Company: CNEY
Filing Date: 2025-10-29
Form Type: F-1/A
Source: 0001477932-25-007791
Chunk: 1

Company: CN ENERGY GROUP. INC.
Filing Date: 2025-10-29
Form: F-1/A
Chunk 1
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 the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933.

Emerging growth company ☒

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

†The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

The Registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment that specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act, or until this registration statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

<div align='center'>EXPLANATORY NOTE</div>

This Pre-Effective Amendment No. 1 to Form F-3 on Form F-1 is being filed to convert the Registration Statement on Form F-3 filed by CN Energy Group. Inc. on June 30, 2025 (Registration No. 333-288429) into a Registration Statement on Form F-1.

The information in this prospectus is not complete and may be changed. The Selling Shareholders may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and is not soliciting offers to buy these securities in any jurisdiction where the offer or sale is not permitted.

<div align='center'>Resale of Up to 1,977,302 Class A Ordinary Shares

CN ENERGY GROUP. INC.</div>

This prospectus relates to the offer and resale from time to time of up to 1,977,302 Class A ordinary shares (the “Shares”), no par value (