Atlético Madrid II (Primera Federación): every transfer in and out, fees paid and earned, squad market value, €1.4m spent and €6.7m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-22 | Marc Domènech | RCD Mallorca | Atlético Madrid II | Loan |
| 2026-08-21 | David García | Cádiz CF | Atlético Madrid II | Free |
| 2026-08-06 | Javi Morcillo | Atlético Madrid II | Elche CF | €1.5m |
| 2026-08-04 | Edgar Alcañiz | Levante UD | Atlético Madrid II | Free |
| 2026-07-23 | Ander Astralaga | FC Barcelona | Atlético Madrid II | Free |
| 2026-07-22 | Sergio Diez | UD Ibiza | Atlético Madrid II | Free |
| 2026-07-22 | Arnau Solà | FC Arouca | Atlético Madrid II | Loan |
| 2026-07-22 | Alejandro Mestanza | Atlético Madrid II | Académico Viseu | Free |
| 2026-07-17 | Álvaro Santos | Lommel SK | Atlético Madrid II | Free |
| 2026-07-04 | Salim El Jebari | Atlético Madrid II | Córdoba CF | Free |
| 2026-07-02 | Diego Bri | Atlético Madrid II | Córdoba CF | Free |
| 2026-07-02 | Adrián Corral | Atlético Madrid II | FC Cartagena | Free |
| 2026-07-01 | Jano Monserrate | Atlético Madrid II | Jong Ajax | Free |
| 2026-07-01 | Rafa Llorente | Atlético Madrid II | Atlético de San Luis | Free |
| 2026-02-02 | Rafa Llorente | AD Alcorcón | Atlético Madrid II | Free |
| 2026-01-28 | Marko Perovic | UD Almería | Atlético Madrid II | Loan |
| 2026-01-21 | Carlos Giménez | Atlético Madrid II | PAOK II | Loan |
| 2025-11-17 | Ronaldo Nájera | Atlético de San Luis | Atlético Madrid II | Loan |
| 2025-09-01 | Arnau Ortiz | Slask Wroclaw | Atlético Madrid II | €300k |
| 2025-08-29 | Aitor Gismera | Atlético Madrid II | Real Betis II | Free |