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GCT Semiconductor Holding, Inc. (New York Stock Exchange:GCTS)
US · Delayed Price · Currency is USD
Technology · Semiconductors
1.27-0.01 (-1.16%)
Insider Score
––Not scored
GCTS Insider Score
Insiders here have filed 10 Form 4s in the last 90 days, but all of them are share awards, grants or other non-market transactions. Those are compensation, not a decision to buy, so they are not scored.
GCTS Stock Insider Trading Activity
GCTS stock’s insider trading shows no open-market insider trades by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Barker Robert Director | Award | 12,971 | — | — | 8.5% | 164,681 | Sep 30, 2026 | — | Form 4 |
| TUDER JEFFREY Director | Award | 12,971 | — | — | 8.6% | 164,161 | Sep 30, 2026 | — | Form 4 |
| Chan Nelson Director | Award | 12,971 | — | — | 9.6% | 147,872 | Sep 30, 2026 | — | Form 4 |
| Chun Kukjin Director | Award | 12,971 | — | — | 13.2% | 111,607 | Sep 30, 2026 | — | Form 4 |
| Lee Kyeongho Director | Award | 12,971 | — | — | 1.2% | 1,109,093 | Sep 30, 2026 | — | Form 4 |
| Shin Hyunsoo Director | Award | 12,971 | — | — | 1.6% | 827,039 | Sep 30, 2026 | — | Form 4 |
| Sum Alex Other | Award | 75,000 | — | — | 40.8% | 258,743 | Sep 10, 2026 | — | Form 4 |
| Schlaefer John CEO | Award | 150,000 | — | — | 74.0% | 352,728 | Sep 10, 2026 | — | Form 4 |
| Kim Jeong-Min Other | Award | 100,000 | — | — | 33.0% | 402,701 | Sep 10, 2026 | — | Form 4 |
| Cheng Edmond CFO | Award | 145,000 | — | — | 96.0% | 296,000 | Sep 10, 2026 | — | Form 4 |
| Chun Kukjin Director | Award | 9,259 | — | — | 10.4% | 98,636 | Jun 30, 2026 | — | Form 4 |
| TUDER JEFFREY Director | Award | 9,259 | — | — | 6.5% | 151,190 | Jun 30, 2026 | — | Form 4 |
| Chan Nelson Director | Award | 9,259 | — | — | 7.4% | 134,901 | Jun 30, 2026 | — | Form 4 |
| Lee Kyeongho Director | Award | 9,259 | — | — | 0.9% | 1,096,122 | Jun 30, 2026 | — | Form 4 |
| Shin Hyunsoo Director | Award | 9,259 | — | — | 1.2% | 814,068 | Jun 30, 2026 | — | Form 4 |
| Barker Robert Director | Award | 9,259 | — | — | 6.5% | 151,710 | Jun 30, 2026 | — | Form 4 |
| Chan Nelson Director | Award | 24,122 | — | — | 23.8% | 125,642 | Mar 31, 2026 | — | Form 4 |
| Chun Kukjin Director | Award | 24,122 | — | — | 37.0% | 89,377 | Mar 31, 2026 | — | Form 4 |
| Barker Robert Director | Award | 24,122 | — | — | 20.4% | 142,451 | Mar 31, 2026 | — | Form 4 |
| Shin Hyunsoo Director | Award | 24,122 | — | — | 3.1% | 804,809 | Mar 31, 2026 | — | Form 4 |
| TUDER JEFFREY Director | Award | 24,122 | — | — | 20.5% | 141,931 | Mar 31, 2026 | — | Form 4 |
| Lee Kyeongho Director | Award | 24,122 | — | — | 2.3% | 1,086,863 | Mar 31, 2026 | — | Form 4 |
| Chun Kukjin Director | Gift | 40,000 | — | — | 38.0% | 65,255 | Feb 23, 2026 | — | Form 4 |
| Chan Nelson Director | Award | 22,916 | — | — | 29.2% | 101,520 | Dec 31, 2025 | — | Form 4 |
| Chun Kukjin Director | Award | 22,916 | — | — | 27.8% | 105,255 | Dec 31, 2025 | — | Form 4 |
| Lee Kyeongho Director | Award | 22,916 | — | — | 2.2% | 1,062,741 | Dec 31, 2025 | — | Form 4 |
| Shin Hyunsoo Director | Award | 22,916 | — | — | 3.0% | 780,687 | Dec 31, 2025 | — | Form 4 |
| Barker Robert Director | Award | 22,916 | — | — | 24.0% | 118,329 | Dec 31, 2025 | — | Form 4 |
| TUDER JEFFREY Director | Award | 22,916 | — | — | 24.1% | 117,809 | Dec 31, 2025 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Award (A) — Grant or award from the company, not a purchase
- Gift (G) — Bona fide gift
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.