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 | Patricio Rodolfo Rubio Pulgar | Ñublense | Unión Española | Free |
| 2026-01-06 | William Floricio Machado Caetano | Almirante Brown | Unión Española | Free |
| 2026-01-03 | Agustín Nadruz | Unión Española | Cobresal | Free |
| 2026-01-01 | Fabricio Formiliano | Unión Española | Wanderers | Free |
| 2025-07-28 | Cris Montes | Unión Española | CD Tenerife | Free |
| 2025-07-25 | Gonzalo Castellani | Club Ferro Carril Oeste | Unión Española | Free |
| 2025-07-25 | Cristian Insaurralde | Cobreloa | Unión Española | Loan |
| 2025-07-17 | Franco Torgnascioli | Unión Española | Montevideo City Torque | Free |
| 2025-07-09 | Fabricio Formiliano | Universidad Chile | Unión Española | Free |
| 2025-07-09 | Bianneider Tamayo | Universidad Chile | Unión Española | Loan |
| 2025-07-09 | Renato Huerta | Universidad Chile | Unión Española | Loan |
| 2025-03-13 | Diego González | Unión Española | CA San Martín (San Juan) | Free |
| 2025-03-02 | Tomás Tolosa | Unión Española | Provincial Ovalle | Loan |
| 2025-02-15 | Stefano Magnasco | Unión Española | Deportes Temuco | Free |
| 2025-02-13 | Nicolás Díaz | Club Tijuana | Unión Española | Loan |