Company: GCTS
Filing Date: 2025-03-26
Form Type: 424B3
Source: 0000929638-25-001281
Chunk: 188

Company: GCT Semiconductor Holding, Inc.
Filing Date: 2025-03-26
Form: 424B3
Chunk 188
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 payment shall not cause the Company to make interest payments to the Lender in the aggregate that exceeds $120,000 in any 12 month period.

Loan date: January 24, 2025

Maturity date: February 24, 2025

Early repayment: Early repayment before the maturity date is possible at the option of Borrower

Article 4 (Loan execution)

Upon the parties signing this loan agreement, Lender is required to transfer the loan principal amount of KRW6,500,000,000 to the Borrower account.

Borrower bank account number: [***]

Article 5 (Repayment)

Repayment of the loan must be made in Korean Won.

Interest shall be paid on the 28 th day of each month. However, in case of early repayment, the calculation is done daily.

Repayment funds are covered in the order of accrued interest and principal.

If Borrower falls under any of the following, the loan must be repaid immediately at the time the relevant event occurs before the maturity date.

① Insolvency

② Apply for bankruptcy

③ Bond preservation

④ Court management

Article 6 (Events of Late Payment)

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If Borrower fails to pay timely any of the principal amount or any accrued interest due under this loan agreement on maturity date, Borrower shall pay penalty of 3.0% of principal per month calculated daily until principal and accrued interest has been paid.

Article 7 (Effectiveness of agreement)

This contract is effective from the date of signature and seal by both parties.

Article 8 (Resolution of Disputes)

Matters not specified in this agreement shall be subject to relevant laws and customs, and if a dispute arises in connection with this contract, the competent court shall be the court with jurisdiction over the location of Lender.

January 24, 2025

Lender: Kyeongho Lee

[***]

By:

/s/ Kyeongho Lee

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Name: Kyeongho Lee

Borrower: GCT Research, Inc.

Address: 11F., Specialty Construction Center, 15, Boramae-ro 5-gil, Dongjak Gu, Seoul 07071, Korea

By:

/s/ Jeongmin Kim

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Name: Jeongmin Kim

Title: President and Representative Director

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EXHIBIT 10.28

<div align='center'>CERTAIN