Wests Tigers chairwoman Marina Go has resigned from her post after almost five years at the helm of the joint venture.

Go is expected to remain in the role until at least after the club's opening round of the season, however NRL.com understands she informed the board of her resignation on December 24 given her frustrations over the NRL's punishment of the club in relation to an ambassador role offered to Robbie Farah.

Her board pleaded with her to stay on to help the club through its latest crisis, with Go agreeing to remain on until the salary cap drama had drawn to an end.

Go also decided to remain on because another director, Darren Perry, also resigned on December 24.

If Go left her post before Christmas, the board would have become unconstitutional given Go and Perry were the only two independent directors.

"I look forward to the start of the 2019 NRL season and will have the opportunity to speak with our sponsors and Members before my formal departure from the club," Go said in a statement on Monday.

"I have no doubt that with a passionate board, a talented and dedicated executive team, a Premiership-winning coach and excellent staff as well as a quality playing roster, Wests Tigers remain in good hands who will ensure the success of this club in to the future."

Meanwhile on Monday the Tigers announced Wests Ashfield Leagues Club CEO Simon Cook would lead the club as caretaker CEO until Justin Pascoe's return from suspension in June.

Marina Go addresses Wests Tigers sanctions

NRL.com asked Go if she had resigned in an interview on Friday and, while Go did her best to avoid answering the question, she couldn't hide her frustrations.

"If I was to leave the club, and I will - I am going to leave the club at some point - it won't be because I don't love my club," Go told NRL.com on Friday.

"I love my club. But I have spent the past couple of months looking under the bonnet, or seeing up close, the governance of the game. I just feel if I was to leave, I would leave them to that."

Go was reluctant to leave in December as it would have placed the club in a precarious position given the attention on them, agreeing to stay on for up to six months.

She is expected to discuss her future - and her departure date - at a club board meeting following the round one game against the Sea Eagles at Leichhardt Oval.

Go has been instrumental in ensuring the financial sustainability of the once unstable club.

"On any given day, rugby league is the best thing I've ever done and the worst thing I've ever done," she said.

"What I like to do is to be able to contribute. I think I have contributed ... I do it for reasons of what I can give to the organisation - in this case the sport. I feel really proud of my contributions.

"I'm really proud. From four and a half years ago. One of the greatest challenges was actually to right the ship financially. And we've done that. To come out the end of last year in a position that was profitable - and we might slip back under now that we've got the fine - but it's a really wonderful position to be in for a very strong club. I'm very proud of that."