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

Rhea-AI Filing Summary

John Schlaefer, President, CEO and Class III Director of GCT Semiconductor Holding, Inc. (GCTS), received a distribution of 555 shares of common stock on 09/26/2025 from Parakletos @ Venture Millennium Fund LP for no consideration. After the transaction the reporting person beneficially owns 202,728 shares, held directly. The Form 4 was signed by an attorney-in-fact, Edmond Cheng, on 09/30/2025. The filing documents an insider acquisition that modestly increases the reporting person’s direct stake in the company.

Positive

• Reporting person increased direct beneficial ownership by 555 shares to a total of 202,728 shares
• Transaction disclosed with explanation that shares were a distribution from Parakletos @ Venture Millennium Fund LP

Negative

• None.

Insights

Securities Analyst

TL;DR: Insider received a small distribution of shares, modestly increasing direct ownership to 202,728 shares.

The Form 4 shows a non‑cash distribution of 555 common shares to the reporting person on 09/26/2025, recorded under code J(1). This is an acquisition recorded as a distribution from Parakletos @ Venture Millennium Fund LP rather than a purchase. The transaction increases direct beneficial ownership to 202,728 shares. There is no exercise, sale, option activity or cash consideration disclosed. For investors, this is a routine insider ownership adjustment rather than a material capital or compensation event.

Corporate Governance Expert

TL;DR: Filing documents a standard distribution to an officer/director; disclosure appears complete and properly executed.

The Form 4 identifies the reporting person as President, CEO and Class III Director and reports the acquisition type and resulting holdings. The explanation clarifies the shares were a distribution from a fund to the reporting person. The form is signed by an attorney‑in‑fact, consistent with permitted reporting procedures. No indications of compensatory grants, derivative instruments, or disposals are present in this filing.

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).

1. Name and Address of Reporting Person^*

Schlaefer John

(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
X	Officer (give title below)		Other (specify below)
	President, CEO & Class III Dir

3. Date of Earliest Transaction (Month/Day/Year)
09/26/2025

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, par value $0.0001 per share	09/26/2025		J(1)		555	A	$0	202,728	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. The transaction is a distribution of 555 shares of Common Stock, for no consideration, by the Parakletos @ Venture Millennium Fund LP. to the Reporting Person.

	/s/Edmond Cheng, attorney-in-fact	09/30/2025
	** 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 John Schlaefer report on Form 4 for GCTS?

The Form 4 reports a distribution of 555 shares of common stock to John Schlaefer on 09/26/2025 from Parakletos @ Venture Millennium Fund LP.

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

After the reported transaction the reporting person beneficially owns 202,728 shares of GCTS common stock.

Was any cash paid for the shares reported on the Form 4?

No cash was paid; the Form 4 states the 555 shares were a distribution and the price is listed as $0.

What is the reporting person's role at GCT Semiconductor Holding, Inc. (GCTS)?

The reporting person is listed as President, CEO and Class III Director of GCT Semiconductor Holding, Inc.

Who signed the Form 4 filing?

The Form 4 was signed by /s/ Edmond Cheng, attorney‑in‑fact on 09/30/2025.