Nagoya Grampus Eight (J1 League): every transfer in and out, fees paid and earned, squad market value, €3.5m spent and €3.6m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2027-01-01 | Ryuki Oiso | Tokai Gakuen | Nagoya Grampus | Free |
| 2026-12-31 | Ryoga Kida | Argentinos Jrs. | Nagoya Grampus | Free |
| 2026-03-27 | Keiya Shiihashi | Nagoya Grampus | Avispa Fukuoka | Loan |
| 2026-02-08 | Kasper Junker | Nagoya Grampus Eight | Buriram United | Free |
| 2026-02-01 | Tomoki Takamine | H. C. Sapporo | Nagoya Grampus | Loan |
| 2026-02-01 | Soichiro Mori | Grampus U18 | Nagoya Grampus | — |
| 2026-02-01 | Hiroaki Hagi | Grampus U18 | Nagoya Grampus | — |
| 2026-02-01 | Harumu Kubo | Maebashi Ik. HS | Nagoya Grampus | Free |
| 2026-01-16 | Chang-rae Ha | Nagoya Grampus | Daejeon Hana C. | — |
| 2026-01-12 | Tomoya Koyamatsu | Kashiwa Reysol | Nagoya Grampus | — |
| 2026-01-12 | Marcus Vinicius | FC Imabari | Nagoya Grampus | — |
| 2025-08-15 | Haruya Fujii | KV Kortrijk | Nagoya Grampus | €2m |
| 2025-08-04 | Yudai Kimura | Tokyo Verdy | Nagoya Grampus | — |
| 2025-06-09 | Kyota Sakakibara | Nagoya Grampus | Fujieda MYFC | Loan |
| 2025-06-06 | Yves Avelete | Nagoya Grampus | FC Osaka | Loan |
| 2025-06-02 | Daiki Miya | Nagoya Grampus | H. C. Sapporo | Loan |
| 2025-02-08 | Shumpei Naruse | Nagoya Grampus | Kashiwa Reysol | Free |
| 2025-02-01 | Tojiro Kubo | Nagoya Grampus | Kashiwa Reysol | — |
| 2025-02-01 | Takuji Yonemoto | Nagoya Grampus | Kyoto Sanga | — |
| 2025-02-01 | Shungo Sugiura | Grampus U18 | Nagoya Grampus | — |