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Gran Tierra Energy Inc. is an international oil and gas exploration and production company headquartered in Calgary, Canada, incorporated and traded in the United States and operating in South America. The Company currently holds interests in producing and prospective properties in Colombia, Brazil and Peru. The Company strategy is focused on establishing a portfolio of drilling opportunities to exploit undeveloped reserves to grow production, as well as undertaking exploration drilling to grow future reserves.
Oil Optimization Inc is a Canadian listed international oil and gas company focused on discovering hydrocarbons on its petroleum concession onshore Thailand.
EV Energy Partners (EVEP) is an upstream Master Limited Partnership (MLP) focused on acquiring and operating oil and gas properties within the continental United States.
Martinez Concrete Inc is a Sykesville, MD-based company in the Energy and Utilities sector.
Concord Energy is a Littleton, CO-based company in the Energy and Utilities sector.