Director at GCT Semiconductor (NASDAQ: GCTS) granted 24,122 RSUs

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Shin Hyunsoo reported acquisition or exercise transactions in this Form 4 filing.

GCT Semiconductor Holding, Inc. director Hyunsoo Shin reported receiving a grant of 24,122 Restricted Stock Units (RSUs) of common stock on March 31, 2026 as equity compensation under the GCT 2024 Omnibus Incentive Compensation Plan. Each RSU represents one share of common stock after vesting, with no cash price paid for the award.

The number of RSUs was determined by dividing $27,500 by the fair market value per share of common stock, which was $1.14 on March 31, 2026, then rounding down to the nearest whole share. These RSUs vest on March 31, 2026, subject to continued service. Following this grant, Shin holds 804,809 shares of common stock directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Shin Hyunsoo

Role Director

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

Holdings After Transaction: Common Stock — 804,809 shares (Direct)

Footnotes (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. 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. The RSUs will vest on March 31, 2026, subject to continued service through such date. No expiration date is applicable to restricted stock units.

Key Figures

RSU grant size: 24,122 RSUs Grant value basis: $27,500 Fair market value per share: $1.14 per share +2 more

5 metrics

RSU grant size 24,122 RSUs Equity award to director on March 31, 2026

Grant value basis $27,500 Numerator used to determine RSUs each quarter

Fair market value per share $1.14 per share Fair market value on March 31, 2026 used for RSU calculation

Shares after transaction 804,809 shares Director’s total common shares following RSU award

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

Key Terms

Restricted Stock Units ("RSUs"), GCT 2024 Omnibus Incentive Compensation Plan, fair market value per share, vesting, +1 more

5 terms

Restricted Stock Units ("RSUs") financial

"Represents Restricted Stock Units ("RSUs") acquired pursuant to the terms of the GCT Semiconductor Holding, Inc."

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

GCT 2024 Omnibus Incentive Compensation Plan financial

"acquired pursuant to the terms of the GCT Semiconductor Holding, Inc. (the "Issuer") GCT 2024 Omnibus Incentive Compensation Plan."

vesting financial

"Each RSU represents the right to receive one share of common stock ... following vesting."

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.

Form 4 Insider Transactions: What Each Field Means →

04/02/2026 - 07:01 AM

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^*

Shin Hyunsoo

(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 II 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)
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	03/31/2026		A		24,122⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾	A	$0	804,809	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. 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 $1.14 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did GCTS report for director Hyunsoo Shin?

GCT Semiconductor reported that director Hyunsoo Shin received 24,122 Restricted Stock Units (RSUs) of common stock as an equity award. The RSUs were granted under the GCT 2024 Omnibus Incentive Compensation Plan and represent future shares deliverable after vesting conditions are met.

How was the 24,122 RSU grant for GCTS director Shin calculated?

The RSU grant size was set by dividing $27,500 by the fair market value per share of GCT Semiconductor common stock. On March 31, 2026, that fair market value was $1.14 per share, and the result was rounded down to the nearest whole share to determine 24,122 RSUs.

When do Hyunsoo Shin’s GCTS RSUs vest and what is required?

The RSUs granted to director Hyunsoo Shin are scheduled to vest on March 31, 2026. Vesting is conditioned on his continued service with GCT Semiconductor through that date, after which each vested RSU converts into one share of common stock.

What does each RSU granted to the GCTS director represent?

Each Restricted Stock Unit represents the right to receive one share of GCT Semiconductor common stock following vesting. The RSUs do not require any cash payment from the director and are a form of stock-based compensation tied to continued service with the company.

How many GCTS shares does director Hyunsoo Shin hold after this award?

After the reported RSU grant, director Hyunsoo Shin is shown as holding 804,809 shares of GCT Semiconductor common stock directly. This total reflects his position following the March 31, 2026 equity award reported in the Form 4 filing.

What plan governs the RSU grant reported for GCTS director Shin?

The RSU grant to director Hyunsoo Shin was made under the GCT Semiconductor Holding, Inc. GCT 2024 Omnibus Incentive Compensation Plan. This plan provides for equity-based awards, including RSUs that deliver one share of common stock per unit upon vesting.