Profile
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- GCT Semiconductor Holding, Inc.
Updated Jul 16, 2026
Shin Hyunsoo has filed 1 SEC Form 4 filing across 1 company in the last 90 days — buying. Lifetime open-market purchases: $243K. Historical track record: 4/5 stars across 4 tracked purchases.
| Role | Insider |
|---|---|
| Notability | 20/100 |
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★★★☆ (4/5) |
|---|---|
| Total purchases tracked | 4 |
| Purchases with forward-return data | 4 |
| 30-day win rate | 7500% |
| 90-day win rate | 7500% |
| Avg 5-day return | +742.07% |
| Avg 30-day return | +1493.84% |
| Avg 90-day return | +528.22% |
| Best 30-day return | +2362.20% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-02 | GCTS | GCT Semiconductor Holding, Inc. | A — Grant or award | 9.3K | $0.00 | |
| 2026-04-02 | GCTS | GCT Semiconductor Holding, Inc. | A — Grant or award | 24.1K | $0.00 | |
| 2026-01-05 | GCTS | GCT Semiconductor Holding, Inc. | A — Grant or award | 22.9K | $0.00 | |
| 2025-09-30 | GCTS | GCT Semiconductor Holding, Inc. | A — Grant or award | 18.1K | $0.00 | |
| 2025-09-12 | GCTS | GCT Semiconductor Holding, Inc. | P — Open-market purchase | 44.1K | $1.51 | $67K |
| 2025-09-04 | GCTS | GCT Semiconductor Holding, Inc. | P — Open-market purchase | 10.3K | $1.30 | $13K |
| 2025-09-04 | GCTS | GCT Semiconductor Holding, Inc. | P — Open-market purchase | 8.2K | $1.26 | $10K |
| 2025-08-15 | GCTS | GCT Semiconductor Holding, Inc. | P — Open-market purchase | 121.0K | $1.26 | $152K |
| 2025-06-30 | GCTS | GCT Semiconductor Holding, Inc. | A — Grant or award | 18.5K | $0.00 | |
| 2024-12-16 | GCTS | GCT Semiconductor Holding, Inc. | A — Grant or award | 37.0K | $2.57 | $95K |
| 2024-12-16 | GCTS | GCT Semiconductor Holding, Inc. | A — Grant or award | 200 | $2.50 | $500 |
| 2024-12-16 | GCTS | GCT Semiconductor Holding, Inc. | A — Grant or award | 800 | $2.50 | $2K |
| 2024-11-21 | GCTS | GCT Semiconductor Holding, Inc. | A — Grant or award | 8.2K | $0.00 |
Shin Hyunsoo is a corporate insider — currently tracked as Insider of GCT Semiconductor Holding, Inc. (GCTS). InsiderAlpha tracks every SEC Form 4 filing in real time.
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 4 open-market purchases ($243K) and 0 open-market sales () across all tracked filings.
Across 4 tracked purchases, Shin Hyunsoo averaged +1493.8% avg 30-day return with a 7500% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Shin Hyunsoo profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.