Paul Barber has bought newly-issued shares in [Albion](https://www.theargus.co.uk/sport/albion/) – making him the second largest stake-holder in the club.
The Seagulls’ deputy chairman and chief executive now owns 1.5% of all shares.
He previously had a nominal investment.
Chairman and majority shareholder Tony Bloom has welcomed the news.
He said: “Paul has been exceptional in his role as deputy chairman and chief executive, and we are thrilled that he has further strengthened his commitment to the club with this investment.
“Paul is a major driving force at the club. He has been integral to our incredible progress since his arrival in the summer of 2012 and we would like him to remain with us for many seasons to come.
“He has already committed to the club until at least 2030, and we wanted to offer him this opportunity to further commit, and also to recognise his level of service and loyalty to the club.
“I regard Paul as the best chief executive in football and I am delighted he is now a co-owner of the club.”
Barber thanked Bloom and the board for the chance to invest.
He said: “It is a minority and some way behind Tony’s majority shareholding, but nonetheless I’m very proud indeed to co-own a small part of a football club I’ve come to love over the past 13 years.
“We have achieved so much: club, staff, fans and community, including promotion to the Premier League, qualifying for Europe and there’s so much more for us to achieve. I look forward to continuing our progress over the coming seasons.”