FilingPulse

GCTS insider transaction filings

GCT Semiconductor Holding, Inc. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-07-07. Screen GCTS transaction legs live →

FiledFormInsiderReported transactionsSource
2026-07-074TUDER JEFFREY — DirectorGrant/award (A): 9,259 @ $0EDGAR
2026-07-024Barker Robert — DirectorGrant/award (A): 9,259 @ $0EDGAR
2026-07-024Chun Kukjin — DirectorGrant/award (A): 9,259 @ $0EDGAR
2026-07-024Shin Hyunsoo — DirectorGrant/award (A): 9,259 @ $0EDGAR
2026-07-024Lee Kyeongho — DirectorGrant/award (A): 9,259 @ $0EDGAR
2026-07-024Chan Nelson — DirectorGrant/award (A): 9,259 @ $0EDGAR
2026-04-024Chun Kukjin — DirectorGrant/award (A): 24,122 @ $0EDGAR
2026-04-024Barker Robert — DirectorGrant/award (A): 24,122 @ $0EDGAR
2026-04-024Shin Hyunsoo — DirectorGrant/award (A): 24,122 @ $0EDGAR
2026-04-024TUDER JEFFREY — DirectorGrant/award (A): 24,122 @ $0EDGAR
2026-04-024Lee Kyeongho — DirectorGrant/award (A): 24,122 @ $0EDGAR
2026-04-024Chan Nelson — DirectorGrant/award (A): 24,122 @ $0EDGAR
2026-03-064Chun Kukjin — DirectorGift (G): 40,000 @ $0EDGAR
2026-01-054Barker Robert — DirectorGrant/award (A): 22,916 @ $0EDGAR
2026-01-054Chun Kukjin — DirectorGrant/award (A): 22,916 @ $0EDGAR
2026-01-054Shin Hyunsoo — DirectorGrant/award (A): 22,916 @ $0EDGAR
2026-01-054TUDER JEFFREY — DirectorGrant/award (A): 22,916 @ $0EDGAR
2026-01-054Lee Kyeongho — DirectorGrant/award (A): 22,916 @ $0EDGAR
2026-01-054Chan Nelson — DirectorGrant/award (A): 22,916 @ $0EDGAR
2025-11-284Shin Hyunsoo — DirectorPurchase (P): 16,725 @ $1.28EDGAR
2025-11-244Shin Hyunsoo — DirectorPurchase (P): 25,453 @ $1.28 · Purchase (P): 3,180 @ $1.28EDGAR
2025-10-034TUDER JEFFREY — DirectorGrant/award (A): 18,092 @ $0EDGAR
2025-10-024Shin Hyunsoo — DirectorGrant/award (A): 18,092 @ $0EDGAR
2025-10-024Chun Kukjin — DirectorGrant/award (A): 18,092 @ $0EDGAR
2025-10-024Barker Robert — DirectorGrant/award (A): 18,092 @ $0EDGAR
2025-10-024Lee Kyeongho — DirectorGrant/award (A): 18,092 @ $0EDGAR
2025-10-024Chan Nelson — DirectorGrant/award (A): 18,092 @ $0EDGAR
2025-09-304Schlaefer John — President, CEO & Class III Dir, DirectorOther (J): 555 @ $0EDGAR
2025-09-234Kim Jeong-Min — Chief Technology OfficerGrant/award (A): 75,000 @ $0EDGAR
2025-09-234Sum Alex — Sr. VP of Sales and MarketingGrant/award (A): 75,000 @ $0EDGAR
2025-09-234Schlaefer John — President, CEO & Class III Dir, DirectorGrant/award (A): 75,000 @ $0EDGAR
2025-09-234Cheng Edmond — Chief Financial OfficerGrant/award (A): 75,000 @ $0EDGAR
2025-09-164Shin Hyunsoo — DirectorPurchase (P): 44,067 @ $1.51EDGAR
2025-09-084Shin Hyunsoo — DirectorPurchase (P): 8,250 @ $1.26 · Purchase (P): 10,300 @ $1.30EDGAR
2025-08-194Shin Hyunsoo — DirectorPurchase (P): 121,000 @ $1.26EDGAR
2025-07-024Shin Hyunsoo — DirectorGrant/award (A): 18,456 @ $0EDGAR
2025-07-024Chun Kukjin — DirectorGrant/award (A): 18,456 @ $0EDGAR
2025-07-024Barker Robert — DirectorGrant/award (A): 18,456 @ $0EDGAR
2025-07-024TUDER JEFFREY — DirectorGrant/award (A): 18,456 @ $0EDGAR
2025-07-024Lee Kyeongho — DirectorGrant/award (A): 18,456 @ $0EDGAR
2025-07-024Chan Nelson — DirectorGrant/award (A): 18,456 @ $0EDGAR
2025-06-124Shin Hyunsoo — DirectorPurchase (P): 40,000 @ $1.20 · Purchase (P): 45,000 @ $1.16EDGAR
2025-06-064Shin Hyunsoo — DirectorPurchase (P): 80,000 @ $1.02 · Purchase (P): 58,700 @ $1.03 · Purchase (P): 21,300 @ $1.02EDGAR
2025-05-274Shin Hyunsoo — Class II Director, DirectorPurchase (P): 77,000 @ $1.04EDGAR
2025-05-214Shin Hyunsoo — Class II Director, DirectorPurchase (P): 86,000 @ $1.18EDGAR
2025-04-234TUDER JEFFREY — DirectorOther (J): 16,289 · Other (J): 20,734 (derivative) @ $0EDGAR
2025-04-144/ABarker Robert — DirectorGrant/award (A): 13,074 @ $0 · Grant/award (A): 3,735 @ $0 · Grant/award (A): 933 (derivative) @ $0 · Grant/award (A): 1,867 (derivative) @ $0EDGAR
2025-04-074/AKim Jeemee — VP of Engineering & CTOGrant/award (A): 215,286 @ $0 · Grant/award (A): 12,415 @ $0 · Grant/award (A): 3,731 (derivative) @ $0 · Grant/award (A): 59,952 (derivative) @ $0 · Grant/award (A): 18,676 (derivative) @ $0EDGAR
2025-04-024Barker Robert — DirectorGrant/award (A): 16,768 @ $0EDGAR
2025-04-024Shin Hyunsoo — DirectorGrant/award (A): 16,768 @ $0EDGAR

Recent 8-K events — GCT Semiconductor Holding, Inc.

FiledFormItems reportedSource
2026-08-108-K2.02 — Results of Operations and Financial Condition
9.01 — Financial Statements and Exhibits		EDGAR
2026-06-188-K2.02 — Results of Operations and Financial Condition
9.01 — Financial Statements and Exhibits		EDGAR
2026-06-188-K/A8.01 — Other Events
9.01 — Financial Statements and Exhibits		EDGAR
2026-05-128-K2.02 — Results of Operations and Financial Condition
9.01 — Financial Statements and Exhibits		EDGAR
2026-03-258-K2.02 — Results of Operations and Financial Condition
9.01 — Financial Statements and Exhibits		EDGAR
2026-02-258-K1.01 — Entry into a Material Definitive Agreement
9.01 — Financial Statements and Exhibits		EDGAR
2026-01-298-K8.01 — Other Events
9.01 — Financial Statements and Exhibits		EDGAR
2025-12-158-K1.01 — Entry into a Material Definitive Agreement
2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
9.01 — Financial Statements and Exhibits		EDGAR
2025-11-128-K2.02 — Results of Operations and Financial Condition
9.01 — Financial Statements and Exhibits		EDGAR
2025-09-198-K5.07 — Submission of Matters to a Vote of Security HoldersEDGAR
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