GCTS's three largest insider shareholders as of April 22, 2026 are Inc. Anapass, (TenPercentOwner, 8.02Mn shares), Sponsor Group Iii Llc Concord (TenPercentOwner, 7.96Mn shares), Kyeongho Lee (Director, 1.09Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Inc. Anapass, | - | 8,017,466 | 0 | 27 Sep, 2024 |
| Sponsor Group Iii Llc Concord | - | 7,957,726 | 0 | 17 Nov, 2023 |
| Kyeongho Lee | - | 1,086,863 | 0 | 02 Apr, 2026 |
| Hyunsoo Shin | - | 804,809 | 0 | 02 Apr, 2026 |
| Sponsor Group Iii Llc Concord | - | 632,586 | 0 | 28 Mar, 2025 |
| Jeong-Min Kim | Chief Technology Officer | 302,701 | 0 | 22 Sep, 2025 |
| John Schlaefer | President, Ceo Class Iii Dir | 202,728 | 0 | 30 Sep, 2025 |
| Alex Sum | Sr. Vp Of Sales And Marketing | 183,743 | 0 | 22 Sep, 2025 |
| Edmond Cheng | Chief Financial Officer | 151,000 | 0 | 22 Sep, 2025 |
| Robert Barker | - | 142,451 | 0 | 02 Apr, 2026 |
| Jeffrey Tuder | - | 141,931 | 0 | 02 Apr, 2026 |
| Nelson Chan | - | 125,642 | 0 | 02 Apr, 2026 |
| Kyeongho Lee | - | 93,380 | 0 | 03 May, 2024 |
| Kukjin Chun | - | 89,377 | 0 | 02 Apr, 2026 |
| Edmond Cheng | Chief Financial Officer | 76,000 | 0 | 23 Aug, 2024 |
| Peter Ort | - | 30,000 | 0 | 17 Nov, 2023 |
| David Yoon | Vice President Of Finance | 8,204 | 0 | 27 Mar, 2024 |
| Hyunsoo Shin | - | 3,735 | 0 | 27 Mar, 2024 |
| Kukjin Chun | - | 3,735 | 0 | 27 Mar, 2024 |
| Robert Barker | - | 3,735 | 0 | 27 Mar, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 31 Mar, 2026 | Jeffrey Tuder | Common Stock | A | 24,122 | $0.00 | 141,931 | D | A |
| 31 Mar, 2026 | Hyunsoo Shin | Common Stock | A | 24,122 | $0.00 | 804,809 | D | A |
| 31 Mar, 2026 | Nelson Chan | Common Stock | A | 24,122 | $0.00 | 125,642 | D | A |
| 31 Mar, 2026 | Kyeongho Lee | Common Stock | A | 24,122 | $0.00 | 1,086,863 | D | A |
| 31 Mar, 2026 | Kukjin Chun | Common Stock | A | 24,122 | $0.00 | 89,377 | D | A |
| 31 Mar, 2026 | Robert Barker | Common Stock | A | 24,122 | $0.00 | 142,451 | D | A |
| 23 Feb, 2026 | Kukjin Chun | Common Stock | D | 40,000 | $0.00 | 65,255 | D | G |
| 31 Dec, 2025 | Jeffrey Tuder | Common Stock | A | 22,916 | $0.00 | 117,809 | D | A |
| 31 Dec, 2025 | Kyeongho Lee | Common Stock | A | 22,916 | $0.00 | 1,062,741 | D | A |
| 31 Dec, 2025 | Kukjin Chun | Common Stock | A | 22,916 | $0.00 | 105,255 | D | A |
| 31 Dec, 2025 | Hyunsoo Shin | Common Stock | A | 22,916 | $0.00 | 780,687 | D | A |
| 31 Dec, 2025 | Robert Barker | Common Stock | A | 22,916 | $0.00 | 118,329 | D | A |
| 31 Dec, 2025 | Nelson Chan | Common Stock | A | 22,916 | $0.00 | 101,520 | D | A |
| 25 Nov, 2025 | Hyunsoo Shin | Common Stock | A | 16,725 | $1.28 | 757,771 | D | P |
| 20 Nov, 2025 | Hyunsoo Shin | Common Stock | A | 25,453 | $1.28 | 737,866 | D | P |
| 21 Nov, 2025 | Hyunsoo Shin | Common Stock | A | 3,180 | $1.28 | 741,046 | D | P |
| 30 Sep, 2025 | Jeffrey Tuder | Common Stock | A | 18,092 | $0.00 | 94,893 | D | A |
| 30 Sep, 2025 | Kyeongho Lee | Common Stock | A | 18,092 | $0.00 | 1,039,825 | D | A |
| 30 Sep, 2025 | Robert Barker | Common Stock | A | 18,092 | $0.00 | 95,413 | D | A |
| 30 Sep, 2025 | Hyunsoo Shin | Common Stock | A | 18,092 | $0.00 | 712,413 | D | A |