SJK Seinäjoki: every transfer in and out, fees paid and earned, squad market value, €50k spent and €1.9m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-02 | Apostolos Vellios | TBC | SJK Seinäjoki | Free |
| 2026-08-02 | Facundo Costantini | AEL Limassol | SJK Seinäjoki | Free |
| 2026-07-31 | Karlson Nwanege | Hellas Verona | SJK Seinäjoki | Loan |
| 2026-07-27 | Markus Arsalo | SJK Seinäjoki | AC Oulu | Free |
| 2026-07-23 | Sayibu Yakubu | SJK Seinäjoki | MFK Karvina | Free |
| 2026-07-01 | Samuel Chukwudi | SJK Seinäjoki | SV Ried | Free |
| 2026-07-01 | Olatoundji Tessilimi | SJK Seinäjoki | FK Dukla Prague | Free |
| 2026-03-25 | Muhammed Suso | FK Pardubice | SJK Seinäjoki | Loan |
| 2026-03-11 | Kevin Appiah Nyarko | SJK Seinäjoki | Helsingborg | Free |
| 2026-03-04 | Fallou Ndiaye | SJK Seinäjoki | Kerala Blasters | Free |
| 2026-01-20 | Eetu Mömmö | US Lecce | SJK Seinäjoki | Free |
| 2026-01-19 | Babacar Fati | SJK Seinäjoki | Livingston FC | — |
| 2026-01-16 | Lauri Laine | SJK Seinäjoki | Baník Ostrava B | Free |
| 2026-01-16 | Lauri Laine | SJK Seinäjoki | Banik Ostrava | €150k |
| 2026-01-13 | Miguel Rodríguez | SJK Seinäjoki | TBC | Free |
| 2026-01-13 | Josh Okpolokpo | SJK Seinäjoki | Džiugas Telšiai | Free |
| 2026-01-12 | Ayo Obileye | SJK Seinäjoki | IF Gnistan | Free |
| 2026-01-12 | Alenis Vargas | SJK Seinäjoki | Manisa FK | Loan |
| 2026-01-06 | Albin Björkskog | FF Jaro | SJK Seinäjoki | Free |
| 2026-01-01 | Hemmo Riihimäki | SJK Seinäjoki | TBC | Free |