Football Club Mito HollyHock (J1 League): every transfer in and out, fees paid and earned, squad market value and €450k earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-31 | Takahiro Iida | Football Club Mito HollyHock | JEF United | Free |
| 2026-07-01 | Yu Funabashi | Kashima Antlers FC | Football Club Mito HollyHock | Loan |
| 2026-07-01 | Rei Ieizumi | Consadole Sapporo | Football Club Mito HollyHock | Free |
| 2026-07-01 | Yasuki Kimoto | FC Tokyo | Football Club Mito HollyHock | Free |
| 2026-07-01 | Kotaro Uchino | Bröndby IF | Football Club Mito HollyHock | Loan |
| 2026-07-01 | Motoki Nishihara | S-Pulse | Football Club Mito HollyHock | Loan |
| 2026-07-01 | Taishi Semba | Sanfrecce Hiroshima | Football Club Mito HollyHock | Free |
| 2026-07-01 | Jakub Slowik | Yokohama FC | Football Club Mito HollyHock | Loan |
| 2026-07-01 | Kirato Sasaki | Football Club Mito HollyHock | Vanraure Hachinohe | Loan |
| 2026-07-01 | Shohei Aihara | Football Club Mito HollyHock | Blaublitz Akita | Free |
| 2026-07-01 | Seiichiro Kubo | Football Club Mito HollyHock | Renofa Yamaguchi | Free |
| 2026-07-01 | Takeshi Ushizawa | Football Club Mito HollyHock | Iwaki | Loan |
| 2026-07-01 | Koki Ando | Football Club Mito HollyHock | Royal Antwerp FC | Free |
| 2026-07-01 | Koya Okuda | Football Club Mito HollyHock | Fukushima United | Free |
| 2026-07-01 | Danilo | Football Club Mito HollyHock | Júbilo Iwata | Free |
| 2026-07-01 | Ryusei Haruna | Football Club Mito HollyHock | Gifu | Loan |
| 2026-07-01 | Yuto Nagao | Football Club Mito HollyHock | Fujieda MYFC | Free |
| 2026-06-29 | Kaito Taniguchi | Central Coast | Mito HollyHock | Free |
| 2026-06-05 | Soki Tokuno | Football Club Mito HollyHock | TIAMO Hirakata | Free |
| 2026-04-09 | Patryck | Madureira | Mito HollyHock | Loan |