GCT Semiconductor Holding Inc.
Last updated September 27, 2026
Organization details
- Legal name
- GCT Semiconductor Holding Inc.
- Ownership
- Public
- Status
- Active
- Headquarters country
- United States
- Ticker symbol
- GCTS
- Primary stock exchange
- NYSE
Identifiers
- SEC CIK
- 0001851961
Board of directors
-
Hyunsoo Shin · DirectorSince 2024
-
Jeffrey Tuder · DirectorSince 2024
-
John Schlaefer · Director · President, CEO & Class III DirSince 2024
-
Kukjin Chun · DirectorSince 2024
-
Kyeongho Lee · Director · Chairman & Class III DirectorSince 2024
-
Lawrence E. Leibowitz · DirectorSince 2023
-
Nelson C. Chan · DirectorSince 2024
-
Peter Ort · DirectorSince 2023
-
Robert Barker · DirectorSince 2024
-
Thomas C. King · DirectorSince 2023
Chief executives
John Schlaefer
· President, CEO & Class III Dir
Since March 2024
Board connections
5 of this board's directors also sit on 8 other boards.
- via Jeffrey Tuder, Lawrence E. Leibowitz and Thomas C. King
- via Jeffrey Tuder and Peter Ort
- via Thomas C. King
- via Nelson C. Chan
- via Jeffrey Tuder
- via Peter Ort
- via Nelson C. Chan
- via Nelson C. Chan
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $58,058
- 3 purchases by 1 insider
- Sold, last 12 months
- $0
- 0 sales by 0 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 10, 2026 | Cheng Edmond Officer (Chief Financial Officer) | Grant or award | +145,000 | — | — |
| Sep 10, 2026 | Kim Jeong-Min Officer (Chief Technology Officer) | Grant or award | +100,000 | — | — |
| Sep 10, 2026 | John Schlaefer Director, Officer (President, CEO & Class III Dir) | Grant or award | +150,000 | — | — |
| Sep 10, 2026 | Sum Alex Officer (Sr. VP of Sales and Marketing) | Grant or award | +75,000 | — | — |
| Jun 30, 2026 | Robert Barker Director, Class II Director | Grant or award | +9,259 | — | — |
| Jun 30, 2026 | Nelson C. Chan Director, Class I Director | Grant or award | +9,259 | — | — |
| Jun 30, 2026 | Kukjin Chun Director, Class I Director | Grant or award | +9,259 | — | — |
| Jun 30, 2026 | Hyunsoo Shin Director, Class II Director | Grant or award | +9,259 | — | — |
| Jun 30, 2026 | Kyeongho Lee Director, Chairman & Class III Director | Grant or award | +9,259 | — | — |
| Jun 30, 2026 | Jeffrey Tuder Director, Class III Director | Grant or award | +9,259 | — | — |
| Mar 31, 2026 | Jeffrey Tuder Director, Class III Director | Grant or award | +24,122 | — | — |
| Mar 31, 2026 | Kyeongho Lee Director, Chairman & Class III Director | Grant or award | +24,122 | — | — |
| Mar 31, 2026 | Nelson C. Chan Director, Class I Director | Grant or award | +24,122 | — | — |
| Mar 31, 2026 | Kukjin Chun Director, Class I Director | Grant or award | +24,122 | — | — |
| Mar 31, 2026 | Robert Barker Director, Class II Director | Grant or award | +24,122 | — | — |
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