VAALCO Energy, Inc., an independent energy company, together with its subsidiaries, engages in the acquisition, exploration, development, and production of crude oil and natural gas. The company owns producing properties and conducts exploration activities as an operator of consortiums internationally in Gabon and Angola, as well as conducts exploration activities as a non-operator in the British North Sea. It also operates three shale properties in the United States located in Montana and Texas; and owns minor interests in conventional production activities as a non-operator in Brazos County, Texas, Pickens County, Alabama, and in the Ship Shoal area of the Gulf of Mexico. The company owns a 30.35% interest in the exploration acreage within the Etame Marin block; owns a 28.1% interest in the development areas in and surrounding the Etame, Avouma, South Tchibala, and Ebouri fields; interests in Mutamba Iroru block located onshore near the coast in central Gabon; a 40% working interest in approximately 1.4 million acre Block 5 offshore, Angola; a 640 and 480 acre lease in the Granite Wash formation in North Texas; a 70% working interest in approximately 5,200 acres in Sheridan County, Montana; and a 65% working interest in approximately 22,000 gross acres in Roosevelt County, Montana. VAALCO Energy, Inc. was founded in 1984 and is headquartered in Houston, Texas.