    <SEC-DOCUMENT>0001558370-22-004856-index.html : 20220331
    <SEC-HEADER>0001558370-22-004856.hdr.sgml : 20220331
    <ACCEPTANCE-DATETIME>20220331122345
    ACCESSION NUMBER:		0001558370-22-004856
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		8
    CONFORMED PERIOD OF REPORT:	20220510
    FILED AS OF DATE:		20220331
    DATE AS OF CHANGE:		20220331

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ALERUS FINANCIAL CORP
    		CENTRAL INDEX KEY:			0000903419
    		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
    		IRS NUMBER:				450375407
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-39036
    		FILM NUMBER:		22790668

    	BUSINESS ADDRESS:
    		STREET 1:		401 DEMERS AVE
    		CITY:			GRAND FORKS
    		STATE:			ND
    		ZIP:			58201
    		BUSINESS PHONE:		7017953200

    	MAIL ADDRESS:
    		STREET 1:		PO BOX 6001
    		STREET 2:		401 DEMERS AVE
    		CITY:			GRAND FORKS
    		STATE:			ND
    		ZIP:			58206-6001

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FIRST NATIONAL CORP NORTH DAKOTA
    		DATE OF NAME CHANGE:	19980312
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>tmb-20220510xdef14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: tmb-20220510xdef14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>tmb-20220510xdef14a012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: tmb-20220510xdef14a012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>tmb-20220510xdef14a013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: tmb-20220510xdef14a013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>tmb-20220510xdef14a003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: tmb-20220510xdef14a003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>tmb-20220510xdef14a015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: tmb-20220510xdef14a015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>tmb-20220510xdef14a002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tmb-20220510xdef14a002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>tmb-20220510xdef14a014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: tmb-20220510xdef14a014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>tmb-20220510xdef14a001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: tmb-20220510xdef14a001.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>