SEC Insider Transactions from Shin Hyunsoo.

Last updated: 2026-04-02 13:07 UTC | Total transactions: 28

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.

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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%