Boin HS: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-02-01 | Hyeung-jun Noh | Boin HS | V-V. Nagasaki | Free |
| 2026-01-16 | Jung-min Go | Boin HS | Incheon Utd. | Free |
| 2025-02-01 | Keun-hyeong Lee | Boin HS | Kawasaki Front. | Free |
| 2025-01-17 | Chang-woo Lee | Boin HS | Pohang Steelers | Free |
| 2024-01-01 | Neung Kwon | Boin HS | Without Club | — |
| 2024-01-01 | Jung-min Go | Dongnae HS | Boin HS | — |
| 2023-01-01 | Keun-hyeong Lee | Jeonbuk H. U18 | Boin HS | — |
| 2023-01-01 | Hyeung-jun Noh | Suwon WC U15 | Boin HS | — |
| 2022-01-01 | Jang Han-gyeol Park | Boin HS | FC Seoul | Free |
| 2022-01-01 | Chang-woo Lee | Joongdong MS | Boin HS | — |
| 2021-01-07 | Han-beom Lee | Boin HS | FC Seoul | Free |
| 2021-01-01 | Neung Kwon | Seongnam FC U15 | Boin HS | — |
| 2020-01-01 | Jong-min Kim | Boin HS | Gimcheon Univ. | — |
| 2019-01-01 | Jang Han-gyeol Park | Mullae MS | Boin HS | — |
| 2018-01-01 | Jae-ik Lee | Boin HS | Gangwon FC | Free |
| 2018-01-01 | Han-beom Lee | Seil MS | Boin HS | — |
| 2017-01-01 | Jong-min Kim | Gunpo MS | Boin HS | — |
| 2017-01-01 | Gun-hee Lee | Boin HS | Hanyang Univ. | — |
| 2016-01-01 | Gun-hee Lee | Gyeongnam U18 | Boin HS | — |
| 2016-01-01 | Dae-won Kim | Boin HS | Daegu FC | Free |