Excelsior U21: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-07-01 | Tijmen Holla | Excelsior U21 | Excelsior | — |
| 2025-02-04 | Jelani Seedorf | Excelsior U21 | Sparta U21 | Free |
| 2024-08-08 | Cedric Hatenboer | Excelsior U21 | Excelsior | — |
| 2024-07-01 | Tijmen Holla | Excelsior U18 | Excelsior U21 | — |
| 2024-07-01 | Siem de Moes | Excelsior U21 | Excelsior | — |
| 2023-07-01 | José de Almeida Reis | Excelsior U18 | Excelsior U21 | — |
| 2023-07-01 | Jelani Seedorf | Excelsior U18 | Excelsior U21 | — |
| 2023-07-01 | Cedric Hatenboer | Excelsior U18 | Excelsior U21 | — |
| 2022-07-01 | Siem de Moes | Sparta R. U18 | Excelsior U21 | Free |
| 2022-07-01 | Raphaël Eyongo | Excelsior U21 | Excelsior | — |
| 2022-07-01 | Jeremy Udenhout | Sparta U21 | Excelsior U21 | Free |
| 2021-07-01 | Serano Seymor | Excelsior U21 | Excelsior | — |
| 2021-07-01 | Raphaël Eyongo | Excelsior U18 | Excelsior U21 | — |
| 2021-07-01 | Pascal Kuiper | Excelsior U21 | Excelsior | — |
| 2020-07-01 | Serano Seymor | Excelsior U19 | Excelsior U21 | — |
| 2020-07-01 | Pascal Kuiper | Excelsior Jeugd | Excelsior U21 | — |