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        <NoncashPropertyDesc>198 SHAREs BERKSHIRE HATHAWAY INC. CLASS A SECURITIES</NoncashPropertyDesc>
        <FairMarketValueAmt>120912264</FairMarketValueAmt>
        <ReceivedDt>2024-07-02</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>2</ContributorNum>
        <NoncashPropertyDesc>1,213 SHARES OF ALIBABA GROUP HOLDING 1,125 SHARES OF BERKSHIRE HATHAWAY INC. CLASS B SECURITIES 244</NoncashPropertyDesc>
        <FairMarketValueAmt>2816305</FairMarketValueAmt>
        <ReceivedDt>2024-10-28</ReceivedDt>
      </NonCashPropertyContributionGrp>
    </IRS990ScheduleB>
    <AccountingFeesSchedule documentId="AccountingFeesSch">
      <AccountingFeesDetail>
        <CategoryTxt>ACCOUNTING FEES</CategoryTxt>
        <Amt>3566</Amt>
        <NetInvestmentIncomeAmt>1783</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>1783</DisbursementsCharitablePrpsAmt>
      </AccountingFeesDetail>
    </AccountingFeesSchedule>
    <DepreciationSchedule documentId="DepreciationSch" />
    <InvestmentsCorpStockSchedule documentId="InvestCorpStockSch">
      <InvestmentsCorporateStockGrp>
        <StockNm>133 SHS BERKSHIRE HATH. CL A</StockNm>
        <EOYBookValueAmt>100734200</EOYBookValueAmt>
        <EOYFMVAmt>100734200</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>1,750 SHS BERKSHIRE HATH. CL B</StockNm>
        <EOYBookValueAmt>881930</EOYBookValueAmt>
        <EOYFMVAmt>881930</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>2,446 SHS COSTCO</StockNm>
        <EOYBookValueAmt>2544280</EOYBookValueAmt>
        <EOYFMVAmt>2544280</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
      <InvestmentsCorporateStockGrp>
        <StockNm>1,213 SHS ALIBABA</StockNm>
        <EOYBookValueAmt>138089</EOYBookValueAmt>
        <EOYFMVAmt>138089</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <OtherExpensesSchedule documentId="OtherExpensesSch">
      <OtherExpensesScheduleGrp>
        <Desc>BANK SERVICE FEE</Desc>
        <RevenueAndExpensesPerBooksAmt>174</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>174</NetInvestmentIncomeAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherIncreasesSchedule documentId="OtherIncreasesSch">
      <OtherIncreasesDetail>
        <Desc>UNREALIZED GAIN ON DONATED SECURITIES</Desc>
        <Amt>11569749</Amt>
      </OtherIncreasesDetail>
      <OtherIncreasesDetail>
        <Desc>UNREALIZED GAIN ON INVESTMENTS</Desc>
        <Amt>20565128</Amt>
      </OtherIncreasesDetail>
    </OtherIncreasesSchedule>
    <SubstantialContributorsSch documentId="SubsContributorsSch">
      <SubstantialContributorDetail>
        <PersonNm>THE SURVIVORS TRUST OF THE MUNGER C</PersonNm>
        <USAddress>
          <AddressLine1Txt>350 W COLORADO BLVD FIFTH FL</AddressLine1Txt>
          <CityNm>PASADENA</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>91105</ZIPCd>
        </USAddress>
      </SubstantialContributorDetail>
      <SubstantialContributorDetail>
        <PersonNm>THE ALFRED C MUNGER FOUNDATION</PersonNm>
        <USAddress>
          <AddressLine1Txt>350 W COLORADO BLVD FIFTH FL</AddressLine1Txt>
          <CityNm>PASADENA</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>91105</ZIPCd>
        </USAddress>
      </SubstantialContributorDetail>
    </SubstantialContributorsSch>
    <TaxesSchedule documentId="TaxesSchedule">
      <TaxesDetail>
        <CategoryTxt>FEDERAL EXCISE TAXES</CategoryTxt>
        <Amt>500</Amt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>FILING FEES</CategoryTxt>
        <Amt>25</Amt>
        <DisbursementsCharitablePrpsAmt>25</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>