| 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 | 24 Nov 2025 | 0002007757 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | GCTS | Common Stock | Purchase | $32,580 | +25,453 | +3.6% | $1.28 | 737,866 | 20 Nov 2025 | Direct | |
| transaction | GCTS | Common Stock | Purchase | $4,070 | +3,180 | +0.43% | $1.28 | 741,046 | 21 Nov 2025 | Direct |