Grasshopper Club Zurich (Super League): every transfer in and out, fees paid and earned, squad market value, €6.4m spent and €18m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-01 | Dirk Abels | Grasshopper Club Zurich | Công an TP.Hồ Chí Minh | Free |
| 2026-07-01 | Nicolas Glaus | Grasshoppers | Without Club | — |
| 2026-07-01 | Laurent Seji | Grasshoppers | Without Club | — |
| 2026-07-01 | Dirk Abels | Grasshoppers | Without Club | — |
| 2026-02-09 | Sven Köhler | E. Braunschweig | Grasshoppers | €300k |
| 2026-02-05 | Mouhamed El Bachir Ngom | Riga | Grasshoppers | €600k |
| 2026-01-26 | Michael Frey | QPR | Grasshoppers | — |
| 2026-01-26 | Mathieu Choinière | Grasshoppers | LAFC | €820k |
| 2026-01-15 | Luka Mikulic | HSK Posusje | Grasshoppers | €240k |
| 2026-01-15 | Ismajl Beka | FC Luzern | Grasshoppers | — |
| 2026-01-15 | Emmanuel Tsimba | Young Boys | Grasshoppers | Loan |
| 2025-11-27 | Laurent Seji | Grasshoppers | Rapperswil-Jona | Loan |
| 2025-11-12 | Maximilian Ullmann | Without Club | Grasshoppers | — |
| 2025-10-01 | Samuel Krasniqi | GC Zürich U21 | Grasshoppers | — |
| 2025-09-05 | Abdoulaye Diaby | FC St. Gallen | Grasshoppers | Free |
| 2025-08-21 | Óscar Clemente | Levante | Grasshoppers | Free |
| 2025-08-04 | Maksim Paskotsi | Grasshoppers | KAA Gent | €800k |
| 2025-08-01 | Jonathan Asp Jensen | FC Bayern II | Grasshoppers | Loan |
| 2025-07-29 | Lovro Zvonarek | Bayern Munich | Grasshoppers | Loan |
| 2025-07-28 | Mathieu Choinière | Grasshoppers | LAFC | Loan |