Nagoya Grampus Eight (J1 League): every transfer in and out, fees paid and earned, squad market value, €19m spent and €3.6m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-01 | Kennedy Egbus Mikuni | Nagoya Grampus Eight | Avispa Fukuoka | Loan |
| 2026-07-01 | Ken Masui | Nagoya Grampus Eight | KV Kortrijk | Loan |
| 2026-07-01 | Soichiro Mori | Nagoya Grampus Eight | Fagiano Okayama Sports Club | Loan |
| 2026-07-01 | Haruki Yoshida | Nagoya Grampus Eight | Ryūkyū | Loan |
| 2026-07-01 | Haruto Suzuki | Nagoya Grampus Eight | Gifu | Loan |
| 2026-07-01 | Kyota Sakakibara | Nagoya Grampus Eight | Zweigen Kanazawa | Loan |
| 2026-03-27 | Keiya Shiihashi | Nagoya Grampus | Avispa Fukuoka | Loan |
| 2026-02-08 | Kasper Junker | Nagoya Grampus Eight | Buriram United | Free |
| 2026-02-01 | Harumu Kubo | Maebashi Ik. HS | Nagoya Grampus | Free |
| 2026-02-01 | Hiroaki Hagi | Grampus U18 | Nagoya Grampus | — |
| 2026-02-01 | Soichiro Mori | Grampus U18 | Nagoya Grampus | — |
| 2026-02-01 | Tomoki Takamine | H. C. Sapporo | Nagoya Grampus | Loan |
| 2026-02-01 | Gen Kato | Nagoya Grampus Eight | Omiya Ardija | Loan |
| 2026-01-29 | Ken Masui | Nagoya Grampus Eight | Beerschot VA | Loan |
| 2026-01-16 | Chang-rae Ha | Nagoya Grampus | Daejeon Hana C. | — |
| 2026-01-16 | Chang-rae Ha | Nagoya Grampus Eight | Citizen | Free |
| 2026-01-12 | Marcus Vinicius | FC Imabari | Nagoya Grampus | — |
| 2026-01-12 | Tomoya Koyamatsu | Kashiwa Reysol | Nagoya Grampus | — |
| 2026-01-12 | Marcus Vinicius | Imabari | Nagoya Grampus Eight | Free |
| 2026-01-12 | Player | Nagoya Grampus Eight | Sagamihara | Free |