<SEC-DOCUMENT>0001213900-25-110803.txt : 20251114
<SEC-HEADER>0001213900-25-110803.hdr.sgml : 20251114
<ACCEPTANCE-DATETIME>20251114160003
ACCESSION NUMBER:		0001213900-25-110803
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251114
DATE AS OF CHANGE:		20251114

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HCM III ACQUISITION CORP.
		CENTRAL INDEX KEY:			0002069856
		STANDARD INDUSTRIAL CLASSIFICATION:	BLANK CHECKS [6770]
		ORGANIZATION NAME:           	05 Real Estate & Construction
		EIN:				981854444
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-95148
		FILM NUMBER:		251485397

	BUSINESS ADDRESS:	
		STREET 1:		100 FIRST STAMFORD PLACE, #330
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			03902
		BUSINESS PHONE:		203-930-2200

	MAIL ADDRESS:	
		STREET 1:		100 FIRST STAMFORD PLACE, #330
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			03902

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HCM INVESTOR HOLDINGS III, LLC
		CENTRAL INDEX KEY:			0002069862
		ORGANIZATION NAME:           	
		EIN:				981854504
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	BUSINESS ADDRESS:	
		STREET 1:		100 FIRST STAMFORD PLACE, #330
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			06902
		BUSINESS PHONE:		203-930-2200

	MAIL ADDRESS:	
		STREET 1:		100 FIRST STAMFORD PLACE, #330
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			06902
</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">
  <headerData>
    <submissionType>SCHEDULE 13G</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <!-- Field: Pseudo-Tag; ID: Name; Data: HCM INVESTOR HOLDINGS III, LLC -->
          <cik>0002069862</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>Class A ordinary shares, par value $0.0001 per share</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>08/04/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0002069856</issuerCik>
        <issuerName>HCM III Acquisition Corp.</issuerName>
        <issuerCusip>G4365E103</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>100 First Stamford Place, Suite 330</com:street1>
          <com:city>Stamford</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06902</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(d)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>HCM Investor Holdings III, LLC</reportingPersonName>
      <citizenshipOrOrganization>E9</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>8433333.00</soleVotingPower>
        <sharedVotingPower>0.00</sharedVotingPower>
        <soleDispositivePower>8433333.00</soleDispositivePower>
        <sharedDispositivePower>0.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>8433333.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>25</classPercent>
      <typeOfReportingPerson>OO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Shawn Matthews</reportingPersonName>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>8433333.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>8433333.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>8433333.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>25</classPercent>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
      <comments>(1) See Item 4. Represents Class B ordinary shares, which will automatically convert into the Issuer's Class A ordinary shares at the time of the Issuer's initial business combination, as more fully described under the heading "Description of Securities" in the Issuer's registration statement on Form S-1 (File No. 333-287841).

(2) Based on 33,733,333 ordinary shares issued and outstanding as reported in the Issuer's prospectus filed with the Securities and Exchange Commission on July 31, 2025 and assuming the conversion of all the Class B ordinary shares held by HCM Investor Holdings III, LLC.</comments>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>HCM III Acquisition Corp.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>100 First Stamford Place, Suite 330 Stamford, CT 06902</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>HCM Investor Holdings III, LLC and Shawn Matthews (the "Reporting Persons")</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>100 First Stamford Place, Suite 330  Stamford, CT 06902</principalBusinessOfficeOrResidenceAddress>
        <citizenship>HCM Investor Holdings III, LLC is a limited liability company formed under the laws of the Cayman Islands. Shawn Matthews is a citizen of the United States of America.</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>The responses to Items 5-11 of the cover pages of this Schedule 13G are incorporated herein by reference.</amountBeneficiallyOwned>
        <classPercent>As of August 4, 2025, the Reporting Persons may be deemed to beneficially own 8,433,333 of the Issuer's Class B ordinary shares, representing 25% of the total ordinary shares issued and outstanding and assuming the conversion of all the Class B ordinary shares of the Reporting Persons.</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>The Class B ordinary shares are automatically convertible into the Issuer's Class A ordinary shares at the time of the Issuer's initial business combination on a one-for-one basis, subject to adjustment, as more fully described under the heading "Description of Securities" in the Issuer's registration statement on Form S-1 (File No. 333-287841).</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>The percentage of the Class B ordinary shares held by the Reporting Persons is based on 33,733,333 ordinary shares issued and outstanding as reported in the Issuer's prospectus filed with the Securities and Exchange Commission on July 31, 2025 and assuming the conversion of all the Class B ordinary shares held by HCM Investor Holdings III, LLC.</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>HCM Investor Holdings III, LLC is the record holder of the shares reported herein.</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>Shawn Matthews is the managing member of HCM Investor Holdings III, LLC. Consequently, he may be deemed the beneficial owner of the shares held by HCM Investor Holdings III, LLC and has voting and dispositive control over such securities.</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>Y</notApplicableFlag>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>HCM Investor Holdings III, LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Shawn Matthews</signature>
        <title>Shawn Matthews, Managing Member</title>
        <date>11/14/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Shawn Matthews</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Shawn Matthews</signature>
        <title>Shawn Matthews</title>
        <date>11/14/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
</edgarSubmission>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
