Saint-Étienne B: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-01-13 | Maedine Makhloufi | Saint-Étienne B | USL Dunkerque | Free |
| 2026-01-01 | Kévin Pedro | Saint-Étienne B | Saint-Étienne | — |
| 2025-07-28 | Marwann Nzuzi | Saint-Étienne B | NK Bravo | Free |
| 2025-07-01 | Antoine Gauthier | Saint-Étienne B | Le Puy Foot | Free |
| 2025-01-01 | Djylian N'Guessan | Saint-Étienne B | Saint-Étienne | — |
| 2024-07-01 | Mathis Amougou | Saint-Étienne B | Saint-Étienne | — |
| 2024-07-01 | Maedine Makhloufi | St-Étienne U19 | Saint-Étienne B | — |
| 2024-07-01 | Kévin Pedro | St-Étienne U19 | Saint-Étienne B | — |
| 2024-07-01 | Djylian N'Guessan | St-Étienne U19 | Saint-Étienne B | — |
| 2024-07-01 | Beres Owusu | Saint-Étienne B | Saint-Étienne | — |
| 2023-07-01 | Mathis Amougou | St-Étienne U19 | Saint-Étienne B | — |
| 2023-07-01 | Marwann Nzuzi | St-Étienne U19 | Saint-Étienne B | — |
| 2023-07-01 | Issiaka Touré | Toulouse U19 | Saint-Étienne B | Free |
| 2023-07-01 | Darnell Eric Bile | Saint-Étienne B | Without Club | — |
| 2022-07-01 | Louis Mouton | Saint-Étienne B | Saint-Étienne | — |
| 2022-07-01 | Jebryl Sahraoui | St-Étienne U17 | Saint-Étienne B | — |
| 2022-07-01 | Darnell Eric Bile | St-Étienne U19 | Saint-Étienne B | — |
| 2022-07-01 | Beres Owusu | St-Étienne U19 | Saint-Étienne B | — |
| 2022-07-01 | Antoine Gauthier | St-Étienne U19 | Saint-Étienne B | — |
| 2021-07-01 | Louis Mouton | St-Étienne U19 | Saint-Étienne B | — |