SOMB was founded on 5 September 1935. In the first years, basketball remained dormant in the club; the first games were played in the 1939–40 season. After a stop of activities during World War II, the team became an official FFBB team in 1945. In 1953 the club started its bigger development: youth teams were added and the first team played in the national Second Division.
In the 2013–14 season, SOMB won the Pro B, and promoted to the Pro A for the first time. They were relegated back to Pro B after the season.