﻿<?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="2024v5.2">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-08-21T09:39:49-05:00</ReturnTs>
    <TaxPeriodEndDt>2024-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>331197384</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>ANDERSEN TAX LLC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1700 EAST PUTNAM AVENUE SUITE 408</AddressLine1Txt>
        <CityNm>OLD GREENWICH</CityNm>
        <StateAbbreviationCd>CT</StateAbbreviationCd>
        <ZIPCd>06870</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990PF</ReturnTypeCd>
    <TaxPeriodBeginDt>2024-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>133746731</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>CHRISTY AND JOHN MACK FOUNDATION</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>CHRI</BusinessNameControlTxt>
      <PhoneNum>9149250229</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO BOX 99</AddressLine1Txt>
        <CityNm>PURCHASE</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>10577</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>CHRISTY K MACK</PersonNm>
      <PersonTitleTxt>PRESIDENT</PersonTitleTxt>
      <PhoneNum>9149250229</PhoneNum>
      <SignatureDt>2025-08-19</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>0</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>CHRIS CARREIRA</PreparerPersonNm>
      <PTIN>P01250834</PTIN>
      <PhoneNum>2039873660</PhoneNum>
    </PreparerPersonGrp>
    <TaxYr>2024</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="10">
    <IRS990PF documentId="RetDoc1235000001">
      <AddressChangeInd>X</AddressChangeInd>
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <FMVAssetsEOYAmt>15536503</FMVAssetsEOYAmt>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <AnalysisOfRevenueAndExpenses>
        <ContriRcvdRevAndExpnssAmt>5024711</ContriRcvdRevAndExpnssAmt>
        <DividendsRevAndExpnssAmt>63630</DividendsRevAndExpnssAmt>
        <DividendsNetInvstIncmAmt>63630</DividendsNetInvstIncmAmt>
        <NetGainSaleAstRevAndExpnssAmt>2064070</NetGainSaleAstRevAndExpnssAmt>
        <GrossSalesPriceAmt>2969855</GrossSalesPriceAmt>
        <CapGainNetIncmNetInvstIncmAmt>2064070</CapGainNetIncmNetInvstIncmAmt>
        <TotalRevAndExpnssAmt>7152411</TotalRevAndExpnssAmt>
        <TotalNetInvstIncmAmt>2127700</TotalNetInvstIncmAmt>
        <CompOfcrDirTrstRevAndExpnssAmt>0</CompOfcrDirTrstRevAndExpnssAmt>
        <CompOfcrDirTrstNetInvstIncmAmt>0</CompOfcrDirTrstNetInvstIncmAmt>
        <CompOfcrDirTrstDsbrsChrtblAmt>0</CompOfcrDirTrstDsbrsChrtblAmt>
        <AccountingFeesRevAndExpnssAmt referenceDocumentId="RetDoc2002200001">7400</AccountingFeesRevAndExpnssAmt>
        <AccountingFeesNetInvstIncmAmt>3700</AccountingFeesNetInvstIncmAmt>
        <AccountingFeesChrtblPrpsAmt>3700</AccountingFeesChrtblPrpsAmt>
        <TaxesRevAndExpnssAmt referenceDocumentId="RetDoc2002500001">80000</TaxesRevAndExpnssAmt>
        <TaxesNetInvstIncmAmt>0</TaxesNetInvstIncmAmt>
        <TaxesDsbrsChrtblAmt>0</TaxesDsbrsChrtblAmt>
        <OtherExpensesRevAndExpnssAmt referenceDocumentId="RetDoc2003200001">1272</OtherExpensesRevAndExpnssAmt>
        <OtherExpensesNetInvstIncmAmt>636</OtherExpensesNetInvstIncmAmt>
        <OtherExpensesDsbrsChrtblAmt>636</OtherExpensesDsbrsChrtblAmt>
        <TotOprExpensesRevAndExpnssAmt>88672</TotOprExpensesRevAndExpnssAmt>
        <TotOprExpensesNetInvstIncmAmt>4336</TotOprExpensesNetInvstIncmAmt>
        <TotOprExpensesDsbrsChrtblAmt>4336</TotOprExpensesDsbrsChrtblAmt>
        <ContriPaidRevAndExpnssAmt>4982000</ContriPaidRevAndExpnssAmt>
        <ContriPaidDsbrsChrtblAmt>4982000</ContriPaidDsbrsChrtblAmt>
        <TotalExpensesRevAndExpnssAmt>5070672</TotalExpensesRevAndExpnssAmt>
        <TotalExpensesNetInvstIncmAmt>4336</TotalExpensesNetInvstIncmAmt>
        <TotalExpensesDsbrsChrtblAmt>4986336</TotalExpensesDsbrsChrtblAmt>
        <ExcessRevenueOverExpensesAmt>2081739</ExcessRevenueOverExpensesAmt>
        <NetInvestmentIncomeAmt>2123364</NetInvestmentIncomeAmt>
      </AnalysisOfRevenueAndExpenses>
      <Form990PFBalanceSheetsGrp>
        <CashBOYAmt>132048</CashBOYAmt>
        <CashEOYAmt>158376</CashEOYAmt>
        <CashEOYFMVAmt>158376</CashEOYFMVAmt>
        <SavAndTempCashInvstBOYAmt>1786</SavAndTempCashInvstBOYAmt>
        <SavAndTempCashInvstEOYAmt>547295</SavAndTempCashInvstEOYAmt>
        <SavAndTempCashInvstEOYFMVAmt>547295</SavAndTempCashInvstEOYFMVAmt>
        <CorporateStockBOYAmt>266640</CorporateStockBOYAmt>
        <CorporateStockEOYAmt referenceDocumentId="RetDoc2018900001">1071460</CorporateStockEOYAmt>
        <CorporateStockEOYFMVAmt>6758917</CorporateStockEOYFMVAmt>
        <CorporateBondsBOYAmt>1713861</CorporateBondsBOYAmt>
        <CorporateBondsEOYAmt referenceDocumentId="RetDoc2044400001">100206</CorporateBondsEOYAmt>
        <CorporateBondsEOYFMVAmt>109212</CorporateBondsEOYFMVAmt>
        <OtherInvestmentsBOYAmt>500000</OtherInvestmentsBOYAmt>
        <OtherInvestmentsEOYAmt referenceDocumentId="RetDoc2018100001">500000</OtherInvestmentsEOYAmt>
        <OtherInvestmentsEOYFMVAmt>7962703</OtherInvestmentsEOYFMVAmt>
        <TotalAssetsBOYAmt>2614335</TotalAssetsBOYAmt>
        <TotalAssetsEOYAmt>2377337</TotalAssetsEOYAmt>
        <TotalAssetsEOYFMVAmt>15536503</TotalAssetsEOYFMVAmt>
        <TotalLiabilitiesBOYAmt>0</TotalLiabilitiesBOYAmt>
        <TotalLiabilitiesEOYAmt>0</TotalLiabilitiesEOYAmt>
        <OrgDoesNotFollowFASB117Ind>X</OrgDoesNotFollowFASB117Ind>
        <CapitalStockBOYAmt>0</CapitalStockBOYAmt>
        <CapitalStockEOYAmt>0</CapitalStockEOYAmt>
        <AdditionalPaidInCapitalBOYAmt>0</AdditionalPaidInCapitalBOYAmt>
        <AdditionalPaidInCapitalEOYAmt>0</AdditionalPaidInCapitalEOYAmt>
        <RetainedEarningBOYAmt>2614335</RetainedEarningBOYAmt>
        <RetainedEarningEOYAmt>2377337</RetainedEarningEOYAmt>
        <TotNetAstOrFundBalancesBOYAmt>2614335</TotNetAstOrFundBalancesBOYAmt>
        <TotNetAstOrFundBalancesEOYAmt>2377337</TotNetAstOrFundBalancesEOYAmt>
        <TotalLiabilitiesNetAstBOYAmt>2614335</TotalLiabilitiesNetAstBOYAmt>
        <TotalLiabilitiesNetAstEOYAmt>2377337</TotalLiabilitiesNetAstEOYAmt>
      </Form990PFBalanceSheetsGrp>
      <ChgInNetAssetsFundBalancesGrp>
        <TotNetAstOrFundBalancesBOYAmt>2614335</TotNetAstOrFundBalancesBOYAmt>
        <ExcessRevenueOverExpensesAmt>2081739</ExcessRevenueOverExpensesAmt>
        <OtherIncreasesAmt referenceDocumentId="RetDoc2049700001">995346</OtherIncreasesAmt>
        <SubtotalAmt>5691420</SubtotalAmt>
        <OtherDecreasesAmt referenceDocumentId="RetDoc2049800001">3314083</OtherDecreasesAmt>
        <TotNetAstOrFundBalancesEOYAmt>2377337</TotNetAstOrFundBalancesEOYAmt>
      </ChgInNetAssetsFundBalancesGrp>
      <CapGainsLossTxInvstIncmDetail>
        <CapGainsLossTxInvstIncmGrp>
          <PropertyDesc>PUBLICLY TRADED SECURITIES</PropertyDesc>
          <GrossSalesPriceAmt>2587225</GrossSalesPriceAmt>
          <CostOrOtherBasisAmt>905785</CostOrOtherBasisAmt>
          <GainOrLossAmt>1681440</GainOrLossAmt>
          <GainsMinusExcessOrLossesAmt>1681440</GainsMinusExcessOrLossesAmt>
        </CapGainsLossTxInvstIncmGrp>
        <CapGainsLossTxInvstIncmGrp>
          <PropertyDesc>MILLENNIUM - DISTRIBUTION IN EXCESS OF BASIS</PropertyDesc>
          <HowAcquiredCd>P</HowAcquiredCd>
          <SoldDt>2024-12-31</SoldDt>
          <GrossSalesPriceAmt>382630</GrossSalesPriceAmt>
          <GainOrLossAmt>382630</GainOrLossAmt>
          <GainsMinusExcessOrLossesAmt>382630</GainsMinusExcessOrLossesAmt>
        </CapGainsLossTxInvstIncmGrp>
        <CapitalGainNetIncomeAmt>2064070</CapitalGainNetIncomeAmt>
      </CapGainsLossTxInvstIncmDetail>
      <ExciseTaxBasedOnInvstIncmGrp>
        <InvestmentIncomeExciseTaxAmt>29515</InvestmentIncomeExciseTaxAmt>
        <TaxUnderSection511Amt>0</TaxUnderSection511Amt>
        <SubtotalAmt>29515</SubtotalAmt>
        <SubtitleATaxAmt>0</SubtitleATaxAmt>
        <TaxBasedOnInvestmentIncomeAmt>29515</TaxBasedOnInvestmentIncomeAmt>
        <EstimatedPlusOvpmtIncmTxAmt>51643</EstimatedPlusOvpmtIncmTxAmt>
        <ExemptFrgnOrgTaxWthldAtSrceAmt>0</ExemptFrgnOrgTaxWthldAtSrceAmt>
        <ExtsnRequestIncomeTaxPaidAmt>0</ExtsnRequestIncomeTaxPaidAmt>
        <BackupWithholdingWithheldAmt>0</BackupWithholdingWithheldAmt>
        <TotalPaymentsAndCreditsAmt>51643</TotalPaymentsAndCreditsAmt>
        <EsPenaltyAmt>0</EsPenaltyAmt>
        <OverpaymentAmt>22128</OverpaymentAmt>
        <AppliedToESTaxAmt>22128</AppliedToESTaxAmt>
        <RefundAmt>0</RefundAmt>
      </ExciseTaxBasedOnInvstIncmGrp>
      <StatementsRegardingActyGrp>
        <LegislativePoliticalActyInd>0</LegislativePoliticalActyInd>
        <MoreThan100SpentInd>0</MoreThan100SpentInd>
        <Form1120POLFiledInd>0</Form1120POLFiledInd>
        <Section4955OrganizationTaxAmt>0</Section4955OrganizationTaxAmt>
        <Section4955ManagersTaxAmt>0</Section4955ManagersTaxAmt>
        <TaxReimbursedAmt>0</TaxReimbursedAmt>
        <ActivitiesNotPreviouslyRptInd>0</ActivitiesNotPreviouslyRptInd>
        <ChangesToArticlesOrBylawsInd>0</ChangesToArticlesOrBylawsInd>
        <UnrelatedBusIncmOverLimitInd>0</UnrelatedBusIncmOverLimitInd>
        <OrganizationDissolvedEtcInd>0</OrganizationDissolvedEtcInd>
        <Section508eRqrSatisfiedInd>1</Section508eRqrSatisfiedInd>
        <AtLeast5000InAssetsInd>1</AtLeast5000InAssetsInd>
        <OrgReportOrRegisterStateCd>DE</OrgReportOrRegisterStateCd>
        <OrgReportOrRegisterStateCd>NY</OrgReportOrRegisterStateCd>
        <Form990PFFiledWithAttyGenInd>1</Form990PFFiledWithAttyGenInd>
        <PrivateOperatingFoundationInd>0</PrivateOperatingFoundationInd>
        <NewSubstantialContributorsInd>0</NewSubstantialContributorsInd>
        <OwnControlledEntityInd>0</OwnControlledEntityInd>
        <DonorAdvisedFundInd>0</DonorAdvisedFundInd>
        <ComplyWithPublicInspRqrInd>1</ComplyWithPublicInspRqrInd>
        <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
        <IndividualWithBooksNm>CHRISTY MACK</IndividualWithBooksNm>
        <PhoneNum>9149250229</PhoneNum>
        <LocationOfBooksUSAddress>
          <AddressLine1Txt>PO BOX 99</AddressLine1Txt>
          <CityNm>PURCHASE</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10577</ZIPCd>
        </LocationOfBooksUSAddress>
        <ForeignAccountsQuestionInd>0</ForeignAccountsQuestionInd>
      </StatementsRegardingActyGrp>
      <StatementsRegardingActy4720Grp>
        <SaleOrExchDisqualifiedPrsnInd>0</SaleOrExchDisqualifiedPrsnInd>
        <BrrwOrLendDisqualifiedPrsnInd>0</BrrwOrLendDisqualifiedPrsnInd>
        <FurnGoodsDisqualifiedPrsnInd>0</FurnGoodsDisqualifiedPrsnInd>
        <PayCompDisqualifiedPrsnInd>0</PayCompDisqualifiedPrsnInd>
        <TransferAstDisqualifiedPrsnInd>0</TransferAstDisqualifiedPrsnInd>
        <PaymentToGovernmentOfficialInd>0</PaymentToGovernmentOfficialInd>
        <UncorrectedPriorActsInd>0</UncorrectedPriorActsInd>
        <UndistributedIncomePYInd>0</UndistributedIncomePYInd>
        <BusinessHoldingsInd>0</BusinessHoldingsInd>
        <JeopardyInvestmentsInd>0</JeopardyInvestmentsInd>
        <UncorrectedPYJeopardyInvstInd>0</UncorrectedPYJeopardyInvstInd>
        <InfluenceLegislationInd>0</InfluenceLegislationInd>
        <InfluenceElectionInd>0</InfluenceElectionInd>
        <GrantsToIndividualsInd>0</GrantsToIndividualsInd>
        <GrantsToOrganizationsInd>0</GrantsToOrganizationsInd>
        <NoncharitablePurposeInd>0</NoncharitablePurposeInd>
        <RcvFndsToPayPrsnlBnftCntrctInd>0</RcvFndsToPayPrsnlBnftCntrctInd>
        <PayPremiumsPrsnlBnftCntrctInd>0</PayPremiumsPrsnlBnftCntrctInd>
        <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
        <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      </StatementsRegardingActy4720Grp>
      <OfficerDirTrstKeyEmplInfoGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>JOHN J MACK</PersonNm>
          <USAddress>
            <AddressLine1Txt>PO BOX 99</AddressLine1Txt>
            <CityNm>PURCHASE</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10577</ZIPCd>
          </USAddress>
          <TitleTxt>DIRECTOR</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>CHRISTY K MACK</PersonNm>
          <USAddress>
            <AddressLine1Txt>PO BOX 99</AddressLine1Txt>
            <CityNm>PURCHASE</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10577</ZIPCd>
          </USAddress>
          <TitleTxt>PRESIDENT</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <CompOfHghstPdEmplOrNONETxt>NONE</CompOfHghstPdEmplOrNONETxt>
        <OtherEmployeePaidOver50kCnt>0</OtherEmployeePaidOver50kCnt>
        <CompOfHghstPdCntrctOrNONETxt>NONE</CompOfHghstPdCntrctOrNONETxt>
        <ContractorPaidOver50kCnt>0</ContractorPaidOver50kCnt>
      </OfficerDirTrstKeyEmplInfoGrp>
      <SumOfProgramRelatedInvstGrp>
        <TotalAmt>0</TotalAmt>
      </SumOfProgramRelatedInvstGrp>
      <MinimumInvestmentReturnGrp>
        <AverageMonthlyFMVOfSecAmt>4405392</AverageMonthlyFMVOfSecAmt>
        <AverageMonthlyCashBalancesAmt>318837</AverageMonthlyCashBalancesAmt>
        <FMVAllOtherNoncharitableAstAmt>7517610</FMVAllOtherNoncharitableAstAmt>
        <TotalFMVOfUnusedAssetsAmt>12241839</TotalFMVOfUnusedAssetsAmt>
        <ReductionClaimedAmt>0</ReductionClaimedAmt>
        <AcquisitionIndebtednessAmt>0</AcquisitionIndebtednessAmt>
        <AdjustedTotalFMVOfUnusedAstAmt>12241839</AdjustedTotalFMVOfUnusedAstAmt>
        <CashDeemedCharitableAmt>183628</CashDeemedCharitableAmt>
        <NetVlNoncharitableAssetsAmt>12058211</NetVlNoncharitableAssetsAmt>
        <MinimumInvestmentReturnAmt>602911</MinimumInvestmentReturnAmt>
      </MinimumInvestmentReturnGrp>
      <DistributableAmountGrp>
        <MinimumInvestmentReturnAmt>602911</MinimumInvestmentReturnAmt>
        <TaxBasedOnInvestmentIncomeAmt>29515</TaxBasedOnInvestmentIncomeAmt>
        <TotalTaxAmt>29515</TotalTaxAmt>
        <DistributableBeforeAdjAmt>573396</DistributableBeforeAdjAmt>
        <RecoveriesQualfiedDistriAmt>0</RecoveriesQualfiedDistriAmt>
        <DistributableBeforeDedAmt>573396</DistributableBeforeDedAmt>
        <DeductionFromDistributableAmt>0</DeductionFromDistributableAmt>
        <DistributableAsAdjustedAmt>573396</DistributableAsAdjustedAmt>
      </DistributableAmountGrp>
      <PFQualifyingDistributionsGrp>
        <ExpensesAndContributionsAmt>4986336</ExpensesAndContributionsAmt>
        <ProgramRelatedInvstTotalAmt>0</ProgramRelatedInvstTotalAmt>
        <QualifyingDistributionsAmt>4986336</QualifyingDistributionsAmt>
      </PFQualifyingDistributionsGrp>
      <UndistributedIncomeGrp>
        <DistributableAsAdjustedAmt>573396</DistributableAsAdjustedAmt>
        <UndistributedIncomePYAmt>0</UndistributedIncomePYAmt>
        <TotalForPriorYearsAmt>0</TotalForPriorYearsAmt>
        <ExcessDistributionCyovYr5Amt>4766505</ExcessDistributionCyovYr5Amt>
        <ExcessDistributionCyovYr4Amt>3944184</ExcessDistributionCyovYr4Amt>
        <ExcessDistributionCyovYr3Amt>3807210</ExcessDistributionCyovYr3Amt>
        <ExcessDistributionCyovYr2Amt>6542504</ExcessDistributionCyovYr2Amt>
        <ExcessDistributionCyovYr1Amt>3055408</ExcessDistributionCyovYr1Amt>
        <TotalExcessDistributionCyovAmt>22115811</TotalExcessDistributionCyovAmt>
        <QualifyingDistributionsAmt>4986336</QualifyingDistributionsAmt>
        <AppliedToYear1Amt>0</AppliedToYear1Amt>
        <AppliedToPriorYearsAmt>0</AppliedToPriorYearsAmt>
        <TreatedAsDistriFromCorpusAmt>0</TreatedAsDistriFromCorpusAmt>
        <AppliedToCurrentYearAmt>573396</AppliedToCurrentYearAmt>
        <RemainingDistriFromCorpusAmt>4412940</RemainingDistriFromCorpusAmt>
        <ExcessDistriCyovAppCYCorpusAmt>0</ExcessDistriCyovAppCYCorpusAmt>
        <ExcessDistributionCyovAppCYAmt>0</ExcessDistributionCyovAppCYAmt>
        <TotalCorpusAmt>26528751</TotalCorpusAmt>
        <PriorYearUndistributedIncmAmt>0</PriorYearUndistributedIncmAmt>
        <PriorYearDeficiencyOrTaxAmt>0</PriorYearDeficiencyOrTaxAmt>
        <Taxable1Amt>0</Taxable1Amt>
        <Taxable2Amt>0</Taxable2Amt>
        <UndistributedIncomeCYAmt>0</UndistributedIncomeCYAmt>
        <CorpusDistri170b1EOr4942g3Amt>0</CorpusDistri170b1EOr4942g3Amt>
        <ExcessDistriCyovFromYr5Amt>4766505</ExcessDistriCyovFromYr5Amt>
        <ExcessDistriCyovToNextYrAmt>21762246</ExcessDistriCyovToNextYrAmt>
        <ExcessFromYear4Amt>3944184</ExcessFromYear4Amt>
        <ExcessFromYear3Amt>3807210</ExcessFromYear3Amt>
        <ExcessFromYear2Amt>6542504</ExcessFromYear2Amt>
        <ExcessFromYear1Amt>3055408</ExcessFromYear1Amt>
        <ExcessFromCurrentYearAmt>4412940</ExcessFromCurrentYearAmt>
      </UndistributedIncomeGrp>
      <SupplementaryInformationGrp>
        <ContributingManagerNm>JOHN J MACK</ContributingManagerNm>
        <ContributingManagerNm>CHRISTY K MACK</ContributingManagerNm>
        <OnlyContriToPreselectedInd>X</OnlyContriToPreselectedInd>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>MICROSOCIETY INC</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>3401 MARKET STREET SUITE 200</AddressLine1Txt>
            <CityNm>PHILADELPHIA</CityNm>
            <StateAbbreviationCd>PA</StateAbbreviationCd>
            <ZIPCd>19104</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>N/A</RecipientRelationshipTxt>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>GENERAL PURPOSE OR EDUCATIONAL</GrantOrContributionPurposeTxt>
          <Amt>182000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>HEALTHY US COLLABORATIVE INC</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>1300 19TH STREET NW SUITE 600</AddressLine1Txt>
            <CityNm>WASHINGTON</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>200361649</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>N/A</RecipientRelationshipTxt>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>GENERAL PURPOSE OR EDUCATIONAL</GrantOrContributionPurposeTxt>
          <Amt>3800000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>NYC POLICE FOUNDATION</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>850 3RD AVENUE 12TH FLOOR</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10022</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>N/A</RecipientRelationshipTxt>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>GENERAL PURPOSE OR EDUCATIONAL</GrantOrContributionPurposeTxt>
          <Amt>4555</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>NYC POLICE FOUNDATION</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>850 3RD AVENUE 12TH FLOOR</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10022</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>N/A</RecipientRelationshipTxt>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>GENERAL PURPOSE OR EDUCATIONALDESCRIPTION OF CONTRIBUTED PROPERTY: 9,900 SHARES MS STOCKBOOK VALUE OF CONTRIBUTION PROPERTY: 9,900 SHARES MS STOCK $99METHOD USED TO DETERMINE THE BOOK VALUE: COST BASISMETHOD USED TO DETERMINE FAIR MARKET VALUE: TREASURY REGULATIONS SECTION 20.2031-2DATE OF THE GIFTS: JULY 8, 2024</GrantOrContributionPurposeTxt>
          <Amt>995445</Amt>
        </GrantOrContributionPdDurYrGrp>
        <TotalGrantOrContriPdDurYrAmt>4982000</TotalGrantOrContriPdDurYrAmt>
        <TotalGrantOrContriApprvFutAmt>0</TotalGrantOrContriApprvFutAmt>
      </SupplementaryInformationGrp>
      <AnalysisIncomeProducingActyGrp>
        <DividendsAndInterestFromSecDtl>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>63630</ExclusionAmt>
        </DividendsAndInterestFromSecDtl>
        <GainSalesAstOthThanInvntryGrp>
          <ExclusionCd>18</ExclusionCd>
          <ExclusionAmt>2064070</ExclusionAmt>
        </GainSalesAstOthThanInvntryGrp>
        <SubtotalsIncmProducingActyGrp>
          <UnrelatedBusinessTaxblIncmAmt>0</UnrelatedBusinessTaxblIncmAmt>
          <ExclusionAmt>2127700</ExclusionAmt>
          <RelatedOrExemptFunctionIncmAmt>0</RelatedOrExemptFunctionIncmAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>2127700</TotalIncomeProducingActyAmt>
      </AnalysisIncomeProducingActyGrp>
      <TrnsfrTransRlnNonchrtblEOGrp>
        <TrnsfrOfCashToNonchrtblEOInd>0</TrnsfrOfCashToNonchrtblEOInd>
        <TrnsfrOtherAssetNonchrtblEOInd>0</TrnsfrOtherAssetNonchrtblEOInd>
        <SalesOrExchangesOfAssetsInd>0</SalesOrExchangesOfAssetsInd>
        <PurchaseOfAssetsNonchrtblEOInd>0</PurchaseOfAssetsNonchrtblEOInd>
        <RentalOfFacilitiesOthAssetsInd>0</RentalOfFacilitiesOthAssetsInd>
        <ReimbursementArrangementsInd>0</ReimbursementArrangementsInd>
        <LoansOrLoanGuaranteesInd>0</LoansOrLoanGuaranteesInd>
        <PerformanceOfServicesEtcInd>0</PerformanceOfServicesEtcInd>
        <SharingOfFacilitiesEtcInd>0</SharingOfFacilitiesEtcInd>
        <RelationshipsNonchrtblEOInd>0</RelationshipsNonchrtblEOInd>
      </TrnsfrTransRlnNonchrtblEOGrp>
    </IRS990PF>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <GeneralRuleInd>X</GeneralRuleInd>
      <ContributorInformationGrp>
        <ContributorNum>1</ContributorNum>
        <ContributorPersonNm>JOHN MACK</ContributorPersonNm>
        <ContributorUSAddress>
          <AddressLine1Txt>PO BOX 99</AddressLine1Txt>
          <CityNm>PURCHASE</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10577</ZIPCd>
        </ContributorUSAddress>
        <TotalContributionsAmt>5024711</TotalContributionsAmt>
        <NoncashContributionInd>X</NoncashContributionInd>
      </ContributorInformationGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>10,100 SHS MORGAN STANLEY (MS)</NoncashPropertyDesc>
        <FairMarketValueAmt>1005031</FairMarketValueAmt>
        <ReceivedDt>2024-07-05</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>13,951 SHS DRAFTKINGS CL A (DKNG)</NoncashPropertyDesc>
        <FairMarketValueAmt>526790</FairMarketValueAmt>
        <ReceivedDt>2024-09-12</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>208,300 SHS FULL TRUCK ALLIANCE ADR (YMM)</NoncashPropertyDesc>
        <FairMarketValueAmt>1491428</FairMarketValueAmt>
        <ReceivedDt>2024-09-13</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>8915 SHS AMAZON (AMZN)</NoncashPropertyDesc>
        <FairMarketValueAmt>2001462</FairMarketValueAmt>
        <ReceivedDt>2024-12-19</ReceivedDt>
      </NonCashPropertyContributionGrp>
    </IRS990ScheduleB>
    <AccountingFeesSchedule documentId="RetDoc2002200001">
      <AccountingFeesDetail>
        <CategoryTxt>ACCOUNTING FEES</CategoryTxt>
        <Amt>7400</Amt>
        <NetInvestmentIncomeAmt>3700</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>3700</DisbursementsCharitablePrpsAmt>
      </AccountingFeesDetail>
    </AccountingFeesSchedule>
    <InvestmentsCorpBondsSchedule documentId="RetDoc2044400001">
      <InvestmentsCorporateBondsGrp>
        <BondNm>MORGAN STANLEY</BondNm>
        <EOYBookValueAmt>100206</EOYBookValueAmt>
        <EOYFMVAmt>109212</EOYFMVAmt>
      </InvestmentsCorporateBondsGrp>
    </InvestmentsCorpBondsSchedule>
    <InvestmentsCorpStockSchedule documentId="RetDoc2018900001">
      <InvestmentsCorporateStockGrp>
        <StockNm>MORGAN STANLEY</StockNm>
        <EOYBookValueAmt>1071460</EOYBookValueAmt>
        <EOYFMVAmt>6758917</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <InvestmentsOtherSchedule2 documentId="RetDoc2018100001">
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>ARAVO SOLUTIONS PREFERRED SERIES D</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>AT COST</ListedAtCostOrFMVCd>
        <BookValueAmt>500000</BookValueAmt>
        <EOYFMVAmt>500000</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>MILLENNIUM INTERNATIONAL</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>AT COST</ListedAtCostOrFMVCd>
        <BookValueAmt>0</BookValueAmt>
        <EOYFMVAmt>7462703</EOYFMVAmt>
      </InvestmentsOtherGrp>
    </InvestmentsOtherSchedule2>
    <OtherDecreasesSchedule documentId="RetDoc2049800001">
      <OtherDecreasesDetail>
        <Desc>FMV VS. BASIS OF STOCK CONTRIBUTION RECEIVED</Desc>
        <Amt>3314083</Amt>
      </OtherDecreasesDetail>
    </OtherDecreasesSchedule>
    <OtherExpensesSchedule documentId="RetDoc2003200001">
      <OtherExpensesScheduleGrp>
        <Desc>FILING FEES</Desc>
        <RevenueAndExpensesPerBooksAmt>1227</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>614</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>613</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>MISCELLANEOUS</Desc>
        <RevenueAndExpensesPerBooksAmt>45</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>22</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>23</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherIncreasesSchedule documentId="RetDoc2049700001">
      <OtherIncreasesDetail>
        <Desc>FMV VS. BASIS OF STOCK DONATED</Desc>
        <Amt>995346</Amt>
      </OtherIncreasesDetail>
    </OtherIncreasesSchedule>
    <TaxesSchedule documentId="RetDoc2002500001">
      <TaxesDetail>
        <CategoryTxt>PRIOR YEAR EXTENSION PAYMENT</CategoryTxt>
        <Amt>80000</Amt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>