FC Aarau (Swiss Challenge League): every transfer in and out, fees paid and earned, and the market value of the squad. €235k spent, €2.8m earned. Record complete to 2026-08-26.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-26 | Mohamed Guindo | RAAL La Louvière | FC Aarau | Free |
| 2026-08-19 | Alexis Beka Beka | RAAL La Louvière | FC Aarau | Free |
| 2026-07-28 | Mamadou Fofana | FC Aarau | AS Nancy-Lorraine | Free |
| 2026-07-27 | Thomas Chacón | FC Aarau | Rentistas | Free |
| 2026-07-16 | Shkelqim Vladi | FC Lugano | FC Aarau | Free |
| 2026-07-16 | Jasper van der Werff | FC Universitatea Cluj | FC Aarau | Free |
| 2026-07-16 | Marvin Hübel | FC Aarau | Grasshopper Club Zurich | Free |
| 2026-07-06 | Roko Baturina | Gil Vicente FC | FC Aarau | Free |
| 2026-07-01 | Tomislav Arković | Croatia Zmijavci | FC Aarau | Free |
| 2026-07-01 | Kastrijot Ndau | FC Wil 1900 | FC Aarau | Free |
| 2026-07-01 | Leon Frokaj | FC Aarau | FC St. Gallen 1879 | Free |
| 2026-07-01 | Dorian Derbaci | FC Aarau | FC Thun | Free |
| 2026-07-01 | Elias Filet | FC Aarau | RAAL La Louvière | €600k |
| 2026-07-01 | Valon Fazliu | FC Aarau | Yverdon Sport FC | Free |
| 2026-07-01 | Raúl Bobadilla | FC Aarau | Rapperswil-Jona | Free |
| 2026-02-11 | Ryan Kessler | FC Aarau | FC Sion | — |
| 2026-01-19 | Shkelqim Vladi | FC Lugano | FC Aarau | Loan |
| 2026-01-15 | Ibrahima Cissé | FC Schalke 04 | FC Aarau | Free |
| 2025-09-03 | Thomas Chacón | Bellinzona | FC Aarau | Free |
| 2025-08-26 | Mamadou Fofana | FC Aarau | Blau Weiss Linz | Loan |