    <SEC-DOCUMENT>0001140361-22-025581-index.html : 20220708
    <SEC-HEADER>0001140361-22-025581.hdr.sgml : 20220708
    <ACCEPTANCE-DATETIME>20220708142033
    ACCESSION NUMBER:		0001140361-22-025581
    CONFORMED SUBMISSION TYPE:	PRE 14A
    PUBLIC DOCUMENT COUNT:		8
    CONFORMED PERIOD OF REPORT:	20220719
    FILED AS OF DATE:		20220708
    DATE AS OF CHANGE:		20220708

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Proto Labs Inc
    		CENTRAL INDEX KEY:			0001443669
    		STANDARD INDUSTRIAL CLASSIFICATION:	FABRICATED STRUCTURAL METAL PRODUCTS [3440]
    		IRS NUMBER:				000000000
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		PRE 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35435
    		FILM NUMBER:		221074005

    	BUSINESS ADDRESS:
    		STREET 1:		5540 Pioneer Creek
    		CITY:			Maple Plain
    		STATE:			MN
    		ZIP:			55359
    		BUSINESS PHONE:		763-479-7474

    	MAIL ADDRESS:
    		STREET 1:		5540 Pioneer Creek
    		CITY:			Maple Plain
    		STATE:			MN
    		ZIP:			55359
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>PRE 14A
    <SEQUENCE>1
    <FILENAME>ny20004439x1_pre14a.htm
    <DESCRIPTION>PRE14A
    <TEXT>
    Document 1 - file: ny20004439x1_pre14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>logo_protolabs.jpg
    <TEXT>
    Document 2 - file: logo_protolabs.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>ny20004439x1-pc_1.jpg
    <TEXT>
    Document 3 - file: ny20004439x1-pc_1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>ny20004439x1-pc_2.jpg
    <TEXT>
    Document 4 - file: ny20004439x1-pc_2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>ny20004439x1_barchart1.jpg
    <TEXT>
    Document 5 - file: ny20004439x1_barchart1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>sig_ablack.jpg
    <TEXT>
    Document 6 - file: sig_ablack.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>sig_jasonfrankman.jpg
    <TEXT>
    Document 7 - file: sig_jasonfrankman.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>sig_jasonfrankmanx1.jpg
    <TEXT>
    Document 8 - file: sig_jasonfrankmanx1.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>