RC Lens (Ligue 1): every transfer in and out, fees paid and earned, squad market value, €231m spent and €401m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-18 | Wesley Saïd | RC Lens | Al Shamal SC | Free |
| 2026-07-01 | Wesley Saïd | Lens | Without Club | — |
| 2026-07-01 | Saud Abdulhamid | Roma | Lens | €3.5m |
| 2026-07-01 | Facundo Medina | Lens | Marseille | €18m |
| 2026-07-01 | Anass Zaroury | Lens | Panathinaikos | €3m |
| 2026-07-01 | Allan Saint-Maximin | Lens | Without Club | — |
| 2026-07-01 | Adrien Thomasson | Lens | Stade Rennais | Free |
| 2026-02-18 | Jeremy Agbonifo | Lens | Häcken | Loan |
| 2026-02-09 | Jhoanner Chávez | Lens | Sparta Prague | Loan |
| 2026-02-03 | Morgan Guilavogui | Lens | Salt Lake | €5m |
| 2026-02-02 | Allan Saint-Maximin | América | Lens | Free |
| 2026-01-29 | Goduine Koyalipou | Lens | Angers SCO | Loan |
| 2026-01-27 | Arthur Masuaku | Sunderland | Lens | Loan |
| 2026-01-26 | Hamzat Ojediran | Lens | Colorado | €3m |
| 2026-01-19 | Mathieu Gorgelin | Without Club | Lens | — |
| 2026-01-16 | Martín Satriano | Lens | Lyon | €5m |
| 2026-01-01 | Amadou Haidara | Leipzig | Lens | €2m |
| 2025-12-08 | Deiver Machado | Lens | FC Nantes | €500k |
| 2025-10-24 | Erawan Garnier | Olymp. Lyon B | Lens | — |
| 2025-09-01 | Odsonne Édouard | Crystal Palace | Lens | €3.7m |