Ownership Filing for Michael McWatt

This filing details the ownership of Bank of N.T. Butterfield & Son Ltd securities by Michael McWatt. As of March 31, 2026, McWatt directly holds 34,544 shares of common stock. Additionally, the filing reports on restricted stock units (RSUs) with a direct ownership nature. There are two grants of RSUs detailed: one with 7,079 units vesting on February 12, 2027, and another with 57,526 units vesting on February 10, 2028, and February 9, 2029. These RSUs represent a contingent right to receive one share of common stock upon vesting, with specific vesting dates outlined in the footnotes. The RSUs do not expire and will either vest or be forfeited before the applicable vesting date. McWatt holds the title of Managing Director, Cayman.