GCT SemiconductorGCTS
Semiconductors & chip supply chain
Insider transactions
Directors, officers and 10% owners, as reported on Forms 3, 4 and 5. Grants, option exercises and shares withheld for tax are shown but not counted as buying or selling.
- Open-market buys
- 3
- Open-market sales
- 0
- Shares bought
- 45,358
- Shares sold
- 0
Past 12 months · $58,058 bought, $0.00 sold
| Filed | Insider | Transaction | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|
| traded Sep 10, 2026 | Edmond ChengCFO | Grant or awardForm 4 | 145,000 | $0.00 | $0.00 | 296,000 |
| traded Sep 10, 2026 | Jeongmin KimCTO | Grant or awardForm 4 | 100,000 | $0.00 | $0.00 | 402,701 |
| traded Sep 10, 2026 | John SchlaeferDivCEO · Pres · Director | Grant or awardForm 4 | 150,000 | $0.00 | $0.00 | 352,728 |
| traded Sep 10, 2026 | Alex SumSVP | Grant or awardForm 4 | 75,000 | $0.00 | $0.00 | 258,743 |
| traded Jun 30, 2026 | Jeffrey TuderDirector | Grant or awardForm 4 | 9,259 | $0.00 | $0.00 | 151,190 |
| traded Jun 30, 2026 | Robert BarkerDirector | Grant or awardForm 4 | 9,259 | $0.00 | $0.00 | 151,710 |
| traded Jun 30, 2026 | Hyunsoo ShinDirector | Grant or awardForm 4 | 9,259 | $0.00 | $0.00 | 814,068 |
| traded Jun 30, 2026 | Kukjin ChunDirector | Grant or awardForm 4 | 9,259 | $0.00 | $0.00 | 98,636 |
| traded Jun 30, 2026 | Kyeongho LeeDirector | Grant or awardForm 4 | 9,259 | $0.00 | $0.00 | 1.1M |
| traded Jun 30, 2026 | Nelson ChanDirector | Grant or awardForm 4 | 9,259 | $0.00 | $0.00 | 134,901 |
| traded Mar 31, 2026 | Jeffrey TuderDirector | Grant or awardForm 4 | 24,122 | $0.00 | $0.00 | 141,931 |
| traded Mar 31, 2026 | Robert BarkerDirector | Grant or awardForm 4 | 24,122 | $0.00 | $0.00 | 142,451 |
| traded Mar 31, 2026 | Kukjin ChunDirector | Grant or awardForm 4 | 24,122 | $0.00 | $0.00 | 89,377 |
| traded Mar 31, 2026 | Nelson ChanDirector | Grant or awardForm 4 | 24,122 | $0.00 | $0.00 | 125,642 |
| traded Mar 31, 2026 | Kyeongho LeeDirector | Grant or awardForm 4 | 24,122 | $0.00 | $0.00 | 1.1M |
| traded Mar 31, 2026 | Hyunsoo ShinDirector | Grant or awardForm 4 | 24,122 | $0.00 | $0.00 | 804,809 |
| traded Feb 23, 2026 | Kukjin ChunDirector | GiftForm 4 | 40,000 | $0.00 | $0.00 | 65,255 |
| traded Dec 31, 2025 | Kukjin ChunDirector | Grant or awardForm 4 | 22,916 | $0.00 | $0.00 | 105,255 |
| traded Dec 31, 2025 | Hyunsoo ShinDirector | Grant or awardForm 4 | 22,916 | $0.00 | $0.00 | 780,687 |
| traded Dec 31, 2025 | Nelson ChanDirector | Grant or awardForm 4 | 22,916 | $0.00 | $0.00 | 101,520 |
| traded Dec 31, 2025 | Kyeongho LeeDirector | Grant or awardForm 4 | 22,916 | $0.00 | $0.00 | 1.1M |
| traded Dec 31, 2025 | Jeffrey TuderDirector | Grant or awardForm 4 | 22,916 | $0.00 | $0.00 | 117,809 |
| traded Dec 31, 2025 | Robert BarkerDirector | Grant or awardForm 4 | 22,916 | $0.00 | $0.00 | 118,329 |
| traded Nov 25, 2025 | Hyunsoo ShinDirector | Open-market buyForm 4 | 16,725 | $1.28 | $21,408 | 757,771 |
| traded Nov 21, 2025 | Hyunsoo ShinDirector | Open-market buyForm 4 | 3,180 | $1.28 | $4,070 | 741,046 |
| traded Nov 20, 2025 | Hyunsoo ShinDirector | Open-market buyForm 4 | 25,453 | $1.28 | $32,580 | 737,866 |
| traded Sep 30, 2025 | Jeffrey TuderDirector | Grant or awardForm 4 | 18,092 | $0.00 | $0.00 | 94,893 |
| traded Sep 30, 2025 | Kukjin ChunDirector | Grant or awardForm 4 | 18,092 | $0.00 | $0.00 | 82,339 |
| traded Sep 30, 2025 | Kyeongho LeeDirector | Grant or awardForm 4 | 18,092 | $0.00 | $0.00 | 1.0M |
| traded Sep 30, 2025 | Robert BarkerDirector | Grant or awardForm 4 | 18,092 | $0.00 | $0.00 | 95,413 |
| traded Sep 30, 2025 | Hyunsoo ShinDirector | Grant or awardForm 4 | 18,092 | $0.00 | $0.00 | 712,413 |
| traded Sep 30, 2025 | Nelson ChanDirector | Grant or awardForm 4 | 18,092 | $0.00 | $0.00 | 78,604 |
| traded Sep 26, 2025 | John SchlaeferDivCEO · Pres · Director | OtherForm 4 | 555 | $0.00 | $0.00 | 202,728 |
| traded Sep 19, 2025 | Jeongmin KimCTO | Grant or awardForm 4 | 75,000 | $0.00 | $0.00 | 302,701 |
| traded Sep 19, 2025 | Alex SumSVP | Grant or awardForm 4 | 75,000 | $0.00 | $0.00 | 183,743 |
| traded Sep 19, 2025 | John SchlaeferDivCEO · Pres · Director | Grant or awardForm 4 | 75,000 | $0.00 | $0.00 | 202,173 |
| traded Sep 19, 2025 | Edmond ChengCFO | Grant or awardForm 4 | 75,000 | $0.00 | $0.00 | 151,000 |
| traded Sep 12, 2025 | Hyunsoo ShinDirector | Open-market buyForm 4 | 44,067 | $1.51 | $66,541 | 694,321 |
| traded Sep 5, 2025 | Hyunsoo ShinDirector | Open-market buyForm 4 | 10,300 | $1.30 | $13,390 | 650,254 |
| traded Sep 4, 2025 | Hyunsoo ShinDirector | Open-market buyForm 4 | 8,250 | $1.26 | $10,395 | 639,954 |