Sven-Erik Zachrisson

Preem AB operates oil and gas refineries. It refines and sell fuels, heating and lubricating oil, as well as other products for companies and individuals. The company was founded in May 1996 and is headquartered in Stockholm, Sweden.

Svenska Petroleum Exploration AB engages in the business of finding and producing oil and gas. Its operations extend across the Baltic Sea to the hydrocarbon-rich basins of West Africa. The firm’s production comes from the Ivory Coast. The company was founded in February 1979 and is headquartered in Stockholm, Sweden.

Petrogrand AB is a holding company, which engages in the exploration and production of oil and gas. The firm offers management and refining of oil assets. The company was founded in April 2005 and is headquartered in Stockholm, Sweden.

Gripen Oil & Gas AB engages in the exploration and production of oil and natural gas. It operates through its subsidiaries, Gotland Exploration AB and Gripen Gas AB. Goltand Exploration AB holds exploration permits on Gotland and Gripen Gas AB is the holder of the group's permits in Östergötland and on Öland. The company was founded on November 29, 2005 and is headquartered in Lidingö, Sweden.

Petrosibir AB operates as a holding company. It engages in the exploration and production of oil and gas concessions in Russia. The company was founded in 2007 and is headquartered in Stockholm, Sweden.