James P. Ulm

PXP Producing Co. LLC provides exploration, development, acquisition and production of oil and gas properties. The company is headquartered in Houston, TX.

Ovintiv Exploration, Inc. was an oil and gas company, which was engaged in the exploration, development, and production of crude oil, natural gas, and natural gas liquids. The company was founded by Joe B. Foster in 1988 and was headquartered in Austin, TX.

Northstar Offshore Group LLC engages in the oil and gas development and distribution services. The company is headquartered in DE.

Callon Petroleum Co. engages in the exploration, development, acquisition, and production of oil and natural gas properties in the United States. It focuses on unconventional oil and natural gas reserves in the Permian Basin. The company was founded by Sim C. Callon and John S. Callon in 1950 and is headquartered in Houston, TX.

Newvista Energy Partners provides business services. The private company is based in Bellaire, TX. The company was founded by James P. Ulm.

Fieldwood Energy LLC engages in the acquisition and development of conventional oil and gas assets. It operates on the Gulf of Mexico Shelf. The company was founded by George Matt McCarroll in September 2013 and is headquartered in Houston, TX.

Callon Petroleum Operating Co. engages in the acquisition, development, exploration and operation of oil and gas properties. The company was founded on October 12, 1983 and is headquartered in Natchez, MS.