TransAtlantic Petroleum Ltd., an oil and natural gas company, engages in the acquisition, exploration, development, and production of oil and natural gas properties in Turkey and Bulgaria. As of December 31, 2019, it had interests in 4 onshore exploration licenses and 20 onshore production leases covering an area of 436,388 net acres with a total net proved reserves of 10,259 thousand barrels of oil and 2,466 million cubic feet of natural gas located in Turkey, as well as a production concession covering an area of approximately 162,800 net undeveloped acres located in Bulgaria. The company was incorporated in 1985 and is based in Addison, Texas. As of December 18, 2020, TransAtlantic Petroleum Ltd. was taken private.