Company: FSTWF
Filing Date: 2025-11-03
Form Type: 6-K
Source: 0001213900-25-104784
Chunk: 0

Company: FST Corp.
Filing Date: 2025-11-03
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of October 2025

Commission File Number: 001-42475

FST Corp.

(Registrant’s Name)

No. 3, Gongye 1st Rd., Minxiong Township

Chiayi County 621018, Taiwan

(Address of Principal Executive Offices)</div>

Indicate by check mark whether the registrant
files or will file annual reports under cover Form 20-F or Form 40-F.

<div align='center'>Form 20-F ☒
Form 40-F ☐</div>

Change in Independent Registered Public Accounting Firm

On October 28, 2025, the
Audit Committee (the “Audit Committee”) of the Board of Directors of FST Corp., a Cayman Islands exempted company
with limited liability (the “Company”) approved the dismissal of KPMG Taiwan, located at No.11, Zhanye 1st Rd.,
Hsinchu Science Park, East Dist., Hsinchu City 300091, Taiwan, Republic of China (“KPMG Taiwan”), as the Company’s
independent registered public accounting firm.

KPMG Taiwan served as the
Company’s independent registered public accounting firm for the fiscal year ended December 31, 2024. During the fiscal year ended
December 31, 2024, and the subsequent interim period through October 28, 2025, there were no: (1) disagreements with KPMG Taiwan on any
matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedures, which disagreements if
not resolved to their satisfaction would have caused them to make reference in connection with their opinion to the subject matter of
the disagreement, or (2) reportable events, except that KPMG Taiwan advised the Company of the following material weaknesses: In connection
with the preparation of the Company’s consolidated financial statements for the year ended December 31, 2024, the Company had identified
errors in financial reporting for the year ended December 31, 2023 related to the recognition of deferred income taxes and initial offering
process expenses, which was disclosed on the Company’s annual report on Form