Shin Hyunsoo made 14 open market purchases of GCT Semiconductor Holding, Inc. ($GCTS) shares over the last year, totaling about $746 thousand. His most recent buy was on November 25, 2025. These purchases rank him 663rd among nearly 5,000 insiders, who averaged 1.5 million dollars per buyer across 3.3 transactions. He reported no open market sales in the period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 31, 2026 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 24122 | $0.00 | 804,809.0000 | 57,099,558 | 3.09% | 0.04% |
| Dec. 31, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 22916 | $0.00 | 780,687.0000 | 57,099,558 | 3.02% | 0.04% |
| Nov. 25, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 16725 | $1.28 | 757,771.0000 | 57,099,558 | 2.26% | 0.03% |
| Nov. 21, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 3180 | $1.28 | 741,046.0000 | 57,099,558 | 0.43% | 0.01% |
| Nov. 20, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 25453 | $1.28 | 737,866.0000 | 57,099,558 | 3.57% | 0.04% |
| Sept. 30, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 18092 | $0.00 | 712,413.0000 | 48,246,480 | 2.61% | 0.04% |
| Sept. 12, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 44067 | $1.51 | 694,321.0000 | 48,246,480 | 6.78% | 0.09% |
| Sept. 5, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 10300 | $1.30 | 650,254.0000 | 48,246,480 | 1.61% | 0.02% |
| Sept. 4, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 8250 | $1.26 | 639,954.0000 | 48,246,480 | 1.31% | 0.02% |
| Aug. 15, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 121000 | $1.26 | 631,704.0000 | 48,246,480 | 23.69% | 0.25% |
| June 30, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 18456 | $0.00 | 510,704.0000 | 48,246,480 | 3.75% | 0.04% |
| June 10, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 40000 | $1.20 | 447,248.0000 | 48,246,480 | 9.82% | 0.08% |
| June 10, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 45000 | $1.16 | 492,248.0000 | 48,246,480 | 10.06% | 0.09% |
| June 5, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 21300 | $1.02 | 407,248.0000 | 48,246,480 | 5.52% | 0.04% |
| June 4, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 80000 | $1.02 | 327,248.0000 | 48,246,480 | 32.36% | 0.17% |
| June 5, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | P | Common Stock | 58700 | $1.03 | 385,948.0000 | 48,246,480 | 17.94% | 0.12% |
| May 23, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Class II Director | P | Common Stock | 77000 | $1.04 | 247,248.0000 | 48,246,480 | 45.23% | 0.16% |
| May 20, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Class II Director | P | Common Stock | 86000 | $1.18 | 170,248.0000 | 48,246,480 | 102.08% | 0.18% |
| March 31, 2025 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 16768 | $0.00 | 84,248.0000 | 48,246,480 | 24.85% | 0.03% |
| Dec. 31, 2024 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 11802 | $0.00 | 67,693.0000 | 0 | 21.12% | 0.00% |
| Dec. 13, 2024 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 800 | $2.50 | 18,691.0000 | 0 | 4.47% | 0.00% |
| Dec. 16, 2024 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 37000 | $2.57 | 55,891.0000 | 0 | 195.86% | 0.00% |
| Dec. 13, 2024 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 200 | $2.50 | 18,891.0000 | 0 | 1.07% | 0.00% |
| Sept. 30, 2024 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 8208 | $0.00 | 17,891.0000 | 0 | 84.77% | 0.00% |
| June 30, 2024 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock | 5278 | $0.00 | 9,683.0000 | 0 | 119.82% | 0.00% |
| March 26, 2024 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Stock Option (Right to Buy) | 6536 | $0.00 | 6,536.0000 | 0 | 9999.99% | 0.00% |
| March 26, 2024 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock, par value $0.0001 per share | 3735 | $0.00 | 3,735.0000 | 0 | 9999.99% | 0.00% |
| March 26, 2024 | GCT Semiconductor Holding, Inc. | $GCTS | Shin Hyunsoo | Not found | A | Common Stock, par value $0.0001 per share | 456 | $0.00 | 456.0000 | 0 | 9999.99% | 0.00% |