<SEC-DOCUMENT>0000950123-23-010376.txt : 20231114
<SEC-HEADER>0000950123-23-010376.hdr.sgml : 20231114
<ACCEPTANCE-DATETIME>20231114061605
ACCESSION NUMBER:		0000950123-23-010376
CONFORMED SUBMISSION TYPE:	13F-HR
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20230930
FILED AS OF DATE:		20231114
DATE AS OF CHANGE:		20231114
EFFECTIVENESS DATE:		20231114

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HOWARD HUGHES MEDICAL INSTITUTE
		CENTRAL INDEX KEY:			0000810386
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0831

	FILING VALUES:
		FORM TYPE:		13F-HR
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-01897
		FILM NUMBER:		231401413

	BUSINESS ADDRESS:	
		STREET 1:		4000 JONES BRIDGE ROAD
		CITY:			CHEVY CHASE
		STATE:			MD
		ZIP:			20815-6789
		BUSINESS PHONE:		3012158500

	MAIL ADDRESS:	
		STREET 1:		4000 JONES BRIDGE ROAD
		CITY:			CHEVY CHASE
		STATE:			MD
		ZIP:			20815-6789

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HUGHES HOWARD MEDICAL INSTITUTE
		DATE OF NAME CHANGE:	19930603
</SEC-HEADER>
<DOCUMENT>
<TYPE>13F-HR
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xsi:schemaLocation="http://www.sec.gov/edgar/thirteenffiler eis_13F_Filer.xsd" xmlns:ns1="http://www.sec.gov/edgar/common" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.sec.gov/edgar/thirteenffiler">
  <schemaVersion>X0202</schemaVersion>
  <headerData>
    <submissionType>13F-HR</submissionType>
    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <flags/>
      <filer>
        <credentials>
          <cik>0000810386</cik>
          <ccc>XXXXXXXX</ccc>
        </credentials>
      </filer>
      <periodOfReport>09-30-2023</periodOfReport>
    </filerInfo>
  </headerData>
  <formData>
    <coverPage>
      <reportCalendarOrQuarter>09-30-2023</reportCalendarOrQuarter>
      <isAmendment>false</isAmendment>
      <filingManager>
        <name>Howard Hughes Medical Institute</name>
        <address>
          <ns1:street1>4000 Jones Bridge Road</ns1:street1>
          <ns1:city>Chevy Chase</ns1:city>
          <ns1:stateOrCountry>MD</ns1:stateOrCountry>
          <ns1:zipCode>20815-6789</ns1:zipCode>
        </address>
      </filingManager>
      <reportType>13F HOLDINGS REPORT</reportType>
      <form13FFileNumber>028-01897</form13FFileNumber>
      <provideInfoForInstruction5>N</provideInfoForInstruction5>
    </coverPage>
    <signatureBlock>
      <name>Donald L. Koch</name>
      <title>Vice President &amp; Chief Investment Officer</title>
      <phone>301-215-8679</phone>
      <signature>/s/ Donald L. Koch</signature>
      <city>Chevy Chase</city>
      <stateOrCountry>MD</stateOrCountry>
      <signatureDate>11-14-2023</signatureDate>
    </signatureBlock>
    <summaryPage>
      <otherIncludedManagersCount>0</otherIncludedManagersCount>
      <tableEntryTotal>2</tableEntryTotal>
      <tableValueTotal>19582909</tableValueTotal>
      <isConfidentialOmitted>false</isConfidentialOmitted>
    </summaryPage>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>INFORMATION TABLE
<SEQUENCE>2
<FILENAME>27601.xml
<DESCRIPTION>INFORMATION TABLE FOR FORM 13F
<TEXT>
<XML>
<informationTable xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable">
  <infoTable>
    <nameOfIssuer>DYNATRACE INC</nameOfIssuer>
    <titleOfClass>COM NEW</titleOfClass>
    <cusip>268150109</cusip>
    <value>15420900</value>
    <shrsOrPrnAmt>
      <sshPrnamt>330000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>330000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>PURECYCLE TECHNOLOGIES INC</nameOfIssuer>
    <titleOfClass>COM</titleOfClass>
    <cusip>74623V103</cusip>
    <value>4162009</value>
    <shrsOrPrnAmt>
      <sshPrnamt>741891</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>741891</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
</informationTable>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>