What is Hyunsoo Shin’s total GCT Semiconductor (GCTS) share ownership after this RSU grant?

Following the reported RSU award, director Hyunsoo Shin is shown as directly owning 814,068 shares of GCT Semiconductor Common Stock. This figure reflects his position after the acquisition of the 9,259 RSUs reported in the Form 4 filing.

GCT Semiconductor (GCTS) director receives 9,259 RSUs as equity pay

Q: What insider transaction did GCT Semiconductor (GCTS) report for director Hyunsoo Shin?

GCT Semiconductor reported that director Hyunsoo Shin received a grant of 9,259 Restricted Stock Units (RSUs) of Common Stock as equity compensation. The award was issued at $0.00 per share under the company’s 2024 Omnibus Incentive Compensation Plan .

Q: How many RSUs did GCT Semiconductor (GCTS) grant and how was the amount calculated?

The company granted 9,259 RSUs to director Hyunsoo Shin. For the quarter ending June 30, 2026, the award size was determined by dividing $27,500 by the Common Stock’s $2.97 fair market value per share, then rounding down to the nearest whole share.

Q: When do Hyunsoo Shin’s RSUs at GCT Semiconductor (GCTS) vest?

The RSUs granted to Hyunsoo Shin will fully vest on March 31, 2027 , provided he continues serving through that date. Upon vesting, each RSU will convert into one share of GCT Semiconductor’s Common Stock , increasing his freely owned share count.

Q: What plan governs the RSU award reported for GCT Semiconductor (GCTS) director Shin?

The RSU award was granted under the GCT 2024 Omnibus Incentive Compensation Plan . This plan allows the company to issue Restricted Stock Units where each RSU represents the right to receive one share of Common Stock following satisfaction of the specified vesting conditions.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

GCT Semiconductor Holding, Inc. director Hyunsoo Shin reported an equity compensation award of 9,259 shares of Common Stock in the form of Restricted Stock Units (RSUs). The grant was made at a price of $0.00 per share under the GCT 2024 Omnibus Incentive Compensation Plan.

According to the award terms, the number of RSUs for the quarter ending June 30, 2026 was determined by dividing $27,500 by the $2.97 fair market value per share, rounded down to the nearest whole share. All RSUs from this award will vest on March 31, 2027, subject to continued service, and will then convert into an equal number of common shares, bringing Shin’s reported direct holdings to 814,068 shares after the transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Shin Hyunsoo

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	9,259	$0.00	--

Holdings After Transaction: Common Stock — 814,068 shares (Direct, null)

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, 2026 through March 31, 2027 (beginning with the quarter ending June 30, 2026) by dividing $27,500 by the fair market value per share of Common Stock, which was determined to be $2.97 on June 30, 2026, rounded down to the nearest whole share. The RSUs will vest on March 31, 2027, subject to continued service through such date. No expiration date is applicable to restricted stock units.

Key Figures

RSUs granted: 9,259 shares Transaction price per share: $0.00 per share Award value basis: $27,500 +4 more

7 metrics

RSUs granted 9,259 shares Restricted Stock Units awarded to director on June 30, 2026

Transaction price per share $0.00 per share Equity compensation, no cash paid by insider

Award value basis $27,500 Quarterly amount used to determine RSUs for period

Fair market value $2.97 per share Common Stock fair market value on June 30, 2026

Shares after transaction 814,068 shares Director’s direct Common Stock holdings following grant

Vesting date March 31, 2027 RSUs vest subject to continued service through this date

Award period April 1, 2026–March 31, 2027 Calendar quarters over which RSU amounts are determined

Key Terms

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

5 terms

Restricted Stock Units ("RSUs") financial

"Represents Restricted Stock Units ("RSUs") acquired pursuant to the terms"

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.

Omnibus Incentive Compensation Plan financial

"GCT 2024 Omnibus Incentive Compensation Plan. Each RSU represents the right"

An omnibus incentive compensation plan is a single, flexible program that lets a company grant different kinds of pay — such as cash bonuses, stock options, restricted stock, or performance awards — to employees, executives and directors. Investors care because the plan affects how much ownership can be given away (dilution), how much the company spends on pay, and whether executives’ goals are aligned with shareholders, much like a menu that decides what rewards staff can pick and how costly they are.

vesting financial

"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.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/02/2026 - 04:47 PM Accepted by SEC EDGAR 07/02/2026 - 04:46 PM

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)
06/30/2026

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	06/30/2026		A		9,259⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾	A	$0	814,068	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, 2026 through March 31, 2027 (beginning with the quarter ending June 30, 2026) by dividing $27,500 by the fair market value per share of Common Stock, which was determined to be $2.97 on June 30, 2026, rounded down to the nearest whole share.

3. The RSUs will vest on March 31, 2027, subject to continued service through such date.

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

	/s/ Edmond Cheng, attorney-in-fact	07/02/2026
	** 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 GCT Semiconductor (GCTS) report for director Hyunsoo Shin?

GCT Semiconductor reported that director Hyunsoo Shin received a grant of 9,259 Restricted Stock Units (RSUs) of Common Stock as equity compensation. The award was issued at $0.00 per share under the company’s 2024 Omnibus Incentive Compensation Plan.

How many RSUs did GCT Semiconductor (GCTS) grant and how was the amount calculated?

The company granted 9,259 RSUs to director Hyunsoo Shin. For the quarter ending June 30, 2026, the award size was determined by dividing $27,500 by the Common Stock’s $2.97 fair market value per share, then rounding down to the nearest whole share.

When do Hyunsoo Shin’s RSUs at GCT Semiconductor (GCTS) vest?

The RSUs granted to Hyunsoo Shin will fully vest on March 31, 2027, provided he continues serving through that date. Upon vesting, each RSU will convert into one share of GCT Semiconductor’s Common Stock, increasing his freely owned share count.

Does the RSU grant to GCT Semiconductor (GCTS) director involve any cash payment?

No cash payment is involved for this grant. The Form 4 shows 9,259 RSUs acquired at a transaction price of $0.00 per share, indicating the award is purely equity-based compensation under the GCT 2024 Omnibus Incentive Compensation Plan.

What plan governs the RSU award reported for GCT Semiconductor (GCTS) director Shin?

The RSU award was granted under the GCT 2024 Omnibus Incentive Compensation Plan. This plan allows the company to issue Restricted Stock Units where each RSU represents the right to receive one share of Common Stock following satisfaction of the specified vesting conditions.