Katie A. Lorenson - 26 Feb 2026 Form 4 Insider Report for ALERUS FINANCIAL CORP (ALRS)

Role: Chief Executive Officer, Director
Signature: /s/ Nicholas Brenckman, by power of attorney
Issuer symbol: ALRS
Transactions as of: 26 Feb 2026
Net transactions value: -$72,940
Form type: 4
Filing time: 02 Mar 2026, 16:09:37 UTC
Previous filing: 02 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Lorenson Katie A	Chief Executive Officer, Director	401 DEMERS AVENUE, GRAND FORKS	/s/ Nicholas Brenckman, by power of attorney	02 Mar 2026	0001681474

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALRS	Common Stock	Options Exercise	$0	+9,363	+18%	$0.000000	61,397	26 Feb 2026	Direct	F1, F2, F3
transaction	ALRS	Common Stock	Tax liability	$72,940	-2,866	-4.7%	$25.45	58,531	26 Feb 2026	Direct	F3, F4
holding	ALRS	Common Stock						6,640	26 Feb 2026	By the Alerus Financial Corporation Employee Stock Ownership Program	F5

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ALRS	Restricted Stock Units	Options Exercise	$0	-9,363	-100%	$0.000000	0	26 Feb 2026	Common Stock	9,363		Direct	F1, F2
transaction	ALRS	Restricted Stock Units	Award	$0	+19,022		$0.000000	19,022	26 Feb 2026	Common Stock	19,022		Direct	F2, F6, F7

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On February 21, 2023, the reporting person was granted 8,359 performance-based restricted stock units, vesting upon Alerus Financial Corporation Compensation Committee certification of established total net income goals. The payout could be increased to 150% of target or reduced to 0% based on achievement of the applicable metric. The Alerus Financial Corporation Compensation Committee certified the payout at 112% and the performance-based restricted stock units vested on February 26, 2026.
F2	Restricted stock units convert into common stock on a one-for-one basis.
F3	Includes 3,263 shares of restricted stock and 11,626 shares held jointly with Ms. Lorenson's spouse.
F4	Shares withheld upon vesting of restricted stock units for payment of tax liability.
F5	Reflects ESOP allocations that have occurred since the date of the reporting person's last ownership report.
F6	Includes 7,609 restricted stock units that have time-based vesting components. Includes 11,413 restricted stock units that have performance-based vesting components.
F7	The time-based restricted stock units vest on February 26, 2029. The performance-based restricted stock units vest upon Alerus Financial Corporation Compensation Committee certification of certain relative cumulative EPS and ROE performance period goals, provided that such certification date occurs no later than March 15, 2029. The payout for performance-based restricted stock units could be increased to 150% of target or reduced to 0% based on achievement of the applicable metrics.