<SEC-DOCUMENT>0001949846-23-000336.txt : 20230913
<SEC-HEADER>0001949846-23-000336.hdr.sgml : 20230913
<ACCEPTANCE-DATETIME>20230913164414
ACCESSION NUMBER:		0001949846-23-000336
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20230913
DATE AS OF CHANGE:		20230913

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MESA LABORATORIES INC /CO/
		CENTRAL INDEX KEY:			0000724004
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				840872291
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	000-11740
		FILM NUMBER:		231253201

	BUSINESS ADDRESS:	
		STREET 1:		12100 W 6TH AVE
		CITY:			LAKEWOOD
		STATE:			CO
		ZIP:			80228
		BUSINESS PHONE:		3039878000

	MAIL ADDRESS:	
		STREET 1:		12100 W 6TH AVE
		CITY:			LAKEWOOD
		STATE:			CO
		ZIP:			80228

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MESA LABORATORIES INC /CO
		DATE OF NAME CHANGE:	19951117

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MESA MEDICAL INC
		DATE OF NAME CHANGE:	19921123

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Schmieder John Bradley
		CENTRAL INDEX KEY:			0001637852

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O MESA LABORATORIES, INC.
		STREET 2:		12100 W. 6TH AVENUE
		CITY:			LAKEWOOD
		STATE:			CO
		ZIP:			80228
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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    <submissionType>144</submissionType>
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      <filer>
        <filerCredentials>
          <cik>0001637852</cik>
          <ccc>XXXXXXXX</ccc>
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      <liveTestFlag>LIVE</liveTestFlag>


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    <issuerInfo>
      <issuerCik>0000724004</issuerCik>
      <issuerName>MESA LABORATORIES INC /CO/</issuerName>
      <secFileNumber>000-11740</secFileNumber>
      <issuerAddress>
        <com:street1>12100 W 6TH AVE</com:street1>
        <com:city>LAKEWOOD</com:city>
        <com:stateOrCountry>CO</com:stateOrCountry>
        <com:zipCode>80228</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>3039878000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Schmieder John Bradley</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>THE CHARLES SCHWAB CORPORATION</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>7000</noOfUnitsSold>
      <aggregateMarketValue>859039.00</aggregateMarketValue>
      <noOfUnitsOutstanding>5384291</noOfUnitsOutstanding>
      <approxSaleDate>09/13/2023</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>12/10/2021</acquiredDate>
      <natureOfAcquisitionTransaction>INHERITANCE</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>FROM FATHER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>7000</amountOfSecuritiesAcquired>
      <paymentDate>12/10/2021</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>FULL ACCOUNT TITLE: J SCHMIEDER &amp; L BURTON TTEE JOHN B SCHMIEDER IRRV TR</remarks>
    <noticeSignature>
      <noticeDate>09/13/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>06/14/2023</planAdoptionDate>
      </planAdoptionDates>
      <signature>JOHN B SCHMIEDER</signature>
    </noticeSignature>
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