Form 3 Filing for Canaan Inc. - Ownership Change

This filing reports a change in beneficial ownership for Canaan Inc. (CAN), with Zhang Nangeng, CEO and Director, reporting holdings. The filing details both derivative and non-derivative securities. Zhang Nangeng directly owns 370,884,600 Class A ordinary shares. Derivative holdings include 34,524,525 American Depositary Shares (ADS), each convertible into 15 Class A ordinary shares, and 311,624,444 Class B ordinary shares, each convertible into one Class A ordinary share. The Class B shares are indirectly held through Flueqel Ltd., a company wholly owned by a trust where Zhang Nangeng is the beneficiary. The reporting date for this transaction is March 18, 2026.