Alex Sum - Sep 19, 2025 Form 4 Insider Report for GCT Semiconductor Holding, Inc. (GCTS)

Role
Sr. VP of Sales and Marketing
Signature
/s/ Edmond Cheng, attorney-in-fact
Stock symbol
GCTS
Transactions as of
Sep 19, 2025
Transactions value $
$0
Form type
4
Date filed
9/23/2025, 04:05 PM
Previous filing
Feb 21, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Sum Alex Sr. VP of Sales and Marketing C/O GCT SEMICONDUCTOR HOLDING, INC., 2290 NORTH 1ST STREET, SUITE 201, SAN JOSE /s/ Edmond Cheng, attorney-in-fact 2025-09-22 0001543349

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GCTS Common Stock, par value $0.0001 per share Award $0 +75K +68.97% $0.00 184K Sep 19, 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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 19, 2025 grant date, commencing September 19, 2026, subject to the Reporting Person's continued service with the Issuer.