ENERGEN INC.

Energen is an independent oil and gas exploration and production company focused on the drilling and development of its high-quality assets in the Permian Basin of west Texas. As of year-end 2015, Energen has identified 4,440 unrisked, potential drilling locations on its Permian Basin acreage with an estimated 2 billion barrels of oil-equivalent net, undeveloped resource potential. Energen’s proved reserves at year-end 2015 totaled 355 million BOE.