AD Cantbasket 04, registered in the Sports Entities Registry of the Government of Cantabria, was founded in 2004 by two co-founders who began as basketball coaches at Colegio Altamira, located in Revilla, Camargo.

[1] Cantbasket made its debut in the fourth tier on 19 October 2014, with a win in Logroño over the reserve team of CB Clavijo by 77–87.

The team, managed by Benjamín Santos, started the season in the best way possible with seven consecutive wins that allowed them to lead the league table, earning possilities to play the promotion playoffs to LEB Plata.

In the 2015–16 season, an injury of franchise player DeAngelo Hailey, during the pre-season, weakened the team in the first months and finished its second participation in Liga EBA in the seventh position of the group.

In 2009, Cantbasket 04 decided to create a new project, separating its masculine section from the feminine one, thus the CB Némesis was born, with the firm purpose of being a future academy for Cantabrian female players.