SCHEDULE 13G/A

CANAAN INC

Class A ordinary shares, par value US$0.00000005 per share · CUSIP: 134748102

Event date: 2025-12-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Zhang Nangeng

  Shares: 576,066,269.00 · Class: 5.8%

• Flueqel Ltd.

  Shares: 311,624,444.00 · Class: 3.1%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.