Arkolith/Insider Trading/GCTS

GCTS Insider Trading

GCTS · full profile →Last filing Jun 30, 2026
Mixed · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$0
0 insiders
Net Insider Flow
$0
open market, 180d
Reporting Insiders
0
0 P/S transactions
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Build on these Form 4 transactions

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Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jun 30, 2026Tuder JeffreyDirectorGrant(A)9K—$0
Jun 30, 2026Chun KukjinDirectorGrant(A)9K—$0
Jun 30, 2026Chan NelsonDirectorGrant(A)9K—$0
Jun 30, 2026Barker RobertDirectorGrant(A)9K—$0
Jun 30, 2026Shin HyunsooDirectorGrant(A)9K—$0
Jun 30, 2026Lee KyeonghoDirectorGrant(A)9K—$0
Mar 31, 2026Lee KyeonghoDirectorGrant(A)24K—$0
Mar 31, 2026Tuder JeffreyDirectorGrant(A)24K—$0
Mar 31, 2026Shin HyunsooDirectorGrant(A)24K—$0
Mar 31, 2026Chun KukjinDirectorGrant(A)24K—$0
Mar 31, 2026Barker RobertDirectorGrant(A)24K—$0
Mar 31, 2026Chan NelsonDirectorGrant(A)24K—$0
Feb 23, 2026Chun KukjinDirectorGift(G)40K—$0
Dec 31, 2025Shin HyunsooDirectorGrant(A)23K—$0
Dec 31, 2025Lee KyeonghoDirectorGrant(A)23K—$0
Dec 31, 2025Chun KukjinDirectorGrant(A)23K—$0
Dec 31, 2025Chan NelsonDirectorGrant(A)23K—$0
Dec 31, 2025Barker RobertDirectorGrant(A)23K—$0
Dec 31, 2025Tuder JeffreyDirectorGrant(A)23K—$0
Nov 25, 2025Shin HyunsooDirectorBuy(P)17K$1.28$21K
Nov 21, 2025Shin HyunsooDirectorBuy(P)3K$1.28$4K
Nov 20, 2025Shin HyunsooDirectorBuy(P)25K$1.28$33K
Sep 30, 2025Barker RobertDirectorGrant(A)18K—$0
Sep 30, 2025Chan NelsonDirectorGrant(A)18K—$0
Sep 30, 2025Chun KukjinDirectorGrant(A)18K—$0
Sep 30, 2025Lee KyeonghoDirectorGrant(A)18K—$0
Sep 30, 2025Shin HyunsooDirectorGrant(A)18K—$0
Sep 30, 2025Tuder JeffreyDirectorGrant(A)18K—$0
Sep 26, 2025Schlaefer JohnPresident, CEO & Class III Dir, DirectorOther(J)555—$0
Sep 19, 2025Sum AlexSr. VP of Sales and MarketingGrant(A)75K—$0
Sep 19, 2025Cheng EdmondChief Financial OfficerGrant(A)75K—$0
Sep 19, 2025Schlaefer JohnPresident, CEO & Class III Dir, DirectorGrant(A)75K—$0
Sep 19, 2025Kim Jeong-MinChief Technology OfficerGrant(A)75K—$0
Sep 12, 2025Shin HyunsooDirectorBuy(P)44K$1.51$67K
Sep 5, 2025Shin HyunsooDirectorBuy(P)10K$1.30$13K
Sep 4, 2025Shin HyunsooDirectorBuy(P)8K$1.26$10K
Aug 15, 2025Shin HyunsooDirectorBuy(P)121K$1.26$152K
Jun 30, 2025Barker RobertDirectorGrant(A)18K—$0
Jun 30, 2025Chan NelsonDirectorGrant(A)18K—$0
Jun 30, 2025Chun KukjinDirectorGrant(A)18K—$0
Jun 30, 2025Lee KyeonghoDirectorGrant(A)18K—$0
Jun 30, 2025Shin HyunsooDirectorGrant(A)18K—$0
Jun 30, 2025Tuder JeffreyDirectorGrant(A)18K—$0
Jun 10, 2025Shin HyunsooDirectorBuy(P)40K$1.20$48K
Jun 10, 2025Shin HyunsooDirectorBuy(P)45K$1.16$52K
Jun 5, 2025Shin HyunsooDirectorBuy(P)59K$1.03$60K
Jun 5, 2025Shin HyunsooDirectorBuy(P)21K$1.02$22K
Jun 4, 2025Shin HyunsooDirectorBuy(P)80K$1.02$82K
May 23, 2025Shin HyunsooClass II Director, DirectorBuy(P)77K$1.04$80K
May 20, 2025Shin HyunsooClass II Director, DirectorBuy(P)86K$1.18$101K
Mar 31, 2025Chan NelsonDirectorGrant(A)17K—$0
Mar 31, 2025Tuder JeffreyDirectorGrant(A)17K—$0
Mar 31, 2025Lee KyeonghoDirectorGrant(A)17K—$0
Mar 31, 2025Chun KukjinDirectorGrant(A)17K—$0
Mar 31, 2025Shin HyunsooDirectorGrant(A)17K—$0
Mar 31, 2025Barker RobertDirectorGrant(A)17K—$0
Mar 26, 2025Tuder JeffreyDirectorOther(J)16K——
Mar 26, 2025Tuder JeffreyDirectorOther(J)21K—$0
Mar 26, 2025Concord Sponsor Group III LLC10% OwnerOther(J)3.1M——
Mar 26, 2025Concord Sponsor Group III LLC10% OwnerOther(J)3.9M—$0
Feb 19, 2025Sum AlexSr. VP of Sales and MarketingOption exercise(M)13K$0.11$1K
Feb 19, 2025Sum AlexSr. VP of Sales and MarketingOption exercise(M)13K—$0
Jan 13, 2025Schlaefer JohnPresident, CEO & Class III Dir, DirectorOption exercise(M)36K$0.11$4K
Jan 13, 2025Schlaefer JohnPresident, CEO & Class III Dir, DirectorOption exercise(M)36K—$0
Dec 31, 2024Barker RobertDirectorGrant(A)12K—$0
Dec 31, 2024Chan Nelson CDirectorGrant(A)12K—$0
Dec 31, 2024Chun KukjinDirectorGrant(A)12K—$0
Dec 31, 2024Lee KyeonghoDirectorGrant(A)12K—$0
Dec 31, 2024Shin HyunsooDirectorGrant(A)12K—$0
Dec 31, 2024Tuder JeffreyDirectorGrant(A)12K—$0
Dec 16, 2024Shin HyunsooDirectorGrant(A)37K$2.57$95K
Dec 13, 2024Shin HyunsooDirectorGrant(A)800$2.50$2K
Dec 13, 2024Shin HyunsooDirectorGrant(A)200$2.50$500
Sep 30, 2024Barker RobertDirectorGrant(A)8K—$0
Sep 30, 2024Chan Nelson CDirectorGrant(A)8K—$0
Sep 30, 2024Chun KukjinDirectorGrant(A)8K—$0
Sep 30, 2024Lee KyeonghoDirectorGrant(A)8K—$0
Sep 30, 2024Shin HyunsooDirectorGrant(A)8K—$0
Sep 30, 2024Tuder JeffreyDirectorGrant(A)8K—$0
Sep 26, 2024Anapass, Inc.10% OwnerBuy(P)742K$3.02$2.2M
Sep 26, 2024Anapass, Inc.10% OwnerBuy(P)148K—$0
Aug 21, 2024Cheng EdmondChief Financial OfficerGrant(A)76K—$0
Jun 30, 2024Barker RobertDirectorGrant(A)5K—$0
Jun 30, 2024Chan Nelson CDirectorGrant(A)5K—$0
Jun 30, 2024Chun KukjinDirectorGrant(A)5K—$0
Jun 30, 2024Lee KyeonghoDirectorGrant(A)5K—$0
Jun 30, 2024Shin HyunsooDirectorGrant(A)5K—$0
Jun 30, 2024Tuder JeffreyDirectorGrant(A)5K—$0
Mar 26, 2024Concord Sponsor Group III LLC10% OwnerOther(J)2.5M—$0
Mar 26, 2024Concord Sponsor Group III LLC10% OwnerGrant(A)8.3M—$0
Mar 26, 2024Concord Sponsor Group III LLC10% OwnerConversion(C)1——
Mar 26, 2024Concord Sponsor Group III LLC10% OwnerOther(J)1.8M—$0
Mar 26, 2024Concord Sponsor Group III LLC10% OwnerOther(J)1.3M——
Mar 26, 2024Concord Sponsor Group III LLC10% OwnerConversion(C)1——
Mar 26, 2024Concord Sponsor Group III LLC10% OwnerOther(J)729K——
Mar 26, 2024Concord Sponsor Group III LLC10% OwnerOther(J)932K——
Mar 26, 2024Yoon DavidVice President of FinanceGrant(A)9K—$0
Mar 26, 2024Yoon DavidVice President of FinanceGrant(A)7K—$0
Mar 26, 2024Yoon DavidVice President of FinanceGrant(A)19K—$0
Mar 26, 2024Yoon DavidVice President of FinanceGrant(A)14K—$0

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-11. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).