# GCT Semiconductor Holding, Inc. (GCTS) insider trading, Q3 2026

Canonical: https://sec-api.dev/insider-trading/gcts

> 10 non-derivative transactions: 0 purchases, 0 sales. CIK 1851961.

| Date | Insider | Relationship | Code | Shares | Price | Owned after | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2026-09-10 | Cheng Edmond | Officer | A | 145000.0 | 0.0 | 296000.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826003523/0000929638-26-003523-index.htm |
| 2026-09-10 | Kim Jeong-Min | Officer | A | 100000.0 | 0.0 | 402701.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826003524/0000929638-26-003524-index.htm |
| 2026-09-10 | Schlaefer John | Director, Officer | A | 150000.0 | 0.0 | 352728.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826003525/0000929638-26-003525-index.htm |
| 2026-09-10 | Sum Alex | Officer | A | 75000.0 | 0.0 | 258743.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826003526/0000929638-26-003526-index.htm |
| 2026-06-30 | TUDER JEFFREY | Director, Other | A | 9259.0 | 0.0 | 151190.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826002547/0000929638-26-002547-index.htm |
| 2026-06-30 | Shin Hyunsoo | Director, Other | A | 9259.0 | 0.0 | 814068.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826002491/0000929638-26-002491-index.htm |
| 2026-06-30 | Lee Kyeongho | Director, Other | A | 9259.0 | 0.0 | 1096122.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826002492/0000929638-26-002492-index.htm |
| 2026-06-30 | Chan Nelson | Director, Other | A | 9259.0 | 0.0 | 134901.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826002493/0000929638-26-002493-index.htm |
| 2026-06-30 | Chun Kukjin | Director, Other | A | 9259.0 | 0.0 | 98636.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826002494/0000929638-26-002494-index.htm |
| 2026-06-30 | Barker Robert | Director, Other | A | 9259.0 | 0.0 | 151710.0 | https://www.sec.gov/Archives/edgar/data/1851961/000092963826002495/0000929638-26-002495-index.htm |

Source: https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets

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