GCT Semiconductor (GCTS) chairman receives 22,916 RSUs in equity grant

Q: How was the 22,916 RSU grant for GCT Semiconductor (GCTS) calculated?

The RSU amount was determined by dividing $27,500 by the fair market value of common stock, which was $1.20 per share on December 31, 2025 , and rounding down to the nearest whole share.

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

The RSUs will vest on March 31, 2026 , provided the reporting person continues in service through that date.

Q: What does each GCT Semiconductor (GCTS) RSU represent in this filing?

Each restricted stock unit represents the right to receive one share of GCT Semiconductor common stock after vesting, payable in stock under a deferral election.

Q: Do the GCT Semiconductor (GCTS) RSUs in this Form 4 have an expiration date?

No. The filing states that no expiration date is applicable to the restricted stock units.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

GCT Semiconductor Holding, Inc. reported an equity award for a director who also serves as Chairman and Class III Director. On December 31, 2025, the director was granted 22,916 restricted stock units (RSUs) of common stock at a reference fair market value of $1.20 per share, representing a quarterly value of $27,500 for the award calculation period.

Each RSU represents the right to receive one share of common stock after vesting, and the units will vest on March 31, 2026, subject to continued service. Following this transaction, the director beneficially owned 1,062,741 shares of common stock directly. The RSUs are settled in stock according to a deferral election made by the reporting person and do not have an expiration date.

Insider Trade Summary

Net Buyer: 22,916 shares

Net Buy 1 txn

Insider Lee Kyeongho

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	22,916	$0.00	$0.00

Holdings After Transaction: Common Stock — 1,062,741 shares (Direct)

Footnotes (4)

F1. Each Restricted Stock Unit ("RSU") represents the right to receive one share of common stock, par value $0.0001 per share ("Common Stock") of GCT Semiconductor Holding, Inc. (the "Issuer") following vesting. The RSUs become payable in Common Stock in accordance with a deferral election made by the reporting person.
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, 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.
F3. The RSUs will vest on March 31, 2026, subject to continued service through such date.
F4. No expiration date is applicable to restricted stock units.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 01/05/2026 - 04:15 PM

FAQ

What insider transaction did GCT Semiconductor (GCTS) report in this Form 4?

The company reported that a director who is also Chairman and Class III Director received 22,916 restricted stock units (RSUs) of common stock on December 31, 2025.

How was the 22,916 RSU grant for GCT Semiconductor (GCTS) calculated?

The RSU amount was determined by dividing $27,500 by the fair market value of common stock, which was $1.20 per share on December 31, 2025, and rounding down to the nearest whole share.

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

The RSUs will vest on March 31, 2026, provided the reporting person continues in service through that date.

What does each GCT Semiconductor (GCTS) RSU represent in this filing?

Each restricted stock unit represents the right to receive one share of GCT Semiconductor common stock after vesting, payable in stock under a deferral election.

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

After the reported RSU grant, the director beneficially owned 1,062,741 shares of GCT Semiconductor common stock directly.

Do the GCT Semiconductor (GCTS) RSUs in this Form 4 have an expiration date?

No. The filing states that no expiration date is applicable to the restricted stock units.

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^*

Lee Kyeongho

(Last)

(First)

(Middle)

C/O GCT SEMICONDUCTOR HOLDING, INC.

2290 NORTH 1ST STREET, SUITE 201

(Street)

SAN JOSE

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)
			Chairman & Class III 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	12/31/2025		A		22,916⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾	A	$0	1,062,741	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Each Restricted Stock Unit ("RSU") represents the right to receive one share of common stock, par value $0.0001 per share ("Common Stock") of GCT Semiconductor Holding, Inc. (the "Issuer") following vesting. The RSUs become payable in Common Stock in accordance with a deferral election made by the reporting person.

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 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	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).
** 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.

Source: View Original Filing on SEC EDGAR