| 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 | 12 Jun 2025 | 0002007757 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | GCTS | Common Stock | Purchase | $48,000 | +40,000 | +9.8% | $1.20 | 447,248 | 10 Jun 2025 | Direct | |
| transaction | GCTS | Common Stock | Purchase | $52,200 | +45,000 | +10% | $1.16 | 492,248 | 10 Jun 2025 | Direct |