Hongli Group (NASDAQ: HLP) appoints HTL as new auditor from RBSM

Rhea-AI Filing Summary

Hongli Group Inc. is changing its independent auditor. The board’s audit committee dismissed RBSM LLP and appointed HTL International, LLC as the new auditor, effective January 9, 2026, to audit the company’s consolidated financial statements for the years ended December 31, 2025, 2024 and 2023.

RBSM’s reports on the 2024 and 2023 financial statements did not contain adverse opinions, disclaimers, or qualifications related to uncertainty, scope, or accounting principles, and the company reports no disagreements with RBSM over accounting, disclosure, or audit procedures during the past two fiscal years and through January 9, 2026. The only reportable events in that period were material weaknesses in internal control previously identified by management in the 2024 Form 20-F. RBSM has sent a letter to the SEC agreeing with the statements about its firm. The company also states it did not consult HTL on accounting or audit matters before the engagement.

Insights

Audit & Governance Analyst

Hongli Group changes auditors without reported disputes or adverse opinions.

Hongli Group Inc. reports a shift in its independent auditor from RBSM LLP to HTL International, LLC, effective January 9, 2026. HTL is engaged to audit consolidated financial statements for the years ended December 31, 2025, 2024 and 2023, which means it will re-audit prior years already covered by RBSM.

The company notes that RBSM’s reports for 2024 and 2023 contained no adverse opinions, disclaimers, or qualifications and that there were no disagreements on accounting principles, disclosure, or audit scope through January 9, 2026. It also references previously disclosed material weaknesses in internal control from the 2024 Form 20-F, but does not add detail here. RBSM’s letter to the SEC confirms its agreement with the statements about the firm.

Hongli also states that neither it nor its representatives consulted HTL on specific accounting treatments or potential audit opinions before the appointment. This emphasizes that HTL’s engagement follows formal approval by the audit committee, and any impact on reported results will become clear only when HTL’s audits for 2023–2025 are completed and disclosed in future filings.

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 January 2026

Hongli Group Inc.

(Exact name of registrant as specified in its charter)

No. 777, Daiyi Road,

Changle County, Weifang City,

Shandong Province, China, 262400

(Address of Principal Executive Office)

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

Form 20-F ☒             Form 40-F ☐

Incorporation by Reference

This report of foreign private issuer on Form 6-K is hereby incorporated by reference into the registration statement on Form F-3 of the Company (File Number 333-289457), as amended, and into the prospectus outstanding under the foregoing registration statement, to the extent not superseded by documents or reports subsequently filed or furnished by the Company under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.

Changes in Registrant’s Certifying Accountant

On January 9, 2026, the audit committee of the board of the directors (the “Board”) of Hongli Group Inc., a Cayman Islands exempted company (the “Company”) approved the change of the Company’s independent auditor to HTL International, LLC (“HTL”), in place of RBSM LLP (“RBSM”). The Company’s dismissal of RBSM became effective as of January 9, 2026, and the engagement of HTL as the independent auditor of the Company became effective as of January 9, 2026 to audit the consolidated financial statements of the Company and its subsidiaries for the years ended December 31, 2025, 2024 and 2023.

RBSM’s report on the Company’s financial statements for the years ended December 31, 2024 and 2023 did not contain an adverse opinion or disclaimer of opinion, nor was it qualified or modified as to uncertainty, audit scope, or accounting principles. Furthermore, during the Company’s two most recent fiscal years and through January 9, 2026, there were no disagreements with RBSM on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreements, if not resolved to RBSM’s satisfaction, would have caused RBSM to make reference to the subject matter of the disagreement in connection with its reports on the Company’s financial statements for such periods. During the Company’s two most recent fiscal years and through January 9, 2026, there were no “reportable events,” as that term is described in Item 16F(a)(1)(v) of Form 20-F, other than the material weaknesses identified by management under the Company’s annual report on Form 20-F for the year ended December 31, 2024, filed with the U.S. Securities and Exchange Commission (the “Commission”) on May 12, 2025.

The Company has provided RBSM with a copy of the above disclosure and requested that RBSM furnish a letter addressed to the Commission stating whether or not it agrees with the above statements. A copy of RBSM’s letter is filed herewith as Exhibit 16.1.

During the two most recent fiscal years and any subsequent interim periods prior to the engagement of HTL, neither the Company, nor anyone on behalf of the Company, has consulted HTL regarding either the application of accounting principles to a specified transaction, whether completed or proposed, or the type of audit opinion that might be rendered on the Company’s consolidated financial statements. Neither a written report was provided to the Company nor was any oral advice provided that HTL concluded was an important factor considered by the Company in reaching a decision as to the accounting, auditing, or financial reporting issue. Additionally, neither the Company, nor anyone on behalf of it, has consulted HTL regarding any matter that was the subject of a “disagreement” as defined in Item 16F(a)(1)(iv) of Form 20-F and related instructions to Item 16F of Form 20-F, or any “reportable events” as described in Item 16F(a)(1)(v) of Form 20-F.

EXHIBIT INDEX

Exhibit No.		Description
16.1		Letter, dated January 9, 2026, from RBSM LLP addressed to the U.S. Securities and Exchange Commission

1

SIGNATURES

Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Hongli Group Inc.
Date: January 12, 2026	By:	/s/ Jie Liu
		Jie Liu
		Chief Executive Officer
		(Principal Executive Officer)

2

EXHIBIT 16.1

January 9, 2026

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Dear Sirs/Madams:

We have read the statements made by Hongli Group Inc. in its Form 6-K. We agree with the statements concerning our Firm in such Form 6-K; we are not in a position to agree or disagree with other statements of Hongli Group Inc. contained therein.

Yours truly,

/s/ RBSM LLP

RBSM LLP

FAQ

What change did Hongli Group Inc. (HLP) report in this Form 6-K?

Hongli Group Inc. reported that its audit committee dismissed RBSM LLP and appointed HTL International, LLC as its new independent auditor effective January 9, 2026.

Which financial years will HTL International, LLC audit for Hongli Group Inc. (HLP)?

HTL International, LLC is engaged to audit Hongli Group Inc.’s consolidated financial statements for the years ended December 31, 2025, 2024 and 2023.

Did RBSM LLP issue any adverse opinions on Hongli Group Inc.’s financial statements?

RBSM LLP’s reports on Hongli Group Inc.’s financial statements for 2024 and 2023 did not contain adverse opinions, disclaimers of opinion, or qualifications related to uncertainty, audit scope, or accounting principles.

Were there any disagreements between Hongli Group Inc. (HLP) and RBSM LLP?

Hongli Group Inc. states that during its two most recent fiscal years and through January 9, 2026, there were no disagreements with RBSM LLP on accounting principles, financial statement disclosure, or auditing scope or procedures.

What reportable events related to Hongli Group Inc.’s prior audits are mentioned?

The company notes there were no reportable events as defined in Item 16F of Form 20-F during the period, other than material weaknesses previously identified by management in its Form 20-F for the year ended December 31, 2024.

Did Hongli Group Inc. consult HTL International, LLC before appointing it as auditor?

Hongli Group Inc. reports that neither it nor anyone on its behalf consulted HTL International, LLC on specific accounting principles, audit opinions, disagreements, or reportable events prior to HTL’s engagement.

How did RBSM LLP respond to Hongli Group Inc.’s description of the auditor change?

In a letter dated January 9, 2026, filed as Exhibit 16.1, RBSM LLP stated it agrees with the statements about its firm in Hongli Group Inc.’s Form 6-K and is not in a position to agree or disagree with other statements.