Unión Española (Primera División): every transfer in and out, fees paid and earned, squad market value and €5.4m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-05 | Ángelo Araos | Puebla FC | Unión Española | Free |
| 2026-07-14 | Ariel Uribe | Unión Española | Audax Italiano | Loan |
| 2026-03-11 | Simón Ramírez | Unión Española | Antofagasta | Free |
| 2026-03-03 | Renato Cordero | Universidad Chile | Unión Española | Loan |
| 2026-01-15 | Gonzalo Castellani | Unión Española | Club Ferro Carril Oeste | Free |
| 2026-01-06 | William Floricio Machado Caetano | Almirante Brown | Unión Española | Free |
| 2026-01-06 | Patricio Rodolfo Rubio Pulgar | Ñublense | Unión Española | Free |
| 2026-01-03 | Agustín Nadruz | Unión Española | Cobresal | Free |
| 2026-01-01 | Fabricio Formiliano | Unión Española | Wanderers | Free |
| 2026-01-01 | Agustín Nadruz | Unión Española | TBC | Free |
| 2026-01-01 | Simón Ramírez | Unión Española | TBC | Free |
| 2025-07-28 | Cris Montes | Unión Española | CD Tenerife | Free |
| 2025-07-25 | Cristian Insaurralde | Cobreloa | Unión Española | Loan |
| 2025-07-25 | Gonzalo Castellani | Club Ferro Carril Oeste | Unión Española | Free |
| 2025-07-17 | Franco Torgnascioli | Unión Española | Montevideo City Torque | Free |
| 2025-07-11 | Franco Torgnascioli | Unión Española | TBC | Free |
| 2025-07-11 | Matías Suárez | Unión Española | TBC | Free |
| 2025-07-09 | Renato Huerta | Universidad Chile | Unión Española | Loan |
| 2025-07-09 | Bianneider Tamayo | Universidad Chile | Unión Española | Loan |
| 2025-07-09 | Fabricio Formiliano | Universidad Chile | Unión Española | Free |