Insider holders · CIK 0001851961
GCT Semiconductor Holding, Inc. · GCTS
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| Kyeongho LeeDirector | 1,096,122 | — | 1,096,122 | Jul 2, 2026 · 4:48 pm EDT | Form 4 |
| Hyunsoo ShinDirector | 814,068 | — | 814,068 | Jul 2, 2026 · 4:46 pm EDT | Form 4 |
| Jeong-Min KimChief Technology Officer | 402,701 | — | 402,701 | Sep 14, 2026 · 4:28 pm EDT | Form 4 |
| John SchlaeferPresident, CEO & Class III Dir | 352,728 | — | 352,728 | Sep 14, 2026 · 4:30 pm EDT | Form 4 |
| Edmond ChengChief Financial Officer | 296,000 | — | 296,000 | Sep 14, 2026 · 4:25 pm EDT | Form 4 |
| Alex SumSr. VP of Sales and Marketing | 258,743 | — | 258,743 | Sep 14, 2026 · 4:32 pm EDT | Form 4 |
| Robert BarkerDirector | 151,710 | — | 151,710 | Jul 2, 2026 · 4:52 pm EDT | Form 4 |
| Jeffrey TuderDirector | 151,190 | — | 151,190 | Jul 7, 2026 · 4:03 pm EDT | Form 4 |
| Nelson ChanDirector | 134,901 | — | 134,901 | Jul 2, 2026 · 4:49 pm EDT | Form 4 |
| Kukjin ChunDirector | 98,636 | — | 98,636 | Jul 2, 2026 · 4:51 pm EDT | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.