<?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>
          <cik>0002083033</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>Common Stock, par value $0.001 per share (the "Shares")</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>08/11/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0000862861</issuerCik>
        <issuerName>ALT5 Sigma Corp</issuerName>
        <issuerCusip>47089W104</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>325 E. Warm Springs Road</com:street1>
          <com:street2>Suite 102</com:street2>
          <com:city>Las Vegas</com:city>
          <com:stateOrCountry>NV</com:stateOrCountry>
          <com:zipCode>89119</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(c)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Soul Ventures Holdings Ltd</reportingPersonName>
      <citizenshipOrOrganization>D8</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>11333200.00</soleVotingPower>
        <sharedVotingPower>0.00</sharedVotingPower>
        <soleDispositivePower>11333200.00</soleDispositivePower>
        <sharedDispositivePower>0.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>11333200.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <classPercent>9.2</classPercent>
      <typeOfReportingPerson>OO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>ALT5 Sigma Corp</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>325 E. Warm Springs Road, Suite 102, Las Vegas, NEVADA, 89119</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>Soul Ventures Holdings Ltd </filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>Vistra Corporate Services Centre, Wickhams Cay II, Road Town, Tortola, VG1110, British Virgin Islands

This statement is filed by Soul Ventures Holdings Ltd, with respect to the portion of Common Stock held by Soul Ventures Holdings Ltd. Soul Ventures Holdings Ltd acts as the investment manager of the portfolio holdings of the fund. </principalBusinessOfficeOrResidenceAddress>
        <citizenship>British Virgin Islands</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>Soul Ventures Holdings Ltd maybe be deemed to beneficially own 11,333,200 Shares.</amountBeneficiallyOwned>
        <classPercent>The number of Shares that Soul Ventures Holdings Ltd may be deemed to beneficially own constitutes 9.2% of the Shares outstanding.</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>Soul Ventures Holdings Ltd: 11,333,200. </solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>11,333,200. Same as Item 4(a).</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>0.

The securities disclosed herein as potentially beneficially owned by Soul Ventures Holdings Ltd are held by entities subject to voting control and investment discretion by Soul Ventures Holdings Ltd and/or other investment managers that may be controlled by Soul Ventures Holdings Ltd (the managing member of Soul Ventures Holdings Ltd). The foregoing should not be construed in and of itself as an admission by Soul Ventures Holdings Ltd as to beneficial ownership of the securities held by such entities.</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 &amp;#167; 240.14a-11.

</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>Soul Ventures Holdings Ltd</reportingPersonName>
      <signatureDetails>
        <signature>Warren Hui</signature>
        <title>Director</title>
        <date>08/26/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
</edgarSubmission>