// company-profile
GCT Semiconductor Holding, Inc.
GCTSExchangeNYSESectorSemiconductors & Related DevicesInc.DEFilings90Insiders16
// api This GCT Semiconductor Holding, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, GCT Semiconductor Holding, Inc. insiders bought $0 across 6 transactions with no open-market sales.
- Most active insider: Shin Hyunsoo with 1 transaction totaling $0.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of GCT Semiconductor Holding, Inc. as of 2026-03-31
Total reported AUM
$4.7M
QoQ change
+20.2%
Reporting period
2026-03-31
#1
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$2.0M
1.7M shares
#2
BlackRock, Inc.
CIK 2012383
$557,328
489K shares
#3
GM Advisory Group, LLC
CIK 1598304
$495,280
434K shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Mar 31, 2026 | Shin Hyunsoo | GCTS | Award | 24,122 | $0.00 | $0K |
| Mar 31, 2026 | Lee Kyeongho | GCTS | Award | 24,122 | $0.00 | $0K |
| Mar 31, 2026 | Barker Robert | GCTS | Award | 24,122 | $0.00 | $0K |
| Mar 31, 2026 | TUDER JEFFREY | GCTS | Award | 24,122 | $0.00 | $0K |
| Mar 31, 2026 | CHAN NELSON C | GCTS | Award | 24,122 | $0.00 | $0K |
45 more transactions hidden
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