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

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

Aqua Prop LLC (“Aqua Prop”)

Aqua Prop is a leading provider of wet sand solutions, catering to the needs of the oil and natural gas industry. With its specialized offering and expertise, Aqua Prop offers cost-effective and efficient solutions that provide a compelling value proposition and contribute to the success of hydraulic fracturing operations.

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: