The club was founded on May 25, 1970 and started playing as Sunair Oostende. The team colors were blue and yellow. BCO – a nickname of the club – started in the Belgian Second Division but promoted in its first season after it took the title. But in the First Division the team relegated immediately. But BCO bounced back and promoted once again and got its final spot in the First Division, as they never relegated since. In the 1974–75 season the club made its first appearance in Europe, when it played 10 games in the Korać Cup. In 1979 the first trophy was won by Oostende: the Belgian Basketball Cup with Ron Adams as head coach. In 1981 the first national title became a fact for BC Oostende, Roger Dutremble was head coach. The club eventually won 6th straight titles in a row in Belgium. In 1988 the club won the first and only BeNeLux Cup. Before the 1999–2000 season the club got its first name change, as the name of the club became Telindus Oostende, which referred to the new main sponsor. After the club won some more trophies to add to its honour list, the club got a new arena in the Sea'rena – that was named the Sleuyter Arena after one season and had a capacity of 5,000 people – in 2005.
Nine consecutive championships (2011–2020)
Before the start of the 2010–11 season the club name was changed in Telenet Oostende. In the second Telenet season Jean-Marc Jaumin was fired by the club and the Croatian coach Dario Gjergja took over his tasks. After that the club won the national title, by beating Spirou Charleroi 3–2 in the Finals, Game 5 ended in 75–74 after overtime. The championship in 2011 was the start of a nice streak for Gjergja, as BCO won the double in 2012–13. Star player of the team was Matt Lojeski, who was named League MVP. In 2013–14, the club won the double once again, as BCO beat Okapi Aalstar 3–2 in the Finals. Oostende earlier beat Antwerp Giants in the Cup Final. The Serbian point guard Dušan Đorđević shined for Oostende, as he was the Belgian Cup MVP and the league MVP. On September 23, the club retired Veselin Petrović's number 10. In 2017, the club won its sixth-consecutive championship. After the 2016–17 season, main sponsor Telenet left the club in order to sponsor Antwerp Giants instead. In 2018, the club set a new record by winning its seventh consecutive championship. In the 2018–19 season, the team was named Filou Oostende after a sponsorship agreement with beer brand Filou. In 2019 Ostend became champions again, for the eighth time in a row. They beat Antwerp in the finals. In 2020 Ostend was declared champions when the 2019-20 season was cancelled due to the COVID-19 pandemic. They were leading the standings at that time. On 2 July 2020, head coach Dario Gjergja extended his contract for five more year. On 7 July, team captain Đorđević extended his contract for two more years until 2022.
Sponsorship names
For sponsorship reasons, the name of the club has been frequently changed.
