Resignation of Francesco Ciabatti from the Board of Directors

Effective April 4, 2017 and to a stockholders agreement (the “Stockholders Agreement”) by and among ProPetro Holding Corp. (the “Company”) and Energy Capital Partners II, LP, Energy Capital Partners II-A, LP, Energy Capital Partners II-B, LP, energy Capital Partners II-C (Direct IP), LP, Energy Capital Partners II-D, LP and Energy Capital Partners II (Midland Co-Invest), LP (collectively, “Energy Capital Partners”), Francesco Ciabatti resigned as a director of the Company. Mr. Ciabatti has not resigned as a result of any disagreement with the Company on any matter related to the Company’s operations, policies or practices.

Appointment of Steven Beal to the Board of Directors

In connection with the resignation of Mr. Ciabatti and in accordance with the Stockholders Agreement, Steven Beal was appointed as a director by the Company’s Board of Directors on April 4, 2017. Mr. Beal was appointed Chairman of the Audit Committee, replacing Jack Moore, who shall continue to serve as a member of the Audit Committee. The Board of Directors has determined that Mr. Beal is an “audit committee financial expert.”

Mr. Beal, age 58, currently serves on the board of directors of Concho Resources Inc. (“Concho”) and First Financial Bankshares, Inc. Mr. Beal also served as a consultant to Concho from 2009 to 2013, and, prior to that, he served as the president and chief operating officer of Concho from its formation in 2004 until his retirement in 2009. Previously, Mr. Beal was a director and the executive vice president and chief financial officer of Concho Oil & Gas Corp. from its formation until becoming its president and chief operating officer in 2002, a position he held until 2004. Prior to Concho Oil & Gas Corp., Mr. Beal was a director and the vice president and chief financial officer of Concho Resources Inc., a predecessor company to Concho, from its formation in 1997 until its sale in 2001. From 1988 to 1997, Mr. Beal was employed by Parker & Parsley Petroleum company in a variety of capacities, including serving as senior vice president and chief financial officer. From 1981 to 1988, Mr. Beal was employed by the accounting firm currently known as PricewaterhouseCoopers. Mr. Beal is a graduate of the University of Texas with a Bachelor of Business Administration in accounting.

The Board of Directors determined that Mr. Beal has no relationships with the Company or its subsidiaries, either directly or indirectly, that would be inconsistent with a determination of independence under the applicable rules and regulations of the New York Stock Exchange and the United States Securities and Exchange Commission. Additionally, there are no family relationships between Mr. Beal and the executive officers or directors of the Company and no transactions that would require disclosure under Item 404(a) of Regulation S-K of the Securities Exchange Act of 1934.

Mr. Beal shall receive compensation for serving on the Board of Directors consistent with the Company’s Non-Employee Director Compensation Policy, filed as Exhibit 10.20 to the Company’s Registration Statement on Form S-1.

Approval of Bonuses for Certain Officers and Directors

In connection with the Company’s recently consummated initial public offering, the Company awarded discretionary cash bonuses to Dale Redman, Jeffrey Smith, David Sledge and Spencer Armour in the amount of $125,000, $75,000, $435,000 and $435,000, respectively. The bonuses will be paid within 30 days following April 4, 2017.

About PROPETRO HOLDING CORP. (NYSE:PUMP)

ProPetro Holding Corp. is an oilfield services company. The Company provides hydraulic fracturing and other complementary services to upstream oil and gas companies, which are engaged in the exploration and production (E&P) of North American unconventional oil and natural gas resources. The Company operates through seven segments: hydraulic fracturing, cementing, acidizing, coil tubing, flowback, surface drilling and Permian drilling. Its pressure pumping segment includes cementing and acidizing operations. The Company’s operations are focused in the Permian Basin. As of December 31, 2016, the Company’s fleet consisted of 10 hydraulic fracturing units with an aggregate of 420,000 hydraulic horsepower (HHP).

PROPETRO HOLDING CORP. (NYSE:PUMP) Recent Trading Information

PROPETRO HOLDING CORP. (NYSE:PUMP) closed its last trading session up +0.04 at 14.01 with 1,256,157 shares trading hands.