EA Guingamp (Ligue 1): every transfer in and out, fees paid and earned, squad market value, €12m spent and €62m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-21 | Akim Abdallah | EA Guingamp | Pau FC | Free |
| 2026-07-30 | Tom Ducrocq | SC Bastia | EA Guingamp | Free |
| 2026-07-29 | Jeovanni Dianganga | KSC Lokeren | EA Guingamp | Free |
| 2026-07-11 | Louis Mafouta | EA Guingamp | Le Mans FC | Free |
| 2026-07-09 | Florent Sanchez | Orléans | EA Guingamp | Free |
| 2026-07-01 | Teddy Averlant | Amiens SC | EA Guingamp | €500k |
| 2026-07-01 | Samir Ben Brahim | Versailles | EA Guingamp | €100k |
| 2026-07-01 | Sohaib Naïr | EA Guingamp | AS Saint-Étienne | €1m |
| 2026-07-01 | Kalidou Sidibé | EA Guingamp | RFK Akhmat Grozny | Free |
| 2026-07-01 | Amadou Sagna | EA Guingamp | Kiryat Shmona | Free |
| 2026-01-21 | Dylan Ourega | Guingamp | KVC Westerlo | €1m |
| 2026-01-19 | Brown Irabor | EA Guingamp | FC Koper | Free |
| 2026-01-13 | Amadou Samoura | Concarneau | EA Guingamp | €25k |
| 2026-01-01 | Yohan Demoncy | Stade Reims | EA Guingamp | Loan |
| 2025-09-11 | Jacques Siwe | Guingamp | Rubin Kazan | €2.5m |
| 2025-09-10 | Brown Irabor | EA Guingamp | Le Puy-en-Velay | Loan |
| 2025-09-01 | Freddy Mbemba | Royal Charleroi Sporting Club | EA Guingamp | Loan |
| 2025-08-27 | Stanislas Kielt | Concarneau | EA Guingamp | €200k |
| 2025-08-08 | Gautier Ott | Académico Viseu | EA Guingamp | Free |
| 2025-08-07 | Jérémy Hatchi | FC Lorient | EA Guingamp | Loan |