Atok-Big Wedge Co., Inc., together with its subsidiaries, engages in the exploration and development, and mining of oil and gas, and other natural resource properties in the Philippines. It primarily explores for gold and silver ores. The company has interests in various service contracts. In addition, it provides stock transfer agency services. The company was incorporated in 1931 and is based in Makati, the Philippines. Atok-Big Wedge Co., Inc. is a subsidiary of Boerstar Corporation.