Yefang Zhang - 16 Sep 2025 SCHEDULE 13D Report for CN ENERGY GROUP. INC. Class B Ordinary Shares, no par value (CNEY)

Filing manager: Yefang Zhang
Reporting owner: Yefang Zhang
Security: CN ENERGY GROUP. INC. Class B Ordinary Shares, no par value
Beneficially owned shares: 635,419 shares
Class ownership: 100%
Large-stake signal: Form
SCHEDULE 13D
Active or control-oriented beneficial ownership filing.
Ownership
100%
Beneficial ownership of this reported class.
Shares
635,419 shares
Shares beneficially owned as disclosed.
Event date
16 Sep 2025
Date tied to the ownership event or amendment.
Accepted by SEC
25 Nov 2025
EDGAR acceptance date.
How to read this large-stake filing
Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
Compare this filing with the holder history and issuer page before treating the percentage as a current position.
Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
Symbol: CNEY
Shares outstanding: 635,419 shares
Form type: SCHEDULE 13D
Accepted by SEC: 25 Nov 2025, 16:05:07 UTC
Event date: 16 Sep 2025
SEC filing: View on sec.gov

Key filing fact

Yefang Zhang disclosed 100% ownership in CN ENERGY GROUP. INC. Class B Ordinary Shares, no par value (CNEY) on 16 Sep 2025.

Key facts

Yefang Zhang filed SCHEDULE 13D for CN ENERGY GROUP. INC. Class B Ordinary Shares, no par value (CNEY).
Disclosed ownership: 100%.
Date of event: 16 Sep 2025.

This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

Reporting persons

Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.

Name	Ownership	Shares owned	Sole voting power	Shared voting power	Signature	Title	CIK
Yefang Zhang	100%	635,419	635,419	0	/s/ Yefang Zhang	Yefang Zhang	0001667258
Weastfinace Group Inc	99%	631,391	0	0	/s/ Xinyang Wang	Xinyang Wang/Manager

CIK / CUSIP context first

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