Seoul N. United: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-01-01 | Kyeong-tae Lee | Seoul N. United | Seoul Jungnang | — |
| 2024-01-01 | Kyeong-tae Lee | Without Club | Seoul N. United | — |
| 2023-07-14 | Min-kwang Jeon | Pohang Steelers | Seoul N. United | Loan |
| 2023-05-26 | Won-cheol Choe | Seoul N. United | Chuncheon FC | — |
| 2021-03-01 | Won-cheol Choe | D. Korea Railway | Seoul N. United | — |