Company: GCTS
Filing Date: 2025-05-30
Form Type: S-3/A
Source: 0001104659-25-054969
Chunk: 2

Company: GCT Semiconductor Holding, Inc.
Filing Date: 2025-05-30
Form: S-3/A
Chunk 2
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, 2024 (the “S-1
Registration Statement”). The S-1 Registration Statement registered (i) the issuance by us of up to 26,724,001 shares of our
common stock underlying warrants, (ii) the future resale of up to 35,970,732 shares of our common stock, and (iii) the future
resale of up to 6,580,000 private placement warrants, held by the selling securityholders named in the prospectus, as required by the
registration rights agreement that we initially entered into with certain of the selling securityholders on March 26, 2024.

This registration statement
replaces the S-1 Registration Statement and registers the issuance by us of up to 26,273,653 shares of our common stock underlying warrants,
and the future resale of up to 36,261,987 shares of our common stock and up to 6,728,320 private placement warrants and Anapass Warrants
(as defined below) by the selling securityholders named in this prospectus.

<div align='center'>The information in this prospectus is not complete and may be changed. We and the selling securityholders may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and it is not a solicitation of an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

Subject to Completion, dated May 30, 2025</div>

PROSPECTUS

<div align='center'>GCT Semiconductor Holding, Inc.

36,261,987 Shares of Common Stock
6,728,320 Warrants to Purchase Common Stock

Up to 26,273,653 Shares of Common Stock Issuable Upon Exercise of Warrants</div>

This prospectus relates to
the issuance by us of an aggregate of up to 26,273,653 shares of our common stock, $0.0001 par value per share (the “Common Stock”)
issuable upon the exercise of warrants, which consists of (a) up to 6,580,000 shares of Common Stock that are issuable upon the exercise
of 6,580,000 warrants (the “Private Placement Warrants”) held by Concord Sponsor Group III LLC (the “Sponsor”),
CA2 Co-Investment LLC (“CA2,” together with the Sponsor, the “Sponsors”), and an affiliate of stockholder of the
Company