[Form 4] GCT Semiconductor Holding, Inc. Insider Trading Activity

Rhea-AI Filing Summary

GCT Semiconductor Holding, Inc. director Nelson Chan was granted 18,092 restricted stock units (RSUs) on 09/30/2025 under the GCT 2024 Omnibus Incentive Compensation Plan. Each RSU converts to one share of common stock following vesting; the grant size was determined by dividing a fixed cash amount of $27,500 by the fair market value per share of $1.52 on the transaction date, producing the rounded share count. The RSUs vest on 03/31/2026 subject to continued service, and no expiration date applies. After the grant, the reporting person beneficially owns 78,604 shares.

Positive

• 18,092 RSUs granted to a director, increasing alignment with shareholders
• RSUs vest on 03/31/2026, tying compensation to continued service
• Beneficial ownership increased to 78,604 shares after the grant

Negative

• None.

Insights

Corporate Governance Analyst

Director awarded service-based RSUs totaling 18,092 shares, vesting March 31, 2026.

The grant was calculated from a $27,500 award divided by a $1.52 fair market value per share on 09/30/2025, yielding 18,092 RSUs. These units convert to one share each upon vesting and require continued service through 03/31/2026.

This is a standard compensation award for a director and increases the director's beneficial ownership to 78,604 shares, aligning personal stake with shareholder outcomes.

10/02/2025 - 04:05 PM

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

1. Name and Address of Reporting Person^*

Chan Nelson

(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 I Director

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

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	09/30/2025		A		18,092(1)(2)(3)(4)	A	$0	78,604	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 $1.52 on September 30, 2025, rounded down to the nearest whole share.

3. The RSUs 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	10/02/2025
	** 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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did GCTS director Nelson Chan report on Form 4?

The report discloses the acquisition of 18,092 restricted stock units (RSUs) under the GCT 2024 Omnibus Incentive Compensation Plan.

How was the number of RSUs determined for the grant to Nelson Chan?

The award equals $27,500 divided by the fair market value per share of $1.52 on 09/30/2025, rounded down to whole shares.

When do the RSUs granted to the director vest?

The RSUs vest on 03/31/2026, subject to the reporting person's continued service through that date.

How many shares does the reporting person beneficially own after the transaction?

Following the reported acquisition, the reporting person beneficially owns 78,604 shares.

Do the restricted stock units have an expiration date?

No expiration date is applicable to these restricted stock units.