JJK (Veikkausliiga): every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-02-21 | Lauri Vetri | VPS | JJK | Free |
| 2025-01-01 | Player | Inter Turku II | JJK | Free |
| 2024-08-06 | Eetu Venäläinen | JJK | JIPPO | Free |
| 2024-02-23 | Player | Ilves II | JJK | Free |
| 2024-02-01 | V. Viljala | JJK | PK-35 | Free |
| 2024-01-01 | Roope Salo | JJK | AC Oulu | Free |
| 2024-01-01 | Oskar Pihlaja | JJK | JIPPO | Free |
| 2023-08-11 | Aleksi Tarvonen | KTP | JJK | Loan |
| 2023-06-19 | Player | JJK | Free | |
| 2023-04-20 | Player | Klubi-04 | JJK | Free |
| 2023-04-06 | Eetu Venäläinen | RoPS | JJK | Free |
| 2023-01-26 | Oskar Pihlaja | SJK Akatemia | JJK | Free |
| 2022-01-10 | Tuomas Koivisto | JJK | SJK Akatemia | Free |
| 2022-01-01 | V. Viljala | Vaajakoski | JJK | Free |
| 2020-09-13 | Eero Ylönen | MP | JJK | Loan |
| 2020-01-01 | Player | JJK | Vaajakoski | Free |
| 2019-04-08 | Player | JJK | Klubi-04 | Free |
| 2019-03-10 | Player | JJK | SalPa | Free |
| 2019-02-26 | Player | JJK | MiPK | Free |
| 2019-01-07 | Väinö Vehkonen | JJK | Klubi-04 | Free |