Company: GCTS
Filing Date: 2025-03-26
Form Type: 424B3
Source: 0000929638-25-001281
Chunk: 202

Company: GCT Semiconductor Holding, Inc.
Filing Date: 2025-03-26
Form: 424B3
Chunk 202
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 by the Company regarding Rule 10b5-1 Plans for the purpose of providing the required disclosures or any other disclosures that the Company deems to be appropriate under the circumstances.

Each director, executive officer and other Section 16 insider understands that the approval or adoption of a pre-planned selling program in no way reduces or eliminates such person’s obligations under Section 16 of the Exchange Act, including such person’s disclosure and short-swing trading liabilities thereunder. If any questions arise, such person should consult with their own counsel in implementing a Rule 10b5-1 Plan.

Company Assistance.Any person who has a question about this Policy or its application to any proposed transaction may obtain additional guidance from the Chief Financial Officer, Chief Executive Officer, or the Company’s legal counsel. In addition, if you have any doubt as to whether you are in possession of material nonpublic information or whether a trade may otherwise violate this Policy, you should contact the foregoing person(s) before trading any securities of the Company.

Other Procedures.The Company may change these procedures or adopt such other procedures in the future as the Company considers appropriate or advisable in order to carry out the purposes of this Policy or to comply with the federal securities laws. Wherever this Policy refers to, or calls for action by or involving the Company’s Chief Financial Officer, such reference shall include such other person as the Chief Financial Officer may designate from time to time, if the Chief Financial Officer is unavailable or otherwise unable to act for any reason.

No Third Party Rights.This Policy is not intended to create any rights in third parties with respect to any violation of its terms and is also not intended to create any legal liability for the Company or any employee, officer or director beyond those for which they are already responsible under applicable securities laws.

Certifications.All employees, officers and directors must certify their understanding of, and intent to comply with, this Policy. A copy of the certification that all employees (other than executive officers) must sign is attached to this Policy. Please return an executed copy of the attached certification immediately. Directors, executive officers and certain key employees are also subject to additional restrictions on their transactions in Company Securities, which are described in a separate Addendum to this Policy. Directors, executive officers and such key employees subject to the Addendum should sign the certification attached to that Addendum instead of the one attached hereto.

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### CERTIFICATION
I hereby certify that:

1. I have read and understand the Statement of Company Policy Regarding Insider Trading dated March