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

ProPetro is a Midland, Texas-based provider of premium completion services to leading upstream oil and gas companies engaged in the exploration and production of North American unconventional oil and natural gas resources.

Par Five Energy Services LLC (“Par Five”)

Par Five is a leading provider of cementing services to upstream oil and gas operators in the Delaware Basin. Par Five currently owns and manages 14 cementing spreads and has a state-of-the-art bulk plant located at its headquarters facility in Artesia, New Mexico. Par Five recently finalized a substantial expansion of its bulk plant that nearly doubles the facility’s capacity to accommodate heightened operational demands. Par Five was founded in 2011 and has approximately 95 employees.

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: