250716

**FILED AS OF DATE**: 20250716

**DATE AS OF CHANGE**: 20250716

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Carlos Fierro A
- **CENTRAL INDEX KEY:** 0001629750

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38441
- **FILM NUMBER:** 251126328

**BUSINESS ADDRESS:**
- **BUSINESS PHONE:** 713-241-6161

**MAIL ADDRESS:**
- **STREET 1:** 910 LOUISIANA STREET
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ChampionX Corp
- **CENTRAL INDEX KEY:** 0001723089
- **STANDARD INDUSTRIAL CLASSIFICATION:** CONSTRUCTION, MINING & MATERIALS HANDLING MACHINERY & EQUIP [3530]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 823066826
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 2445 TECHNOLOGY FOREST BLVD
- **STREET 2:** BUILDING 4, FLOOR 12
- **CITY:** THE WOODLANDS
- **STATE:** TX
- **ZIP:** 77381
- **BUSINESS PHONE:** (281) 403-5772

**MAIL ADDRESS:**
- **STREET 1:** 2445 TECHNOLOGY FOREST BLVD
- **STREET 2:** BUILDING 4, FLOOR 12
- **CITY:** THE WOODLANDS
- **STATE:** TX
- **ZIP:** 77381

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Apergy Corp
- **DATE OF NAME CHANGE:** 20180202

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Wellsite Corp
- **DATE OF NAME CHANGE:** 20171116

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Carlos Fierro A<br><sub>(Last) (First) (Middle)</sub><br>C/O CHAMPIONX CORP, 2445 TECHNOLOGY<br>FOREST BLVD., BLDG. 4, 12TH FLOOR<br><sub>(Street)</sub><br>THE WOODLANDS, TX 77381<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-07-16 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>ChampionX Corp [ CHX ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-07-16 |  | A<sup>(1)</sup> |  | 2771 | A | $0 | 13592 | D |  |
| Common Stock | 2025-07-16 |  | D<sup>(2)(3)</sup> |  | 13592 | D | <sup>(3)</sup> | 0 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) As contemplated by the Issuer's Amended and Restated 2018 Equity and Cash Incentive Plan and the Merger Agreement (as defined below), the Issuer issued to the Reporting Person shares of common stock of the Issuer ("Common Stock").

(2) Pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement"), dated as of April 2, 2024, by and among the Issuer, Schlumberger Limited ("SLB"), Sodium Holdco, Inc. and Sodium Merger Sub, Inc. ("Merger Sub"), pursuant to which Merger Sub merged with and into the Issuer with the Issuer continuing as the surviving corporation and an indirect wholly owned subsidiary of SLB (the "Merger").

(3) Pursuant to the Merger Agreement, among other things, (i) each outstanding share of Common Stock prior to the effective time of the Merger (the "Effective Time") was cancelled and converted into the right to receive 0.735 shares of SLB common stock ("SLB Common Stock" and such ratio, the "Exchange Ratio") and if applicable, cash in lieu of fractional shares and (ii) each deferred stock unit of the Issuer outstanding immediately prior to the Effective Time (a "DSU") was cancelled and converted into the right to receive a number of shares of SLB Common Stock equal to the product of (A) the number of shares of Common Stock underlying the DSU multiplied by (B) the Exchange Ratio, rounded down to the nearest whole share.

**Signature:** /s/ Julia Wright, as attorney-in-fact to Carlos A Fierro  
**Date:** 2025-07-16

### Remarks:

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**