Schlaefer John (CIK 1542775) reported 5 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2025-09-30). Recent activity: Buy GCTS (555 shares), Buy GCTS (75,000 shares), Buy GCTS (78,700 shares), Buy GCTS (12,804 shares), Buy GCTS (35,669 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-09-30 | GCT Semiconductor Holding, Inc. (GCTS) | President, CEO & Class III Dir | Buy | 555 | $0 |
| 2025-09-23 | GCT Semiconductor Holding, Inc. (GCTS) | President, CEO & Class III Dir | Buy | 75,000 | $0 |
| 2025-02-27 | GCT Semiconductor Holding, Inc. (GCTS) | President, CEO & Class III Dir | Buy | 78,700 | $0 |
| 2025-02-27 | GCT Semiconductor Holding, Inc. (GCTS) | President, CEO & Class III Dir | Buy | 12,804 | $0 |
| 2025-02-21 | GCT Semiconductor Holding, Inc. (GCTS) | President, CEO & Class III Dir | Buy | 35,669 | $3,924 |
Source: SEC Form 4 filings · as of 2025-09-30