John Fredriksen is a Norwegian-born Cypriot oil tanker and shipping billionaire businessman based in London. He owns the world's largest oil tanker fleet and has major interests in the offshore driller Seadrill, the fish farming company Mowi, and the dry bulk company Golden Ocean Group. Through his investment companies Hemen Holdings and Meisha, Fredriksen controls the companies Frontline, Avance Gas Holding Ltd. and Flex LNG Ltd. In 2010–2011, Frontline owned 9.6 percent of another large tanker company, Overseas Shipholding Group.

Mowi ASA, formerly known as Marine Harvest ASA, , is a Norwegian seafood company with operations in a number of countries around the world. The company's primary interest is fish farming, primarily salmon, the operations of which are focused on Norway, Scotland, Canada, the Faroe Islands, Ireland and Chile. The group has a share of 25 to 30% of the global salmon and trout market, making it the world's largest company in the sector. Mowi also owns a 'value added processing' unit, which prepares and distributes a range of seafood products, and a number of smaller divisions.