| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Shin Hyunsoo | Director, Class II Director | C/O GCT SEMICONDUCTOR HOLDING, INC., 2290 NORTH 1ST STREET, SUITE 201, SAN JOSE | /s/ Edmond Cheng, attorney-in-fact | 19 Aug 2025 | 0002007757 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | GCTS | Common Stock | Purchase | $152,460 | +121,000 | +24% | $1.26 | 631,704 | 15 Aug 2025 | Direct |