CA San Martín (San Juan) (Torneo Apertura): every transfer in and out, fees paid and earned, squad market value and €3m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-22 | Matías Borgogno | CA San Martín (San Juan) | Club Social y Deportivo Defensa y Justicia | Loan |
| 2026-07-07 | Santiago Barrera | CA San Martín (San Juan) | César Vallejo | Loan |
| 2026-03-03 | Juan Cavallaro | CA San Martín (San Juan) | Delfín SC | Free |
| 2026-02-22 | Nahuel Acosta | Peñarol | CA San Martín (San Juan) | Free |
| 2026-02-06 | Federico Anselmo | San Martín (SJ) | Banfield | Free |
| 2026-01-20 | Matías Borgogno | San Martín (SJ) | Platense | Loan |
| 2026-01-20 | Matías Borgogno | CA San Martín (San Juan) | Platense FC | Loan |
| 2026-01-18 | Guillermo Acosta | Club Atlético Tucumán | CA San Martín (San Juan) | Free |
| 2026-01-15 | Sebastián Jaurena | Alvarado | CA San Martín (San Juan) | Free |
| 2026-01-14 | Horacio Tijanovich | San Martín (SJ) | Central Córdoba | Free |
| 2026-01-14 | Horacio Tijanovich | CA San Martín (San Juan) | Central Córdoba (SdE) | Free |
| 2026-01-09 | Esteban Burgos | CA San Martín (San Juan) | CD Godoy Cruz Antonio Tomba | Free |
| 2026-01-08 | Mauro Osores | San Martín (T) | CA San Martín (San Juan) | Free |
| 2026-01-08 | Genaro Rossi | Club Atlético Newell’s Old Boys | CA San Martín (San Juan) | Free |
| 2026-01-07 | Diego Mercado | Miami FC II | CA San Martín (San Juan) | Free |
| 2026-01-07 | Leonardo Monje | Instituto Atlético Central Córdoba | CA San Martín (San Juan) | Loan |
| 2026-01-04 | Rodrigo Cáseres | CA San Martín (San Juan) | Unión La Calera | Free |
| 2026-01-01 | Facundo Nadalín | Club Atlético Gimnasia y Esgrima de Mendoza | CA San Martín (San Juan) | Free |
| 2026-01-01 | Luciano Recalde | CA San Martín (San Juan) | Quilmes Atlético Club | Free |
| 2026-01-01 | Franco Toloza | CA San Martín (San Juan) | Dep. Morón | Free |