Sangju S. U18: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2021-01-01 | Dong-jin Kim | Sangju S. U18 | Gimcheon U18 | — |
| 2020-01-01 | Hyeon-yeob Kim | Sangju S. U18 | Myongji Uni | — |
| 2019-01-01 | Dong-jin Kim | Sangju S. Yth. | Sangju S. U18 | — |
| 2018-01-01 | Hyeon-yeob Kim | G. Yeongdeok HS | Sangju S. U18 | — |
| 2016-01-01 | Bum-keun Song | Sangju S. U18 | Korea University | — |
| 2013-01-01 | Bum-keun Song | Seil MS | Sangju S. U18 | — |