The day after pumping up LNG's long-term prospects, Flex LNG chief executive Oystein Kalleklev saw his holding in the New York and Oslo-listed company grow.

John Fredriksen-backed Flex disclosed on Friday that Kalleklev acquired 5,000 shares in the gas carrier owner for NOK 41.80 ($4.31) each, bringing his total to 45,000.

Kalleklev has a further option on 60,000 Flex shares with a strike price of $14.10