Hyunsoo Shin - 30 Jun 2026 Form 4 Insider Report for GCT Semiconductor Holding, Inc. (GCTS)

Reporting relationship: Director, Class II Director
Issuer ticker: GCTS
Reported as of: 30 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Jul 2026, 16:46:41 UTC
Prior SEC filing: 02 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Edmond Cheng, attorney-in-fact

Key filing fact

Hyunsoo Shin filed Form 4 for GCT Semiconductor Holding, Inc. (GCTS) on 02 Jul 2026.

Key facts

This page summarizes Hyunsoo Shin's Form 4 filing for GCT Semiconductor Holding, Inc. (GCTS).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 02 Jul 2026, 16:46.

Change

Previous filing in this sequence was filed on 02 Apr 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002007757 Primary reporting owner

Shin Hyunsoo

Relationship: Director, Class II Director
Address: C/O GCT SEMICONDUCTOR HOLDING, INC., 2290 NORTH 1ST STREET, SUITE 201, SAN JOSE
Signature: /s/ Edmond Cheng, attorney-in-fact
Signature date: 02 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GCTS transaction

Common Stock

Award

Transaction value
Shares: +9,259
Change %: +1.2%
Price: $0.000000^*
Shares after: 814,068
Date: 30 Jun 2026
Ownership: Direct
Footnotes: F1, F2, F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Represents Restricted Stock Units ("RSUs") acquired pursuant to the terms of the GCT Semiconductor Holding, Inc. (the "Issuer") GCT 2024 Omnibus Incentive Compensation Plan. Each RSU represents the right to receive one share of common stock, par value $0.0001 per share ("Common Stock") of the Issuer following vesting.

Footnote F2

The number of shares subject to and issuable under the award is determined on the last day of each calendar quarter during the period April 1, 2026 through March 31, 2027 (beginning with the quarter ending June 30, 2026) by dividing $27,500 by the fair market value per share of Common Stock, which was determined to be $2.97 on June 30, 2026, rounded down to the nearest whole share.

Footnote F3

The RSUs will vest on March 31, 2027, subject to continued service through such date.

Footnote F4

No expiration date is applicable to restricted stock units.