X0607 3 2026-03-30 0 0001653242 Bank of N.T. Butterfield & Son Ltd NTB 0001232066 CUMMINGS STEPHEN E true 59 FRONT STREET HAMILTON D0 HM 12 BERMUDA 1 0 0 0 Restricted Stock Units 0 Bank of N.T. Butterfield & Son Ltd RSU 5149 D The restricted stock units vest 30 days after the grant date over two years, subject to continued service through each vesting period. These restricted stock units do not expire; they either vest and settle or are forfeited/cancelled prior to the applicable vesting date. Each restricted stock unit represents a contingent right to receive one share of Common Stock upon vesting/settlement. Tara Hidalgo, by power of attorney for Stephen Cummings 2026-04-01