Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2025-09-12 Purchase | 2025-09-16 4:16 pm | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 44,067 | $1.51 | $66,541 | 694,321 (Direct) | View |
| 2025-09-04 Purchase | 2025-09-08 4:04 pm | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 18,550 | $1.2822 | $23,785 | 650,254 (Direct) | View |
| 2025-08-15 Purchase | 2025-08-19 4:00 pm | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 121,000 | $1.26 | $152,460 | 631,704 (Direct) | View |
| 2025-06-10 Purchase | 2025-06-12 09:11 am | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 85,000 | $1.1788 | $100,200 | 492,248 (Direct) | View |
| 2025-06-04 Purchase | 2025-06-06 4:03 pm | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 160,000 | $1.0237 | $163,787 | 407,248 (Direct) | View |
| 2025-05-23 Purchase | 2025-05-27 4:05 pm | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 77,000 | $1.04 | $80,080 | 247,248 (Direct) | View |
| 2025-05-20 Purchase | 2025-05-21 4:39 pm | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 86,000 | $1.18 | $101,480 | 170,248 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2025-09-30 Option Award | 2025-10-03 4:03 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | TUDER JEFFREY Class III Director Director | 18,092 | $0 | 94,893 (Direct) | View |
| 2025-09-30 Option Award | 2025-10-02 4:08 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 18,092 | $0 | 712,413 (Direct) | View |
| 2025-09-30 Option Award | 2025-10-02 4:06 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Lee Kyeongho Chairman & Class III Director | 18,092 | $0 | 1,039,825 (Direct) | View |
| 2025-09-30 Option Award | 2025-10-02 4:06 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Chun Kukjin Class I Director Director | 18,092 | $0 | 82,339 (Direct) | View |
| 2025-09-30 Option Award | 2025-10-02 4:05 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Chan Nelson Class I Director Director | 18,092 | $0 | 78,604 (Direct) | View |
| 2025-09-30 Option Award | 2025-10-02 4:04 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Barker Robert Class II Director Director | 18,092 | $0 | 95,413 (Direct) | View |
| 2025-09-26 Other | 2025-09-30 4:02 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Schlaefer John President, CEO & Class III Dir | 555 | $0 | 203,283 (Direct) | View |
| 2025-09-19 Option Award | 2025-09-23 4:07 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Kim Jeong-Min Chief Technology Officer | 75,000 | $0 | 302,701 (Direct) | View |
| 2025-09-19 Option Award | 2025-09-23 4:07 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Schlaefer John President, CEO & Class III Dir | 75,000 | $0 | 202,173 (Direct) | View |
| 2025-09-19 Option Award | 2025-09-23 4:06 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Cheng Edmond Chief Financial Officer | 75,000 | $0 | 151,000 (Direct) | View |
| 2025-09-19 Option Award | 2025-09-23 4:05 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Sum Alex Sr. VP of Sales and Marketing | 75,000 | $0 | 183,743 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 4:34 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | TUDER JEFFREY Class III Director Director | 18,456 | $0 | 76,801 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 4:33 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 18,456 | $0 | 510,704 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 4:32 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Lee Kyeongho Chairman & Class III Director | 18,456 | $0 | 1,021,733 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 4:31 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Chun Kukjin Class I Director Director | 18,456 | $0 | 64,247 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 4:30 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Chan Nelson Class I Director Director | 18,456 | $0 | 60,512 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 4:28 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Barker Robert Class II Director Director | 18,456 | $0 | 77,321 (Direct) | View |
| 2025-03-26 Other | 2025-04-23 4:09 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | TUDER JEFFREY Class III Director Director | 37,023 | $0 | 74,634 (Direct) | View |
| 2024-03-26 Option Award(A) | 2025-04-14 8:27 pm | N/A 2029-04-19 | GCT Semiconductor Holding Inc. | GCTS | Barker Robert Class II Director Director | 19,609 | $0 | 19,609 (Direct) | View |
| 2024-03-26 Option Award(A) | 2025-04-07 5:16 pm | N/A 2029-04-19 | GCT Semiconductor Holding Inc. | GCTS | Kim Jeemee VP of Engineering & CTO | 310,060 | $0 | 310,060 (Direct) | View |
| 2025-03-31 Option Award | 2025-04-02 4:09 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Barker Robert Class II Director Director | 16,768 | $0 | 58,865 (Direct) | View |
| 2025-03-31 Option Award | 2025-04-02 4:08 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 16,768 | $0 | 84,248 (Direct) | View |
| 2025-03-31 Option Award | 2025-04-02 4:08 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Chun Kukjin Class I Director Director | 16,768 | $0 | 45,791 (Direct) | View |
| 2025-03-31 Option Award | 2025-04-02 4:07 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Lee Kyeongho Chairman & Class III Director | 16,768 | $0 | 1,003,277 (Direct) | View |
| 2025-03-31 Option Award | 2025-04-02 4:06 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | TUDER JEFFREY Class III Director Director | 16,768 | $0 | 42,056 (Direct) | View |
| 2025-03-31 Option Award | 2025-04-02 4:05 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Chan Nelson Class I Director Director | 16,768 | $0 | 42,056 (Direct) | View |
| 2025-03-26 Other | 2025-03-28 4:00 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Concord Sponsor Group III LLC 10% Owner | 7,049,327 | $0 | 3,733,827 (Direct) | View |
| 2024-03-26 Option Award(A) | 2025-02-27 4:01 pm | N/A 2025-02-23 | GCT Semiconductor Holding Inc. | GCTS | Schlaefer John President, CEO & Class III Dir | 227,322 | $0 | 148,622 (Direct) | View |
| 2024-03-26 Option Award(A) | 2025-02-27 4:00 pm | N/A 2025-02-23 | GCT Semiconductor Holding Inc. | GCTS | Sum Alex Sr. VP of Sales and Marketing | 145,441 | $0 | 55,298 (Direct) | View |
| 2025-01-13 Exercise | 2025-02-21 6:54 pm | N/A 2025-02-23 | GCT Semiconductor Holding Inc. | GCTS | Schlaefer John President, CEO & Class III Dir | 35,669 | $0 | 127,173 (Direct) | View |
| 2025-01-13 Exercise | 2025-02-21 6:54 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Schlaefer John President, CEO & Class III Dir | 35,669 | $0.11 | 127,173 (Direct) | View |
| 2025-02-19 Exercise | 2025-02-21 6:02 pm | N/A 2025-02-23 | GCT Semiconductor Holding Inc. | GCTS | Sum Alex Sr. VP of Sales and Marketing | 13,259 | $0 | 108,743 (Direct) | View |
| 2025-02-19 Exercise | 2025-02-21 6:02 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Sum Alex Sr. VP of Sales and Marketing | 13,259 | $0.11 | 108,743 (Direct) | View |
| 2024-12-31 Option Award | 2025-01-02 4:07 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | TUDER JEFFREY Class III Director Director | 11,802 | $0 | 25,288 (Direct) | View |
| 2024-12-31 Option Award | 2025-01-02 4:06 pm | N/A N/A | GCT Semiconductor Holding Inc. | GCTS | Shin Hyunsoo Class II Director Director | 11,802 | $0 | 67,693 (Direct) | View |