Form 3 Filing - Canadian Solar Inc. - Ownership Change

This filing details a change in ownership for Canadian Solar Inc. (CSIQ), specifically concerning Leslie Chang, a director. The filing reports the acquisition of 21,538 Restricted Share Units (RSUs) with a direct ownership nature. These RSUs are convertible into Common Shares upon vesting, with vesting dates extending from April 1, 2026, to January 1, 2029. Each RSU represents a contingent right to one Common Share. Following these transactions, the reporting owner holds 1,001 Common Shares directly. The filing was signed by Leslie Chang on March 18, 2026.