<SEC-DOCUMENT>0001436126-25-000084.txt : 20250911
<SEC-HEADER>0001436126-25-000084.hdr.sgml : 20250911
<ACCEPTANCE-DATETIME>20250911165058
ACCESSION NUMBER:		0001436126-25-000084
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20250911
DATE AS OF CHANGE:		20250911

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mistras Group, Inc.
		CENTRAL INDEX KEY:			0001436126
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-ENGINEERING SERVICES [8711]
		ORGANIZATION NAME:           	07 Trade & Services
		EIN:				223341267
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-85079
		FILM NUMBER:		251309103

	BUSINESS ADDRESS:	
		STREET 1:		195 CLARKSVILLE ROAD
		CITY:			PRINCETON JUNCTION
		STATE:			NJ
		ZIP:			08550
		BUSINESS PHONE:		609-716-4000

	MAIL ADDRESS:	
		STREET 1:		195 CLARKSVILLE ROAD
		CITY:			PRINCETON JUNCTION
		STATE:			NJ
		ZIP:			08550

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Kyriakopoulos Kristy Vahaviolos
		CENTRAL INDEX KEY:			0002082695
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	MAIL ADDRESS:	
		STREET 1:		2 SUFFOLK LANE
		CITY:			PRINCETON JUNCTION
		STATE:			NJ
		ZIP:			08550
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
  <!-- Generated by Workiva -->
  <headerData>
    <submissionType>SCHEDULE 13G</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0002082695</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>Common Stock, $0.01 par value</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>07/08/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001436126</issuerCik>
        <issuerName>Mistras Group, Inc.</issuerName>
        <issuerCusip>60649T107</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>195 Clarksville Road</com:street1>
          <com:city>Princeton Junction</com:city>
          <com:stateOrCountry>NJ</com:stateOrCountry>
          <com:zipCode>08550</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(c)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Kristy Kyriakopoulos</reportingPersonName>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>1669553.00</soleVotingPower>
        <sharedVotingPower>0.00</sharedVotingPower>
        <soleDispositivePower>1669553.00</soleDispositivePower>
        <sharedDispositivePower>0.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>1669553.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>5.3</classPercent>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Mistras Group, Inc.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>195 Clarksville Road, Princeton Junction, NJ, 08550</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>Kristy Kyriakopoulos</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>c/o Stephanie Foglia, Mistras Group, 195 Clarksville Road, Princeton Junction, New Jersey 08550</principalBusinessOfficeOrResidenceAddress>
        <citizenship>United States of America</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>1,669,553.00</amountBeneficiallyOwned>
        <classPercent>5.3%*


*This percentage calculation is based on 31,538,050 outstanding shares as of August 6, 2025.</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>1,669,553.00</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>1,669,553.00</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
        <classOwnership5PercentOrLess>N</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <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 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 ?? 240.14a-11.</certifications>
      </item10>
    </items>
    <exhibitInfo>EX-24.1 Power of Attorney</exhibitInfo>
    <signatureInformation>
      <reportingPersonName>Kristy Kyriakopoulos</reportingPersonName>
      <signatureDetails>
        <signature>Kristy Kyriakopoulos</signature>
        <title>Michael C. Keefe as attorney-in-fact for Kristy Kyriakopoulos</title>
        <date>09/11/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>

</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.1
<SEQUENCE>2
<FILENAME>powerofattorneysecfilingsk.htm
<DESCRIPTION>EX-24.1
<TEXT>
<html><head>
<!-- Document created using Wdesk -->
<!-- Copyright 2025 Workiva -->
<title>Document</title></head><body><div id="ib81c7da99f7e48a98b3194e4777690c4_1"></div><div style="min-height:72pt;width:100%"><div><font><br></font></div></div><div style="margin-bottom:5pt;margin-top:5pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:700;line-height:120%">POWER OF ATTORNEY</font></div><div style="margin-bottom:5pt;margin-top:5pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">I, the undersigned, being a person required to file reports pursuant to Section&#160;16 and Section&#160;13 of the Securities Exchange Act of 1934 (&#8220;SEC Reports&#8221;) regarding the undersigned&#8217;s beneficial ownership of equity securities in Mistras&#160;Group, Inc. (the&#160;&#8220;</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%;text-decoration:underline">Company</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">&#8221;), hereby constitute and appoint each of Michael Keefe, Edward Prajzner and Michael Kozole, signing singly, as my true and lawful attorney-in-fact to&#58; </font></div><div style="padding-left:18pt;text-indent:-18pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">(1)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%;padding-left:5.18pt">Prepare, execute in my name and on my behalf, and submit to the U.S. Securities and Exchange Commission (the&#160;&#8220;</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%;text-decoration:underline">SEC</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">&#8221;) a Form&#160;ID, including amendments thereto, and any other documents necessary or appropriate to obtain codes and passwords enabling me to make electronic filings with the SEC of reports required by Sections 13 or 16 or any rule or regulation of the SEC&#59; </font></div><div><font><br></font></div><div style="padding-left:18pt;text-indent:-18pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">(2)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%;padding-left:5.18pt">execute for and on my behalf, as a Section&#160;16 reporting person of the Company, Forms 3, 4, and 5 in accordance with Section 16 and the rules thereunder, Schedule 13G or 13D in accordance with Section 13 and the rules thereunder, and any other forms or reports I may be required to file in connection with my ownership, acquisition, or disposition of securities of the Company&#59; </font></div><div><font><br></font></div><div style="padding-left:18pt;text-indent:-18pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">(3)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%;padding-left:5.18pt">do and perform any and all acts for and on my behalf which may be necessary or desirable to complete and execute any such Form&#160;3, 4, or 5, Schedule 13G or 13D, or other form or report in connection with my ownership, acquisition, or disposition of securities of the Company, and file such form or report with the SEC and any stock exchange or similar authority&#59; and</font></div><div><font><br></font></div><div style="padding-left:18pt;text-indent:-18pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">(4)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%;padding-left:5.18pt">take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be to my benefit, in my interest, or legally required by me, it being understood that the documents executed by such attorney-in-fact on my behalf pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact&#8217;s discretion.</font></div><div style="margin-bottom:5pt;margin-top:5pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">I hereby grant to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as I might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact&#8217;s substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted.  I acknowledge that the foregoing attorneys-in-fact, in serving in such capacity at my request, are not assuming, nor is the Company assuming, any of my responsibilities to comply with Sections&#160;13 or&#160;16. </font></div><div style="margin-bottom:5pt;margin-top:5pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">This Power of Attorney shall remain in full force and effect until I am no longer required to file Forms 3, 4, and 5 or Schedules 13G or 13D with respect to my holdings of and transactions in securities of the Company, unless earlier revoked by me.  By executing this Power of Attorney, I revoke all powers of attorney previously executed by me regarding the powers and authority granted in this Power of Attorney.</font></div><div style="margin-bottom:5pt;margin-top:5pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">Dated&#58;  July 31, 2025</font></div><div><font><br></font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-style:italic;font-weight:400;line-height:120%">&#47;s&#47; Kristy Kyriakopoulos</font></div><div><font style="color:#000000;font-family:'Times New Roman',serif;font-size:11pt;font-weight:400;line-height:120%">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;   Kristy Kyriakopoulos</font></div><div style="height:72pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><font><br></font></div></div></div></body></html>
</TEXT>
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</SEC-DOCUMENT>
