<?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="2022v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2023-05-14T11:11:22-05:00</ReturnTs>
    <TaxPeriodEndDt>2022-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmName>
        <BusinessNameLine1Txt>PIONEER SQUARE ADVISORSLLC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1624 4TH AVENUE SUITE 400</AddressLine1Txt>
        <CityNm>SEATTLE</CityNm>
        <StateAbbreviationCd>WA</StateAbbreviationCd>
        <ZIPCd>98101</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990PF</ReturnTypeCd>
    <TaxPeriodBeginDt>2022-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>464323935</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>GIGI &amp; AVERELL H MORTIMER FOUNDATION</BusinessNameLine1Txt>
      </BusinessName>
      <InCareOfNm>% ARDEN ASSET MANAGEMENT INC</InCareOfNm>
      <BusinessNameControlTxt>GIGI</BusinessNameControlTxt>
      <PhoneNum>2124462002</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO Box 1022</AddressLine1Txt>
        <CityNm>Harriman</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>10926</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>AVERELL MORTIMER</PersonNm>
      <PersonTitleTxt>PRESIDENT</PersonTitleTxt>
      <PhoneNum>2124462043</PhoneNum>
      <SignatureDt>2023-05-12</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>AVERELL</PersonFirstNm>
        <PersonLastNm>MORTIMER</PersonLastNm>
      </PersonFullName>
      <SSN>999009999</SSN>
    </SigningOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>KENNETH RAGSDALE</PreparerPersonNm>
      <PTIN>P00295413</PTIN>
      <PhoneNum>2068384880</PhoneNum>
    </PreparerPersonGrp>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>3</TrustedCustomerCd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2022</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="10">
    <IRS990PF documentId="IRS990PF">
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <FMVAssetsEOYAmt>565506</FMVAssetsEOYAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AnalysisOfRevenueAndExpenses>
        <ContriRcvdRevAndExpnssAmt>214131</ContriRcvdRevAndExpnssAmt>
        <InterestOnSavRevAndExpnssAmt>118</InterestOnSavRevAndExpnssAmt>
        <InterestOnSavNetInvstIncmAmt>118</InterestOnSavNetInvstIncmAmt>
        <DividendsRevAndExpnssAmt>5048</DividendsRevAndExpnssAmt>
        <DividendsNetInvstIncmAmt>5035</DividendsNetInvstIncmAmt>
        <NetGainSaleAstRevAndExpnssAmt>-28991</NetGainSaleAstRevAndExpnssAmt>
        <GrossSalesPriceAmt>59208</GrossSalesPriceAmt>
        <CapGainNetIncmNetInvstIncmAmt>0</CapGainNetIncmNetInvstIncmAmt>
        <NetSTCapitalGainAdjNetIncmAmt>0</NetSTCapitalGainAdjNetIncmAmt>
        <OtherIncomeRevAndExpnssAmt referenceDocumentId="OtherIncomeSch2">-86874</OtherIncomeRevAndExpnssAmt>
        <OtherIncomeNetInvstIncmAmt>0</OtherIncomeNetInvstIncmAmt>
        <TotalRevAndExpnssAmt>103432</TotalRevAndExpnssAmt>
        <TotalNetInvstIncmAmt>5153</TotalNetInvstIncmAmt>
        <TotalAdjNetIncmAmt>0</TotalAdjNetIncmAmt>
        <CompOfcrDirTrstRevAndExpnssAmt>0</CompOfcrDirTrstRevAndExpnssAmt>
        <AccountingFeesRevAndExpnssAmt referenceDocumentId="AccountingFeesSch">1500</AccountingFeesRevAndExpnssAmt>
        <AccountingFeesNetInvstIncmAmt>0</AccountingFeesNetInvstIncmAmt>
        <AccountingFeesAdjNetIncmAmt>0</AccountingFeesAdjNetIncmAmt>
        <AccountingFeesChrtblPrpsAmt>0</AccountingFeesChrtblPrpsAmt>
        <OtherProfFeesRevAndExpnssAmt referenceDocumentId="OthProfFeesSch">1174</OtherProfFeesRevAndExpnssAmt>
        <OtherProfFeesNetInvstIncmAmt>1174</OtherProfFeesNetInvstIncmAmt>
        <TaxesRevAndExpnssAmt referenceDocumentId="TaxesSchedule">83</TaxesRevAndExpnssAmt>
        <TaxesNetInvstIncmAmt>8</TaxesNetInvstIncmAmt>
        <OtherExpensesRevAndExpnssAmt referenceDocumentId="OtherExpensesSch">583</OtherExpensesRevAndExpnssAmt>
        <TotOprExpensesRevAndExpnssAmt>3340</TotOprExpensesRevAndExpnssAmt>
        <TotOprExpensesNetInvstIncmAmt>1182</TotOprExpensesNetInvstIncmAmt>
        <TotOprExpensesAdjNetIncmAmt>0</TotOprExpensesAdjNetIncmAmt>
        <TotOprExpensesDsbrsChrtblAmt>0</TotOprExpensesDsbrsChrtblAmt>
        <ContriPaidRevAndExpnssAmt>0</ContriPaidRevAndExpnssAmt>
        <ContriPaidDsbrsChrtblAmt>0</ContriPaidDsbrsChrtblAmt>
        <TotalExpensesRevAndExpnssAmt>3340</TotalExpensesRevAndExpnssAmt>
        <TotalExpensesNetInvstIncmAmt>1182</TotalExpensesNetInvstIncmAmt>
        <TotalExpensesAdjNetIncmAmt>0</TotalExpensesAdjNetIncmAmt>
        <TotalExpensesDsbrsChrtblAmt>0</TotalExpensesDsbrsChrtblAmt>
        <ExcessRevenueOverExpensesAmt>100092</ExcessRevenueOverExpensesAmt>
        <NetInvestmentIncomeAmt>3971</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
      </AnalysisOfRevenueAndExpenses>
      <Form990PFBalanceSheetsGrp>
        <CashBOYAmt>39452</CashBOYAmt>
        <CashEOYAmt>257449</CashEOYAmt>
        <CashEOYFMVAmt>257449</CashEOYFMVAmt>
        <CorporateStockBOYAmt>425962</CorporateStockBOYAmt>
        <CorporateStockEOYAmt referenceDocumentId="InvestCorpStockSch">305287</CorporateStockEOYAmt>
        <CorporateStockEOYFMVAmt>305287</CorporateStockEOYFMVAmt>
        <OtherAssetsBOYAmt referenceDocumentId="OtherAssetsSch">0</OtherAssetsBOYAmt>
        <OtherAssetsEOYAmt referenceDocumentId="OtherAssetsSch">2770</OtherAssetsEOYAmt>
        <OtherAssetsEOYFMVAmt referenceDocumentId="OtherAssetsSch">2770</OtherAssetsEOYFMVAmt>
        <TotalAssetsBOYAmt>465414</TotalAssetsBOYAmt>
        <TotalAssetsEOYAmt>565506</TotalAssetsEOYAmt>
        <TotalAssetsEOYFMVAmt>565506</TotalAssetsEOYFMVAmt>
        <AccountsPayableBOYAmt>58</AccountsPayableBOYAmt>
        <AccountsPayableEOYAmt>58</AccountsPayableEOYAmt>
        <TotalLiabilitiesBOYAmt>58</TotalLiabilitiesBOYAmt>
        <TotalLiabilitiesEOYAmt>58</TotalLiabilitiesEOYAmt>
        <OrgDoesNotFollowFASB117Ind>X</OrgDoesNotFollowFASB117Ind>
        <CapitalStockBOYAmt>465356</CapitalStockBOYAmt>
        <CapitalStockEOYAmt>565448</CapitalStockEOYAmt>
        <TotNetAstOrFundBalancesBOYAmt>465356</TotNetAstOrFundBalancesBOYAmt>
        <TotNetAstOrFundBalancesEOYAmt>565448</TotNetAstOrFundBalancesEOYAmt>
        <TotalLiabilitiesNetAstBOYAmt>465414</TotalLiabilitiesNetAstBOYAmt>
        <TotalLiabilitiesNetAstEOYAmt>565506</TotalLiabilitiesNetAstEOYAmt>
      </Form990PFBalanceSheetsGrp>
      <ChgInNetAssetsFundBalancesGrp>
        <TotNetAstOrFundBalancesBOYAmt>465356</TotNetAstOrFundBalancesBOYAmt>
        <ExcessRevenueOverExpensesAmt>100092</ExcessRevenueOverExpensesAmt>
        <SubtotalAmt>565448</SubtotalAmt>
        <TotNetAstOrFundBalancesEOYAmt>565448</TotNetAstOrFundBalancesEOYAmt>
      </ChgInNetAssetsFundBalancesGrp>
      <CapGainsLossTxInvstIncmDetail>
        <CapGainsLossTxInvstIncmGrp>
          <PropertyDesc>SEE ATTACHMENT D-1</PropertyDesc>
          <HowAcquiredCd>P</HowAcquiredCd>
          <AcquiredDt>2022-01-01</AcquiredDt>
          <GrossSalesPriceAmt>49420</GrossSalesPriceAmt>
          <CostOrOtherBasisAmt>77831</CostOrOtherBasisAmt>
          <GainOrLossAmt>-26892</GainOrLossAmt>
          <GainsMinusExcessOrLossesAmt>-28411</GainsMinusExcessOrLossesAmt>
        </CapGainsLossTxInvstIncmGrp>
        <CapGainsLossTxInvstIncmGrp>
          <PropertyDesc>SEE ATTACHMENT D-1</PropertyDesc>
          <HowAcquiredCd>P</HowAcquiredCd>
          <AcquiredDt>2021-11-01</AcquiredDt>
          <GrossSalesPriceAmt>1035</GrossSalesPriceAmt>
          <CostOrOtherBasisAmt>1308</CostOrOtherBasisAmt>
          <GainOrLossAmt>-273</GainOrLossAmt>
          <GainsMinusExcessOrLossesAmt>-273</GainsMinusExcessOrLossesAmt>
        </CapGainsLossTxInvstIncmGrp>
        <CapGainsLossTxInvstIncmGrp>
          <PropertyDesc>280 SHS FINANCIAL SELECT SECTOR SPDR</PropertyDesc>
          <HowAcquiredCd>P</HowAcquiredCd>
          <AcquiredDt>2021-05-14</AcquiredDt>
          <SoldDt>2022-06-14</SoldDt>
          <GrossSalesPriceAmt>8754</GrossSalesPriceAmt>
          <CostOrOtherBasisAmt>10578</CostOrOtherBasisAmt>
          <GainOrLossAmt>-1824</GainOrLossAmt>
          <GainsMinusExcessOrLossesAmt>-1824</GainsMinusExcessOrLossesAmt>
        </CapGainsLossTxInvstIncmGrp>
        <CapitalGainNetIncomeAmt>-28989</CapitalGainNetIncomeAmt>
        <NetShortTermCapitalGainLossAmt>0</NetShortTermCapitalGainLossAmt>
      </CapGainsLossTxInvstIncmDetail>
      <ExciseTaxBasedOnInvstIncmGrp>
        <InvestmentIncomeExciseTaxAmt>55</InvestmentIncomeExciseTaxAmt>
        <SubtotalAmt>55</SubtotalAmt>
        <TaxBasedOnInvestmentIncomeAmt>55</TaxBasedOnInvestmentIncomeAmt>
        <ExemptFrgnOrgTaxWthldAtSrceAmt>0</ExemptFrgnOrgTaxWthldAtSrceAmt>
        <TotalPaymentsAndCreditsAmt>0</TotalPaymentsAndCreditsAmt>
        <TaxDueAmt>55</TaxDueAmt>
      </ExciseTaxBasedOnInvstIncmGrp>
      <StatementsRegardingActyGrp>
        <LegislativePoliticalActyInd referenceDocumentId="BinaryAttach">false</LegislativePoliticalActyInd>
        <MoreThan100SpentInd>false</MoreThan100SpentInd>
        <Form1120POLFiledInd>false</Form1120POLFiledInd>
        <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
        <ChangesToArticlesOrBylawsInd referenceDocumentId="BinaryAttach">false</ChangesToArticlesOrBylawsInd>
        <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
        <OrganizationDissolvedEtcInd referenceDocumentId="BinaryAttach">false</OrganizationDissolvedEtcInd>
        <Section508eRqrSatisfiedInd>true</Section508eRqrSatisfiedInd>
        <AtLeast5000InAssetsInd>true</AtLeast5000InAssetsInd>
        <OrgReportOrRegisterStateCd>NY</OrgReportOrRegisterStateCd>
        <Form990PFFiledWithAttyGenInd>true</Form990PFFiledWithAttyGenInd>
        <PrivateOperatingFoundationInd>false</PrivateOperatingFoundationInd>
        <NewSubstantialContributorsInd>true</NewSubstantialContributorsInd>
        <OwnControlledEntityInd>false</OwnControlledEntityInd>
        <DonorAdvisedFundInd>false</DonorAdvisedFundInd>
        <ComplyWithPublicInspRqrInd>true</ComplyWithPublicInspRqrInd>
        <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
        <PersonsWithBooksName>
          <BusinessNameLine1Txt>ARDEN ASSET MANAGEMENT INC</BusinessNameLine1Txt>
        </PersonsWithBooksName>
        <PhoneNum>2124462043</PhoneNum>
        <LocationOfBooksUSAddress>
          <AddressLine1Txt>PO BOX 1022</AddressLine1Txt>
          <CityNm>Harriman</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10926</ZIPCd>
        </LocationOfBooksUSAddress>
        <ForeignAccountsQuestionInd>false</ForeignAccountsQuestionInd>
      </StatementsRegardingActyGrp>
      <StatementsRegardingActy4720Grp>
        <SaleOrExchDisqualifiedPrsnInd>false</SaleOrExchDisqualifiedPrsnInd>
        <BrrwOrLendDisqualifiedPrsnInd>true</BrrwOrLendDisqualifiedPrsnInd>
        <FurnGoodsDisqualifiedPrsnInd>false</FurnGoodsDisqualifiedPrsnInd>
        <PayCompDisqualifiedPrsnInd>false</PayCompDisqualifiedPrsnInd>
        <TransferAstDisqualifiedPrsnInd>false</TransferAstDisqualifiedPrsnInd>
        <PaymentToGovernmentOfficialInd>false</PaymentToGovernmentOfficialInd>
        <ActsFailToQlfyAsExceptionsInd>true</ActsFailToQlfyAsExceptionsInd>
        <UncorrectedPriorActsInd>false</UncorrectedPriorActsInd>
        <UndistributedIncomePYInd>false</UndistributedIncomePYInd>
        <BusinessHoldingsInd>false</BusinessHoldingsInd>
        <JeopardyInvestmentsInd>false</JeopardyInvestmentsInd>
        <UncorrectedPYJeopardyInvstInd>false</UncorrectedPYJeopardyInvstInd>
        <InfluenceLegislationInd>false</InfluenceLegislationInd>
        <InfluenceElectionInd>false</InfluenceElectionInd>
        <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
        <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
        <NoncharitablePurposeInd>false</NoncharitablePurposeInd>
        <RcvFndsToPayPrsnlBnftCntrctInd>false</RcvFndsToPayPrsnlBnftCntrctInd>
        <PayPremiumsPrsnlBnftCntrctInd>false</PayPremiumsPrsnlBnftCntrctInd>
        <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
        <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      </StatementsRegardingActy4720Grp>
      <OfficerDirTrstKeyEmplInfoGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>JEAN M MORTIMER</PersonNm>
          <USAddress>
            <AddressLine1Txt>C/O ARDEN ASSET MANAGEMENT INC</AddressLine1Txt>
            <AddressLine2Txt>PO Box 1022</AddressLine2Txt>
            <CityNm>Harriman</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10926</ZIPCd>
          </USAddress>
          <TitleTxt>CHAIRMAN</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>AVERELL H MORTIMER</PersonNm>
          <USAddress>
            <AddressLine1Txt>C/O ARDEN ASSET MANAGEMENT INC</AddressLine1Txt>
            <AddressLine2Txt>PO Box 1022</AddressLine2Txt>
            <CityNm>Harriman</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10926</ZIPCd>
          </USAddress>
          <TitleTxt>PRESIDENT/TREASURER</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>MAXWELL H MORTIMER</PersonNm>
          <USAddress>
            <AddressLine1Txt>C/O ARDEN ASSET MANAGEMENT INC</AddressLine1Txt>
            <AddressLine2Txt>PO Box 1022</AddressLine2Txt>
            <CityNm>Harriman</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10926</ZIPCd>
          </USAddress>
          <TitleTxt>SECRETARY</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>HUME R STEYER</PersonNm>
          <USAddress>
            <AddressLine1Txt>C/O ARDEN ASSET MANAGEMENT INC</AddressLine1Txt>
            <AddressLine2Txt>PO Box 1022</AddressLine2Txt>
            <CityNm>Harriman</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10926</ZIPCd>
          </USAddress>
          <TitleTxt>ASSISTANT SECRETARY</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
      </OfficerDirTrstKeyEmplInfoGrp>
      <SummaryOfDirectChrtblActyGrp>
        <Description1Txt>NONE</Description1Txt>
      </SummaryOfDirectChrtblActyGrp>
      <SumOfProgramRelatedInvstGrp />
      <MinimumInvestmentReturnGrp>
        <AverageMonthlyFMVOfSecAmt>330100</AverageMonthlyFMVOfSecAmt>
        <AverageMonthlyCashBalancesAmt>78884</AverageMonthlyCashBalancesAmt>
        <FMVAllOtherNoncharitableAstAmt>0</FMVAllOtherNoncharitableAstAmt>
        <TotalFMVOfUnusedAssetsAmt>408984</TotalFMVOfUnusedAssetsAmt>
        <AcquisitionIndebtednessAmt>0</AcquisitionIndebtednessAmt>
        <AdjustedTotalFMVOfUnusedAstAmt>408984</AdjustedTotalFMVOfUnusedAstAmt>
        <CashDeemedCharitableAmt>6135</CashDeemedCharitableAmt>
        <NetVlNoncharitableAssetsAmt>402849</NetVlNoncharitableAssetsAmt>
        <MinimumInvestmentReturnAmt>20142</MinimumInvestmentReturnAmt>
      </MinimumInvestmentReturnGrp>
      <DistributableAmountGrp>
        <MinimumInvestmentReturnAmt>20142</MinimumInvestmentReturnAmt>
        <TaxBasedOnInvestmentIncomeAmt>55</TaxBasedOnInvestmentIncomeAmt>
        <TotalTaxAmt>55</TotalTaxAmt>
        <DistributableBeforeAdjAmt>20087</DistributableBeforeAdjAmt>
        <DistributableBeforeDedAmt>20087</DistributableBeforeDedAmt>
        <DistributableAsAdjustedAmt>20087</DistributableAsAdjustedAmt>
      </DistributableAmountGrp>
      <PFQualifyingDistributionsGrp>
        <ExpensesAndContributionsAmt>0</ExpensesAndContributionsAmt>
        <ProgramRelatedInvstTotalAmt>0</ProgramRelatedInvstTotalAmt>
        <CharitableAssetsAcquisPaidAmt>0</CharitableAssetsAcquisPaidAmt>
        <SetAsideSuitabilityTestAmt>0</SetAsideSuitabilityTestAmt>
        <SetAsideCashDistriTestAmt>0</SetAsideCashDistriTestAmt>
        <QualifyingDistributionsAmt>0</QualifyingDistributionsAmt>
      </PFQualifyingDistributionsGrp>
      <UndistributedIncomeGrp>
        <DistributableAsAdjustedAmt>20087</DistributableAsAdjustedAmt>
        <UndistributedIncomePYAmt>0</UndistributedIncomePYAmt>
        <PriorYear1Yr>2020</PriorYear1Yr>
        <PriorYear2Yr>2019</PriorYear2Yr>
        <PriorYear3Yr>2018</PriorYear3Yr>
        <TotalForPriorYearsAmt>0</TotalForPriorYearsAmt>
        <ExcessDistributionCyovYr5Amt>213067</ExcessDistributionCyovYr5Amt>
        <ExcessDistributionCyovYr4Amt>109650</ExcessDistributionCyovYr4Amt>
        <ExcessDistributionCyovYr3Amt>2396</ExcessDistributionCyovYr3Amt>
        <TotalExcessDistributionCyovAmt>325113</TotalExcessDistributionCyovAmt>
        <QualifyingDistributionsAmt>0</QualifyingDistributionsAmt>
        <AppliedToYear1Amt>0</AppliedToYear1Amt>
        <RemainingDistriFromCorpusAmt>0</RemainingDistriFromCorpusAmt>
        <ExcessDistriCyovAppCYCorpusAmt>20087</ExcessDistriCyovAppCYCorpusAmt>
        <ExcessDistributionCyovAppCYAmt>20087</ExcessDistributionCyovAppCYAmt>
        <TotalCorpusAmt>305026</TotalCorpusAmt>
        <PriorYearUndistributedIncmAmt>0</PriorYearUndistributedIncmAmt>
        <Taxable1Amt>0</Taxable1Amt>
        <Taxable2Amt>0</Taxable2Amt>
        <UndistributedIncomeCYAmt>0</UndistributedIncomeCYAmt>
        <ExcessDistriCyovFromYr5Amt>192980</ExcessDistriCyovFromYr5Amt>
        <ExcessDistriCyovToNextYrAmt>112046</ExcessDistriCyovToNextYrAmt>
        <ExcessFromYear4Amt>109650</ExcessFromYear4Amt>
        <ExcessFromYear3Amt>2396</ExcessFromYear3Amt>
      </UndistributedIncomeGrp>
      <PrivateOperatingFoundationsGrp></PrivateOperatingFoundationsGrp>
      <SupplementaryInformationGrp>
        <ContributingManagerNm>AVERELL MORTIMER AND JEAN MORTIMER</ContributingManagerNm>
        <OnlyContriToPreselectedInd>X</OnlyContriToPreselectedInd>
      </SupplementaryInformationGrp>
      <AnalysisIncomeProducingActyGrp>
        <FeesContractsFromGovtAgGrp />
        <MembershipDuesAndAssmntGrp />
        <IntOnSavAndTempCashInvstGrp>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>118</ExclusionAmt>
        </IntOnSavAndTempCashInvstGrp>
        <DividendsAndInterestFromSecDtl>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>5048</ExclusionAmt>
        </DividendsAndInterestFromSecDtl>
        <NetRntlIncmReDebtFincdPropGrp />
        <NetRntlIncmReNotDebtFincdProp />
        <NetRentalIncomePersonalPropGrp />
        <OtherInvestmentIncomeGrp />
        <GainSalesAstOthThanInvntryGrp>
          <ExclusionCd>18</ExclusionCd>
          <ExclusionAmt>-28991</ExclusionAmt>
        </GainSalesAstOthThanInvntryGrp>
        <NetIncomeLossFromSpecialEvtGrp />
        <GrossProfitLossSlsOfInvntryGrp />
        <OtherRevenueDescribedGrp>
          <Desc>UNREALIZED GAIN (LOSS)</Desc>
          <ExclusionCd>18</ExclusionCd>
          <ExclusionAmt>-86874</ExclusionAmt>
        </OtherRevenueDescribedGrp>
        <SubtotalsIncmProducingActyGrp>
          <ExclusionAmt>-110699</ExclusionAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>-110699</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>
    <IRS990ScheduleB documentId="IRS990ScheduleB">
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <GeneralRuleInd>X</GeneralRuleInd>
      <ContributorInformationGrp>
        <ContributorNum>1</ContributorNum>
        <ContributorPersonNm>A MORTIMER GRANTOR - M FAMILY 20</ContributorPersonNm>
        <ContributorUSAddress>
          <AddressLine1Txt>PO BOX 1022</AddressLine1Txt>
          <CityNm>HARRIMAN</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10926</ZIPCd>
        </ContributorUSAddress>
        <TotalContributionsAmt>214131</TotalContributionsAmt>
        <PersonContributionInd>X</PersonContributionInd>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <AccountingFeesSchedule documentId="AccountingFeesSch">
      <AccountingFeesDetail>
        <CategoryTxt>ACCOUNTING &amp; FINANCIAL REPORTS</CategoryTxt>
        <Amt>1500</Amt>
      </AccountingFeesDetail>
    </AccountingFeesSchedule>
    <DepreciationSchedule documentId="DepreciationSch" />
    <InvestmentsCorpStockSchedule documentId="InvestCorpStockSch">
      <InvestmentsCorporateStockGrp>
        <StockNm>JP MORGAN</StockNm>
        <EOYBookValueAmt>305287</EOYBookValueAmt>
        <EOYFMVAmt>305287</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <OtherAssetsSchedule documentId="OtherAssetsSch">
      <OtherAssetsScheduleGrp>
        <Desc>OTHER RECEIVABLES</Desc>
        <BOYBookValueAmt>0</BOYBookValueAmt>
        <EOYBookValueAmt>2770</EOYBookValueAmt>
        <EOYFMVAmt>2770</EOYFMVAmt>
      </OtherAssetsScheduleGrp>
    </OtherAssetsSchedule>
    <OtherExpensesSchedule documentId="OtherExpensesSch">
      <OtherExpensesScheduleGrp>
        <Desc>ANNUAL FILING FEES</Desc>
        <RevenueAndExpensesPerBooksAmt>500</RevenueAndExpensesPerBooksAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>BANK FEES</Desc>
        <RevenueAndExpensesPerBooksAmt>83</RevenueAndExpensesPerBooksAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherIncomeSchedule2 documentId="OtherIncomeSch2">
      <OtherIncomeDetail>
        <Desc>OTHER INCOME</Desc>
        <RevenueAndExpensesPerBooksAmt>-86874</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
      </OtherIncomeDetail>
    </OtherIncomeSchedule2>
    <OtherProfessionalFeesSchedule documentId="OthProfFeesSch">
      <OtherProfessionalFeesDetail>
        <CategoryTxt>CONSULTING FEES</CategoryTxt>
        <Amt>1174</Amt>
        <NetInvestmentIncomeAmt>1174</NetInvestmentIncomeAmt>
      </OtherProfessionalFeesDetail>
    </OtherProfessionalFeesSchedule>
    <TaxesSchedule documentId="TaxesSchedule">
      <TaxesDetail>
        <CategoryTxt>FEDERAL TAX</CategoryTxt>
        <Amt>83</Amt>
        <NetInvestmentIncomeAmt>8</NetInvestmentIncomeAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>
