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Company profile

GCT Semiconductor Holding, Inc. insider acquisitions

Company CIK 0001851961 · Reported insider acquisitions and filing context.

Company filings at SEC ↗
GCTS · NYSEGCTS-WT · NYSE

These are company listings. A transaction is linked to a particular security only when the filing provides enough information.

Company activity summary

By transaction date, as of October 23, 2026.

7 days30 days90 daysOverlapping periods · securities and currencies kept separate
30-day company acquisitions grouped by security, category, original code, and currency.
Type / codeReported securityTransactionsKnown purchase valueMissing amounts
Stock awardCode ACommon StockNon-derivative · Currency not specified6Not applicable0

Known purchase value sums available amounts for non-derivative purchases only. Missing amounts are excluded. “Currency not specified” does not establish that the amounts share a currency. These summaries use all matching loaded records, while the timeline below covers only the current page.

Transaction timeline

Who reported an acquisition, and when the transaction occurred.

Reported acquisitions by transaction dateEach row is a reporting owner. Select a marker to open its transaction details. Jointly reported transactions appear for each associated reporting owner, without dividing quantities or amounts.Lee KyeonghoLee KyeonghoBarker RobertBarker RobertTUDER JEFFREYTUDER JEFFREYChan NelsonChan NelsonChun KukjinChun KukjinShin HyunsooShin HyunsooLee Kyeongho · September 30, 2026 · Stock award · Common StockBarker Robert · September 30, 2026 · Stock award · Common StockTUDER JEFFREY · September 30, 2026 · Stock award · Common StockChan Nelson · September 30, 2026 · Stock award · Common StockChun Kukjin · September 30, 2026 · Stock award · Common StockShin Hyunsoo · September 30, 2026 · Stock award · Common StockTUDER JEFFREY · December 31, 2025 · Stock award · Common StockBarker Robert · December 31, 2025 · Stock award · Common StockChan Nelson · December 31, 2025 · Stock award · Common StockChun Kukjin · December 31, 2025 · Stock award · Common StockLee Kyeongho · December 31, 2025 · Stock award · Common StockShin Hyunsoo · December 31, 2025 · Stock award · Common StockShin Hyunsoo · November 25, 2025 · Purchase · Common StockShin Hyunsoo · November 21, 2025 · Purchase · Common StockShin Hyunsoo · November 20, 2025 · Purchase · Common StockNov 20, 2025Sep 30, 2026
PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

15 dated transactions · 6 of 6 reporting owners shown. Select one owner to focus the chart.

View timeline as a table
Transaction dateCompany / securityReporting ownersAcquisition type
Sep 30, 2026GCT Semiconductor Holding, Inc.Common StockLee KyeonghoStock award
Sep 30, 2026GCT Semiconductor Holding, Inc.Common StockBarker RobertStock award
Sep 30, 2026GCT Semiconductor Holding, Inc.Common StockTUDER JEFFREYStock award
Sep 30, 2026GCT Semiconductor Holding, Inc.Common StockChan NelsonStock award
Sep 30, 2026GCT Semiconductor Holding, Inc.Common StockChun KukjinStock award
Sep 30, 2026GCT Semiconductor Holding, Inc.Common StockShin HyunsooStock award
Dec 31, 2025GCT Semiconductor Holding, Inc.Common StockTUDER JEFFREYStock award
Dec 31, 2025GCT Semiconductor Holding, Inc.Common StockBarker RobertStock award
Dec 31, 2025GCT Semiconductor Holding, Inc.Common StockChan NelsonStock award
Dec 31, 2025GCT Semiconductor Holding, Inc.Common StockChun KukjinStock award
Dec 31, 2025GCT Semiconductor Holding, Inc.Common StockLee KyeonghoStock award
Dec 31, 2025GCT Semiconductor Holding, Inc.Common StockShin HyunsooStock award
Nov 25, 2025GCT Semiconductor Holding, Inc.Common StockShin HyunsooPurchase
Nov 21, 2025GCT Semiconductor Holding, Inc.Common StockShin HyunsooPurchase
Nov 20, 2025GCT Semiconductor Holding, Inc.Common StockShin HyunsooPurchase

Only transactions on this page are shown. Date windows end on the latest transaction date in this sample. Joint filings may appear on more than one row. Sales are not included. Share-price charts use a separate data source.

Share price & reported acquisitions

Daily closing prices from a separate source. The date window above also filters prices; reporting-owner and transaction-type selections filter the markers.

Choose a company listing

Choose a current company listing to view its price history.

Currency not specified. A marker uses that day's closing price, not the reported transaction price. No price is substituted for a missing trading day.

Reported acquisitions

Filing-date filters apply to the list and timeline. The summary above uses transaction dates.

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Reported insider acquisitions, ordered by filing date, newest first. Currency is shown only when reported.
Filed / transactedReporting ownersType / securityQuantityPrice / reference valueDetails
Trade:
Lee KyeonghoDirector · Chairman & Class III Director
Stock awardCommon StockNon-derivative security · Code A12,9710Value: 0Currency not specifiedView ↗
Trade:
Barker RobertDirector · Class II Director
Stock awardCommon StockNon-derivative security · Code A12,9710Value: 0Currency not specifiedView ↗
Trade:
TUDER JEFFREYDirector · Class III Director
Stock awardCommon StockNon-derivative security · Code A12,9710Value: 0Currency not specifiedView ↗
Trade:
Chan NelsonDirector · Class I Director
Stock awardCommon StockNon-derivative security · Code A12,9710Value: 0Currency not specifiedView ↗
Trade:
Chun KukjinDirector · Class I Director
Stock awardCommon StockNon-derivative security · Code A12,9710Value: 0Currency not specifiedView ↗
Trade:
Shin HyunsooDirector · Class II Director
Stock awardCommon StockNon-derivative security · Code A12,9710Value: 0Currency not specifiedView ↗
Trade:
TUDER JEFFREYDirector · Class III Director
Stock awardCommon StockNon-derivative security · Code A22,9160Value: 0Currency not specifiedView ↗
Trade:
Barker RobertDirector · Class II Director
Stock awardCommon StockNon-derivative security · Code A22,9160Value: 0Currency not specifiedView ↗
Trade:
Chan NelsonDirector · Class I Director
Stock awardCommon StockNon-derivative security · Code A22,9160Value: 0Currency not specifiedView ↗
Trade:
Chun KukjinDirector · Class I Director
Stock awardCommon StockNon-derivative security · Code A22,9160Value: 0Currency not specifiedView ↗
Trade:
Lee KyeonghoDirector · Chairman & Class III Director
Stock awardCommon StockNon-derivative security · Code A22,9160Value: 0Currency not specifiedView ↗
Trade:
Shin HyunsooDirector · Class II Director
Stock awardCommon StockNon-derivative security · Code A22,9160Value: 0Currency not specifiedView ↗
Trade:
Shin HyunsooDirector · Class II Director
PurchaseCommon StockNon-derivative security · Code P16,7251.28Value: 21,408Currency not specifiedView ↗
Trade:
Shin HyunsooDirector · Class II Director
PurchaseCommon StockNon-derivative security · Code P3,1801.28Value: 4,070.4Currency not specifiedView ↗
Trade:
Shin HyunsooDirector · Class II Director
PurchaseCommon StockNon-derivative security · Code P25,4531.28Value: 32,579.84Currency not specifiedView ↗

Reporting owners are associated with a filing. Jointly reported amounts are not allocated to individual owners. Historical coverage is still being built. Read the methodology →