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 |
|---|---|---|---|---|
| 2026-06-29 | Kaito Taniguchi | Central Coast | Mito HollyHock | Free |
| 2026-04-09 | Patryck | Madureira | Mito HollyHock | Loan |
| 2026-02-10 | Matheus Leiria | Ventforet Kofu | Mito HollyHock | Free |
| 2026-02-01 | Shota Yamashita | High School (J) | Mito HollyHock | Free |
| 2026-02-01 | Seiya Inoue | Avispa Fukuoka | Mito HollyHock | Loan |
| 2026-02-01 | Minato Kamiyama | HollyHock U18 | Mito HollyHock | — |
| 2026-02-01 | Koki Ando | RKU Kashiwa HS | Mito HollyHock | Free |
| 2026-02-01 | Kishin Shimatani | RKU Kashiwa HS | Mito HollyHock | Free |
| 2026-02-01 | Kirato Sasaki | Kanto G. Univ. | Mito HollyHock | Free |
| 2026-02-01 | Kenta Matsuyama | Mito HollyHock | Avispa Fukuoka | — |
| 2026-01-16 | Y. Kusano | Football Club Mito HollyHock | Nakhonratchasima Mazda FC | Free |
| 2026-01-14 | Shunsuke Saito | Mito HollyHock | KVC Westerlo | €450k |
| 2026-01-12 | Yuto Yamashita | Iwaki FC | Mito HollyHock | — |
| 2026-01-12 | Yoshiki Torikai | Ventforet Kofu | Mito HollyHock | — |
| 2026-01-12 | Travis Takahashi | Mito HollyHock | Cerezo Osaka | — |
| 2026-01-12 | Takumi Mase | Vegalta Sendai | Mito HollyHock | — |
| 2026-01-10 | Danilo | FC Imabari | Mito HollyHock | Free |
| 2026-01-01 | Kishin Gokita | Nihon Uni | Mito HollyHock | Free |
| 2025-08-20 | Shohei Aihara | FC Gifu | Mito HollyHock | — |
| 2025-08-01 | Taishi Semba | Sanf. Hiroshima | Mito HollyHock | Loan |