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        <BusinessNameLine1Txt>Costello Family Foundation Inc</BusinessNameLine1Txt>
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      <InCareOfNm>% Peter W Costello</InCareOfNm>
      <BusinessNameControlTxt>COST</BusinessNameControlTxt>
      <PhoneNum>6503808528</PhoneNum>
      <USAddress>
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      <PhoneNum>6503808528</PhoneNum>
      <SignatureDt>2025-11-16</SignatureDt>
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          <PropertyDesc>Capital Gain Distributions FY2024</PropertyDesc>
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          <BusinessNameLine1Txt>Peter W Costello</BusinessNameLine1Txt>
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            <ZIPCd>92037</ZIPCd>
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          <PersonNm>LESLIE A COSTELLO</PersonNm>
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        <GrantOrContributionPdDurYrGrp>
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            <BusinessNameLine1Txt>Room to Read</BusinessNameLine1Txt>
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            <CityNm>San Francisco</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
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          <RecipientFoundationStatusTxt>PC Public charity de</RecipientFoundationStatusTxt>
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      </TrnsfrTransRlnNonchrtblEOGrp>
    </IRS990PF>
    <GainLossSaleOtherAssetsSch documentId="GainLossSaleOtherAss-133-Copy1">
      <GainLossSaleOtherAssetGrp>
        <AssetDesc>Cap Gain Dist</AssetDesc>
        <AcquiredDt>2024-10</AcquiredDt>
        <HowAcquiredTxt>P</HowAcquiredTxt>
        <SoldDt>2025-10</SoldDt>
        <PurchaserNameGrp>
          <PersonNm>10312025</PersonNm>
        </PurchaserNameGrp>
        <GrossSalesPriceAmt>43443</GrossSalesPriceAmt>
        <TotalNetAmt>43443</TotalNetAmt>
      </GainLossSaleOtherAssetGrp>
    </GainLossSaleOtherAssetsSch>
    <InvestmentsCorpStockSchedule documentId="InvestmentsCorpStock-141-Copy1">
      <InvestmentsCorporateStockGrp>
        <StockNm>3516555 VGHAX Vanguard Health Care Fund</StockNm>
        <EOYBookValueAmt>264201</EOYBookValueAmt>
        <EOYFMVAmt>287549</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>11517748 VWIAX Vanguard Wellssley Income Fund</StockNm>
        <EOYBookValueAmt>646571</EOYBookValueAmt>
        <EOYFMVAmt>734256</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>11978814 OAKBX Oakmark Equity and Income Fund</StockNm>
        <EOYBookValueAmt>321245</EOYBookValueAmt>
        <EOYFMVAmt>453757</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>500 CVX Chevron</StockNm>
        <EOYBookValueAmt>35794</EOYBookValueAmt>
        <EOYFMVAmt>78860</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <OtherDecreasesSchedule documentId="OtherDecreasesSchedu-141-Copy1">
      <OtherDecreasesDetail>
        <Desc>Rounding Error</Desc>
        <Amt>1</Amt>
      </OtherDecreasesDetail>
    </OtherDecreasesSchedule>
    <TaxesSchedule documentId="TaxesSchedule-133-Copy1">
      <TaxesDetail>
        <CategoryTxt>FY2024 Estimated Tax paid</CategoryTxt>
        <Amt>1121</Amt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>Tax software expense</CategoryTxt>
        <Amt>125</Amt>
        <DisbursementsCharitablePrpsAmt>125</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>