CD Basconia: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-11-01 | Selton Sánchez | CD Basconia | Athletic Club | — |
| 2024-07-01 | Selton Sánchez | Bilbao U18 | CD Basconia | — |
| 2023-07-01 | Mikel Jauregizar | CD Basconia | Bilbao Athletic | — |
| 2022-07-01 | Álex Padilla | CD Basconia | Bilbao Athletic | — |
| 2022-07-01 | Unai Gómez | CD Basconia | Bilbao Athletic | — |
| 2022-07-01 | Unai Egiluz | CD Basconia | Bilbao Athletic | — |
| 2022-07-01 | Mikel Jauregizar | Bilbao U19 | CD Basconia | — |
| 2022-07-01 | Hugo Rincón | CD Basconia | Bilbao Athletic | — |
| 2022-07-01 | Alejandro Rego | CD Basconia | Bilbao Athletic | — |
| 2022-01-01 | Adu Ares | CD Basconia | Bilbao Athletic | — |
| 2021-07-01 | Álex Padilla | Bilbao U19 | CD Basconia | — |
| 2021-07-01 | Unai Gómez | Bilbao U19 | CD Basconia | — |
| 2021-07-01 | Unai Egiluz | Bilbao U19 | CD Basconia | — |
| 2021-07-01 | Mikel Goti | CD Basconia | Bilbao Athletic | — |
| 2021-07-01 | Alejandro Rego | Bilbao U19 | CD Basconia | — |
| 2021-07-01 | Adu Ares | Santutxu | CD Basconia | Free |
| 2020-08-01 | Mikel Goti | Bilbao U19 | CD Basconia | — |
| 2020-08-01 | Aitor Paredes | CD Basconia | Bilbao Athletic | — |
| 2020-07-31 | Álvaro Núñez | CD Basconia | Bilbao Athletic | — |
| 2020-07-31 | Julen Agirrezabala | CD Basconia | Bilbao Athletic | — |