Móstoles (Copa Del Rey): every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-09 | Angelito Auñón | Navalcarnero | Móstoles | Free |
| 2026-07-08 | Miguel García | Navalcarnero | Móstoles | Free |
| 2025-08-25 | Javi Currás | Fuenlabrada | Móstoles | Free |
| 2025-07-25 | Player | Móstoles | Colonia Moscardo | Free |
| 2025-07-25 | Gonzalo de la Rosa | Móstoles | Toledo | Free |
| 2025-07-23 | Player | Llanera | Móstoles | Free |
| 2025-07-11 | Alexander Szymanowski | TBC | Móstoles | Free |
| 2025-07-10 | Víctor Rodríguez | Móstoles | Guadalajara | Free |
| 2025-07-06 | Player | Móstoles | Gimnástica Segoviana | Free |
| 2025-07-01 | Óscar Gil | Móstoles | TBC | Free |
| 2025-07-01 | Álvaro Narbona | Móstoles | Toledo | Free |
| 2025-07-01 | Fernando Delgado | Móstoles | TBC | Free |
| 2025-07-01 | Boriba | Móstoles | TBC | Free |
| 2025-02-26 | David Mateos | Móstoles | Jiangxi Dingnan United | Free |
| 2025-01-21 | Carlos Parra | Móstoles | Salamanca CF UDS | Free |
| 2025-01-14 | David Mateos | Móstoles | TBC | Free |
| 2025-01-13 | Player | Xerez Deportivo | Móstoles | Free |
| 2025-01-08 | Player | Móstoles | TBC | Free |
| 2025-01-08 | Óscar Gil | Compostela | Móstoles | Free |
| 2025-01-07 | Player | Navalcarnero | Móstoles | Free |