Company: GCTS
Filing Date: 2025-03-26
Form Type: 424B3
Source: 0000929638-25-001281
Chunk: 0

Company: GCT Semiconductor Holding, Inc.
Filing Date: 2025-03-26
Form: 424B3
Chunk 0
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Prospectus Supplement No. 6 Filed Pursuant to Rule 424(b)(3) File No. 333-279600 GCT Semiconductor Holding, Inc. 2290 North 1st Street, Suite 201 San Jose, California 95131 (408) 434-6040 Prospectus Supplement No. 6 (to the Prospectus dated May 21, 2024) This Prospectus Supplement No. 6 supplements and amends the prospectus dated May 21, 2024, as amended by Prospectus Supplement No. 1 dated July 10, 2024, Prospectus Supplement No. 2 dated August 15, 2024, Prospectus Supplement No. 3 dated August 26, 2024, Prospectus Supplement No. 4 dated September 27, 2024, and Prospectus Supplement No. 5 dated November 15, 2024 (the “Prospectus”), relating to the sale from time to time of up to 10,900,000 shares of our common stock by a selling shareholder. On March 25, 2025, we filed with the U.S. Securities and Exchange Commission the attached Annual Report on Form 10-K. This Prospectus Supplement No. 6 should be read in conjunction with the Prospectus and is qualified by reference to the Prospectus except to the extent that the information in this Prospectus Supplement No. 6 supersedes the information contained in the Prospectus. Our common stock is traded on the New York Stock Exchange under the symbol “GCTS”. On March 25, 2025, the last reported sale price of our common stock was $2.09 per share. Investing in our common stock involves a high degree of risk. See “Risk Factors” beginning on page 6 of the Prospectus dated May 21, 2024. Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this Prospectus Supplement No. 6 is truthful or complete. Any representation to the contrary is a criminal offense. The date of this Prospectus Supplement No. 6 is March 26, 2025. FYfalse0001851961P3YP1Y666666666666676666667640125640125640125http://fasb.org/us-gaap/2024#OtherNonoperatingIncomeExpensehttp://fasb.org/srt/2024#ChiefExecutiveOfficerMember000185196