    <SEC-DOCUMENT>0001437749-19-006638-index.html : 20190405
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    <ACCEPTANCE-DATETIME>20190405102008
    ACCESSION NUMBER:		0001437749-19-006638
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		10
    CONFORMED PERIOD OF REPORT:	20190515
    FILED AS OF DATE:		20190405
    DATE AS OF CHANGE:		20190405
    EFFECTIVENESS DATE:		20190405

    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:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35435
    		FILM NUMBER:		19733735

    	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>
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    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>prlb20190322_def14a.htm
    <DESCRIPTION>FORM DEF 14A
    <TEXT>
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    <TEXT>
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    <SEQUENCE>4
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    <TEXT>
    Document 4 - file: n2.jpg

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    <SEQUENCE>5
    <FILENAME>n1.jpg
    <TEXT>
    Document 5 - file: n1.jpg

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    <SEQUENCE>9
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    <TEXT>
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    <SEQUENCE>10
    <FILENAME>prlb20190322_def14aimg001.jpg
    <TEXT>
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