ProPetro Holding Corp. (NYSE:PUMP) (“ProPetro”)

ProPetro is a Midland, Texas-based oilfield services company providing pressure pumping and other complementary services to leading upstream oil and gas companies engaged in the exploration and production of North American unconventional oil and natural gas resources.

Silvertip Completion Services (“Silvertip”)

Silvertip is a premier provider of wireline and pumpdown services in the Permian Basin. Silvertip was founded in 2017 as a greenfield operation, purchasing all brand-new equipment, and currently owns and operates 23 wireline units and 15 frac pumps. Silvertip is headquartered in Midland, Texas and has over 320 employees.

Lime Rock Partners, LLC (“Lime Rock”)

Lime Rock is a creative private equity investment partner in building differentiated oil & gas businesses, side by side, with entrepreneurs every day. The Lime Rock team brings together specialist finance and operating expertise, technology leadership, people-centered strategies and patient hard work with the goal of helping its investors and portfolio company partners profit from operational growth.

PPHB, LP (“PPHB”)

PPHB is an independent investment banking firm providing financial advisory services to middle market companies that offer products and services to the following end markets: