GCT Semiconductor director granted 24,122 RSUs

TUDER JEFFREY reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

TUDER JEFFREY reported acquisition or exercise transactions in this Form 4 filing.

GCT Semiconductor Holding, Inc. director Jeffrey Tuder reported an equity compensation grant of 24,122 shares of Common Stock through Restricted Stock Units (RSUs) at no cash cost per share. The award size was set by dividing $27,500 by the $1.14 fair market value on March 31, 2026.

The RSUs will vest on March 31, 2026, if he continues serving through that date and will be settled in Common Stock under his deferral election. Following this grant, Tuder directly holds 141,931 shares of Common Stock.

Insider Trade Summary

Grant/Award: 24,122 shares

Grant/Award 1 txn

Insider TUDER JEFFREY

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	24,122	$0.00	$0.00

Holdings After Transaction: Common Stock — 141,931 shares (Direct)

Footnotes (4)

1. 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.
2. 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 $1.14 on March 31, 2026, rounded down to the nearest whole share.
3. F3. The RSUs will vest on March 31, 2026, subject to continued service through such date.
4. F4. No expiration date is applicable to restricted stock units.

Key Figures

RSU shares granted: 24,122 shares Grant value basis: $27,500 Fair market value per share: $1.14 per share +4 more

7 metrics

RSU shares granted 24,122 shares Common Stock RSU award determined as of March 31, 2026

Grant value basis $27,500 Quarterly amount divided by fair market value to set award size

Fair market value per share $1.14 per share Fair market value of Common Stock on March 31, 2026

Post-transaction holdings 141,931 shares Total Common Stock directly owned after RSU grant

Transaction price per share $0.00 No cash price for RSU grant acquisition

RSU vesting date March 31, 2026 RSUs vest on this date, subject to continued service

RSU determination period April 1, 2025–March 31, 2026 Period over which quarterly award size is calculated

Key Terms

Restricted Stock Unit ("RSU"), fair market value per share, deferral election, vesting, +1 more

5 terms

Restricted Stock Unit ("RSU") financial

"Each Restricted Stock Unit ("RSU") represents the right to receive one share of common stock"

fair market value per share financial

"by dividing $27,500 by the fair market value per share of Common Stock, which was determined to be $1.14"

deferral election financial

"The RSUs become payable in Common Stock in accordance with a deferral election made by the reporting person."

vesting financial

"The RSUs will vest on March 31, 2026, subject to continued service through such date."

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

expiration date financial

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

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

FAQ

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

What did GCTS director Jeffrey Tuder report in this Form 4 filing?

Jeffrey Tuder reported receiving an equity grant of Restricted Stock Units representing 24,122 shares of GCT Semiconductor common stock. The RSUs were granted as compensation, carry no cash purchase price, and will convert into shares after they vest in 2026, subject to continued service.

How many GCT Semiconductor (GCTS) shares are covered by Jeffrey Tuder’s RSU award?

The RSU award covers 24,122 shares of GCT Semiconductor common stock. This amount was calculated by dividing $27,500 by the $1.14 fair market value per share on March 31, 2026, then rounding down to the nearest whole share, as described in the footnotes.

When do Jeffrey Tuder’s GCTS RSUs vest and become payable in stock?

The RSUs will vest on March 31, 2026, if Jeffrey Tuder continues to serve through that date. Once vested, they become payable in GCT Semiconductor common stock according to a deferral election he made, meaning the payout timing follows his chosen deferral arrangements.

How was the size of Jeffrey Tuder’s GCTS RSU award determined?

The award size is determined each calendar quarter by dividing $27,500 by the fair market value per share of GCT Semiconductor stock. For March 31, 2026, the fair market value was $1.14, producing 24,122 shares after rounding down to the nearest whole share.

How many GCT Semiconductor (GCTS) shares does Jeffrey Tuder hold after this transaction?

After the RSU grant, Jeffrey Tuder directly holds 141,931 shares of GCT Semiconductor common stock. This figure reflects his total direct ownership reported in the filing following the acquisition of 24,122 additional shares through the Restricted Stock Unit award.

What does a Restricted Stock Unit (RSU) represent in the GCTS filing?

Each RSU represents the right to receive one share of GCT Semiconductor common stock after vesting. The units themselves do not carry an expiration date and become payable in stock based on the vesting schedule and any deferral election made by the reporting person.

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

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Accepted by SEC EDGAR 04/02/2026 - 04:04 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^*

TUDER JEFFREY

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/31/2026

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	03/31/2026		A		24,122(1)(2)(3)(4)	A	$0	141,931	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. 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 $1.14 on March 31, 2026, 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	04/02/2026
	** 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)