Initial Statement of Beneficial Ownership of Securities

This filing reports the initial beneficial ownership of securities for Jinwu Huang, Chief Financial Officer of CN ENERGY GROUP, INC. (CNEY). Mr. Huang directly owns 40 Class A Ordinary Shares. The shares are held of record by Jinwu Huang, as noted in footnote F1. The report details Mr. Huang's ownership following a transaction, with 40 shares owned after the transaction. The filing specifies the owner's address in Lishui, China, and identifies his role as Chief Financial Officer. The period of report is March 18, 2026.