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~~April 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 Hongli Group Inc. (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as amended, and into the prospectus outstanding under the foregoing registration statement, to the extent not superseded by documents or reports subsequently filed or furnished by the Company under the Securities Act of 1933, as amended (the “Securities Act”), or the Securities Exchange Act of 1934, as amended.

~~Changes~~Entry ininto ~~Registrant’s~~a ~~Certifying~~Material ~~Accountant~~Definitive Agreement and Unregistered Sale of Equity Securities.

On ~~January~~April 911, 2026, the ~~audit~~Company ~~committee~~entered ofinto ~~the~~a ~~board~~Securities ofPurchase ~~the~~Agreement ~~directors~~ (the “~~Board~~Securities Purchase Agreement”) ofwith ~~Hongli~~a ~~Group Inc~~U.,S. ainvestor ~~Cayman Islands exempted company~~ (the “~~Company~~Investor”) ~~approved~~ ~~the~~for ~~change~~a ofprivate ~~the~~placement ~~Company’s~~offering, ~~independent~~providing ~~auditor~~the tosale ~~HTL~~and ~~International,~~issuance ~~LLC~~of ~~(“HTL”)~~1,300,000 inordinary ~~place~~shares of ~~RBSM LLP~~ ~~(“RBSM”).~~the ~~The~~ Company’s, ~~dismissal~~par ofvalue ~~RBSM~~$0.0001 ~~became~~per ~~effective as of January 9,~~share ~~2026, and~~ (the ~~engagement~~“Shares”), ofat ~~HTL~~a aspurchase ~~the~~price ~~independent~~of ~~auditor~~$0.25 ofper ~~the~~Share, ~~Company~~for ~~became~~aggregate ~~effective~~gross asproceeds of ~~January 9~~$325, ~~2026~~000. toThe ~~audit~~Securities ~~the~~Purchase Agreement ~~consolidated~~contains ~~financial~~customary ~~statements~~representations and warranties of the Company and ~~its subsidiaries for~~ the ~~years~~Investor ~~ended~~and ~~December~~customary ~~31,~~indemnification ~~2025, 2024~~ and obligations ~~2023~~of the parties.

~~RBSM’s~~The ~~report~~closing onof the ~~Company’s~~private ~~financial statements~~placement ~~for~~is ~~the years ended December 31, 2024 and 2023 did not contain an adverse opinion or disclaimer of opinion, nor was it qualified~~expected ~~or modified as~~ to ~~uncertainty,~~occur ~~audit~~on ~~scope,~~ or ~~accounting~~around ~~principles.~~April ~~Furthermore~~20, ~~during the Company’s two most recent fiscal years and through January 9,~~ 2026, ~~there~~subject ~~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~~satisfaction ~~matter~~ of ~~the~~customary ~~disagreement~~closing ~~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~~conditions, ~~2026,~~ ~~there~~unless ~~were~~otherwise nomutually ~~“reportable~~agreed ~~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 Uparties.~~S. Securities and Exchange Commission (the “Commission”) on May 12, 2025.~~

The ~~Company~~offer ~~has~~and sale of the Shares were made in reliance upon the exemption from registration provided ~~RBSM~~by ~~with~~Section 4(a)(2) ~~copy~~ of the ~~above~~ ~~disclosure~~Securities Act of 1933 and/or ~~requested~~Regulation ~~that~~D ~~RBSM~~promulgated thereunder. ~~furnish~~The aShares ~~letter~~have ~~addressed~~not tobeen ~~the~~registered ~~Commission~~under ~~stating~~the ~~whether~~Securities Act or any state securities laws and may not itbe ~~agrees~~offered ~~with~~or ~~the~~sold ~~above~~in ~~statements.~~the AUnited ~~copy~~States ofabsent ~~RBSM’s~~registration ~~letter~~or isan ~~filed~~applicable ~~herewith~~exemption asfrom ~~Exhibit~~the 16registration requirements of the Securities Act and applicable state securities laws.1.

~~During~~The ~~the~~foregoing ~~two~~description ~~most recent fiscal years and any subsequent interim periods prior to the engagement~~ of ~~HTL, neither~~ the ~~Company,~~Securities ~~nor anyone on behalf of the Company, has consulted HTL~~Purchase ~~regarding~~Agreement ~~either~~does ~~the~~not ~~application~~purport ~~of accounting principles~~ to ~~a specified transaction, whether completed or proposed, or the type of audit opinion that might~~ be ~~rendered~~complete onand ~~the~~is ~~Company’s~~qualified ~~consolidated~~in ~~financial~~its ~~statements.~~entirety ~~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~~reference ~~Company in reaching a decision as~~ to the ~~accounting,~~full ~~auditing,~~text orof ~~financial reporting issue. Additionally, neither~~ the ~~Company,~~Securities ~~nor~~Purchase ~~anyone on behalf of it~~Agreement, ~~has consulted~~ ~~HTL~~which ~~regarding~~is ~~any~~filed ~~matter that was the subject of a “disagreement”~~ as ~~defined~~Exhibit ~~in Item 16F(a)(~~10.1~~)(iv)~~ ~~of Form 20-F and related instructions~~ to ~~Item~~this ~~16F~~Report ofon Form 206-F,K orand ~~any~~is ~~“reportable~~incorporated ~~events”~~herein asby ~~described in Item 16F(a)(1)(v) of Form 20-F~~reference.

EXHIBIT INDEX

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

EXHIBIT INDEX

Exhibit No.		Description
10.1*		Form of Securities Purchase Agreement by and between the Company and the Investor

Certain personally identifiable information has been omitted from this exhibit pursuant to Item 601(a)(6) of Regulation S-K.

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.
	HONGLI GROUP INC.
Date: January 12, 2026	By:	/s/ Jie Liu
Date: April 16, 2026	By:	/s/ Jie Liu
		Jie Liu
		Chief Executive Officer
		(Principal Executive Officer)

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