<SEC-DOCUMENT>0001050442-25-000027.txt : 20250814
<SEC-HEADER>0001050442-25-000027.hdr.sgml : 20250814
<ACCEPTANCE-DATETIME>20250814192557
ACCESSION NUMBER:		0001050442-25-000027
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250814
DATE AS OF CHANGE:		20250814

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Proto Labs Inc
		CENTRAL INDEX KEY:			0001443669
		STANDARD INDUSTRIAL CLASSIFICATION:	FABRICATED STRUCTURAL METAL PRODUCTS [3440]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				000000000
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-87297
		FILM NUMBER:		251221903

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DISCIPLINED GROWTH INVESTORS INC /MN
		CENTRAL INDEX KEY:			0001050442
		ORGANIZATION NAME:           	
		EIN:				411901233
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		150 S 5TH ST
		STREET 2:		SUITE 2550
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402
		BUSINESS PHONE:		6123174100

	MAIL ADDRESS:	
		STREET 1:		150 S. FIFTH ST
		STREET 2:		SUITE 2550
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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    <submissionType>SCHEDULE 13G/A</submissionType>
    <previousAccessionNumber>0001050442-22-000009</previousAccessionNumber>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001050442</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
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      <liveTestFlag>LIVE</liveTestFlag>


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  </headerData>
  <formData>
    <coverPageHeader>
      <amendmentNo>6</amendmentNo>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>06/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001443669</issuerCik>
        <issuerName>Proto Labs Inc</issuerName>
        <issuerCusip>743713109</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>5540 Pioneer Creek</com:street1>
          <com:street2>5540 Pioneer Creek</com:street2>
          <com:city>Maple Plain</com:city>
          <com:stateOrCountry>MN</com:stateOrCountry>
          <com:zipCode>55359</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
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      <reportingPersonName>DISCIPLINED GROWTH INVESTORS INC /MN</reportingPersonName>
      <citizenshipOrOrganization>MN</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>2446527.00</soleVotingPower>
        <sharedVotingPower>0.00</sharedVotingPower>
        <soleDispositivePower>2722011.00</soleDispositivePower>
        <sharedDispositivePower>0.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>2722011.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <classPercent>11.4</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
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      <item1>
        <issuerName>Proto Labs Inc</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>5540 Pioneer Creek, 5540 Pioneer Creek, Maple Plain, MINNESOTA, 55359.</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>Disciplined Growth Investors, Inc.</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>150 South Fifth Street
Suite 2550
Minneapolis, MN 55402</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Minnesota, US</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>IA</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>2,722,011</amountBeneficiallyOwned>
        <classPercent>11.4</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>2,446,527</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>2,722,011</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
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      <item6>
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        <notApplicableFlag>Y</notApplicableFlag>
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      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under &amp;#167; 240.14a-11.

</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>DISCIPLINED GROWTH INVESTORS INC /MN</reportingPersonName>
      <signatureDetails>
        <signature>Peter G. Rieke</signature>
        <title>Chief Compliance Officer</title>
        <date>08/14/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
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</TEXT>
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</SEC-DOCUMENT>
