CIK 0001851961 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company
GCT Semiconductor Holding, Inc.
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- GCTS
- Exchange
- NYSE
- Industry
- Semiconductors & Related Devices
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 862171699
- Phone
- 408-434-6040
- Business address
- 2290 NORTH 1ST STREET, SUITE 201, SAN JOSE, CA, 95131
- Former names
- Concord Acquisition Corp III
Securities
- GCTS GCT Semiconductor Holding, Inc. Common Stock NYSE
- GCTS-WT Warrants NYSE
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $0
- in 0 filings
Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Reading 6 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2025-09-19 | Schlaefer John President, CEO & Class III Dir | Grant or award | +75,000 | 202,173 | ||
| 2025-09-19 | Cheng Edmond Chief Financial Officer | Grant or award | +75,000 | 151,000 | ||
| 2025-09-19 | Sum Alex Sr. VP of Sales and Marketing | Grant or award | +75,000 | 183,743 | ||
| 2025-09-12 | Shin Hyunsoo Director | Purchase | +44,067 | $1.51 | $67K | 694,321 |
| 2025-09-05 | Shin Hyunsoo Director | Purchase | +10,300 | $1.30 | $13K | 650,254 |
| 2025-09-04 | Shin Hyunsoo Director | Purchase | +8,250 | $1.26 | $10K | 639,954 |
| 2025-08-15 | Shin Hyunsoo Director | Purchase | +121,000 | $1.26 | $152K | 631,704 |
| 2025-06-30 | TUDER JEFFREY Director | Grant or award | +18,456 | 76,801 | ||
| 2025-06-30 | Shin Hyunsoo Director | Grant or award | +18,456 | 510,704 | ||
| 2025-06-30 | Lee Kyeongho Director | Grant or award | +18,456 | 1,021,733 | ||
| 2025-06-30 | Chun Kukjin Director | Grant or award | +18,456 | 64,247 | ||
| 2025-06-30 | Chan Nelson Director | Grant or award | +18,456 | 60,512 | ||
| 2025-06-30 | Barker Robert Director | Grant or award | +18,456 | 77,321 | ||
| 2025-06-10 | Shin Hyunsoo Director | Purchase | +40,000 | $1.20 | $48K | 447,248 |
| 2025-06-10 | Shin Hyunsoo Director | Purchase | +45,000 | $1.16 | $52K | 492,248 |
| 2025-06-05 | Shin Hyunsoo Director | Purchase | +58,700 | $1.03 | $60K | 385,948 |
| 2025-06-05 | Shin Hyunsoo Director | Purchase | +21,300 | $1.02 | $22K | 407,248 |
| 2025-06-04 | Shin Hyunsoo Director | Purchase | +80,000 | $1.02 | $82K | 327,248 |
| 2025-05-23 | Shin Hyunsoo Class II Director | Purchase | +77,000 | $1.04 | $80K | 247,248 |
| 2025-05-20 | Shin Hyunsoo Class II Director | Purchase | +86,000 | $1.18 | $101K | 170,248 |
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