| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2026 | Kristiansund | Eliteserien | 2 | 0 | 0 | 0 | 0 | 6.2 |
| 2025 | Stabaek | OBOS-ligaen | 21 | 8 | 1 | 1 | 0 | – |
| 2024 | Kristiansund | Eliteserien | 26 | 4 | 1 | 5 | 0 | 6.7 |
| 2023 | Kristiansund | Eliteserien | 2 | 0 | 0 | 0 | 0 | 6.5 |
| 2023 | Kristiansund | OBOS-ligaen | 23 | 0 | 0 | 3 | 0 | – |
| 2022 | Kristiansund | Eliteserien | 18 | 0 | 0 | 3 | 0 | 6.7 |
| 2021 | Kristiansund | Eliteserien | 17 | 1 | 1 | 4 | 0 | 6.6 |
| 2021 | Fredrikstad | OBOS-ligaen | 8 | 0 | 1 | 0 | 0 | – |
| 2020 | Jerv | OBOS-ligaen | 13 | 0 | 0 | 2 | 0 | – |
| 2020 | Stabaek | Eliteserien | 9 | 0 | 0 | 0 | 0 | 6.4 |
| 2019 | Kristiansund | Eliteserien | 14 | 1 | 0 | 1 | 1 | 6.3 |
| 2018 | Kristiansund | Eliteserien | 1 | 0 | 0 | 0 | 0 | 6.3 |
| 2017 | Kristiansund | Eliteserien | 2 | 0 | 0 | 0 | 0 | – |
| Total | 156 | 14 | 4 | 19 | 1 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| - | Stabaek | Kristiansund | Free agent | |
| - | Kristiansund | Stabaek | Free agent | |
| 08 ene 2021 | Stabaek | Kristiansund | Transfer | |
| - | Fredrikstad | Stabaek | Return from loan | |
| - | Stabaek | Fredrikstad | Loan | |
| - | Jerv | Stabaek | Return from loan | |
| 10 oct 2020 | Stabaek | Jerv | Loan | |
| - | Kristiansund | Stabaek | Free agent |
J. Isaksen career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.