Company: GCTS
Filing Date: 2025-05-16
Form Type: 424B5
Source: 0001104659-25-049833
Chunk: 16

Company: GCT Semiconductor Holding, Inc.
Filing Date: 2025-05-16
Form: 424B5
Chunk 16
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 of this Offering.
This means that, during the applicable lock-up period, we, our directors and executive officers, and our 10% stockholders may not offer
for sale, contract to sell, or sell any shares of our Common Stock or any securities convertible into, or exercisable or exchangeable
for, shares of our Common Stock, subject to certain customary exceptions.

<div align='center'>S-11

LEGAL MATTERS</div>

Morgan, Lewis &
Bockius LLP, Palo Alto, California, has passed upon the validity of the Securities offered by this prospectus supplement. Ellenoff Grossman &
Schole LLP, New York, New York is acting as counsel for the Placement Agent in connection with certain matters related to the Offering.

<div align='center'>EXPERTS</div>

The consolidated financial
statements of the Company as of December 31, 2024 and 2023, and for each of the two years in the period ended December 31, 2024,
incorporated in this registration statement by reference to the Annual Report on Form 10-K for the year ended December 31, 2024,
have been so incorporated in reliance on the report (which contains an explanatory paragraph relating to the Company’s ability to
continue as a going concern as described in Note 1 to the consolidated financial statements) of BPM LLP, an independent registered public
accounting firm, given on the authority of said firm as experts in auditing and accounting.

<div align='center'>S-12

WHERE YOU CAN FIND MORE INFORMATION</div>

We are subject to certain
information reporting requirements of the Exchange Act, and, in accordance with these requirements, we file annual, quarterly and current
reports, proxy statements and other information with the SEC. Our SEC filings are available to you at the SEC’s website at http://www.sec.gov
and our website at https://investors.gctsemi.com/sec-filings. The information contained in, or that can be accessed through, our website
is not a part of this prospectus supplement.

We have filed with the SEC
a registration statement on Form S-3 relating to the securities offered by this prospectus supplement. This prospectus supplement
is a part of that registration statement, which includes additional information about us and the securities offered by this prospectus
supplement. You may review and obtain a copy of the registration statement and the exhibits that are a part of the registration statement
through the SEC’s website or our website.