﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2023v6.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-11-07T09:47:42-06:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>410746749</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>CLIFTONLARSONALLEN LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>950 NORTH GLEBE ROAD SUITE 1200</AddressLine1Txt>
        <CityNm>ARLINGTON</CityNm>
        <StateAbbreviationCd>VA</StateAbbreviationCd>
        <ZIPCd>22203</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-10-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>562390650</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>LSST INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>LSST</BusinessNameControlTxt>
      <PhoneNum>5203958601</PhoneNum>
      <USAddress>
        <AddressLine1Txt>933 N CHERRY AVE</AddressLine1Txt>
        <CityNm>TUCSON</CityNm>
        <StateAbbreviationCd>AZ</StateAbbreviationCd>
        <ZIPCd>85721</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>MICHAEL WOOD-VASEY</PersonNm>
      <PersonTitleTxt>CHAIR OF THE BOARD</PersonTitleTxt>
      <PhoneNum>5203958601</PhoneNum>
      <SignatureDt>2025-11-06</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>0</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>ROBERT WILLIAMS</PreparerPersonNm>
      <PTIN>P01345960</PTIN>
      <PhoneNum>5712279500</PhoneNum>
      <PreparationDt>2025-11-05</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="8">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001" accountingPeriodChangeCd="CHANGE OF ACCOUNTING PERIOD" accountingPeriodChangeApprvCd="REVENUE PROCEDURE 85-58 RULES APPLY">
      <DoingBusinessAsName>
        <BusinessNameLine1Txt>LSST DISCOVERY ALLIANCE</BusinessNameLine1Txt>
      </DoingBusinessAsName>
      <PrincipalOfficerNm>BETH WILLMAN</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>933 N CHERRY AVE</AddressLine1Txt>
        <CityNm>TUCSON</CityNm>
        <StateAbbreviationCd>AZ</StateAbbreviationCd>
        <ZIPCd>85721</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>642971</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>HTTPS://LSSTDISCOVERYALLIANCE.ORG/</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>2003</FormationYr>
      <LegalDomicileStateCd>AZ</LegalDomicileStateCd>
      <ActivityOrMissionDesc>TO ENHANCE RUBIN LSST DISCOVERY THROUGH ADVANCED DATA TOOLS, TRAINING, AND INCLUSIVE COLLABORATIONS FOR LSST RESEARCHERS</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>11</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>11</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <TotalVolunteersCnt>11</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>2868567</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>617775</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>0</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>0</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>96135</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>25196</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>0</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>0</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>2964702</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>642971</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>1406724</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>503849</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>0</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>143522</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>6679</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>13380</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>1029953</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>121350</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>2443356</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>768721</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>521346</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>-125750</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>7443525</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>6459038</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>5164480</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>4305743</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>2279045</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>2153295</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>TO ENHANCE RUBIN LSST DISCOVERY THROUGH ADVANCED DATA TOOLS, TRAINING, AND INCLUSIVE COLLABORATIONS FOR LSST RESEARCHERS SO THAT ANY SCIENTIST WITH A GOOD QUESTION FOR THE LSST SURVEY CAN ENGAGE WITH THESE ADVANCED RESOURCES TO REVEAL THE MYSTERIES OF THE UNIVERSE.</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>508820</ExpenseAmt>
      <GrantAmt>417595</GrantAmt>
      <RevenueAmt>590092</RevenueAmt>
      <Desc>THE TEMPLETON PROGRAM SUPPORTS OUTSTANDING EARLY-CAREER RESEARCHERS WHO ARE CONDUCTING CUTTING-EDGE SCIENTIFIC INVESTIGATIONS AND ACTIVELY CONTRIBUTING TO THE LONG-TERM STRENGTH OF THE FIELD. THESE SCIENTISTS, KNOWN AS CATALYST FELLOWS, RECEIVE STRUCTURED SUPPORT TO BUILD RESEARCH NETWORKS, DEVELOP CROSS-DISCIPLINARY SKILLS, AND ADOPT PRACTICES THAT ADVANCE DATA-INTENSIVE SCIENCE. THE PROGRAM PROMOTES NEW DISCOVERIES AND PROFESSIONAL GROWTH IN BOTH ASTROPHYSICS AND SOCIAL SCIENCE THAT ADVANCE THE PROMISE OF THE RUBIN OBSERVATORY'S LEGACY SURVEY OF SPACE AND TIME (LSST).</Desc>
      <ProgSrvcAccomActy2Grp>
        <ExpenseAmt>38300</ExpenseAmt>
        <GrantAmt>22007</GrantAmt>
        <RevenueAmt>0</RevenueAmt>
        <Desc>THE LSST INTERDISCIPLINARY NETWORK FOR COLLABORATION AND COMPUTING (LINCC) FRAMEWORKS PROGRAM, SUPPORTED BY SCHMIDT SCIENCES, IS AN AMBITIOUS PROGRAM TO DEVELOP STATE-OF-THE-ART DATA ANALYSIS TECHNIQUES CAPABLE OF MEETING THE SCALE AND COMPLEXITY OF THE DATA PRODUCED BY THE RUBIN OBSERVATORY LEGACY SURVEY OF SPACE AND TIME (RUBIN LSST) DATA.</Desc>
      </ProgSrvcAccomActy2Grp>
      <ProgSrvcAccomActy3Grp>
        <ExpenseAmt>67076</ExpenseAmt>
        <GrantAmt>60500</GrantAmt>
        <RevenueAmt>8943</RevenueAmt>
        <Desc>THE INCLUSIVE COLLABORATION PROGRAMS, SUPPORTED BY THE HEISING-SIMONS FOUNDATION, BUILD BEST PRACTICES FOR EQUITABLE SCIENTIFIC ENGAGEMENT IN THE LSST DISCOVERY ALLIANCE COMMUNITY. THESE PROGRAMS MODEL AND TEST POLICIES AND ORGANIZATIONAL STRUCTURES THAT PROMOTE BROAD INCLUSION AND ENGAGE SCIENTISTS PRACTICES AND STRUCTURES THAT FOSTER INCLUSION. PROGRAM ACTIVITIES INCLUDE TRAINING IN SOFTWARE DEVELOPMENT AND IN MENTORING, KEY ACTIVITIES WHICH BUILD AND FOSTER BROAD ENGAGEMENT IN LSST SCIENCE AND BEYOND.</Desc>
      </ProgSrvcAccomActy3Grp>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>7834</ExpenseAmt>
        <GrantAmt>7275</GrantAmt>
        <RevenueAmt>0</RevenueAmt>
        <Desc>HEISING-SIMONS CHILDCARE SUPPORT</Desc>
      </ProgSrvcAccomActyOtherGrp>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>5331</ExpenseAmt>
        <GrantAmt>-3528</GrantAmt>
        <RevenueAmt>18650</RevenueAmt>
        <Desc>ALL OTHER PROGRAMS:NEGATIVE AMOUNT IN GRANTS REFLECTS FUNDS RETURNED BY GRANTEES DURING THE PERIOD.</Desc>
      </ProgSrvcAccomActyOtherGrp>
      <TotalOtherProgSrvcExpenseAmt>13165</TotalOtherProgSrvcExpenseAmt>
      <TotalOtherProgSrvcGrantAmt>3747</TotalOtherProgSrvcGrantAmt>
      <TotalOtherProgSrvcRevenueAmt>18650</TotalOtherProgSrvcRevenueAmt>
      <TotalProgramServiceExpensesAmt>627361</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc1039100001">1</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="RetDoc1234500001">1</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc1040000001">0</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc1040000001">0</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc1040000001">0</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc1040000001">0</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd>0</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc1040000001">0</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc1040000001">0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc1040000001">0</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc1040000001">0</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc1040000001">1</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc1040000001">0</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd referenceDocumentId="RetDoc1040500001">1</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd referenceDocumentId="RetDoc1040500001">1</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd referenceDocumentId="RetDoc1040500001">0</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>0</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd referenceDocumentId="RetDoc1041900001">1</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd referenceDocumentId="RetDoc1041900001">1</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="RetDoc1042400001">1</ScheduleJRequiredInd>
      <TaxExemptBondsInd>0</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>0</PYExcessBenefitTransInd>
      <LoanOutstandingInd>0</LoanOutstandingInd>
      <GrantToRelatedPersonInd>0</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>0</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>0</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>0</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>0</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>0</DeductibleArtContributionInd>
      <TerminateOperationsInd>0</TerminateOperationsInd>
      <PartialLiquidationInd>0</PartialLiquidationInd>
      <DisregardedEntityInd>0</DisregardedEntityInd>
      <RelatedEntityInd>0</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>0</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <IRPDocumentCnt>0</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <EmployeeCnt>0</EmployeeCnt>
      <UnrelatedBusIncmOverLimitInd>0</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>0</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>0</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>0</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>0</Form8282PropertyDisposedOfInd>
      <RcvFndsToPayPrsnlBnftCntrctInd>0</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>0</PayPremiumsPrsnlBnftCntrctInd>
      <IndoorTanningServicesInd>0</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>0</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>11</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>11</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>0</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>0</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>0</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>0</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>1</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>1</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>0</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>1</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>0</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>0</OfficerMailingAddressInd>
      <LocalChaptersInd>0</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>0</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>1</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>1</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>1</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>1</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>1</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>0</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>0</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>AZ</StatesWhereCopyOfReturnIsFldCd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>ELIZABETH HEILE</BusinessNameLine1Txt>
        </BusinessName>
        <PhoneNum>5203958601</PhoneNum>
        <USAddress>
          <AddressLine1Txt>933 N CHERRY AVE</AddressLine1Txt>
          <CityNm>TUCSON</CityNm>
          <StateAbbreviationCd>AZ</StateAbbreviationCd>
          <ZIPCd>85721</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <PersonNm>LARRY GLADNEY</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL WOOD-VASEY</PersonNm>
        <TitleTxt>CHAIR</TitleTxt>
        <AverageHoursPerWeekRt>4.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KATHRYN JOHNSTON</PersonNm>
        <TitleTxt>VICE CHAIR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROSARIA BONITO</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>WILL CLARKSON</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JAMES DAVENPORT</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BUELL JANNUZI</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DAVID MACFARLANE</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KNUT OLSEN</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>IAN SHIPSEY</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RISA WECHSLER</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BETH WILLMAN</PersonNm>
        <TitleTxt>CEO</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>187695</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>36506</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DANIEL CALABBRESE</PersonNm>
        <TitleTxt>CORPORATE SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>4.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>14225</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>201920</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>36506</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>1</CompensationFromOtherSrcsInd>
      <CntrctRcvdGreaterThan100KCnt>0</CntrctRcvdGreaterThan100KCnt>
      <AllOtherContributionsAmt>617775</AllOtherContributionsAmt>
      <TotalContributionsAmt>617775</TotalContributionsAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>25196</TotalRevenueColumnAmt>
        <ExclusionAmt>25196</ExclusionAmt>
      </InvestmentIncomeGrp>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>642971</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>25196</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>493327</TotalAmt>
        <ProgramServicesAmt>493327</ProgramServicesAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>10522</TotalAmt>
        <ProgramServicesAmt>10522</ProgramServicesAmt>
      </GrantsToDomesticIndividualsGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>64850</TotalAmt>
        <ProgramServicesAmt>25940</ProgramServicesAmt>
        <ManagementAndGeneralAmt>25940</ManagementAndGeneralAmt>
        <FundraisingAmt>12970</FundraisingAmt>
      </CompCurrentOfcrDirectorsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>60961</TotalAmt>
        <ProgramServicesAmt>23531</ProgramServicesAmt>
        <ManagementAndGeneralAmt>37430</ManagementAndGeneralAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>5992</TotalAmt>
        <ProgramServicesAmt>2322</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3670</ManagementAndGeneralAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>5426</TotalAmt>
        <ProgramServicesAmt>2104</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3322</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>6293</TotalAmt>
        <ProgramServicesAmt>2418</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3875</ManagementAndGeneralAmt>
      </PayrollTaxesGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>27560</TotalAmt>
        <ManagementAndGeneralAmt>27560</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>33523</TotalAmt>
        <ProgramServicesAmt>29323</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4200</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>167</TotalAmt>
        <ManagementAndGeneralAmt>167</ManagementAndGeneralAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>3818</TotalAmt>
        <ProgramServicesAmt>2560</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1241</ManagementAndGeneralAmt>
        <FundraisingAmt>17</FundraisingAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>4352</TotalAmt>
        <ProgramServicesAmt>814</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3313</ManagementAndGeneralAmt>
        <FundraisingAmt>225</FundraisingAmt>
      </InformationTechnologyGrp>
      <TravelGrp>
        <TotalAmt>34578</TotalAmt>
        <ProgramServicesAmt>26823</ProgramServicesAmt>
        <ManagementAndGeneralAmt>7755</ManagementAndGeneralAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>15422</TotalAmt>
        <ProgramServicesAmt>7194</ProgramServicesAmt>
        <ManagementAndGeneralAmt>8228</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>1120</TotalAmt>
        <ProgramServicesAmt>382</ProgramServicesAmt>
        <ManagementAndGeneralAmt>570</ManagementAndGeneralAmt>
        <FundraisingAmt>168</FundraisingAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>709</TotalAmt>
        <ManagementAndGeneralAmt>709</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>101</TotalAmt>
        <ProgramServicesAmt>101</ProgramServicesAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>768721</TotalAmt>
        <ProgramServicesAmt>627361</ProgramServicesAmt>
        <ManagementAndGeneralAmt>127980</ManagementAndGeneralAmt>
        <FundraisingAmt>13380</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>29</BOYAmt>
        <EOYAmt>29</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>5793767</BOYAmt>
        <EOYAmt>5103254</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>730984</BOYAmt>
        <EOYAmt>186391</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <AccountsReceivableGrp>
        <EOYAmt>45960</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>891987</BOYAmt>
        <EOYAmt>1085002</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>26758</BOYAmt>
        <EOYAmt>38402</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>7443525</BOYAmt>
        <EOYAmt>6459038</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>367680</BOYAmt>
        <EOYAmt>233126</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <GrantsPayableGrp>
        <BOYAmt>280119</BOYAmt>
        <EOYAmt>146028</EOYAmt>
      </GrantsPayableGrp>
      <DeferredRevenueGrp>
        <BOYAmt>3499720</BOYAmt>
        <EOYAmt>2909628</EOYAmt>
      </DeferredRevenueGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>1016961</BOYAmt>
        <EOYAmt>1016961</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>5164480</BOYAmt>
        <EOYAmt>4305743</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>1523889</BOYAmt>
        <EOYAmt>1422163</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>755156</BOYAmt>
        <EOYAmt>731132</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>2279045</BOYAmt>
        <EOYAmt>2153295</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>7443525</BOYAmt>
        <EOYAmt>6459038</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-125750</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>0</FSAuditedInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>1096860</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1051594</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>908288</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2868567</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>617775</CurrentTaxYearAmt>
        <TotalAmt>6543084</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>1096860</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1051594</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>908288</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2868567</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>617775</CurrentTaxYearAmt>
        <TotalAmt>6543084</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>2940539</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>3602545</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus3YearsAmt>7</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>9586</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>96135</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>25196</CurrentTaxYearAmt>
        <TotalAmt>130924</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>6674008</TotalSupportAmt>
      <PublicSupportCY170Pct>0.53980</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.61150</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART II, SHORT YEAR EXPLANATION:</FormAndLineReferenceDesc>
        <ExplanationTxt>COLUMN E REPRESENTS A SHORT YEAR REPORTING PERIOD OF 10/1/2023 THROUGH 12/31/2023 DUE TO A CHANGE IN FISCAL YEAR END.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>INTERNATIONAL AFFILIATES - USAGE FEES PAYABLE</Desc>
        <Amt>1016961</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>1016961</TotalLiabilityAmt>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="RetDoc1040500001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>COLLABORATIVE SCIENCE AND STUDENT TRAVEL INITIATIVES</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>113899</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>TRAVEL AND CHILDCARE SUPPORT FOR SCIENTIFIC MEETINGS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>5000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>118899</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>118899</TotalSpentAmt>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <PurposeOfGrantTxt>HEISING-SIMONS INCLUSIVE COLLABORATION</PurposeOfGrantTxt>
        <CashGrantAmt>13000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS FOR EARLY-CAREER POSTDOC SCIENTISTS</PurposeOfGrantTxt>
        <CashGrantAmt>26265</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS FOR EARLY-CAREER POSTDOC SCIENTISTS</PurposeOfGrantTxt>
        <CashGrantAmt>27182</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <PurposeOfGrantTxt>HEISING-SIMONS INCLUSIVE COLLABORATION</PurposeOfGrantTxt>
        <CashGrantAmt>7500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS FOR EARLY-CAREER POSTDOC SCIENTISTS</PurposeOfGrantTxt>
        <CashGrantAmt>15085</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <PurposeOfGrantTxt>SCHMIDT SCIENCES SUPPORTS EARLY-CAREER SCIENTISTS BUILDING LSST SOFTWARE TOOLS</PurposeOfGrantTxt>
        <CashGrantAmt>22007</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <Total501c3OrgCnt>2</Total501c3OrgCnt>
      <TotalOtherOrgCnt>4</TotalOtherOrgCnt>
      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>LSST DISCOVERY ALLIANCE MAINTAINS ACTIVE OVERSIGHT THROUGHOUT THE LIFE OF EACH GRANT, INCLUDING CLEAR REPORTING EXPECTATIONS AND ONGOING REVIEW OF FUND USE. THIS MONITORING REINFORCES ACCOUNTABILITY, SUPPORTS ALIGNMENT WITH GRANT OBJECTIVES, AND HELPS ENSURE FUNDS ARE APPLIED EFFECTIVELY AND IN ACCORDANCE WITH PROGRAM GOALS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF ARIZONA</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1200E UNIVERSITY BLVD</AddressLine1Txt>
          <CityNm>TUCSON</CityNm>
          <StateAbbreviationCd>AZ</StateAbbreviationCd>
          <ZIPCd>85721</ZIPCd>
        </USAddress>
        <RecipientEIN>742652689</RecipientEIN>
        <IRCSectionDesc>GOVERNMENT ENTITY</IRCSectionDesc>
        <CashGrantAmt>70032</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>POSTDOC RESEARCH RUBIN LSST TEMPLETON FELLOWS INCLUSIVE SCIENCE EFFORT HEISING-SIMONS GRANT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF WASHINGTON</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1400 NE CAMPUS PARKWAY</AddressLine1Txt>
          <CityNm>SEATTLE</CityNm>
          <StateAbbreviationCd>WA</StateAbbreviationCd>
          <ZIPCd>98195</ZIPCd>
        </USAddress>
        <RecipientEIN>916001537</RecipientEIN>
        <IRCSectionDesc>GOVERNMENT ENTITY</IRCSectionDesc>
        <CashGrantAmt>40860</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS SUPPORTING POSTDOCTORAL RESEARCH USING RUBIN LSST DATA</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>RESEARCH FOUNDATION OF THE CITY UNIVERSITY OF NEW YORK</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>230 W 41ST ST</AddressLine1Txt>
          <CityNm>NEW YORK CITY</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10036</ZIPCd>
        </USAddress>
        <RecipientEIN>131988190</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>35645</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS SUPPORTING POSTDOCTORAL RESEARCH USING RUBIN LSST DATA</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>WASHINGTON STATE UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>370 LIGHTY STUDENT SERVICES BLDG</AddressLine1Txt>
          <CityNm>PULLMAN</CityNm>
          <StateAbbreviationCd>WA</StateAbbreviationCd>
          <ZIPCd>99164</ZIPCd>
        </USAddress>
        <RecipientEIN>916001108</RecipientEIN>
        <IRCSectionDesc>GOVERNMENT ENTITY</IRCSectionDesc>
        <CashGrantAmt>34682</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS SUPPORTING POSTDOCTORAL RESEARCH USING RUBIN LSST DATA</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>RUTGERS UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>77 HAMILTON STREET</AddressLine1Txt>
          <CityNm>NEW BRUNSWICK</CityNm>
          <StateAbbreviationCd>NJ</StateAbbreviationCd>
          <ZIPCd>08901</ZIPCd>
        </USAddress>
        <RecipientEIN>237318742</RecipientEIN>
        <IRCSectionDesc>GOVERNMENT ENTITY</IRCSectionDesc>
        <CashGrantAmt>32183</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS SUPPORTING POSTDOCTORAL RESEARCH USING RUBIN LSST DATA</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>LAS CUMBRES OBSERVATORY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>6740 CORTONA DR SUITE 102</AddressLine1Txt>
          <CityNm>GOLETA</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>93117</ZIPCd>
        </USAddress>
        <RecipientEIN>770361278</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>30404</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS SUPPORTING POSTDOCTORAL RESEARCH USING RUBIN LSST DATA</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>PRINCETON UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>701 CARNEGIE CENTER STE 443</AddressLine1Txt>
          <CityNm>PRINCETON</CityNm>
          <StateAbbreviationCd>NJ</StateAbbreviationCd>
          <ZIPCd>08544</ZIPCd>
        </USAddress>
        <RecipientEIN>210634501</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>28498</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS SUPPORTING POSTDOCTORAL RESEARCH USING RUBIN LSST DATA</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>JOHNS HOPKINS UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3400 N CHARLES STREET</AddressLine1Txt>
          <CityNm>BALTIMORE</CityNm>
          <StateAbbreviationCd>MD</StateAbbreviationCd>
          <ZIPCd>21218</ZIPCd>
        </USAddress>
        <RecipientEIN>520595110</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>25867</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS SUPPORTING POSTDOCTORAL RESEARCH USING RUBIN LSST DATA</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MICHIGAN STATE UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>426AUDITORIUM ROAD ROOM 360</AddressLine1Txt>
          <CityNm>EAST KABSUBG</CityNm>
          <StateAbbreviationCd>MI</StateAbbreviationCd>
          <ZIPCd>48824</ZIPCd>
        </USAddress>
        <RecipientEIN>386005984</RecipientEIN>
        <IRCSectionDesc>GOVERNMENT ENTITY</IRCSectionDesc>
        <CashGrantAmt>20000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>INCLUSIVE COLLABORATION IN RUBIN LSST SCIENCE DESIGNED WITH SUPPORT FROM HEISING-SIMONS</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF DELAWARE</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>220 HULLIHEN HALL</AddressLine1Txt>
          <CityNm>NEWARK</CityNm>
          <StateAbbreviationCd>DE</StateAbbreviationCd>
          <ZIPCd>19716</ZIPCd>
        </USAddress>
        <RecipientEIN>516000297</RecipientEIN>
        <IRCSectionDesc>GOVERNMENT ENTITY</IRCSectionDesc>
        <CashGrantAmt>17000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>INCLUSIVE COLLABORATION IN RUBIN LSST SCIENCE DESIGNED WITH SUPPORT FROM HEISING-SIMONS</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NORTHWESTERN UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>633 CLARK STREET</AddressLine1Txt>
          <CityNm>EVANSTON</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60208</ZIPCd>
        </USAddress>
        <RecipientEIN>362167817</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>15587</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>TEMPLETON FOUNDATION FELLOWSHIPS SUPPORTING POSTDOCTORAL RESEARCH USING RUBIN LSST DATA</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>DREXEL UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3141 CHESTNUT STREET</AddressLine1Txt>
          <CityNm>PHILADELPHIA</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19104</ZIPCd>
        </USAddress>
        <RecipientEIN>231352630</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>7000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>TEMPLETON FELLOWSHIP CATALYST FELLOW EXPNS POSTDOC RESEARCH RUBIN LSST PROGRAM SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>12</Total501c3OrgCnt>
      <TotalOtherOrgCnt>0</TotalOtherOrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>UNDERGRADUATE STIPENDS SUPPORTING PARTICIPATION IN A PROFESSIONAL DEVELOPMENT PROGRAM AT THE RUBIN COMMUNITY WORKSHOP</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>300</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>FINANCIAL ASSISTANCE FOR CHILDCARE TO ENABLE PARTICIPATION IN RUBIN LSST SCIENCE PROGRAMS AND COLLABORATION</GrantTypeTxt>
        <RecipientCnt>8</RecipientCnt>
        <CashGrantAmt>7054</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>JTF SYMPOSIUM FELLOW TRAVEL</GrantTypeTxt>
        <RecipientCnt>6</RecipientCnt>
        <CashGrantAmt>3168</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>WE MAKE GRANTS BASED ON EVALUATION OF SUBMITTED PROPOSALS AND THE RECIPIENT'S WRITTEN AGREEMENT TO USE FUNDS AS OUTLINED IN THE AWARD AND TO FILE A REPORT ON THEIR SPENDING. FOR SMALLER GRANTS TO INDIVIDUALS, SUCH AS CHILDCARE OR UNDERGRADUATE SUMMER SUPPORT, NO ADDITIONAL REPORTING IS REQUIRED. FOR LARGER PROGRAMMATIC GRANTS, SUCH AS FELLOWSHIPS OR SPONSORED RESEARCH, WE REQUIRE RECIPIENTS TO SUBMIT FINAL REPORTS AND RESERVE THE RIGHT TO REQUEST PERIODIC UPDATES THROUGHOUT THE DURATION OF THE AWARD.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>BETH WILLMAN</PersonNm>
        <TitleTxt>CEO</TitleTxt>
        <BaseCompensationFilingOrgAmt>187498</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>197</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>20000</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>16506</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>224201</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DANIEL CALABBRESE</PersonNm>
        <TitleTxt>CORPORATE SECRETARY</TitleTxt>
        <BaseCompensationFilingOrgAmt>14225</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>14225</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE J, PART II- COMPENSATION FROM AN UNRELATED ORGANIZATION</FormAndLineReferenceDesc>
        <ExplanationTxt>NAME: BETH WILLMAN LEFKON COMPENSATION FROM UNRELATED ORGANIZATION: $233,177 NAME OF UNRELATED ORGANIZATIONS: ASSOCIATION OF UNIVERSITIES FOR RESEARCH IN ASTRONOMY (AURA) AND INTEGRITY OUTSOURCE TYPE OF COMPENSATION: WAGES AND BENEFITS NAME: DANIEL CALABBRESE COMPENSATION FROM UNRELATED ORGANIZATION: $7,885 NAME OF UNRELATED ORGANIZATION: ASSOCIATION OF UNIVERSITIES FOR RESEARCH IN ASTRONOMY (AURA) TYPE OF COMPENSATION: WAGES AND BENEFITS</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>LSST DISCOVERY ALLIANCE MEMBERS ARE ADLER PLANETARIUM, ASSOCIATION OF UNIVERSITIES FOR RESEARCH IN ASTRONOMY (AURA), BREAKTHROUGH LISTEN INITIATIVE UNIVERSITY OF CALIFORNIA, BERKELEY, CARNEGIE MELLON UNIVERSITY, COLUMBIA UNIVERSITY, INSTITUTE OF PHYSICS, CZECH ACADEMY OF SCIENCES (FZU), INSTITUT DE PHYSIQUE NUCLEAIRE ET DE PHYSIQUE DES PARTICULES (IN2P3), INSTITUTO DE ASTROFSICA DE CANARIAS (IAC), JOHNS HOPKINS UNIVERSITY, KAVLI INSTITUTE FOR THE PHYSICS AND MATHEMATICS OF THE UNIVERSE (IPMU), LABORATORIO INTERINSTITUCIONAL DE E-ASTRONOMIA (LINEA), LAS CUMBRES OBSERVATORY, (INAF) NATIONAL INSTITUTE FOR ASTROPHYSICS, (MPIA) MAX PLANCK INSTITUT FUER ASTRONOMIE, NORTHWESTERN UNIVERSITY, PRINCETON UNIVERSITY, PURDUE UNIVERSITY, RUTGERS UNIVERSITY, SCHMIDT FUTURES, SLAC/NATIONAL ACCELERATOR LABORATORY, STANFORD UNIVERSITY, TEXAS A&amp;M UNIVERSITY, THE PENNSYLVANIA STATE UNIVERSITY, UNIVERSITY OF ARIZONA, UNIVERSITY OF CALIFORNIA SAN DIEGO, UNIVERSITY OF ILLINOIS AT CHAMPAIGN-URBANA (NCSA), UNIVERSITY OF OXFORD, UNIVERSITY OF PITTSBURGH, UNIVERSITY OF TORONTO, UNIVERSITY OF VIRGINIA, UNIVERSITY OF WASHINGTON, YALE UNIVERSITY, AND CHILE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>SLAC/NATIONAL ACCELERATOR LABORATORY, ASSOCIATION OF UNIVERSITIES FOR RESEARCH IN ASTRONOMY (AURA), UNIVERSITY OF ARIZONA, UNIVERSITY OF WASHINGTON, AND THE UNIVERSITY OF CHILE EACH HAVE THE RIGHT TO APPOINT A BOARD OF DIRECTORS MEMBER. THE VOTING RIGHTS OF THESE BOARD MEMBERS ARE EQUIVALENT TO ANY OTHER BOARD MEMBER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 8B</FormAndLineReferenceDesc>
        <ExplanationTxt>THERE ARE NO COMMITTEES WITH AUTHORITY TO ACT ON BEHALF OF THE GOVERNING BODY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS REVIEWED BY THE CONTRACT CPA, THE DIRECTOR OF FINANCE AND ADMINISTRATION, AND THE CEO. A FINAL VERSION IS THEN SHARED WITH THE CHAIR OF THE BOARD OF DIRECTORS FOR REVIEW AND APPROVAL PRIOR TO SUBMISSION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>LSST DISCOVERY ALLIANCE HAS A WRITTEN CONFLICT OF INTEREST POLICY. OFFICERS, DIRECTORS, AND KEY EMPLOYEES ARE REQUIRED TO DISCLOSE POTENTIAL CONFLICTS ANNUALLY. THE POLICY IS REVIEWED BY THE EXECUTIVE COMMITTEE, WHICH OVERSEES ENFORCEMENT AND ENSURES THAT DISCLOSURES ARE ON FILE FOR ALL RELEVANT INDIVIDUALS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ASSOCIATION OF UNIVERSITIES FOR RESEARCH IN ASTRONOMY (AURA)'S HUMAN RESOURCES DEPARTMENT UNDERTOOK A COMPARABILITY DATA ANALYSIS IN 2022 TO ESTABLISH THE COMPENSATION FOR LSST DISCOVERY ALLIANCE'S CEO, USING VARIOUS TOOLS AND EXTERNAL RESOURCES. THE LSST DISCOVERY ALLIANCE BOARD OF DIRECTORS REVIEWS AND AFFIRMS THE CEO'S COMPENSATION ON AN ANNUAL BASIS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>LSST DISCOVERY ALLIANCE'S ARTICLES OF INCORPORATION, IRS DETERMINATION LETTER, CONFLICT OF INTEREST POLICY, AND AUDITED FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VII, SECTION A AND SCHEDULE J, PART II:</FormAndLineReferenceDesc>
        <ExplanationTxt>LSST DISCOVERY ALLIANCE DOES NOT DIRECTLY EMPLOY STAFF, BECAUSE PAYROLL FUNCTIONS AND SELECTED HUMAN RESOURCES SUPPORT ARE ADMINISTERED THROUGH PROFESSIONAL EMPLOYER ARRANGEMENTS ("EMPLOYER OF RECORD" RELATIONSHIPS). SUPERVISION AND PERFORMANCE EXPECTATIONS ARE MANAGED BY THE LSST DISCOVERY ALLIANCE CEO. UNTIL SEPTEMBER 30, 2023, THE EXECUTIVE DIRECTOR WAS EMPLOYED BY THE ASSOCIATION OF UNIVERSITIES FOR RESEARCH IN ASTRONOMY (AURA), WHICH CONTRACTED HER SERVICES TO LSST DISCOVERY ALLIANCE. BEGINNING OCTOBER 1, 2023, THE EXECUTIVE DIRECTOR'S SERVICES WERE PROVIDED TO LSST DISCOVERY ALLIANCE THROUGH INTEGRITY OUTSOURCE, THE ORGANIZATION'S PROFESSIONAL EMPLOYER ORGANIZATION (PEO) AND EMPLOYER OF RECORD. FOR ALL OF CALENDAR YEAR 2023, THE BOARD SECRETARY WAS EMPLOYED BY AURA, WHICH CONTRACTED HIS SERVICES TO LSST DISCOVERY ALLIANCE. NEITHER AURA NOR INTEGRITY OUTSOURCE IS A RELATED ORGANIZATION TO LSST DISCOVERY ALLIANCE. COMPENSATION INFORMATION, TO THE EXTENT KNOWN, IS REPORTED ON PART VII AND SCHEDULE J.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>