Bilbao Youth: every transfer in and out, fees paid and earned, squad market value, €300k spent.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2023-07-01 | Selton Sánchez | Bilbao Youth | Bilbao U18 | — |
| 2021-07-01 | Aingeru Olabarrieta | Bilbao Youth | Bilbao U18 | — |
| 2019-07-01 | Hugo Rincón | Bilbao Youth | Bilbao U18 | — |
| 2019-07-01 | Alejandro Rego | Bilbao Youth | Bilbao U18 | — |
| 2018-07-01 | Nico Williams | Bilbao Youth | Bilbao U18 | — |
| 2018-07-01 | Mikel Goti | Bilbao Youth | Bilbao U18 | — |
| 2018-07-01 | Hugo Rincón | CA Osasuna Yout | Bilbao Youth | Free |
| 2018-07-01 | Ander Astralaga | Bilbao Youth | Barça Youth | — |
| 2017-07-01 | Borja Sainz | Bilbao Youth | Alavés Youth | — |
| 2017-07-01 | Beñat Prados | Bilbao Youth | Bilbao U18 | — |
| 2016-07-01 | Álvaro Núñez | Bilbao Youth | Bilbao U18 | — |
| 2016-07-01 | Unai Gómez | Bilbao Youth | Danok Bat Yth. | — |
| 2016-07-01 | Oihan Sancet | Bilbao Youth | Bilbao U18 | — |
| 2016-07-01 | Imanol García de Albéniz | Bilbao Youth | Bilbao U18 | — |
| 2016-07-01 | Aitor Paredes | Bilbao Youth | Bilbao U19 | — |
| 2015-07-01 | Oihan Sancet | CA Osasuna Yout | Bilbao Youth | €300k |
| 2015-07-01 | Oier Zarraga | Bilbao Youth | Bilbao U18 | — |
| 2015-07-01 | Beñat Prados | Txantrea Yth. | Bilbao Youth | — |
| 2013-07-01 | Unai Simón | Bilbao Youth | Bilbao U18 | — |
| 2013-07-01 | Nico Williams | CA Osasuna Yout | Bilbao Youth | Free |