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GCTSGCT Semiconductor Holding, Inc.

Market cap
$118.64M
as of 2026-10-23
Latest close
$1.29
as of 2026-10-23
Sector
Technology
as of 2026-10-24
Industry
Semiconductors
as of 2026-10-24

Cluster

No cluster in the last 90 days under the default rule (14d · ≥2 insiders · all roles).

Form 4 historysince 2023-11-17

Dashed line = amended filing (Form 4/A)

InsiderTradedFiledTypeSharesPriceValueOwned after10b5-1 planFiling
Lee KyeonghoSep 30Oct 2A12,971$0.00$01,109,093NoForm 4
Barker RobertSep 30Oct 2A12,971$0.00$0164,681NoForm 4
Tuder JeffreySep 30Oct 2A12,971$0.00$0164,161NoForm 4
Chan NelsonSep 30Oct 2A12,971$0.00$0147,872NoForm 4
Shin HyunsooSep 30Oct 2A12,971$0.00$0827,039NoForm 4
Chun KukjinSep 30Oct 2A12,971$0.00$0111,607NoForm 4
Cheng EdmondChief Financial OfficerSep 10Sep 14A145,000$0.00$0296,000NoForm 4
Kim Jeong-MinChief Technology OfficerSep 10Sep 14A100,000$0.00$0402,701NoForm 4
Schlaefer JohnPresident, CEO & Class III DirSep 10Sep 14A150,000$0.00$0352,728NoForm 4
Sum AlexSr. VP of Sales and MarketingSep 10Sep 14A75,000$0.00$0258,743NoForm 4
Tuder JeffreyJun 30Jul 7A9,259$0.00$0151,190NoForm 4
Shin HyunsooJun 30Jul 2A9,259$0.00$0814,068NoForm 4
Lee KyeonghoJun 30Jul 2A9,259$0.00$01,096,122NoForm 4
Chan NelsonJun 30Jul 2A9,259$0.00$0134,901NoForm 4
Chun KukjinJun 30Jul 2A9,259$0.00$098,636NoForm 4
Barker RobertJun 30Jul 2A9,259$0.00$0151,710NoForm 4
Shin HyunsooMar 31Apr 2A24,122$0.00$0804,809NoForm 4
Barker RobertMar 31Apr 2A24,122$0.00$0142,451NoForm 4
Chun KukjinMar 31Apr 2A24,122$0.00$089,377NoForm 4
Chan NelsonMar 31Apr 2A24,122$0.00$0125,642NoForm 4
Lee KyeonghoMar 31Apr 2A24,122$0.00$01,086,863NoForm 4
Tuder JeffreyMar 31Apr 2A24,122$0.00$0141,931NoForm 4
Chun KukjinFeb 23Mar 6G40,000$0.00$065,255NoForm 4
Shin HyunsooDec 31, 2025Jan 5A22,916$0.00$0780,687NoForm 4
Lee KyeonghoDec 31, 2025Jan 5A22,916$0.00$01,062,741NoForm 4
Chun KukjinDec 31, 2025Jan 5A22,916$0.00$0105,255NoForm 4
Chan NelsonDec 31, 2025Jan 5A22,916$0.00$0101,520NoForm 4
Barker RobertDec 31, 2025Jan 5A22,916$0.00$0118,329NoForm 4
Tuder JeffreyDec 31, 2025Jan 5A22,916$0.00$0117,809NoForm 4
Shin HyunsooNov 25, 2025Nov 28, 2025P16,725$1.28Purchase +$21,408757,771NoForm 4
Shin HyunsooNov 21, 2025Nov 24, 2025P3,180$1.28Purchase +$4,070741,046NoForm 4
Shin HyunsooNov 20, 2025Nov 24, 2025P25,453$1.28Purchase +$32,580737,866NoForm 4
Tuder JeffreySep 30, 2025Oct 3, 2025A18,092$0.00$094,893NoForm 4
Barker RobertSep 30, 2025Oct 2, 2025A18,092$0.00$095,413NoForm 4
Chan NelsonSep 30, 2025Oct 2, 2025A18,092$0.00$078,604NoForm 4
Chun KukjinSep 30, 2025Oct 2, 2025A18,092$0.00$082,339NoForm 4
Lee KyeonghoSep 30, 2025Oct 2, 2025A18,092$0.00$01,039,825NoForm 4
Shin HyunsooSep 30, 2025Oct 2, 2025A18,092$0.00$0712,413NoForm 4
Schlaefer JohnPresident, CEO & Class III DirSep 26, 2025Sep 30, 2025J555$0.00$0202,728NoForm 4
Sum AlexSr. VP of Sales and MarketingSep 19, 2025Sep 23, 2025A75,000$0.00$0183,743NoForm 4
Cheng EdmondChief Financial OfficerSep 19, 2025Sep 23, 2025A75,000$0.00$0151,000NoForm 4
Schlaefer JohnPresident, CEO & Class III DirSep 19, 2025Sep 23, 2025A75,000$0.00$0202,173NoForm 4
Kim Jeong-MinChief Technology OfficerSep 19, 2025Sep 23, 2025A75,000$0.00$0302,701NoForm 4
Shin HyunsooSep 12, 2025Sep 16, 2025P44,067$1.51Purchase +$66,541694,321NoForm 4
Shin HyunsooSep 5, 2025Sep 8, 2025P10,300$1.30Purchase +$13,390650,254NoForm 4
Shin HyunsooSep 4, 2025Sep 8, 2025P8,250$1.26Purchase +$10,395639,954NoForm 4
Shin HyunsooAug 15, 2025Aug 19, 2025P121,000$1.26Purchase +$152,460631,704NoForm 4
Barker RobertJun 30, 2025Jul 2, 2025A18,456$0.00$077,321NoForm 4
Chan NelsonJun 30, 2025Jul 2, 2025A18,456$0.00$060,512NoForm 4
Chun KukjinJun 30, 2025Jul 2, 2025A18,456$0.00$064,247NoForm 4
Lee KyeonghoJun 30, 2025Jul 2, 2025A18,456$0.00$01,021,733NoForm 4
Shin HyunsooJun 30, 2025Jul 2, 2025A18,456$0.00$0510,704NoForm 4
Tuder JeffreyJun 30, 2025Jul 2, 2025A18,456$0.00$076,801NoForm 4
Shin HyunsooJun 10, 2025Jun 12, 2025P40,000$1.20Purchase +$48,000447,248NoForm 4
Shin HyunsooJun 10, 2025Jun 12, 2025P45,000$1.16Purchase +$52,200492,248NoForm 4
Shin HyunsooJun 5, 2025Jun 6, 2025P58,700$1.03Purchase +$60,461385,948NoForm 4
Shin HyunsooJun 5, 2025Jun 6, 2025P21,300$1.02Purchase +$21,726407,248NoForm 4
Shin HyunsooJun 4, 2025Jun 6, 2025P80,000$1.02Purchase +$81,600327,248NoForm 4
Shin HyunsooClass II DirectorMay 23, 2025May 27, 2025P77,000$1.04Purchase +$80,080247,248NoForm 4
Shin HyunsooClass II DirectorMay 20, 2025May 21, 2025P86,000$1.18Purchase +$101,480170,248NoForm 4
Tuder JeffreyMar 26, 2025Apr 23, 2025J16,289not reportednot reported58,345NoForm 4
Tuder JeffreyMar 26, 2025Apr 23, 2025J · derivative20,734$11.50$238,441not reportedNoForm 4
Barker RobertMar 26, 2024Apr 14, 20254/AA13,074$0.00$013,074NoForm 4/A
Barker RobertMar 26, 2024Apr 14, 20254/AA3,735$0.00$016,809NoForm 4/A
Barker RobertMar 26, 2024Apr 14, 20254/AA · derivative933$0.11$103933NoForm 4/A
Barker RobertMar 26, 2024Apr 14, 20254/AA · derivative1,867$0.11$2051,867NoForm 4/A
Kim JeemeeVP of Engineering & CTOMar 26, 2024Apr 7, 20254/AA215,286$0.00$0215,286NoForm 4/A
Kim JeemeeVP of Engineering & CTOMar 26, 2024Apr 7, 20254/AA12,415$0.00$0227,701NoForm 4/A
Kim JeemeeVP of Engineering & CTOMar 26, 2024Apr 7, 20254/AA · derivative3,731$0.11$4103,731NoForm 4/A
Kim JeemeeVP of Engineering & CTOMar 26, 2024Apr 7, 20254/AA · derivative59,952$0.11$6,59559,952NoForm 4/A
Kim JeemeeVP of Engineering & CTOMar 26, 2024Apr 7, 20254/AA · derivative18,676$0.11$2,05418,676NoForm 4/A
Chan NelsonMar 31, 2025Apr 2, 2025A16,768$0.00$042,056NoForm 4
Tuder JeffreyMar 31, 2025Apr 2, 2025A16,768$0.00$042,056NoForm 4
Lee KyeonghoMar 31, 2025Apr 2, 2025A16,768$0.00$01,003,277NoForm 4
Chun KukjinMar 31, 2025Apr 2, 2025A16,768$0.00$045,791NoForm 4
Shin HyunsooMar 31, 2025Apr 2, 2025A16,768$0.00$084,248NoForm 4
Barker RobertMar 31, 2025Apr 2, 2025A16,768$0.00$058,865NoForm 4
Concord Sponsor Group III LLCMar 26, 2025Mar 28, 2025J3,101,241not reportednot reported632,586NoForm 4
Concord Sponsor Group III LLCMar 26, 2025Mar 28, 2025J · derivative3,948,086$11.50$45,402,989not reportedNoForm 4
Sum AlexSr. VP of Sales and MarketingMar 26, 2024Feb 27, 20254/AA90,143$0.00$090,143NoForm 4/A
Sum AlexSr. VP of Sales and MarketingMar 26, 2024Feb 27, 20254/AA5,341$0.00$05,341NoForm 4/A
Sum AlexSr. VP of Sales and MarketingMar 26, 2024Feb 27, 20254/AA · derivative13,259$0.11$1,45813,259NoForm 4/A
Sum AlexSr. VP of Sales and MarketingMar 26, 2024Feb 27, 20254/AA · derivative13,820$0.11$1,52013,820NoForm 4/A
Sum AlexSr. VP of Sales and MarketingMar 26, 2024Feb 27, 20254/AA · derivative13,540$0.11$1,48913,540NoForm 4/A
Sum AlexSr. VP of Sales and MarketingMar 26, 2024Feb 27, 20254/AA · derivative9,338$0.11$1,0279,338NoForm 4/A
Schlaefer JohnPresident, CEO & Class III DirMar 26, 2024Feb 27, 20254/AA78,700$0.00$078,700NoForm 4/A
Schlaefer JohnPresident, CEO & Class III DirMar 26, 2024Feb 27, 20254/AA12,804$0.00$012,804NoForm 4/A
Schlaefer JohnPresident, CEO & Class III DirMar 26, 2024Feb 27, 20254/AA · derivative35,669$0.11$3,92435,669NoForm 4/A
Schlaefer JohnPresident, CEO & Class III DirMar 26, 2024Feb 27, 20254/AA · derivative28,191$0.11$3,10128,191NoForm 4/A
Schlaefer JohnPresident, CEO & Class III DirMar 26, 2024Feb 27, 20254/AA · derivative21,533$0.11$2,36921,533NoForm 4/A
Schlaefer JohnPresident, CEO & Class III DirMar 26, 2024Feb 27, 20254/AA · derivative50,425$0.11$5,54750,425NoForm 4/A
Sum AlexSr. VP of Sales and MarketingFeb 19, 2025Feb 21, 2025M13,259$0.11$1,458108,743NoForm 4
Sum AlexSr. VP of Sales and MarketingFeb 19, 2025Feb 21, 2025M · derivative13,259$0.11$1,458not reportedNoForm 4
Schlaefer JohnPresident, CEO & Class III DirJan 13, 2025Feb 21, 2025M35,669$0.11$3,924127,173NoForm 4
Schlaefer JohnPresident, CEO & Class III DirJan 13, 2025Feb 21, 2025M · derivative35,669$0.11$3,924not reportedNoForm 4
Barker RobertDec 31, 2024Jan 2, 2025A11,802$0.00$041,162NoForm 4
Chan Nelson CDec 31, 2024Jan 2, 2025A11,802$0.00$025,288NoForm 4
Chun KukjinDec 31, 2024Jan 2, 2025A11,802$0.00$028,964NoForm 4
Lee KyeonghoDec 31, 2024Jan 2, 2025A11,802$0.00$01,697,279NoForm 4
Shin HyunsooDec 31, 2024Jan 2, 2025A11,802$0.00$067,693NoForm 4
Tuder JeffreyDec 31, 2024Jan 2, 2025A11,802$0.00$025,288NoForm 4
Shin HyunsooDec 16, 2024Dec 16, 2024A37,000$2.57$95,09055,891NoForm 4
Shin HyunsooDec 13, 2024Dec 16, 2024A800$2.50$2,00018,691NoForm 4
Shin HyunsooDec 13, 2024Dec 16, 2024A200$2.50$50018,891NoForm 4
Barker RobertSep 30, 2024Nov 21, 2024A8,208$0.00$029,360NoForm 4
Chan Nelson CSep 30, 2024Nov 21, 2024A8,208$0.00$013,486NoForm 4
Chun KukjinSep 30, 2024Nov 21, 2024A8,208$0.00$017,162NoForm 4
Lee KyeonghoSep 30, 2024Nov 21, 2024A8,208$0.00$01,685,477NoForm 4
Shin HyunsooSep 30, 2024Nov 21, 2024A8,208$0.00$017,891NoForm 4
Tuder JeffreySep 30, 2024Nov 21, 2024A8,208$0.00$013,486NoForm 4
Anapass, Inc.Sep 26, 2024Sep 27, 2024P741,603$3.02Purchase +$2,239,6418,017,466NoForm 4
Anapass, Inc.Sep 26, 2024Sep 27, 2024P · derivative148,320$3.02Purchase +$447,926148,320NoForm 4
Cheng EdmondChief Financial OfficerAug 21, 2024Aug 23, 2024A76,000$0.00$076,000NoForm 4
Tuder JeffreyJun 30, 2024Jul 5, 2024A5,278$0.00$05,278NoForm 4
Barker RobertJun 30, 2024Jul 3, 2024A5,278$0.00$021,152NoForm 4
Chan Nelson CJun 30, 2024Jul 3, 2024A5,278$0.00$05,278NoForm 4
Chun KukjinJun 30, 2024Jul 3, 2024A5,278$0.00$08,954NoForm 4
Lee KyeonghoJun 30, 2024Jul 3, 2024A5,278$0.00$01,677,269NoForm 4
Shin HyunsooJun 30, 2024Jul 3, 2024A5,278$0.00$09,683NoForm 4
Anapass, Inc.Mar 26, 2024May 3, 20244/AA7,275,863$0.00$07,275,863NoForm 4/A
Anapass, Inc.Mar 26, 2024May 3, 20244/AJ · derivative937,350$11.50$10,779,525937,350NoForm 4/A
Lee KyeonghoMar 26, 2024May 3, 20244/AA867,840$0.00$0867,840NoForm 4/A
Lee KyeonghoMar 26, 2024May 3, 20244/AA93,380$0.00$093,380NoForm 4/A
Lee KyeonghoMar 26, 2024May 3, 20244/AJ · derivative800,000$11.50$9,200,000800,000NoForm 4/A
Concord Sponsor Group III LLCMar 26, 2024Mar 28, 2024C1not reportednot reported7,957,727NoForm 4
Concord Sponsor Group III LLCMar 26, 2024Mar 28, 2024J932,052not reportednot reported7,025,675NoForm 4
Concord Sponsor Group III LLCMar 26, 2024Mar 28, 2024J729,072not reportednot reported6,296,603NoForm 4
Concord Sponsor Group III LLCMar 26, 2024Mar 28, 2024J1,304,477not reportednot reported4,992,126NoForm 4
Concord Sponsor Group III LLCMar 26, 2024Mar 28, 2024C · derivative1not reportednot reportednot reportedNoForm 4
Concord Sponsor Group III LLCMar 26, 2024Mar 28, 2024A · derivative8,260,606$11.50$94,996,9698,260,606NoForm 4
Concord Sponsor Group III LLCMar 26, 2024Mar 28, 2024J · derivative2,478,182$11.50$28,499,0935,782,424NoForm 4
Concord Sponsor Group III LLCMar 26, 2024Mar 28, 2024J · derivative1,834,338$11.50$21,094,8873,948,086NoForm 4
Chun KukjinMar 26, 2024Mar 27, 2024A3,735$0.00$03,735NoForm 4
Chun KukjinMar 26, 2024Mar 27, 2024A · derivative6,536$0.11$7196,536NoForm 4
Shin HyunsooMar 26, 2024Mar 27, 2024A456$0.00$0456NoForm 4
Shin HyunsooMar 26, 2024Mar 27, 2024A3,735$0.00$03,735NoForm 4
Shin HyunsooMar 26, 2024Mar 27, 2024A · derivative6,536$0.11$7196,536NoForm 4
Yoon DavidVice President of FinanceMar 26, 2024Mar 27, 2024A30,093$0.00$030,093NoForm 4
Yoon DavidVice President of FinanceMar 26, 2024Mar 27, 2024A8,204$0.00$08,204NoForm 4
Yoon DavidVice President of FinanceMar 26, 2024Mar 27, 2024A · derivative6,536$0.11$7196,536NoForm 4
Yoon DavidVice President of FinanceMar 26, 2024Mar 27, 2024A · derivative9,431$0.11$1,0379,431NoForm 4
Yoon DavidVice President of FinanceMar 26, 2024Mar 27, 2024A · derivative13,540$0.11$1,48913,540NoForm 4
Yoon DavidVice President of FinanceMar 26, 2024Mar 27, 2024A · derivative20,543$0.11$2,26020,543NoForm 4
Yoon DavidVice President of FinanceMar 26, 2024Mar 27, 2024A · derivative18,676$0.11$2,05418,676NoForm 4
Concord Sponsor Group III LLCNov 16, 2023Nov 17, 2023C7,957,726not reportednot reported7,957,726NoForm 4
Concord Sponsor Group III LLCNov 16, 2023Nov 17, 2023C · derivative7,957,726not reportednot reported1NoForm 4
Leibowitz Lawrence ENov 16, 2023Nov 17, 2023C30,000not reportednot reported30,000NoForm 4
Leibowitz Lawrence ENov 16, 2023Nov 17, 2023C · derivative30,000not reportednot reportednot reportedNoForm 4
King Thomas C.Nov 16, 2023Nov 17, 2023C30,000not reportednot reported30,000NoForm 4
King Thomas C.Nov 16, 2023Nov 17, 2023C · derivative30,000not reportednot reportednot reportedNoForm 4
Ort PeterNov 16, 2023Nov 17, 2023C30,000not reportednot reported30,000NoForm 4
Ort PeterNov 16, 2023Nov 17, 2023C · derivative30,000not reportednot reportednot reportedNoForm 4