Skip to main content
Signal8
Launch Terminal

GCT Semiconductor Holding, Inc. (GCTS)

GCT Semiconductor Holding, Inc. (GCTS) Insider Trading

Directors, officers and holders of more than 10% of GCTS report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 112 transactions on file: 7 with code P, 0 with code S and 43 with other codes.

DateInsiderCodeShares
Sep 30, 2026Barker RobertA Award12,971
Sep 30, 2026Chan NelsonA Award12,971
Sep 30, 2026Shin HyunsooA Award12,971
Sep 30, 2026Lee KyeonghoA Award12,971
Sep 30, 2026Chun KukjinA Award12,971
Sep 30, 2026TUDER JEFFREYA Award12,971
Sep 10, 2026Cheng EdmondA Award145,000
Sep 10, 2026Sum AlexA Award75,000
Sep 10, 2026Schlaefer JohnA Award150,000
Sep 10, 2026Kim Jeong-MinA Award100,000
Jun 30, 2026Chun KukjinA Award9,259
Jun 30, 2026Lee KyeonghoA Award9,259
Jun 30, 2026Chan NelsonA Award9,259
Jun 30, 2026Barker RobertA Award9,259
Jun 30, 2026Shin HyunsooA Award9,259
Jun 30, 2026TUDER JEFFREYA Award9,259
Mar 31, 2026Shin HyunsooA Award24,122
Mar 31, 2026TUDER JEFFREYA Award24,122
Mar 31, 2026Barker RobertA Award24,122
Mar 31, 2026Chun KukjinA Award24,122
Mar 31, 2026Lee KyeonghoA Award24,122
Mar 31, 2026Chan NelsonA Award24,122
Feb 23, 2026Chun KukjinG Gift40,000
Dec 31, 2025Chun KukjinA Award22,916
Dec 31, 2025TUDER JEFFREYA Award22,916
Dec 31, 2025Chan NelsonA Award22,916
Dec 31, 2025Shin HyunsooA Award22,916
Dec 31, 2025Lee KyeonghoA Award22,916
Dec 31, 2025Barker RobertA Award22,916
Nov 25, 2025Shin HyunsooP Purchase16,725
Nov 21, 2025Shin HyunsooP Purchase3,180
Nov 20, 2025Shin HyunsooP Purchase25,453
Sep 30, 2025TUDER JEFFREYA Award18,092
Sep 30, 2025Barker RobertA Award18,092
Sep 30, 2025Chan NelsonA Award18,092
Sep 30, 2025Chun KukjinA Award18,092
Sep 30, 2025Lee KyeonghoA Award18,092
Sep 30, 2025Shin HyunsooA Award18,092
Sep 26, 2025Schlaefer JohnJ Other555
Sep 19, 2025Sum AlexA Award75,000
Sep 19, 2025Cheng EdmondA Award75,000
Sep 19, 2025Schlaefer JohnA Award75,000
Sep 19, 2025Kim Jeong-MinA Award75,000
Sep 12, 2025Shin HyunsooP Purchase44,067
Sep 5, 2025Shin HyunsooP Purchase10,300
Sep 4, 2025Shin HyunsooP Purchase8,250
Aug 15, 2025Shin HyunsooP Purchase121,000
Jun 30, 2025Shin HyunsooA Award18,456
Jun 30, 2025Lee KyeonghoA Award18,456
Jun 30, 2025Barker RobertA Award18,456

The full Form 4 history is on the GCTS company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.