As of December 31st 2018, Røkke owned 68.2% of the shares in Aker ASA through his investment company, TRG AS, and its subsidiaries.
During the 1980s, Røkke was based in Seattle, Washington, where he owned and operated American Seafoods and Resource Group International (RGI), which included brands like Brooks Sports and Helly Hansen.
[5] Røkke is currently the largest shareholder of Aker ASA, an industrial investment company, which interests are concentrated in the oil and gas, maritime assets and marine biotechnology sectors.
[13] In May 2017, Røkke and his wife joined the Gates-Buffett The Giving Pledge, an elite network of big philanthropic givers.
[14] In May 2017, Røkke announced that he is funding the purchase of the world's largest and most advanced research vessel, the REV Ocean.
Røkke also told Aftenposten that he was concerned about both climate change and plastic pollution in the seas, but that his passion for science was one of the key elements in his funding the project.
Aker Scholarship's objective is to inspire recipients to make a difference in the development of Norwegian business, industry, and society.
[17] The purpose of the Aker Scholarship is to offer highly qualified candidates, with a strong link to Norway, an opportunity to pursue an advanced degree at a high-level university, and to support the development of the scholar's social commitment.
Røkke's privately owned company, TRG, provided the foundation's starting capital of NOK 25 million.
[20] In 2017, Røkke gave a donation to the family's local soccer club, Frisk Asker, to fund new artificial turf and a new clubhouse.
[27] Røkke, along with his former business partner Bjørn Rune Gjelsten, also bought into Wimbledon Football Club in the late 1990s, becoming a joint owner of the team in 2000.
The following year, with the club homeless since leaving their Plough Lane ground in 1991 and playing at Crystal Palace's Selhurst Park stadium in Croydon, southeast London, Røkke and Gjelsten, along with chairman Charles Koppel and businessman Pete Winkelman agreed to relocate the team from London to Milton Keynes, a town around 60 miles from their traditional base.
After rejections from the Football League and The FA, the decision was eventually passed on to a three-man arbitration panel, the outcome being two to one in favour of the move.
The following season, Wimbledon FC would go on to play in front of record low crowds, including just 664 for a League Cup game against Rotherham, before finally completing the move in September 2003.