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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~~PURSUANT ~~EXCHANGE~~TO ~~ACT~~RULE OF13a-16 ~~1934~~OR 15d-16

~~For~~UNDER ~~the~~THE ~~month~~SECURITIES ofEXCHANGE ~~September~~ACT ~~2025~~OF 1934

~~Commission~~For ~~File~~the ~~Number:~~Month ~~001-39978~~of January 2026

Commission file number: 001-39978

CN ENERGY GROUP. INC.

Building 2-B, Room 206, No. 268 Shiniu Road

Liandu District, Lishui City, Zhejiang Province

The People’s Republic of China

(Address of principal executive ~~office~~offices)

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 ☐

~~EXPLANATORY~~Entry ~~NOTE~~into a Material Definitive Agreement.

CNNote ~~Energy~~Purchase ~~Group. Inc. (the “Company”) is furnishing this report of foreign private issuer on Form 6-K to provide the six-month interim financial statements for the period ended March 31~~Agreement, ~~2025~~Promissory Note and ~~incorporate~~Pledge ~~such financial statements into the Company’s registration statement referenced below.~~Agreement

~~This~~On ~~report~~January of16, ~~foreign~~2026, ~~private~~CN ~~issuer~~Energy onGroup. ~~Form~~Inc. ~~6-K~~(the is“Company”) ~~hereby~~entered ~~incorporated~~into bya ~~reference~~Note ~~into~~Purchase Agreement (the ~~registration~~“Note ~~statement~~Purchase onAgreement”) ~~Form~~with ~~F-3~~Streeterville ofCapital, ~~the~~LLC, ~~Company~~an ~~(File~~institutional ~~Number~~investor ~~333-264579~~(“Streeterville”), aspursuant ~~amended,~~to ~~and~~which ~~into~~Streeterville ~~the~~purchased ~~prospectus~~from ~~outstanding~~the ~~under~~Company ~~the~~a ~~foregoing~~secured ~~registration~~promissory ~~statement,~~note toin the ~~extent~~principal amount ~~not~~of ~~superseded~~$7,510,000.00 by(the ~~documents~~“Note”), orwhich ~~reports~~included ~~subsequently~~an ~~filed~~original orissue ~~furnished~~discount byof $490,000.00 (the ~~Company~~“OID”) ~~under~~and ~~the~~reimbursement ~~Securities~~of ~~Act~~Streeterville’s oftransaction ~~1933,~~expenses asof ~~amended~~$20,000, orfor ~~the~~gross ~~Securities~~proceeds ~~Exchange~~to ~~Act~~the Company of ~~1934~~$7, ~~as amended~~000,000.

~~Forward~~The ~~Looking~~Note ~~Statements~~bears interest at a rate of 7% per annum, was issued on January 16, 2026 (the “Issuance Date”) and matures 24 months after its Issuance Date. Beginning six months after Issuance Date, Streeterville may, from time to time, require the Company to redeem a portion of the Note, in an amount not to exceed $500,000 per month. Subject to the terms and conditions set forth in the Note, the Company may prepay all or any portion of the outstanding balance of the Note at any time by paying 105% of the outstanding balance elected to be prepaid.

~~This~~The ~~Report~~Note onis ~~Form~~secured ~~6-K~~by ~~includes~~a ~~“forward-looking~~collateral ~~statements”~~package ~~within~~that ~~the~~includes ~~meaning~~(i) ofa ~~the~~pledge ~~“safe harbor” provisions~~ of ~~the~~equity ~~Private~~interests ~~Securities Litigation Reform Act of 1995. Our actual results may differ from their expectations, estimates~~ and ~~projections~~(ii) ~~and~~cash ~~consequently,~~collateral ~~you~~maintained ~~should~~by ~~not~~CNEY ~~rely on these forward-looking statements as predictions of future events. Words such as “expect~~Holdings,” ~~“estimate,”~~LLC (“~~project,”~~CNEY ~~“budget,~~Holdings” ~~“forecast~~),” ~~“anticipate,”~~a ~~“intend,”~~wholly ~~“plan,”~~owned ~~“may,”~~subsidiary ~~“will,”~~of ~~“could,”~~the ~~“should~~Company,” ~~“believes,”~~in ~~“predicts,”~~a ~~“potential,”~~restricted ~~“continue,”~~deposit ~~and~~account ~~similar~~pursuant ~~expressions are intended~~ to ~~identify~~the ~~such~~Note ~~forward-looking~~Purchase ~~statements. These forward-looking statements include~~Agreement, ~~without~~consisting ~~limitation,~~of ~~our expectations with respect to future performance and anticipated financial impacts~~$6.0 ~~These~~million ~~forward-looking~~of ~~statements involve significant risks and uncertainties that could cause~~ the ~~actual~~net ~~results~~proceeds toof ~~differ materially from~~ the ~~expected~~Note ~~results. Most of these factors are outside our control~~ and ~~are~~subject ~~difficult~~ to ~~predict.~~a ~~Factors~~minimum ~~that~~balance ~~may~~equal ~~cause such differences include, but are not limited~~ to ~~risks and uncertainties incorporated by reference under “Risk Factors” in~~ the ~~Registrant’s~~lesser ~~Form~~of ~~20-F~~$6.0 ~~(001-39978)~~million ~~filed with the Securities~~ and ~~Exchange~~85% ~~Commission~~of (the ~~“SEC”) on February 15, 2024 (the “Form 20~~then-~~F”)~~outstanding ~~and~~balance in the Registrant’s other filings with the SEC. The Registrant cautions that the foregoing factors are not exclusive. The Registrant cautions readers not to place undue reliance upon any forward-looking statements, which speak only as of the ~~date made~~Note. The Registrant does not undertake or accept any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements to reflect any change in its expectations or any change in events, conditions or circumstances on which any such statement is based.

The Note Purchase Agreement and the Note contain customary representations and warranties, affirmative and restrictive covenants, and events of default, including if the Company undertakes a fundamental transaction (including consolidations, mergers, and certain changes in control of the Company), without Streeterville’s prior written consent, subject to certain exceptions as provided in the Note. As described in the Note, upon the occurrence of certain events of default, the outstanding balance of the Note will become automatically due and payable. Additionally, upon an event of default described in the Note, the interest rate on the outstanding balance automatically increases to the lesser of 18% or the maximum rate permitted by law.

The Note Purchase Agreement provides for indemnification of Streeterville and its affiliates in the event that they incur loss or damage related to, among other things, a breach by the Company of any of its representations, warranties or covenants under the Note Purchase Agreement.

In connection with the Note Purchase Agreement, on January 16, 2026, the Company also entered into a Pledge Agreement (the “Pledge Agreement”) with Streeterville pursuant to which the Company pledged to Streeterville 100% of the membership interests it owns in CNEY Holdings. The pledge secures all of the Company’s obligations under the Note and related transaction documents and grants Streeterville a first-priority security interest in the pledge equity, together with any proceeds, distributions or other rights relating thereto. Upon the occurrence and continuance of an event of default under the Note, Streeterville is entitled to exercise customary secured party remedies with respect to the pledged equity, subject to applicable notice and cure provisions.

The descriptions of the Note Purchase Agreement, the Note and the Pledge Agreement do not purport to be complete and are qualified in their entirety by the full text of the Note Purchase Agreement, the Note and the Pledge Agreement, copies of which are filed herewith as Exhibits 10.1, 10.2 and 10.3, respectively, and which are incorporated herein 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 333-292319), as amended, and into the prospectus outstanding under the foregoing registration statement, to the extent not superseded by documents or report subsequently filed or furnished by the Company under Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.

EXHIBIT

Exhibit No.		Description
10.1		Note Purchase Agreement, dated January 16, 2026 by and between the Company and Streeterville Capital, LLC.
10.2		Promissory Note, dated January 16, 2026
10.3		Pledge Agreement, dated January 16, 2026 by and between the Company and Streeterville Capital, LLC

~~SIGNATURES~~SIGNATURE

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

	CN Energy Group. Inc.
Date: September 29, 2025	By:	/s/ Wenhua Liu
Date: January 22, 2026	By:	/s/ Wenhua Liu
	Name:	Wenhua Liu
	Title:	Interim Chief Executive Officer

EXHIBIT INDEX
Exhibit
No.		Description
99.1		Unaudited Condensed Consolidated Financial Statements for the Six Months Ended March 31, 2025 and 2024
99.2		Management’s Discussion and Analysis Of Financial Condition and Results of Operations
101		Interactive Data Files (formatted as Inline XBRL)
104		Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

Filing Compare · CN ENERGY GROUP. INC.