GCTS
GCT Semiconductor Holding, Inc.
NYSE · Technology · Semiconductors · US
$1.77
+1.14%0
Insider buys (3m)
0
Insider sells (3m)
$0.00
Net value (3m)
-33.6%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Jul 7, 2026 | TUDER JEFFREY · director, other: Class III Director | A-Award | 9,259 | $0.00 |
| Jul 2, 2026 | Shin Hyunsoo · director, other: Class II Director | A-Award | 9,259 | $0.00 |
| Jul 2, 2026 | Chan Nelson · director, other: Class I Director | A-Award | 9,259 | $0.00 |
| Jul 2, 2026 | Barker Robert · director, other: Class II Director | A-Award | 9,259 | $0.00 |
| Jul 2, 2026 | Chun Kukjin · director, other: Class I Director | A-Award | 9,259 | $0.00 |
| Jul 2, 2026 | Lee Kyeongho · director, other: Chairman & Class III Director | A-Award | 9,259 | $0.00 |
| Apr 2, 2026 | Chun Kukjin · director, other: Class I Director | A-Award | 24,122 | $0.00 |
| Apr 2, 2026 | Barker Robert · director, other: Class II Director | A-Award | 24,122 | $0.00 |
| Apr 2, 2026 | Shin Hyunsoo · director, other: Class II Director | A-Award | 24,122 | $0.00 |
| Apr 2, 2026 | Chan Nelson · director, other: Class I Director | A-Award | 24,122 | $0.00 |
| Apr 2, 2026 | Lee Kyeongho · director, other: Chairman & Class III Director | A-Award | 24,122 | $0.00 |
| Apr 2, 2026 | TUDER JEFFREY · director, other: Class III Director | A-Award | 24,122 | $0.00 |
| Jan 5, 2026 | Chun Kukjin · director, other: Class I Director | A-Award | 22,916 | $0.00 |
| Jan 5, 2026 | Barker Robert · director, other: Class II Director | A-Award | 22,916 | $0.00 |
| Jan 5, 2026 | Chan Nelson · director, other: Class I Director | A-Award | 22,916 | $0.00 |
| Jan 5, 2026 | Shin Hyunsoo · director, other: Class II Director | A-Award | 22,916 | $0.00 |
| Jan 5, 2026 | Lee Kyeongho · director, other: Chairman & Class III Director | A-Award | 22,916 | $0.00 |
| Jan 5, 2026 | TUDER JEFFREY · director, other: Class III Director | A-Award | 22,916 | $0.00 |
| Nov 28, 2025 | Shin Hyunsoo · director, other: Class II Director | Purchase | 16,725 | $1.28 |
| Nov 24, 2025 | Shin Hyunsoo · director, other: Class II Director | Purchase | 25,453 | $1.28 |
| Nov 24, 2025 | Shin Hyunsoo · director, other: Class II Director | Purchase | 3,180 | $1.28 |
| Oct 3, 2025 | TUDER JEFFREY · director, other: Class III Director | A-Award | 18,092 | $0.00 |
| Oct 2, 2025 | Chun Kukjin · director, other: Class I Director | A-Award | 18,092 | $0.00 |
| Oct 2, 2025 | Lee Kyeongho · director, other: Chairman & Class III Director | A-Award | 18,092 | $0.00 |
| Oct 2, 2025 | Shin Hyunsoo · director, other: Class II Director | A-Award | 18,092 | $0.00 |
| Oct 2, 2025 | Barker Robert · director, other: Class II Director | A-Award | 18,092 | $0.00 |
| Oct 2, 2025 | Chan Nelson · director, other: Class I Director | A-Award | 18,092 | $0.00 |
| Sep 23, 2025 | Kim Jeong-Min · officer: Chief Technology Officer | A-Award | 75,000 | $0.00 |
| Sep 23, 2025 | Schlaefer John · director, officer: President, CEO & Class III Dir | A-Award | 75,000 | $0.00 |
| Sep 23, 2025 | Cheng Edmond · officer: Chief Financial Officer | A-Award | 75,000 | $0.00 |
Institutional positioning
13F filings over the trailing two quarters
New 43Increased 25Reduced 8Sold out 6
| Filer | Action | Shares | Filed |
|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2,999,130 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1,744,949 | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | New Position | 1,695,300 | Aug 13, 2026 |
| MARSHALL WACE, LLP | New Position | 1,296,433 | Aug 13, 2026 |
| BlackRock, Inc. | Increased | 1,281,164 | Aug 7, 2026 |
| TUDOR INVESTMENT CORP ET AL | New Position | 818,485 | Aug 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 767,459 | Aug 12, 2026 |
| UBS Group AG | Increased | 646,238 | Aug 13, 2026 |
| BLACKROCK, INC. | Increased | 597,947 | May 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 474,346 | May 15, 2026 |
| GM ADVISORY GROUP, INC. | Increased | 434,456 | Apr 28, 2026 |
| VANGUARD FIDUCIARY TRUST CO | Increased | 416,917 | Aug 13, 2026 |
| STATE STREET CORP | Increased | 353,089 | Aug 7, 2026 |
| VANGUARD FIDUCIARY TRUST CO | New Position | 246,244 | May 8, 2026 |
| Informed Momentum Co LLC | New Position | 241,246 | Aug 13, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Jul 7, 2026