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      </PFQualifyingDistributionsGrp>
      <UndistributedIncomeGrp>
        <DistributableAsAdjustedAmt>4325343</DistributableAsAdjustedAmt>
        <UndistributedIncomePYAmt>4658747</UndistributedIncomePYAmt>
        <QualifyingDistributionsAmt>4804898</QualifyingDistributionsAmt>
        <AppliedToYear1Amt>4658747</AppliedToYear1Amt>
        <TreatedAsDistriFromCorpusAmt>0</TreatedAsDistriFromCorpusAmt>
        <AppliedToCurrentYearAmt>146151</AppliedToCurrentYearAmt>
        <UndistributedIncomeCYAmt>4179192</UndistributedIncomeCYAmt>
      </UndistributedIncomeGrp>
      <SupplementaryInformationGrp>
        <ApplicationSubmissionInfoGrp>
          <RecipientPersonNm>Alexander Margaret Stewart Trust</RecipientPersonNm>
          <RecipientUSAddress>
            <AddressLine1Txt>888 17th Street NW</AddressLine1Txt>
            <CityNm>Washington</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>200063321</ZIPCd>
          </RecipientUSAddress>
          <RecipientPhoneNum>2027859892</RecipientPhoneNum>
          <FormAndInfoAndMaterialsTxt>Application can be submitted in letter form. No specific information or materials need be attached.</FormAndInfoAndMaterialsTxt>
          <SubmissionDeadlinesTxt>No specific deadlines</SubmissionDeadlinesTxt>
          <RestrictionsOnAwardsTxt>Grants restricted to public charities described in IRC Sec 509(a)(1), (2), and (3), who provide services in the following areas: prevention of cancer; care of cancer patients; cancer research; support of cancer research &amp; education; care of physically or mentally ill children; rsch &amp; educ for the prevention of childhood diseases.</RestrictionsOnAwardsTxt>
        </ApplicationSubmissionInfoGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientPersonNm>see schedule attached</RecipientPersonNm>
          <RecipientUSAddress>
            <AddressLine1Txt>see schedule attached</AddressLine1Txt>
            <CityNm>see schedule</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20010</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>N/A</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>see sched attached</GrantOrContributionPurposeTxt>
          <Amt>4501744</Amt>
        </GrantOrContributionPdDurYrGrp>
        <TotalGrantOrContriPdDurYrAmt>4501744</TotalGrantOrContriPdDurYrAmt>
      </SupplementaryInformationGrp>
      <AnalysisIncomeProducingActyGrp>
        <IntOnSavAndTempCashInvstGrp>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>1121716</ExclusionAmt>
        </IntOnSavAndTempCashInvstGrp>
        <DividendsAndInterestFromSecDtl>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>938274</ExclusionAmt>
        </DividendsAndInterestFromSecDtl>
        <GainSalesAstOthThanInvntryGrp>
          <BusinessCd>900099</BusinessCd>
          <UnrelatedBusinessTaxblIncmAmt>27</UnrelatedBusinessTaxblIncmAmt>
          <ExclusionCd>18</ExclusionCd>
          <ExclusionAmt>-4891072</ExclusionAmt>
        </GainSalesAstOthThanInvntryGrp>
        <OtherRevenueDescribedGrp>
          <Desc>class action settlement</Desc>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>2530</ExclusionAmt>
        </OtherRevenueDescribedGrp>
        <OtherRevenueDescribedGrp>
          <Desc>K-1s-net loss UBTI</Desc>
          <BusinessCd>900000</BusinessCd>
          <UnrelatedBusinessTaxblIncmAmt>-34</UnrelatedBusinessTaxblIncmAmt>
        </OtherRevenueDescribedGrp>
        <OtherRevenueDescribedGrp>
          <Desc>K-1s-net ls-non-UBTI</Desc>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>-93493</ExclusionAmt>
        </OtherRevenueDescribedGrp>
        <OtherRevenueDescribedGrp>
          <Desc>K-1s-non-deduc exps</Desc>
          <RelatedOrExemptFunctionIncmAmt>-1590</RelatedOrExemptFunctionIncmAmt>
        </OtherRevenueDescribedGrp>
        <SubtotalsIncmProducingActyGrp>
          <UnrelatedBusinessTaxblIncmAmt>-7</UnrelatedBusinessTaxblIncmAmt>
          <ExclusionAmt>-2922045</ExclusionAmt>
          <RelatedOrExemptFunctionIncmAmt>-1590</RelatedOrExemptFunctionIncmAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>-2923642</TotalIncomeProducingActyAmt>
      </AnalysisIncomeProducingActyGrp>
      <TrnsfrTransRlnNonchrtblEOGrp>
        <TrnsfrOfCashToNonchrtblEOInd>false</TrnsfrOfCashToNonchrtblEOInd>
        <TrnsfrOtherAssetNonchrtblEOInd>false</TrnsfrOtherAssetNonchrtblEOInd>
        <SalesOrExchangesOfAssetsInd>false</SalesOrExchangesOfAssetsInd>
        <PurchaseOfAssetsNonchrtblEOInd>false</PurchaseOfAssetsNonchrtblEOInd>
        <RentalOfFacilitiesOthAssetsInd>false</RentalOfFacilitiesOthAssetsInd>
        <ReimbursementArrangementsInd>false</ReimbursementArrangementsInd>
        <LoansOrLoanGuaranteesInd>false</LoansOrLoanGuaranteesInd>
        <PerformanceOfServicesEtcInd>false</PerformanceOfServicesEtcInd>
        <SharingOfFacilitiesEtcInd>false</SharingOfFacilitiesEtcInd>
        <RelationshipsNonchrtblEOInd>false</RelationshipsNonchrtblEOInd>
      </TrnsfrTransRlnNonchrtblEOGrp>
    </IRS990PF>
    <AccountingFeesSchedule documentId="AccountingFeesSchedule" softwareId="23017517" softwareVersionNum="2023v5.1">
      <AccountingFeesDetail>
        <CategoryTxt>Michael J Cavanaugh P A</CategoryTxt>
        <Amt>21420</Amt>
        <NetInvestmentIncomeAmt>12852</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>8568</DisbursementsCharitablePrpsAmt>
      </AccountingFeesDetail>
    </AccountingFeesSchedule>
    <ExplnOfNonFilingWithAGStmt documentId="ExplanationOfNonFilingWithAGSt" softwareId="23017517" softwareVersionNum="2023v5.1">
      <ExplanationTxt>not required</ExplanationTxt>
    </ExplnOfNonFilingWithAGStmt>
    <InvestmentsCorpStockSchedule documentId="InvestmentsCorpStockSchedule" softwareId="23017517" softwareVersionNum="2023v5.1">
      <InvestmentsCorporateStockGrp>
        <StockNm>Various corp stocks-Fidelity a/c 2091</StockNm>
        <EOYBookValueAmt>13680671</EOYBookValueAmt>
        <EOYFMVAmt>13680671</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>Various stocks/bonds-Fidelity a/c 4257</StockNm>
        <EOYBookValueAmt>8449515</EOYBookValueAmt>
        <EOYFMVAmt>8449515</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>Rational/Pier88 Conv Sec</StockNm>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>Various corp stocks-Fidelity a/c 1852</StockNm>
        <EOYBookValueAmt>29819349</EOYBookValueAmt>
        <EOYFMVAmt>29819349</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>Ventyx BioSciences</StockNm>
        <EOYBookValueAmt>25997</EOYBookValueAmt>
        <EOYFMVAmt>25997</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <InvestmentsGovtObligationsSch documentId="InvestmentsGovtObligationsSche" softwareId="23017517" softwareVersionNum="2023v5.1">
      <USGovtObligationsBookVlEOYAmt>4927950</USGovtObligationsBookVlEOYAmt>
      <USGovtObligationsEOYFMVAmt>4927950</USGovtObligationsEOYFMVAmt>
    </InvestmentsGovtObligationsSch>
    <InvestmentsOtherSchedule2 documentId="InvestmentsOtherSchedule2" softwareId="23017517" softwareVersionNum="2023v5.1">
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>TIFF Real Estate Partners I</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>47910</BookValueAmt>
        <EOYFMVAmt>47910</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>GMO Forestry Fund 8-B LP</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>19475</BookValueAmt>
        <EOYFMVAmt>19475</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>TIFF Realty/Resources II</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>23903</BookValueAmt>
        <EOYFMVAmt>23903</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>NSV New Opportunities Fund LP</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>4408919</BookValueAmt>
        <EOYFMVAmt>4408919</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>New Sciences Ventures III</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>4369034</BookValueAmt>
        <EOYFMVAmt>4369034</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>NSV 2016 New Opportunities</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>1277588</BookValueAmt>
        <EOYFMVAmt>1277588</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>Pier 88 Gwth Equity I LP</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>40685</BookValueAmt>
        <EOYFMVAmt>40685</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>Pier 88 Gwth Equity II LP</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>298257</BookValueAmt>
        <EOYFMVAmt>298257</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>Pier 88 Gwth Equity III LLC</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>236233</BookValueAmt>
        <EOYFMVAmt>236233</EOYFMVAmt>
      </InvestmentsOtherGrp>
    </InvestmentsOtherSchedule2>
    <LandEtcSchedule2 documentId="LandEtcSchedule2" softwareId="23017517" softwareVersionNum="2023v5.1">
      <LandEtcGrp>
        <CategoryOrItemTxt>Machinery and Equipment</CategoryOrItemTxt>
        <CostOrOtherBasisAmt>6044</CostOrOtherBasisAmt>
        <AccumulatedDepreciationAmt>6044</AccumulatedDepreciationAmt>
      </LandEtcGrp>
    </LandEtcSchedule2>
    <OtherExpensesSchedule documentId="OtherExpensesSchedule" softwareId="23017517" softwareVersionNum="2023v5.1">
      <OtherExpensesScheduleGrp>
        <Desc>Grant software</Desc>
        <RevenueAndExpensesPerBooksAmt>11340</RevenueAndExpensesPerBooksAmt>
        <DisbursementsCharitablePrpsAmt>11340</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>Insurance</Desc>
        <RevenueAndExpensesPerBooksAmt>1526</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>320</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>1206</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>Office expenses</Desc>
        <RevenueAndExpensesPerBooksAmt>1886</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>396</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>1490</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherIncomeSchedule2 documentId="OtherIncomeSchedule2" softwareId="23017517" softwareVersionNum="2023v5.1">
      <OtherIncomeDetail>
        <Desc>class action settlement</Desc>
        <RevenueAndExpensesPerBooksAmt>2530</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>2530</NetInvestmentIncomeAmt>
      </OtherIncomeDetail>
      <OtherIncomeDetail>
        <Desc>K-1s-net loss UBTI</Desc>
        <RevenueAndExpensesPerBooksAmt>-34</RevenueAndExpensesPerBooksAmt>
      </OtherIncomeDetail>
      <OtherIncomeDetail>
        <Desc>K-1s-net ls-non-UBTI</Desc>
        <RevenueAndExpensesPerBooksAmt>-93493</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>-93493</NetInvestmentIncomeAmt>
      </OtherIncomeDetail>
      <OtherIncomeDetail>
        <Desc>K-1s-non-deduc exps</Desc>
        <RevenueAndExpensesPerBooksAmt>-1590</RevenueAndExpensesPerBooksAmt>
      </OtherIncomeDetail>
    </OtherIncomeSchedule2>
    <OtherIncreasesSchedule documentId="OtherIncreasesSchedule" softwareId="23017517" softwareVersionNum="2023v5.1">
      <OtherIncreasesDetail>
        <Desc>net incr in unrealized gain/loss on investments</Desc>
        <Amt>8793026</Amt>
      </OtherIncreasesDetail>
    </OtherIncreasesSchedule>
    <OtherProfessionalFeesSchedule documentId="OtherProfessionalFeesSchedule" softwareId="23017517" softwareVersionNum="2023v5.1">
      <OtherProfessionalFeesDetail>
        <CategoryTxt>Administration services</CategoryTxt>
        <Amt>60000</Amt>
        <NetInvestmentIncomeAmt>6000</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>54000</DisbursementsCharitablePrpsAmt>
      </OtherProfessionalFeesDetail>
      <OtherProfessionalFeesDetail>
        <CategoryTxt>Investment mgmt fees</CategoryTxt>
        <Amt>194856</Amt>
        <NetInvestmentIncomeAmt>194856</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </OtherProfessionalFeesDetail>
      <OtherProfessionalFeesDetail>
        <CategoryTxt>IT consultant</CategoryTxt>
        <Amt>1274</Amt>
        <NetInvestmentIncomeAmt>268</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>1006</DisbursementsCharitablePrpsAmt>
      </OtherProfessionalFeesDetail>
      <OtherProfessionalFeesDetail>
        <CategoryTxt>Rockefeller &amp; Co, Inc - fin mgmt</CategoryTxt>
        <Amt>46000</Amt>
        <NetInvestmentIncomeAmt>27600</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>18400</DisbursementsCharitablePrpsAmt>
      </OtherProfessionalFeesDetail>
    </OtherProfessionalFeesSchedule>
    <TaxesSchedule documentId="TaxesSchedule" softwareId="23017517" softwareVersionNum="2023v5.1">
      <TaxesDetail>
        <CategoryTxt>DC franchise tax on UBTI</CategoryTxt>
        <Amt>250</Amt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>Excise tax - form 990-PF</CategoryTxt>
        <Amt>22582</Amt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>Foreign taxes W/H - forms 1099-DIV</CategoryTxt>
        <Amt>50153</Amt>
        <NetInvestmentIncomeAmt>50153</NetInvestmentIncomeAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>