<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xsi:schemaLocation="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2021v4.2">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2022-12-23T13:01:09-06:00</ReturnTs>
    <TaxPeriodEndDt>2021-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmName>
        <BusinessNameLine1Txt>ERNST &amp; YOUNG US LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1101 NEW YORK AVE NW</AddressLine1Txt>
        <CityNm>WASHINGTON</CityNm>
        <StateAbbreviationCd>DC</StateAbbreviationCd>
        <ZIPCd>20005</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2021-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>853677542</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>BREAKTHROUGH ENERGY CATALYST FOUNDATION</BusinessNameLine1Txt>
      </BusinessName>
      <InCareOfNm>% ANGIE FIDLER</InCareOfNm>
      <BusinessNameControlTxt>BREA</BusinessNameControlTxt>
      <PhoneNum>4254974300</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO BOX 563</AddressLine1Txt>
        <CityNm>KIRKLAND</CityNm>
        <StateAbbreviationCd>WA</StateAbbreviationCd>
        <ZIPCd>98083</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>CINDY LEEPER</PersonNm>
      <PersonTitleTxt>Sec./Treasurer</PersonTitleTxt>
      <PhoneNum>4254974300</PhoneNum>
      <SignatureDt>2022-11-14</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>CINDY</PersonFirstNm>
        <PersonLastNm>LEEPER</PersonLastNm>
      </PersonFullName>
      <SSN>999009999</SSN>
    </SigningOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>AMBER GAZICA</PreparerPersonNm>
      <PTIN>P01391011</PTIN>
      <PhoneNum>2023276000</PhoneNum>
    </PreparerPersonGrp>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>3</TrustedCustomerCd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2021</TaxYr>
    <BuildTS>2022-09-23 18:48:47Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="7">
    <IRS990 documentId="IRS990" referenceDocumentId="IRS990ScheduleO" accountingPeriodChangeCd="CHANGE OF ACCOUNTING PERIOD" accountingPeriodChangeApprvCd="REVENUE PROCEDURE 85-58 RULES APPLY">
      <InitialReturnInd>X</InitialReturnInd>
      <PrincipalOfficerNm>Rodi Guidero</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>PO BOX 563</AddressLine1Txt>
        <CityNm>KIRKLAND</CityNm>
        <StateAbbreviationCd>WA</StateAbbreviationCd>
        <ZIPCd>98083</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>69551109</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>HTTPS://WWW.BREAKTHROUGHENERGY.ORG/</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>2020</FormationYr>
      <LegalDomicileStateCd>DE</LegalDomicileStateCd>
      <ActivityOrMissionDesc>TO SUPPORT THE CRITICAL DEVELOPMENT AND DEMONSTRATION PHASES OF NEW EMISSIONS-REDUCTION TECHNOLOGIES.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>2</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>2</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <TotalVolunteersCnt>0</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>65047000</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>35040324</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>0</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>0</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>0</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>-546528</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>0</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>16989</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>65047000</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>34510785</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>0</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>0</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>0</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>52380</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>606437</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>2737906</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>606437</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>2737906</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>64440563</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>31772879</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>65047000</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>96543339</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>606437</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>329897</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>64440563</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>96213442</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>BREAKTHROUGH ENERGY CATALYST FOUNDATION FUNDS THE CRITICAL DEVELOPMENT AND DEMONSTRATION PHASES OF NEW EMISSIONS-REDUCTION TECHNOLOGIES TO HELP TRANSFORM RESEARCH-STAGE INNOVATION INTO REAL-WORLD IMPACT, PRODUCING SIGNIFICANT AND MEASURABLE REDUCTIONS IN GREENHOUSE GAS EMISSIONS.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <ExpenseAmt>1895581</ExpenseAmt>
      <GrantAmt>0</GrantAmt>
      <RevenueAmt>0</RevenueAmt>
      <Desc>Over the past century, the world has seen an extraordinary increase in the global consumption of fossil fuels and the consequent emission of greenhouse gases; the effects of this change are both familiar and devastating. To reduce greenhouse gas emissions, manufacturers and producers in industries worldwide need to adopt clean, economically efficient alternatives to fossil fuels. The Foundation supports high-potential demonstration projects and early adoption of transformational emissions reduction technologies by providing funding for these projects at critical phases in their development. To date, the Foundation focuses on funding the development and demonstration of three specific areas: -Sustainable aviation fuel - commercially viable methods of producing aviation fuel from sources other than greenhouse gas-emitting kerosene -Green hydrogen - commercially viable methods of producing hydrogen from sources other than carbon-emitting hydrocarbons -Direct air capture - the process of extracting carbon dioxide from the ambient air and either sequestering it or using it</Desc>
      <TotalProgramServiceExpensesAmt>1895581</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="IRS990ScheduleA">true</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="IRS990ScheduleB">true</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd>false</DonorAdvisedFundInd>
      <ConservationEasementsInd>false</ConservationEasementsInd>
      <CollectionsOfArtInd>false</CollectionsOfArtInd>
      <CreditCounselingInd>false</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd>false</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd>false</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd>false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd>false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd>false</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd>false</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd>false</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd>false</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd>false</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <ForeignOfficeInd>true</ForeignOfficeInd>
      <ForeignActivitiesInd referenceDocumentId="IRS990ScheduleF">true</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd referenceDocumentId="IRS990ScheduleF">false</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd referenceDocumentId="IRS990ScheduleF">false</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>false</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>false</FundraisingActivitiesInd>
      <GamingActivitiesInd>false</GamingActivitiesInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
      <ScheduleJRequiredInd>false</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>false</PYExcessBenefitTransInd>
      <LoanOutstandingInd>false</LoanOutstandingInd>
      <GrantToRelatedPersonInd>false</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>false</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>false</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>false</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd referenceDocumentId="IRS990ScheduleM">true</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd referenceDocumentId="IRS990ScheduleM">false</DeductibleArtContributionInd>
      <TerminateOperationsInd>false</TerminateOperationsInd>
      <PartialLiquidationInd>false</PartialLiquidationInd>
      <DisregardedEntityInd referenceDocumentId="IRS990ScheduleR">false</DisregardedEntityInd>
      <RelatedEntityInd referenceDocumentId="IRS990ScheduleR">true</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd referenceDocumentId="IRS990ScheduleR">false</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd referenceDocumentId="IRS990ScheduleR">false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>true</ScheduleORequiredInd>
      <IRPDocumentCnt>7</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <EmployeeCnt>0</EmployeeCnt>
      <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>true</ForeignFinancialAccountInd>
      <ForeignCountryCd>LU</ForeignCountryCd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>false</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>false</Form8282PropertyDisposedOfInd>
      <RcvFndsToPayPrsnlBnftCntrctInd>false</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>false</PayPremiumsPrsnlBnftCntrctInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>2</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>2</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>false</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>false</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>true</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>true</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>true</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>true</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>true</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>false</OfficerMailingAddressInd>
      <LocalChaptersInd>false</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>true</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>true</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>true</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>true</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>false</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>false</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>false</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>false</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <PersonNm>ANGIE FIDLER</PersonNm>
        <PhoneNum>4254974300</PhoneNum>
        <USAddress>
          <AddressLine1Txt>PO BOX 563</AddressLine1Txt>
          <CityNm>KIRKLAND</CityNm>
          <StateAbbreviationCd>WA</StateAbbreviationCd>
          <ZIPCd>98083</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <NoListedPersonsCompensatedInd>X</NoListedPersonsCompensatedInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>JONAH GOLDMAN</PersonNm>
        <TitleTxt>MANAGING DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>15.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>2.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GREG NELSON</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>2.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CINDY LEEPER</PersonNm>
        <TitleTxt>SECRETARY &amp; TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>15.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>2.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL BOOTS</PersonNm>
        <TitleTxt>EVP</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>2.0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>0</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>0</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>false</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>Agency EA</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>311 W Walton St</AddressLine1Txt>
            <CityNm>CHICAGO</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60610</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Marketing</ServicesDesc>
        <CompensationAmt>512643</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>Rhodium Group</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>5 COLUMBUS CIR</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10019</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Research provider</ServicesDesc>
        <CompensationAmt>400000</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>Ropes Gray</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1211 AVENUE OF THE AMERICAS</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10036</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>LEGAL SERVICES</ServicesDesc>
        <CompensationAmt>884072</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>3</CntrctRcvdGreaterThan100KCnt>
      <AllOtherContributionsAmt>35040324</AllOtherContributionsAmt>
      <NoncashContributionsAmt>35040324</NoncashContributionsAmt>
      <TotalContributionsAmt>35040324</TotalContributionsAmt>
      <TotalProgramServiceRevenueAmt>0</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>307</TotalRevenueColumnAmt>
        <ExclusionAmt>307</ExclusionAmt>
      </InvestmentIncomeGrp>
      <IncmFromInvestBondProceedsGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </IncmFromInvestBondProceedsGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </RoyaltiesRevenueGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>0</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>34493489</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>35040324</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>-546835</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>-546835</TotalRevenueColumnAmt>
      </NetGainOrLossInvestmentsGrp>
      <FundraisingGrossIncomeAmt>0</FundraisingGrossIncomeAmt>
      <FundraisingDirectExpensesAmt>0</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncmFromFundraisingEvtGrp>
      <GamingGrossIncomeAmt>0</GamingGrossIncomeAmt>
      <GamingDirectExpensesAmt>0</GamingDirectExpensesAmt>
      <NetIncomeFromGamingGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncomeFromGamingGrp>
      <GrossSalesOfInventoryAmt>0</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncomeOrLossGrp>
      <OtherRevenueMiscGrp>
        <Desc>CURRENCY RE-EVALUATION GAIN</Desc>
        <TotalRevenueColumnAmt>16989</TotalRevenueColumnAmt>
        <ExclusionAmt>16989</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>16989</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>34510785</TotalRevenueColumnAmt>
        <ExclusionAmt>17296</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>0</TotalAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>0</TotalAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>0</TotalAmt>
      </ForeignGrantsGrp>
      <BenefitsToMembersGrp>
        <TotalAmt>0</TotalAmt>
      </BenefitsToMembersGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>0</TotalAmt>
      </CompCurrentOfcrDirectorsGrp>
      <CompDisqualPersonsGrp>
        <TotalAmt>0</TotalAmt>
      </CompDisqualPersonsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>0</TotalAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>0</TotalAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>0</TotalAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>0</TotalAmt>
      </PayrollTaxesGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>745670</TotalAmt>
        <ProgramServicesAmt>281036</ProgramServicesAmt>
        <ManagementAndGeneralAmt>464634</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>226503</TotalAmt>
        <ProgramServicesAmt>43383</ProgramServicesAmt>
        <ManagementAndGeneralAmt>183120</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForServicesProfFundraising>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesProfFundraising>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>26219</TotalAmt>
        <ManagementAndGeneralAmt>26219</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>942379</TotalAmt>
        <ProgramServicesAmt>826437</ProgramServicesAmt>
        <ManagementAndGeneralAmt>115942</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>103733</TotalAmt>
        <ProgramServicesAmt>51353</ProgramServicesAmt>
        <FundraisingAmt>52380</FundraisingAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>30</TotalAmt>
        <ManagementAndGeneralAmt>30</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>0</TotalAmt>
      </InformationTechnologyGrp>
      <RoyaltiesGrp>
        <TotalAmt>0</TotalAmt>
      </RoyaltiesGrp>
      <OccupancyGrp>
        <TotalAmt>0</TotalAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>0</TotalAmt>
      </TravelGrp>
      <PymtTravelEntrtnmntPubOfclGrp>
        <TotalAmt>0</TotalAmt>
      </PymtTravelEntrtnmntPubOfclGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>512643</TotalAmt>
        <ProgramServicesAmt>512643</ProgramServicesAmt>
      </ConferencesMeetingsGrp>
      <InterestGrp>
        <TotalAmt>0</TotalAmt>
      </InterestGrp>
      <PaymentsToAffiliatesGrp>
        <TotalAmt>0</TotalAmt>
      </PaymentsToAffiliatesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>0</TotalAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>0</TotalAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>MEMBERSHIP DUES</Desc>
        <TotalAmt>180729</TotalAmt>
        <ProgramServicesAmt>180729</ProgramServicesAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>2737906</TotalAmt>
        <ProgramServicesAmt>1895581</ProgramServicesAmt>
        <ManagementAndGeneralAmt>789945</ManagementAndGeneralAmt>
        <FundraisingAmt>52380</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>65047000</BOYAmt>
        <EOYAmt>93875421</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>2667918</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <AccountsReceivableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </AccountsReceivableGrp>
      <ReceivablesFromOfficersEtcGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </ReceivablesFromOfficersEtcGrp>
      <RcvblFromDisqualifiedPrsnGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </RcvblFromDisqualifiedPrsnGrp>
      <OthNotesLoansReceivableNetGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OthNotesLoansReceivableNetGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsOtherSecuritiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </InvestmentsOtherSecuritiesGrp>
      <InvestmentsProgramRelatedGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </InvestmentsProgramRelatedGrp>
      <IntangibleAssetsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </IntangibleAssetsGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>65047000</BOYAmt>
        <EOYAmt>96543339</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>606437</BOYAmt>
        <EOYAmt>329897</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <GrantsPayableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </GrantsPayableGrp>
      <DeferredRevenueGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </DeferredRevenueGrp>
      <TaxExemptBondLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TaxExemptBondLiabilitiesGrp>
      <EscrowAccountLiabilityGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </EscrowAccountLiabilityGrp>
      <LoansFromOfficersDirectorsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LoansFromOfficersDirectorsGrp>
      <MortgNotesPyblScrdInvstPropGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </MortgNotesPyblScrdInvstPropGrp>
      <UnsecuredNotesLoansPayableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </UnsecuredNotesLoansPayableGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>606437</BOYAmt>
        <EOYAmt>329897</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>64440563</BOYAmt>
        <EOYAmt>96213442</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>64440563</BOYAmt>
        <EOYAmt>96213442</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>65047000</BOYAmt>
        <EOYAmt>96543339</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>31772879</ReconcilationRevenueExpnssAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>false</FSAuditedInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="IRS990ScheduleA">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>0</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>65047000</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>35040324</CurrentTaxYearAmt>
        <TotalAmt>100087324</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TaxRevLeviedOrgnztnlBnft170Grp>
        <TotalAmt>0</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft170Grp>
      <GovtFurnSrvcFcltsVl170Grp>
        <TotalAmt>0</TotalAmt>
      </GovtFurnSrvcFcltsVl170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>0</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>65047000</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>35040324</CurrentTaxYearAmt>
        <TotalAmt>100087324</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>98085232</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>2002092</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearAmt>307</CurrentTaxYearAmt>
        <TotalAmt>307</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <UnrelatedBusinessNetIncm170Grp>
        <TotalAmt>0</TotalAmt>
      </UnrelatedBusinessNetIncm170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearAmt>16989</CurrentTaxYearAmt>
        <TotalAmt>16989</TotalAmt>
      </OtherIncome170Grp>
      <TotalSupportAmt>100104620</TotalSupportAmt>
      <First5Years170Ind>X</First5Years170Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART II, COLUMN D</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS REPORTING A SHORT YEAR IN COLUMN (D) FOR THE PERIOD 10/16/2020 - 6/30/2021.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART II, COLUMN E</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS REPORTING A SHORT YEAR IN COLUMN (E) FOR THE PERIOD 7/1/2021 - 12/31/2021.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="IRS990ScheduleB">
      <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>
    <IRS990ScheduleF documentId="IRS990ScheduleF">
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>2</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Program Services</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>admin/consulting</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>295608</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>2</SubtotalEmployeesCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>2</TotalEmployeeCnt>
      <SubtotalSpentAmt>295608</SubtotalSpentAmt>
      <TotalSpentAmt>295608</TotalSpentAmt>
      <TransferToForeignCorpInd>false</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>false</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>false</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>false</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>false</ForeignPartnershipInd>
      <BoycottCountriesInd>false</BoycottCountriesInd>
    </IRS990ScheduleF>
    <IRS990ScheduleM documentId="IRS990ScheduleM">
      <WorksOfArtGrp />
      <ArtHistoricalTreasuresGrp />
      <ArtFractionalInterestGrp />
      <BooksAndPublicationsGrp />
      <ClothingAndHouseholdGoodsGrp />
      <CarsAndOtherVehiclesGrp />
      <BoatsAndPlanesGrp />
      <IntellectualPropertyGrp />
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>35040324</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <SecuritiesCloselyHeldStockGrp />
      <SecurPrtnrshpTrustIntrstsGrp />
      <SecuritiesMiscellaneousGrp />
      <QualifiedContribHistStructGrp />
      <QualifiedContribOtherGrp />
      <RealEstateResidentialGrp />
      <RealEstateCommercialGrp />
      <RealEstateOtherGrp />
      <CollectiblesGrp />
      <FoodInventoryGrp />
      <DrugsAndMedicalSuppliesGrp />
      <TaxidermyGrp />
      <HistoricalArtifactsGrp />
      <ScientificSpecimensGrp />
      <ArchaeologicalArtifactsGrp />
      <AnyPropertyThatMustBeHeldInd>false</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>false</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>false</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>Column (B) reports the number of contributions.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>the FOUNDATION HAS TWO MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MEMBERS OF THE FOUNDATION HAVE THE RIGHT TO APPOINT AND REMOVE THE DIRECTORS OF THE FOUNDATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS HAVE THE POWER TO APPOINT SUCCESSOR MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE DRAFT RETURN IS REVIEWED BY THE FINANCE AND LEGAL FUNCTIONS AND APPROVED BY THE SECRETARY AND TREASURER. A FINAL VERSION OF THE FORM IS MADE AVAILABLE TO THE BOARD BEFORE FILING WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CONFLICT OF INTEREST POLICY APPLIES TO DIRECTORS, OFFICERS AND KEY EMPLOYEES. THEY ARE REQUIRED TO DISCLOSE POTENTIAL CONFLICTS WITH RESPECT TO ANY TRANSACTION TO THE BOARD OF DIRECTORS, OR A COMMITTEE THEREOF, WHICH DETERMINES IF THERE IS A CONFLICT. IF THERE IS A CONFLICT, THE PERSON WITH THE CONFLICT MUST REFRAIN FROM ATTEMPTING TO INFLUENCE DECISIONS REGARDING THE TRANSACTION AND IS NOT PERMITTED TO PARTICIPATE IN DISCUSSIONS OF THE TRANSACTION EXCEPT TO RESPOND TO REQUESTS FOR INFORMATION ABOUT THE TRANSACTION. DIRECTORS, OFFICERS AND KEY EMPLOYEES ARE REQUIRED TO ANNUALLY COMPLETE STATEMENTS DISCLOSING FAMILY MEMBERS AND RELATED ENTITIES WHO MAY DO BUSINESS WITH THE ORGANIZATION. THESE STATEMENTS ARE REVIEWED BY THE ORGANIZATION'S LEGAL COUNSEL AND ARE AVAILABLE FOR INSPECTION BY MEMBERS OF THE BOARD OF DIRECTORS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THESE DOCUMENTS ARE NOT PUBLIC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, HEADING - PART B</FormAndLineReferenceDesc>
        <ExplanationTxt>BREAKTHROUGH ENERGY CATALYST FOUNDATION'S TAX YEAR ORIGINALLY ENDED ON JUNE 30 AND IT TIMELY FILED ITS INITIAL FORM 990 FOR THE TAX YEAR ENDED 6/30/2021. SHORTLY AFTER THE INITIAL RETURN WAS TIMELY FILED, IT FILED AN EXTENSION FOR A SHORT TAX YEAR OF 7/1/2021-12/31/2021. THE EXTENSION APPROPRIATELY INDICATED THAT THIS WAS A SHORT YEAR DUE TO A CHANGE IN THE TAX YEAR END. THE EXTENSION WAS ACCEPTED, BUT THE IRS BUSINESS MASTER FILE WAS NOT UPDATED TO CHANGE THE FISCAL YEAR END DATE. (THIS WAS BREATKTHROUGH ENERGY CATALYST FOUNDATION'S FIRST TAX YEAR CHANGE, THEREFORE NO FORM 1128 WAS REQUIRED.) WHEN BREAKTHROUGH ENERGY CATALYST FOUNDATION FILED ITS 12/31/21 SHORT YEAR TAX RETURN ON THE EXTENDED DUE DATE OF NOVEMBER 15TH, 2022, IT WAS REJECTED. UPON SEEKING ASSISTANCE FROM THE IRS WITH THE EFILING REJECTION, THE IRS ADVISED CHECKING THE INITIAL RETURN BOX (AS A WORKAROUND) AND RESUBMITTING. THIS IS NOT AN INITIAL RETURN, BUT IT IS BEING SUBMITTED WITH THAT BOX CHECKED BASED ON THE GUIDANCE FROM THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:PROFESSIONAL FEES TOTAL FEES:115942</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:STRATEGY CONSULTING TOTAL FEES:826437</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>BREAKTHROUGH ENERGY ACTION INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>PO BOX 563</AddressLine1Txt>
          <CityNm>KIRLAND</CityNm>
          <StateAbbreviationCd>WA</StateAbbreviationCd>
          <ZIPCd>98083</ZIPCd>
        </USAddress>
        <EIN>853694865</EIN>
        <PrimaryActivitiesTxt>ADVOCACY</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(4)</ExemptCodeSectionTxt>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>BREAKTHROUGH ENERGY FOUNDATION</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>PO BOX 563</AddressLine1Txt>
          <CityNm>KIRKLAND</CityNm>
          <StateAbbreviationCd>WA</StateAbbreviationCd>
          <ZIPCd>98083</ZIPCd>
        </USAddress>
        <EIN>853672460</EIN>
        <PrimaryActivitiesTxt>SCIENTIFIC</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ALZHEIMERS DISEASE DATA INITIATIVE INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>4110 CARILLION POINT</AddressLine1Txt>
          <CityNm>KIRKLAND</CityNm>
          <StateAbbreviationCd>WA</StateAbbreviationCd>
          <ZIPCd>98033</ZIPCd>
        </USAddress>
        <EIN>853776266</EIN>
        <PrimaryActivitiesTxt>SCIENTIFIC</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>WA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>4</PublicCharityStatusTxt>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>false</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
