Fjeld departs the Oslo-listed company at the end of the day, according to a statement detailing the agenda for its upcoming AGM.
The news comes soon after Flex announced in October it would seek strategic alternatives following its failure to turn a floating (FLNG) concept into a commercial reality.
Earlier this year the company ended a long-running dispute with Samsung Heavy Industries over an order for four FLNG units.
The Korean shipbuilder had canned the orders after Flex failed to raise finance to cover the remainder of the $2.4bn total cost.
The Oslo-listed company went to arbitration to claw back $300m in advance payments on the units but the dispute was finally resolved when the two parties agreed to convert the order into a pair of 174,000-cbm LNG carriers.
“Philip Fjeld has decided to step down from his position as CEO and his employment with the Group will cease on 30 November 2013,” Flex LNG said today.
“His role will be covered by the remaining management team.”
The statement went on: “Mr Fjeld was one of the original founders of the Company and has been employed by the Group since April 2007.
“In that time he has made a substantial contribution to the development of the Company, he has made a significant strategic input to the development of the FLNG market, he led the Company’s attempt to commercialise the FLNG concept and more recently was a key part of the restructuring negotiations with Samsung Heavy Industries.”