Ulsan HD (K League 1): every transfer in and out, fees paid and earned, squad market value, €6.2m spent and €3.2m earned. Tracked squad: ACTUAL Value €6.6m vs €12m market value. Valued as of 2026-08-26.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-19 | Yong-woo Park | Al-Ain | Ulsan HD | Free |
| 2026-07-09 | Thomas Oude Kotte | Football Club Anyang | Ulsan HD | Free |
| 2026-07-09 | Byeong-keun Hwang | Football Club Anyang | Ulsan HD | Free |
| 2026-07-01 | Min-woo Kang | Ulsan HD | Kataller Toyama | Loan |
| 2026-02-20 | Seung-beom Ko | Ulsan HD | Suwon Bluewings | Free |
| 2026-02-12 | Jae-sang Jeong | Daegu FC | Ulsan HD | Free |
| 2026-02-12 | Kang-min Choi | Ulsan HD | Daegu FC | Free |
| 2026-02-02 | Matías Lacava | Ulsan HD | FC Vizela | Free |
| 2026-01-17 | Woo-young Jung | Ulsan HD | Kataller Toyama | Free |
| 2026-01-16 | Won-sang Um | Ulsan HD | Citizen | Free |
| 2026-01-16 | Gustav Ludwigson | Ulsan HD | Citizen | Free |
| 2026-01-16 | Min-hyuk Kim | Ulsan HD | Busan I'Park | Free |
| 2026-01-16 | Jae-seong Park | Ulsan HD | Hwaseong | Free |
| 2025-08-23 | Min-woo Kang | Ulsan HD | KRC Genk | Loan |
| 2025-07-24 | Min-woo Kim | Ulsan HD | Suwon Bluewings | Free |
| 2025-07-18 | Marcão | Al-Ahli | Ulsan HD | Free |
| 2025-07-09 | Seung-hyun Jung | Al-Wasl | Ulsan HD | Free |
| 2025-07-06 | Yago Cariello | Ulsan HD | Zhejiang | Loan |
| 2025-07-01 | Seong-bin Jung | Ulsan HD | FC Liefering | Loan |
| 2025-06-27 | Sang-jun Park | Ulsan HD | Jeonnam Dragons | Free |