Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| GCTS | Lee Kyeongho | Director | 09/30/2026 | Zuteilung | — | 12,971 | — | Form 4 |
| GCTS | Barker Robert | Director | 09/30/2026 | Zuteilung | — | 12,971 | — | Form 4 |
| GCTS | Tuder Jeffrey | Director | 09/30/2026 | Zuteilung | — | 12,971 | — | Form 4 |
| GCTS | Chan Nelson | Director | 09/30/2026 | Zuteilung | — | 12,971 | — | Form 4 |
| GCTS | Chun Kukjin | Director | 09/30/2026 | Zuteilung | — | 12,971 | — | Form 4 |
| GCTS | Shin Hyunsoo | Director | 09/30/2026 | Zuteilung | — | 12,971 | — | Form 4 |
| GCT | Bernes Marshall | Head of Brand Center | 09/25/2026 | Verkauf | 54.31 | 13,800 | 749,435 | Form 4 |
| GCT | Bernes Marshall | Head of Brand Center | 09/24/2026 | Verkauf | 53.58 | 4,497 | 240,966 | Form 4 |
| GCT | Bernes Marshall | Head of Brand Center | 09/22/2026 | Verkauf | 53.58 | 15,703 | 841,444 | Form 4 |
| GCT | Bernes Marshall | Head of Brand Center | 09/21/2026 | Verkauf | 53.47 | 12,000 | 641,686 | Form 4 |
| GCT | Chen Zhiwu | Director | 09/18/2026 | Verkauf | 52.88 | 1,800 | 95,184 | Form 4 |
| GCT | Chen Zhiwu | Director | 09/18/2026 | Verkauf | 53.48 | 1,200 | 64,176 | Form 4 |
| GCT | Chen Zhiwu | Director | 09/16/2026 | Verkauf | 52.96 | 1,500 | 79,440 | Form 4 |
| GCT | Chen Zhiwu | Director | 09/14/2026 | Verkauf | 52.38 | 1,500 | 78,570 | Form 4 |
| GCTS | Sum Alex | Sr. VP of Sales and Marketing | 09/10/2026 | Zuteilung | — | 75,000 | — | Form 4 |
| GCTS | Schlaefer John | President, CEO & Class III Dir | 09/10/2026 | Zuteilung | — | 150,000 | — | Form 4 |
| GCTS | Kim Jeong-Min | Chief Technology Officer | 09/10/2026 | Zuteilung | — | 100,000 | — | Form 4 |
| GCTS | Cheng Edmond | Chief Financial Officer | 09/10/2026 | Zuteilung | — | 145,000 | — | Form 4 |
| GCT | Wu Lei | Chief Executive Officer | 08/20/2026 | Optionsausübung | — | 413,942 | — | Form 4 |
| GCT | Lebensburger Kenneth E Jr | Director | 08/17/2026 | Zuteilung | — | 549 | — | Form 4 |
| GCT | Visser Jan William | Director | 08/17/2026 | Zuteilung | — | 549 | — | Form 4 |
| GCT | Chen Zhiwu | Director | 08/17/2026 | Zuteilung | — | 549 | — | Form 4 |
| GCT | Bernes Marshall | Head of Brand Center | 08/13/2026 | Verkauf | 53.00 | 10,000 | 530,000 | Form 4 |
| GCT | Wan Xin | Chief Technology Officer | 08/11/2026 | Verkauf | 51.40 | 27,628 | 1,420,079 | Form 4 |
| GCT | Wan Xin | Chief Technology Officer | 08/11/2026 | Verkauf | 50.55 | 32,372 | 1,636,405 | Form 4 |
| GCT | Bernes Marshall | Head of Brand Center | 08/10/2026 | Verkauf | 51.88 | 5,000 | 259,400 | Form 4 |
| GCT | Schrock Iman Aj | President | 08/10/2026 | Verkauf | 51.61 | 3,300 | 170,313 | Form 4 |
| GCT | Schrock Iman Aj | President | 08/10/2026 | Verkauf | 52.20 | 3,379 | 176,384 | Form 4 |
| GCT | Wu Lei | Chief Executive Officer | 08/10/2026 | Schenkung | — | 6,000 | — | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).