GCT Semiconductor grants CTO 100,000 RSUs

GCT Semiconductor Holding, Inc. granted its CTO 100,000 time-vesting RSUs tied to continued service, lifting his direct holdings to 402,701 shares-equivalent.

Rhea-AI Filing Summary

GCT Semiconductor Holding, Inc. (symbol: GCTS) is the issuer of record for a Form 4 filing submitted to the SEC. Kim Jeong-Min reported acquisition or exercise transactions in this Form 4 filing.

GCT Semiconductor Holding, Inc. (GCTS) reported that Chief Technology Officer Kim Jeong-Min received an equity grant on September 10, 2026 covering 100,000 restricted stock units (RSUs), each representing a contingent right to one share of common stock. The RSUs vest in equal 25% installments on each anniversary of the September 10, 2026 grant date over four years, subject to Kim’s continued service with the company. Following this award, Kim directly holds 402,701 shares/RSUs of common stock. No Rule 10b5-1 trading plan is reported for this grant.

Insider Trade Summary

Grant/Award: 100,000 shares

Grant/Award 1 txn

Insider Kim Jeong-Min

Role Chief Technology Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.0001 per share F1	100,000	$0.00	$0.00

Holdings After Transaction: Common Stock, par value $0.0001 per share — 402,701 shares (Direct)

Footnotes (1)

1. F1. Represents restricted stock units ("RSU"), which constitute a contingent right to receive one share of common stock, par value $0.0001 per share, of GCT Semiconductor Holding, Inc. The RSUs vest over four years in equal 25% installments on each anniversary of the September 10, 2026 grant date, commencing September 10, 2026, subject to the Reporting Person's continued service with the Issuer.

Key Figures

RSUs granted: 100,000 units Vesting schedule: 25% per year over 4 years Holdings after grant: 402,701 shares/RSUs +1 more

4 metrics

RSUs granted 100,000 units Restricted stock units granted on September 10, 2026 to the CTO

Vesting schedule 25% per year over 4 years Annual vesting on each anniversary of the September 10, 2026 grant date

Holdings after grant 402,701 shares/RSUs Direct holdings of common stock after the reported transaction

Transaction price per share $0.00 Form 4 reports the RSU grant at no per-share purchase price

Key Terms

restricted stock units ("RSU"), contingent right, continued service

3 terms

restricted stock units ("RSU") financial

"Represents restricted stock units ("RSU"), which constitute a contingent right"

contingent right financial

"which constitute a contingent right to receive one share of common stock"

continued service financial

"commencing September 10, 2026, subject to the Reporting Person's continued service"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What equity award did GCTS grant to its CTO Kim Jeong-Min on September 10, 2026?

GCT Semiconductor Holding, Inc. granted Chief Technology Officer Kim Jeong-Min 100,000 restricted stock units (RSUs), each representing a contingent right to receive one share of common stock, par value $0.0001 per share.

How do the new RSUs for GCTS CTO Kim Jeong-Min vest?

The 100,000 RSUs vest over four years in equal 25% installments on each anniversary of the September 10, 2026 grant date, beginning September 10, 2026, and are subject to Kim Jeong-Min’s continued service with GCT Semiconductor Holding, Inc.

What are Kim Jeong-Min’s GCTS holdings after this Form 4 transaction?

After the reported grant, Chief Technology Officer Kim Jeong-Min directly holds 402,701 shares/RSUs of GCT Semiconductor Holding, Inc. common stock, as stated in the Form 4 filing.

Was the GCTS CTO’s September 10, 2026 RSU grant made under a Rule 10b5-1 plan?

No. The filing indicates no Rule 10b5-1 trading plan for this transaction; the document-level Rule 10b5-1 checkbox is unchecked and no footnote describes a trading plan.

Does the GCTS CTO have to stay with the company to receive all RSU shares?

Yes. Vesting of the 100,000 RSUs is expressly conditioned on the Reporting Person’s continued service with GCT Semiconductor Holding, Inc., with 25% vesting each year over a four-year period from the grant date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/14/2026 - 04:32 PM Accepted by SEC EDGAR 09/14/2026 - 04:28 PM Learn about SEC filing dates

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).

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^*

Kim Jeong-Min

(Last) (First) (Middle)

C/O GCT SEMICONDUCTOR HOLDING, INC.

2290 NORTH 1ST STREET, SUITE 201

(Street)

SAN JOSE CALIFORNIA 95131

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

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

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

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

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	09/10/2026		A(1)		100,000	A	$0	402,701	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 ("RSU"), which constitute a contingent right to receive one share of common stock, par value $0.0001 per share, of GCT Semiconductor Holding, Inc. The RSUs vest over four years in equal 25% installments on each anniversary of the September 10, 2026 grant date, commencing September 10, 2026, subject to the Reporting Person's continued service with the Issuer.

	/s/ Edmond Cheng, attorney-in-fact	09/14/2026
	** 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).
** 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.
* Form 4: SEC 1474 (03-26)