Compressor Systems, Inc. (“CSI”)

CSI is the largest privately held, full service natural gas compression provider in the United States. CSI fabricates, sells, and maintains natural gas compressors and provides compression services that cover the entire natural gas production and transportation cycle to a broad customer base. CSI owns one of the largest fleets of natural gas compression equipment in the United States totaling 2,223 compressor packages with approximately 858,000 horsepower. In addition, CSI fabricates and sells engine-driven oilfield fluid pump systems primarily for the international market. CSI was founded in 1971 and is based in Midland, Texas.

Compressco Partners, L.P. (“Compressco”)

Compressco Partners is a provider of compression-based production enhancement services, which are used in both conventional wellhead compression applications and unconventional compression applications, and in certain circumstances, well monitoring and sand separation services. Compressco Partners provides services to a broad base of natural gas and oil exploration and production companies operating throughout many of the onshore producing regions of the United States. Internationally, Compressco Partners has significant operations in Mexico and Canada and a growing presence in certain countries in South America, Europe, and the Asia-Pacific region. Compressco Partners is managed by Compressco Partners GP Inc., which is an indirect, wholly owned subsidiary of TETRA Technologies, Inc.

PPHB, LP (“PPHB”)

PPHB is an independent investment banking firm providing financial advisory services exclusively to clients in the oilfield equipment and service industry.