Öster (Superettan): every transfer in and out, fees paid and earned, squad market value, €430k spent and €5.4m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-31 | Kalipha Jawla | Djurgården | Öster | Loan |
| 2026-07-31 | Linus Carlstrand | Öster | AIK | €1.4m |
| 2026-07-27 | Niilo Mäenpää | Öster | Haka | Loan |
| 2026-03-26 | Joel Voelkerling Persson | Öster | Rosengård | Free |
| 2026-03-24 | Niklas Söderberg | Öster | United Nordic | Free |
| 2026-03-11 | Karl Wendt | Lechia Gdansk | Öster | Loan |
| 2026-02-27 | Lukas Bergquist | Öster | AIK | Free |
| 2026-02-02 | Vladimir Rodic | Öster | FC Buxoro | Free |
| 2026-01-29 | Linus Carlstrand | IFK Göteborg | Öster | €250k |
| 2026-01-29 | Filip Olsson | IK Sirius | Öster | Free |
| 2026-01-29 | Musa Jatta | AC Oulu | Öster | Free |
| 2026-01-29 | Samuel Burakovsky | Bodø / Glimt | Öster | Loan |
| 2026-01-29 | Robin Wallinder | Öster | Mjällby AIF | Free |
| 2026-01-01 | Niilo Mäenpää | Ilves | Öster | Free |
| 2025-11-30 | Player | Räppe | Öster | Free |
| 2025-07-22 | Anssi Suhonen | Hamburger SV | Öster | Loan |
| 2025-07-21 | Vincent Poppler | Öster | Oddevold | Loan |
| 2025-07-20 | Oskar Gabrielsson | Öster | Rosengård | Free |
| 2025-07-09 | Joel Voelkerling Persson | US Lecce | Öster | Free |
| 2025-07-08 | Oscar Uddenäs | Excelsior Rotterdam | Öster | Free |