Initial Statement of Beneficial Ownership

Tara Hidalgo, Chief Risk Officer of Bank of N.T. Butterfield & Son Ltd, has filed an initial statement of beneficial ownership. The filing, dated March 31, 2026, reports ownership of 18,586 shares of the company's common stock. Additionally, Hidalgo has been granted 5,724 restricted stock units (RSUs) with a vesting date of February 12, 2027, and 42,704 performance-based stock units (PSUs) with vesting dates on February 10, 2028, and February 9, 2029. These RSUs and PSUs are contingent on continued service and represent a right to receive one share of common stock upon vesting. The RSUs do not expire and will either vest and settle or be forfeited/cancelled prior to the vesting date. The conversion or exercise price for these units is reported as zero.