GCTS insider buying
1 cluster buyGCT Semiconductor Holding, Inc. · Technology
When two or more insiders at GCT Semiconductor Holding, Inc. buy GCTS on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in GCTS plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- May 20 – Nov 25, 2025Detected Nov 25, 20252 insidersTotal bought$746.4KMarket cap$207.7M
All notable open-market buys in GCTS
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Nov 25, 2025 | Shin Hyunsoocluster Director, Class II Director | 16,725 | $1.28 | $21.4K | SEC ↗ |
| Nov 21, 2025 | Shin Hyunsoocluster Director, Class II Director | 3,180 | $1.28 | $4.1K | SEC ↗ |
| Nov 20, 2025 | Shin Hyunsoocluster Director, Class II Director | 25,453 | $1.28 | $32.6K | SEC ↗ |
| Sep 12, 2025 | Shin Hyunsoocluster Director, Class II Director | 44,067 | $1.51 | $66.5K | SEC ↗ |
| Sep 5, 2025 | Shin Hyunsoocluster Director, Class II Director | 10,300 | $1.30 | $13.4K | SEC ↗ |
| Sep 4, 2025 | Shin Hyunsoocluster Director, Class II Director | 8,250 | $1.26 | $10.4K | SEC ↗ |
| Aug 15, 2025 | Shin Hyunsoocluster Director, Class II Director | 121,000 | $1.26 | $152.5K | SEC ↗ |
| Jun 10, 2025 | Shin Hyunsoocluster Director, Class II Director | 45,000 | $1.16 | $52.2K | SEC ↗ |
| Jun 10, 2025 | Shin Hyunsoocluster Director, Class II Director | 40,000 | $1.20 | $48.0K | SEC ↗ |
| Jun 5, 2025 | Shin Hyunsoocluster Director, Class II Director | 58,700 | $1.03 | $60.5K | SEC ↗ |
| Jun 5, 2025 | Shin Hyunsoocluster Director, Class II Director | 21,300 | $1.02 | $21.7K | SEC ↗ |
| Jun 4, 2025 | Shin Hyunsoocluster Director, Class II Director | 80,000 | $1.02 | $81.6K | SEC ↗ |
| May 23, 2025 | Shin Hyunsoocluster Director, Class II Director | 77,000 | $1.04 | $80.1K | SEC ↗ |
| May 20, 2025 | Shin Hyunsoocluster Director, Class II Director | 86,000 | $1.18 | $101.5K | SEC ↗ |
| Sep 26, 2024 | 10% Owner | 741,603 | $3.02 | $2.2M | SEC ↗ |
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GCTS insider buying — FAQ
- Are insiders buying GCTS stock?
- Yes — 3 distinct insiders have bought GCTS (GCT Semiconductor Holding, Inc.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Nov 28, 2025.
- How much GCTS stock have insiders bought?
- Insiders have bought a combined $3.0M of GCTS across 15 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in GCTS?
- A cluster buy is two or more distinct GCT Semiconductor Holding, Inc. insiders — officers, directors, or 10% owners — each buying GCTS on the open market within a rolling window. GCTS has 1 detected cluster buy to date.
- Where does this GCTS insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in GCTS
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy GCTS within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding GCTS.