# EDGAR Filing Document

**Accession Number:** 0001680247
**File Stem:** 0001193125-26-232878
**Filing Date:** 2026-5
**Character Count:** 14846
**Document Hash:** 12408cad981f6c680862f1f15016c31a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-232878.hdr.sgml**: 20260520

**ACCESSION NUMBER**: 0001193125-26-232878

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260520

**DATE AS OF CHANGE**: 20260520

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ProPetro Holding Corp.
- **CENTRAL INDEX KEY:** 0001680247
- **STANDARD INDUSTRIAL CLASSIFICATION:** OIL, GAS FIELD SERVICES, NBC [1389]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 263685382
- **STATE OF INCORPORATION:** TX
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-89924
- **FILM NUMBER:** 261005230

**BUSINESS ADDRESS:**
- **STREET 1:** P.O. BOX 873
- **CITY:** MIDLAND
- **STATE:** TX
- **ZIP:** 79702
- **BUSINESS PHONE:** (432) 688-0012

**MAIL ADDRESS:**
- **STREET 1:** P.O. BOX 873
- **CITY:** MIDLAND
- **STATE:** TX
- **ZIP:** 79702
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** EXXON MOBIL CORP
- **CENTRAL INDEX KEY:** 0000034088
- **STANDARD INDUSTRIAL CLASSIFICATION:** PETROLEUM REFINING [2911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 135409005
- **STATE OF INCORPORATION:** NJ
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 22777 SPRINGWOODS VILLAGE PARKWAY
- **CITY:** SPRING
- **STATE:** TX
- **ZIP:** 77389-1425
- **BUSINESS PHONE:** 9729406000

**MAIL ADDRESS:**
- **STREET 1:** 22777 SPRINGWOODS VILLAGE PARKWAY
- **CITY:** SPRING
- **STATE:** TX
- **ZIP:** 77389-1425

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** EXXON CORP
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** STANDARD OIL CO OF NEW JERSEY
- **DATE OF NAME CHANGE:** 19721123

### Attached PDF Documents

**Attachment 1:** `ck0000000000-ex99_6.pdf`

_No text found in this document._

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 2)**

**ProPetro Holding Corp.**

*(Name of Issuer)*

**Common Stock, $0.001 par value per share**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**James R. Chapman**<br>Exxon Mobil Corporation<br>22777 Springwoods Village Parkway<br>Spring TX 77389<br>972-940-6000

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**05/18/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Exxon Mobil Corporation** | Name of reporting person<br>**Exxon Mobil Corporation** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**NEW JERSEY** | Citizenship or place of organization<br>**NEW JERSEY** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**0.00** | Aggregate amount beneficially owned by each reporting person<br>**0.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0%** | Percent of class represented by amount in Row (11)<br>**0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Pioneer Natural Resources Company** | Name of reporting person<br>**Pioneer Natural Resources Company** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**0.00** | Aggregate amount beneficially owned by each reporting person<br>**0.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0%** | Percent of class represented by amount in Row (11)<br>**0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** Row 1: Pioneer Natural Resources Company, a Delaware corporation ("Pioneer"), is a direct wholly owned subsidiary of Exxon Mobil Corporation ("Exxon Mobil").

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Pioneer Natural Resources USA, Inc.** | Name of reporting person<br>**Pioneer Natural Resources USA, Inc.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**0.00** | Aggregate amount beneficially owned by each reporting person<br>**0.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0%** | Percent of class represented by amount in Row (11)<br>**0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** Row 1: Pioneer Natural Resources USA, Inc., a Delaware corporation ("Pioneer USA"), is a direct wholly owned subsidiary of Pioneer.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Pioneer Natural Resources Pumping Services LLC** | Name of reporting person<br>**Pioneer Natural Resources Pumping Services LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**0.00** | Aggregate amount beneficially owned by each reporting person<br>**0.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0%** | Percent of class represented by amount in Row (11)<br>**0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Row 1: Pioneer Natural Resources Pumping Services LLC, a Delaware limited liability company ("Pioneer Pumping Services" and, together with Exxon Mobil, Pioneer and Pioneer USA, the "Reporting Persons"), is a direct wholly owned subsidiary of Pioneer USA.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, $0.001 par value per share

**(b) Name of Issuer:**
ProPetro Holding Corp.

**(c) Address of Issuer's Principal Executive Offices:**
One Marienfeld Place, 110 N. Marienfeld Street, Suite 300, Midland, TX, 79701

Explanatory Note: This Amendment No. 2 ("Amendment No. 2") is being filed by Exxon Mobil Corporation ("Exxon Mobil"), Pioneer Natural Resources Company ("Pioneer"), Pioneer Natural Resources USA, Inc. ("Pioneer USA") and Pioneer Natural Resources Pumping Services LLC ("Pioneer Pumping Services" and, together with Exxon Mobil, Pioneer and Pioneer USA, the "Reporting Persons"), and amends the Schedule 13D filed with the U.S. Securities and Exchange Commission on January 7, 2019, as amended by Amendment No. 1 filed on May 3, 2024 (as so amended prior to the date hereof, the "Original Schedule 13D" and, as amended by this Amendment No. 2, the "Schedule 13D"), by Pioneer, Pioneer USA and Pioneer Pumping Services relating to shares of common stock, par value $0.001 per share ("Common Stock"), of ProPetro Holding Corp., a Delaware corporation (the "Issuer"). Information reported in the Original Schedule 13D remains in effect except to the extent that it is amended, restated or superseded by information contained in this Amendment No. 2. Capitalized terms used but not defined in this Amendment No. 2 have the respective meanings set forth in the Original Schedule 13D.

**Item 4. Purpose of Transaction**

Item 4 is hereby amended and supplemented to include the following:

On May 20, 2026, the Reporting Persons monetized their investment via a sale of 16,600,000 shares of Common Stock of the Issuer in a block trade pursuant to Rule 144 of the Securities Act of 1933, at a price of $16.66 per share.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The responses of the Reporting Persons to Rows (7) through (11), and (13) of the cover pages of this Schedule 13D are incorporated herein by reference.

**(b)**
The responses of the Reporting Persons to Rows (7) through (11), and (13) of the cover pages of this Schedule 13D are incorporated herein by reference.

**(c)**
Except as set forth in Item 4 of this Amendment No. 2, which information is incorporated by reference into this Item 5(c), the Reporting Persons have not effected any transactions of the Common Stock during the 60 days preceding the date of this report.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Exxon Mobil Corporation

**Signature:** /s/ James R. Chapman

**Name/Title:** James R. Chapman, Vice President, Treasurer and Investor Relations

**Date:** 05/20/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Pioneer Natural Resources Company

**Signature:** /s/ Daniel A. Bates

**Name/Title:** Daniel A. Bates, Executive Vice President

**Date:** 05/20/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Pioneer Natural Resources USA, Inc.

**Signature:** /s/ Daniel A. Bates

**Name/Title:** Daniel A. Bates, Executive Vice President

**Date:** 05/20/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Pioneer Natural Resources Pumping Services LLC

**Signature:** /s/ Daniel A. Bates

**Name/Title:** Daniel A. Bates, Executive Vice President

**Date:** 05/20/2026