CD Basconia (Segunda Division RFEF: Group 2): every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-07-01 | Player | Athletic Club II | CD Basconia | Free |
| 2025-07-01 | Aimar Peña | CD Basconia | Mallorca II | Free |
| 2024-12-01 | Player | CD Basconia | Athletic Club II | Free |
| 2024-07-17 | Julen Lartitegi | CD Basconia | Deportivo Alaves II | Free |
| 2024-07-01 | Eneko Ebro | CD Basconia | Athletic Club II | Free |
| 2024-07-01 | Player | CD Basconia | Athletic Club II | Free |
| 2024-07-01 | Player | CD Basconia | Athletic Club II | Free |
| 2023-07-30 | Iñaki Telletxea | CD Basconia | Mutilvera | Free |
| 2023-07-01 | Mikel Jauregizar | CD Basconia | Athletic Club II | Free |
| 2023-07-01 | Álvaro Marín | CD Basconia | Athletic Club II | Free |
| 2023-07-01 | Wibuala Junior Bita | CD Basconia | Athletic Club II | Free |
| 2023-07-01 | Oier Gastesi | CD Basconia | Athletic Club II | Free |
| 2023-07-01 | Aimar Duñabeitia | CD Basconia | Athletic Club II | Free |
| 2023-07-01 | Iker Varela | CD Basconia | Athletic Club II | Free |
| 2023-07-01 | Erlantz Palacín | CD Basconia | Athletic Club II | Free |
| 2023-01-01 | Beñat Gerenabarrena | CD Basconia | Athletic Club II | Free |
| 2022-07-02 | Julen Lartitegi | CD Basconia | Deusto | Loan |
| 2022-07-01 | Hugo Rincón | CD Basconia | Athletic Club II | Free |
| 2022-07-01 | Unai Gómez | CD Basconia | Athletic Club II | Free |
| 2022-07-01 | Unai Egiluz | CD Basconia | Athletic Club II | Free |