John S. Gaensbauer

Extraction Oil & Gas, Inc. is an energy company, which engages in the exploration, development, and production of oil, natural gas, and natural gas liquids. It focuses on extraction activities in Denver-Julesburg Basin of Colorado, targeting development of the Codell and Niobrara formations. The company was founded by Mark A. Erickson, Matthew Owens and Jesse Silva in November 2012 and is headquartered in Denver, CO.

Sierra Partners LLC is an investment banking and advisory services company. The private company is based in Las Vegas, NV. The company was founded by William Durand Eppler. William Durand Eppler has been the CEO since incorporation.

Headwaters MB LLC provides investment banking services to entrepreneurs, owner and operators, and business-owning families. It offers strategic merger and acquisition advice, capital raising, and special situations advisory. The company was founded by Phil Seefried and Dave Maney in 2001 and is headquartered in Denver, CO.

Pre Resources LLC is an American company that manufactures petroleum. The private company is based in Denver.

Capstone Headwaters LLC operates as an investment banking firm. It provides merger and acquisition, private placement, business consulting, corporate restructuring, valuation, and strategic advisory services. The company was founded by John Ferrara in 1996 and is headquartered in Boston, MA.