GCT Semiconductor (NASDAQ: GCTS) director receives 22,916 RSUs

Rhea-AI Filing Summary

GCT Semiconductor Holding, Inc. reported an equity grant to a director in the form of restricted stock units (RSUs). On 12/31/2025, the Class II director received 22,916 shares of common stock as RSUs at a price of $0 per share under the GCT 2024 Omnibus Incentive Compensation Plan. Each RSU converts into one share of common stock after vesting, and the award is scheduled to vest on March 31, 2026, subject to continued service.

The number of RSUs for this quarter was determined by dividing $27,500 by the fair market value of the company’s common stock, which was $1.20 per share on December 31, 2025, rounded down to the nearest whole share. Following this grant, the reporting person beneficially owned 780,687 shares of GCT Semiconductor common stock directly.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Shin Hyunsoo

(Last) (First) (Middle)

C/O GCT SEMICONDUCTOR HOLDING, INC.

2290 NORTH 1ST STREET, SUITE 201

(Street)

SAN JOSE CA 95131

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
GCT Semiconductor Holding, Inc. [ GCTS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Class II Director

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/31/2025		A		22,916(1)(2)(3)(4)	A	$0	780,687	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. 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, 2025 through March 31, 2026 (beginning with the quarter ending June 30, 2025) by dividing $27,500 by the fair market value per share of Common Stock, which was determined to be $1.20 on December 31, 2025, rounded down to the nearest whole share.

3. The RSU's will vest on March 31, 2026, subject to continued service through such date.

4. No expiration date is applicable to restricted stock units.

	/s/ Edmond Cheng, attorney-in-fact	01/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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FAQ

What insider transaction did GCT Semiconductor Holding, Inc. (GCTS) report?

GCT Semiconductor Holding, Inc. reported that a Class II director received 22,916 restricted stock units (RSUs) of common stock on 12/31/2025 under the GCT 2024 Omnibus Incentive Compensation Plan.

How was the number of RSUs determined in this GCTS Form 4 filing?

The number of RSUs was calculated by dividing $27,500 by the fair market value of GCT Semiconductor common stock, which was $1.20 per share on December 31, 2025, then rounding down to the nearest whole share.

When do the reported RSUs for GCT Semiconductor (GCTS) vest?

The RSUs granted to the director are scheduled to vest on March 31, 2026, provided the director continues to serve through that date.

What does each RSU represent in the GCT Semiconductor (GCTS) award?

Each restricted stock unit represents the right to receive one share of GCT Semiconductor common stock, par value $0.0001 per share, following vesting.

How many GCT Semiconductor (GCTS) shares does the reporting person own after this transaction?

After the RSU grant reported on this Form 4, the reporting person beneficially owned 780,687 shares of GCT Semiconductor common stock directly.

What is the relationship of the reporting person to GCT Semiconductor (GCTS)?

The reporting person is identified as a Director of GCT Semiconductor Holding, Inc. and is also noted as an Other relationship specified as a Class II Director.