그디니아

The team was founded in 1995, as STK Trefl Sopot. In its first season, the team won the Polish third division and promotion to the Polish second division. In the 1996–97 season, after winning Group B of the Polish second division, the team was promoted to the top Polish Basketball League, the Dominet Bank Ekstraliga.

In 2003, Prokom Trefl played in the final of the FIBA Europe Champions Cup, against Aris. Starting in 2004, the team began to play in the EuroLeague. In its first EuroLeague season, the club became the first Polish team to reach the EuroLeague's Top 16 stage. In 2009, the club relocated from Sopot to its neighbouring city of Gdynia within the Tricity. Through the 2012–13 season, it was one of 14 clubs across Europe that held Euroleague Basketball A Licenses, which (normally) gave their holders an automatic place in the Regular Season phase of the EuroLeague.

In 2018, the club changed its name to Arka Gdynia. It also made a return to European-wide competitions for the first time in 6 years, by playing in the 2018–19 EuroCup.