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

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of report (date of earliest event reported): May 19, 2026

ProPetro Holding Corp.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (432) 688-0012

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

On April 7, 2026, the Board of Directors of ProPetro Holding Corp. (the “Company”) approved, subject to stockholder approval, the Third Amended and Restated ProPetro Holding Corp. 2020 Long Term Incentive Plan (the “A&R LTIP”). As further described below in Item 5.07, the Company’s stockholders approved the A&R LTIP at the Company’s 2026 Annual Meeting of Stockholders (the “Annual Meeting”) on May 19, 2026. As a result, the A&R LTIP became effective on May 19, 2026.

The A&R LTIP increases the number of shares of common stock available for issuance thereunder by 3,540,000, from 10,520,000 to 14,060,000, subject to the share recycling and adjustment provisions of the A&R LTIP. All 14,060,000 shares will be available for issuance upon the exercise of incentive stock options. The A&R LTIP also extends the term of the plan to the tenth anniversary of the Annual Meeting.

Consistent with the predecessor plan, the A&R LTIP provides for potential grants of: (i) incentive stock options qualified as such under U.S. federal income tax laws (“ISOs”), (ii) stock options that do not qualify as ISOs, (iii) stock appreciation rights, (iv) restricted stock awards, (v) restricted stock units, (vi) awards of vested stock, (vii) dividend equivalents, (viii) other stock-based or cash awards, and (ix) substitute awards. Employees, non-employee directors, and other service providers of the Company and its affiliates are eligible to receive awards under the A&R LTIP. Consistent with the predecessor plan, the A&R LTIP provides that, subject to certain exceptions, in a single calendar year, a non-employee director may not be paid compensation, whether denominated in cash or awards, for such individual’s service on the Board in excess of $500,000.

The material terms of the A&R LTIP are described in more detail in the section entitled “Proposal 3: Approval of The Third Amended and Restated 2020 Long Term Incentive Plan” of the Company’s definitive proxy statement for the Annual Meeting, which was filed with the United States Securities and Exchange Commission on April 8, 2026 and is incorporated by reference herein (the “Proxy Statement”).

The foregoing description of the A&R LTIP is qualified in its entirety by reference to the A&R LTIP, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and incorporated by reference herein.

At the Company’s Annual Meeting, on May 19, 2026, the Company’s stockholders elected each of the Company’s eight director nominees to serve until the Company’s 2027 Annual Meeting of Stockholders. Further, the Company’s stockholders approved on an advisory basis the compensation paid to the Company’s named executive officers, as disclosed in the Proxy Statement. The Company’s stockholders also approved the A&R LTIP and the ratification of the appointment of RSM US LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026.

The final results of the voting on each matter of business at the Annual Meeting are as follows:

Proposal 1 – Election of eight director nominees to serve for a one-year term.

Proposal 2 – Approval, on an advisory basis, of the compensation of the Company’s named executive officers.

Proposal 3 – Approval of the Third Amended and Restated 2020 Long-Term Incentive Plan.

Proposal 4 – Ratification of the appointment of RSM US LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026.

(d)       Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.