Roasso Kumamoto: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-01-19 | Yutaka Michiwaki | Roasso Kumamoto | Avispa Fukuoka | — |
| 2025-07-28 | Rikuto Hashimoto | Vissel Kobe | Roasso Kumamoto | Loan |
| 2025-01-20 | Daichi Ishikawa | Roasso Kumamoto | JEF Utd. Chiba | — |
| 2024-07-22 | Yutaka Michiwaki | Roasso Kumamoto | SK Beveren | Loan |
| 2024-07-09 | Shoji Toyama | Gamba Osaka | Roasso Kumamoto | Loan |
| 2024-01-08 | Rei Hirakawa | Roasso Kumamoto | Júbilo Iwata | — |
| 2023-02-01 | Yutaka Michiwaki | Roasso U18 | Roasso Kumamoto | — |
| 2023-01-09 | Toshiki Takahashi | Roasso Kumamoto | Urawa Reds | — |
| 2023-01-09 | So Kawahara | Roasso Kumamoto | Sagan Tosu | — |
| 2023-01-09 | Naohiro Sugiyama | Roasso Kumamoto | Gamba Osaka | — |
| 2023-01-09 | Daichi Ishikawa | Gainare Tottori | Roasso Kumamoto | — |
| 2022-08-10 | Rei Hirakawa | FC Tokyo | Roasso Kumamoto | — |
| 2022-01-09 | Shohei Aihara | FC Gifu | Roasso Kumamoto | Loan |
| 2021-02-01 | Naohiro Sugiyama | Juntendo Univ. | Roasso Kumamoto | Free |
| 2021-01-09 | Kaito Taniguchi | Roasso Kumamoto | Albirex Niigata | Free |
| 2021-01-09 | Hikaru Nakahara | Roasso Kumamoto | Monte. Yamagata | — |
| 2020-02-01 | Toshiki Takahashi | Kokushikan Univ | Roasso Kumamoto | Free |
| 2020-02-01 | So Kawahara | Fukuoka Univ. | Roasso Kumamoto | Free |
| 2020-01-04 | Kaito Taniguchi | Iwate Grulla M. | Roasso Kumamoto | Free |
| 2019-02-01 | Hikaru Nakahara | Komazawa Univ. | Roasso Kumamoto | Free |