Bob Dorrian has stepped down from his position as chairman at Lincoln City Football Club and Lincoln City Holdings.
The successor has already been elected but the club is yet to announce full details.
Bob, who took over as chairman of the club from Steff Wright in 2010, will be an Associate Director with the Imps.
He has seen the club through some difficult and exciting times, with the Imps enjoying more success in the last few years.
This included getting promoted back into the Football League after winning the 2016/17 National League.
The 2016/17 season also saw Lincoln make history by becoming the first non-league side to reach the FA Cup quarter-finals in over 100 years with victory over Premier League team Burnley.
Lincoln’s first season back in League Two was also successful as Danny Cowley led them to an impressive seventh-placed finish, as well as lifting the Checkatrade Trophy in the club’s first trip to Wembley in 133 years.
Lincoln City said in a statement on the club’s official website: “Bob has considered that now is the right time for someone else to steer the club forward to even greater progression and there is every reason to be optimistic about the club’s future.
“The board, on behalf of everyone at Lincoln City Football Club, would like to put on record their thanks to Bob for all his dedication, hard work and financial support during his time as Chairman.
“The board have elected a successor to Bob and full details will be announced shortly.”