New York-based trader Mike Newton has stepped down as Oldham director for a second time, the club have announced.
Mr Newton made the decision to leave the Latics' board after holding talks with club chairman Simon Corney.
"Simon wants to restructure the board and I have agreed to stand down," he told the club's official website.
"Simon is a deep personal friend and hopefully things will work out for him. I have enjoyed my time at the club and wish them all the best."
Mr Newton, who put a substantial amount of money into the club, which he has written off as a donation, re-joined the board 12 months ago after initially standing down after the 2009/10 season.
Mr Corney added: "Mike has been instrumental in helping to shape various aspects of the club.
"Due to his day-to-day commitments and being based in New York, he is not able to get across so often.
"When he has been here, he has provided a useful insight."