Gran Tierra Energy Inc.

Gran Tierra Energy, Inc engages in the exploration and production of oil and natural gas in Colombia and Ecuador. The company is headquartered in Calgary, Alberta and currently employs 406 full-time employees. The company went IPO on 2005-07-06. The firm operates a total of 25 blocks in Colombia and Ecuador, spanning three basins and over 1.5 million gross acres. The company also holds large contiguous areas in Alberta, Canada, spanning 1.2 million gross acres across the Western Canadian Sedimentary Basin. Colombia represents approximately 85% of its production with oil reserves and production located in the Middle Magdalena Valley (MMV) and Putumayo Basin. In MMV, the Company’s field is the Acordionero field, where it produces approximately 17-degree American Petroleum Institute (API) oil, which represents 44% of the total Company’s production. The Putumayo production is approximately 27-degree API for Chaza Block and 18-degree API for Suoriente Block, representing 27% and 9% respectively, of the total Company’s production.