X0508 4 2026-02-21 0000903419 ALERUS FINANCIAL CORP ALRS 0001681474 Lorenson Katie A 401 DEMERS AVENUE GRAND FORKS ND 58201 1 1 President & CEO 0 Common Stock 2026-02-21 4 M 0 5572 A 53937 D Common Stock 2026-02-23 4 F 0 2025 25.45 A 51912 D Common Stock 2635.5376 I By the Alerus Financial Corporation Employee Stock Ownership Program Restricted Stock Units 2026-02-21 4 M 0 5572 0 D Common Stock 5572 0 D On February 21, 2023, the reporting person was granted 5,572 restricted stock units vesting on February 21, 2026. Restricted stock units convert into common stock on a one-for-one basis. Includes 3,263 shares of restricted stock and 11,626 shares held jointly with Ms. Lorenson's spouse. Shares withheld upon vesting of restricted stock units for payment of tax liability. Reflects ESOP allocations that have occurred since the date of the reporting person's last ownership report. /s/ Nicholas Brenckman, by power of attorney 2026-02-24