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        <NamePerson>Ronald K Linde</NamePerson>
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        <NamePerson>A Michael Lipper</NamePerson>
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        <NamePerson>Shirley M Malcom</NamePerson>
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        <NamePerson>Richard N Merkin</NamePerson>
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        <NamePerson>Patrick H Nettles Jr</NamePerson>
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        <NamePerson>Pedro J Pizarro</NamePerson>
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        <NamePerson>Gayle E Wilson</NamePerson>
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        <NamePerson>Firouz M Naderi</NamePerson>
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        <Title>David Morrisroe Professor</Title>
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        <NamePerson>DAVID BALTIMORE</NamePerson>
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        <NamePerson>JOHN F HALL</NamePerson>
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        <OtherCompensation>43971</OtherCompensation>
      </Form990PartVIISectionA>
      <TotalReportableCompFromOrg>10704009</TotalReportableCompFromOrg>
      <TotalReportableCompFrmRltdOrgs>0</TotalReportableCompFrmRltdOrgs>
      <TotalOtherCompensation>1251763</TotalOtherCompensation>
      <NumberIndividualsGT100K>3786</NumberIndividualsGT100K>
      <FormersListed>true</FormersListed>
      <TotalCompGT150K>true</TotalCompGT150K>
      <CompensationFromOtherSources>false</CompensationFromOtherSources>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>Lockheed Martin Corporation</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>2401 e el segundo blvd 6th</AddressLine1>
            <City>EL SEGUNDO</City>
            <State>CA</State>
            <ZIPCode>902454655</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>Aerospace</DescriptionOfServices>
        <Compensation>169637075</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>itt corporation</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>5009 centennial blvd</AddressLine1>
            <City>COLORADO SPRINGS</City>
            <State>CO</State>
            <ZIPCode>809162153</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>OPERATING DSN</DescriptionOfServices>
        <Compensation>54584083</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>blue cross of california</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>21555 oxnard street ac-106</AddressLine1>
            <City>WOODLAND HILLS</City>
            <State>CA</State>
            <ZIPCode>913674943</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>healthcare</DescriptionOfServices>
        <Compensation>65230246</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>RAYTHEON</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>2000 EAST EL SEGUNDO BLVD</AddressLine1>
            <City>EL SEGUNDO</City>
            <State>CA</State>
            <ZIPCode>902450902</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>DEFENSE TECHNOLOGY</DescriptionOfServices>
        <Compensation>25505808</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>lockheed martin integrated systems</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>7375 executive place</AddressLine1>
            <City>SEABROOK</City>
            <State>MD</State>
            <ZIPCode>207062278</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>aerospace</DescriptionOfServices>
        <Compensation>30062422</Compensation>
      </ContractorCompensation>
      <NumberOfContractorsGT100K>594</NumberOfContractorsGT100K>
      <GovernmentGrants>307165000</GovernmentGrants>
      <AllOtherContributions>90935000</AllOtherContributions>
      <NoncashContributions>5469727</NoncashContributions>
      <TotalContributions>398100000</TotalContributions>
      <ProgramServiceRevenue>
        <Description>JPL AND OTHER AWARDS</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>1728902000</TotalRevenueColumn>
        <ExclusionAmount>1728902000</ExclusionAmount>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>STUDENT TUITION</Description>
        <BusinessCode>611600</BusinessCode>
        <TotalRevenueColumn>71918000</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>71918000</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>USE OF FACILITIES</Description>
        <BusinessCode>900099</BusinessCode>
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        <RelatedOrExemptFunctionIncome>18088000</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>AUXILIARY ENTERPRISES</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>18926000</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>14996000</RelatedOrExemptFunctionIncome>
        <UnrelatedBusinessRevenue>3930000</UnrelatedBusinessRevenue>
      </ProgramServiceRevenue>
      <TotalProgramServiceRevenue>1837834000</TotalProgramServiceRevenue>
      <InvestmentIncome>
        <TotalRevenueColumn>12029000</TotalRevenueColumn>
        <UnrelatedBusinessRevenue>-5643000</UnrelatedBusinessRevenue>
        <ExclusionAmount>17672000</ExclusionAmount>
      </InvestmentIncome>
      <IncomeFromInvestBondProceeds>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </IncomeFromInvestBondProceeds>
      <RoyaltiesRevenue>
        <TotalRevenueColumn>28990000</TotalRevenueColumn>
        <ExclusionAmount>28990000</ExclusionAmount>
      </RoyaltiesRevenue>
      <GrossRents>
        <Real>73000</Real>
      </GrossRents>
      <LessRentalExpenses>
        <Real>3000</Real>
      </LessRentalExpenses>
      <RentalIncomeOrLoss>
        <Real>70000</Real>
      </RentalIncomeOrLoss>
      <NetRentalIncomeOrLoss>
        <TotalRevenueColumn>70000</TotalRevenueColumn>
        <ExclusionAmount>70000</ExclusionAmount>
      </NetRentalIncomeOrLoss>
      <GrossAmountSalesAssets>
        <Securities>342526000</Securities>
        <Other>423000</Other>
      </GrossAmountSalesAssets>
      <LessCostOthBasisSalesExpenses>
        <Securities>240286000</Securities>
        <Other>295000</Other>
      </LessCostOthBasisSalesExpenses>
      <GainOrLoss>
        <Securities>102240000</Securities>
        <Other>128000</Other>
      </GainOrLoss>
      <NetGainOrLossInvestments>
        <TotalRevenueColumn>102368000</TotalRevenueColumn>
        <ExclusionAmount>102368000</ExclusionAmount>
      </NetGainOrLossInvestments>
      <NetIncomeFromFundraisingEvents>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetIncomeFromFundraisingEvents>
      <NetIncomeFromGaming>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetIncomeFromGaming>
      <GrossSalesOfInventory>16998000</GrossSalesOfInventory>
      <CostOfGoodsSold>8409000</CostOfGoodsSold>
      <NetIncomeOrLoss>
        <TotalRevenueColumn>8589000</TotalRevenueColumn>
        <ExclusionAmount>8589000</ExclusionAmount>
      </NetIncomeOrLoss>
      <OtherRevenueMisc>
        <Description>ADVERTISING AND FILMING</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>121000</TotalRevenueColumn>
        <UnrelatedBusinessRevenue>121000</UnrelatedBusinessRevenue>
      </OtherRevenueMisc>
      <TotalOtherRevenue>121000</TotalOtherRevenue>
      <TotalRevenue>
        <TotalRevenueColumn>2388101000</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>105002000</RelatedOrExemptFunctionIncome>
        <UnrelatedBusinessRevenue>-1592000</UnrelatedBusinessRevenue>
        <ExclusionAmount>1886591000</ExclusionAmount>
      </TotalRevenue>
      <GrantsToDomesticOrgs>
        <Total>6075000</Total>
        <ProgramServices>6075000</ProgramServices>
      </GrantsToDomesticOrgs>
      <GrantsToDomesticIndividuals>
        <Total>58453000</Total>
        <ProgramServices>58453000</ProgramServices>
      </GrantsToDomesticIndividuals>
      <ForeignGrants>
        <Total>0</Total>
      </ForeignGrants>
      <BenefitsToMembers>
        <Total>0</Total>
      </BenefitsToMembers>
      <CompCurrentOfficersDirectors>
        <Total>7591000</Total>
        <ProgramServices>3176000</ProgramServices>
        <ManagementAndGeneral>3917000</ManagementAndGeneral>
        <Fundraising>498000</Fundraising>
      </CompCurrentOfficersDirectors>
      <CompDisqualPersons>
        <Total>3988000</Total>
        <ProgramServices>3421000</ProgramServices>
        <ManagementAndGeneral>567000</ManagementAndGeneral>
      </CompDisqualPersons>
      <OtherSalariesAndWages>
        <Total>910942000</Total>
        <ProgramServices>877007000</ProgramServices>
        <ManagementAndGeneral>28408000</ManagementAndGeneral>
        <Fundraising>5527000</Fundraising>
      </OtherSalariesAndWages>
      <PensionPlanContributions>
        <Total>85682000</Total>
        <ProgramServices>82510000</ProgramServices>
        <ManagementAndGeneral>2655000</ManagementAndGeneral>
        <Fundraising>517000</Fundraising>
      </PensionPlanContributions>
      <OtherEmployeeBenefits>
        <Total>86192000</Total>
        <ProgramServices>75509000</ProgramServices>
        <ManagementAndGeneral>9177000</ManagementAndGeneral>
        <Fundraising>1506000</Fundraising>
      </OtherEmployeeBenefits>
      <PayrollTaxes>
        <Total>60339000</Total>
        <ProgramServices>58105000</ProgramServices>
        <ManagementAndGeneral>1870000</ManagementAndGeneral>
        <Fundraising>364000</Fundraising>
      </PayrollTaxes>
      <FeesForServicesManagement>
        <Total>0</Total>
      </FeesForServicesManagement>
      <FeesForServicesLegal>
        <Total>7755000</Total>
        <ProgramServices>4776000</ProgramServices>
        <ManagementAndGeneral>2979000</ManagementAndGeneral>
      </FeesForServicesLegal>
      <FeesForServicesAccounting>
        <Total>586000</Total>
        <ManagementAndGeneral>586000</ManagementAndGeneral>
      </FeesForServicesAccounting>
      <FeesForServicesLobbying>
        <Total>200000</Total>
        <ManagementAndGeneral>200000</ManagementAndGeneral>
      </FeesForServicesLobbying>
      <FeesForServicesProfFundraising>
        <Total>0</Total>
      </FeesForServicesProfFundraising>
      <FeesForServicesInvstMgmntFees>
        <Total>5469000</Total>
        <ManagementAndGeneral>5469000</ManagementAndGeneral>
      </FeesForServicesInvstMgmntFees>
      <FeesForServicesOther>
        <Total>9688000</Total>
        <ProgramServices>6338000</ProgramServices>
        <ManagementAndGeneral>3139000</ManagementAndGeneral>
        <Fundraising>211000</Fundraising>
      </FeesForServicesOther>
      <Advertising>
        <Total>184000</Total>
        <ProgramServices>93000</ProgramServices>
        <ManagementAndGeneral>87000</ManagementAndGeneral>
        <Fundraising>4000</Fundraising>
      </Advertising>
      <OfficeExpenses>
        <Total>307419000</Total>
        <ProgramServices>298574000</ProgramServices>
        <ManagementAndGeneral>8598000</ManagementAndGeneral>
        <Fundraising>247000</Fundraising>
      </OfficeExpenses>
      <InformationTechnology>
        <Total>5176000</Total>
        <ProgramServices>3033000</ProgramServices>
        <ManagementAndGeneral>2108000</ManagementAndGeneral>
        <Fundraising>35000</Fundraising>
      </InformationTechnology>
      <Royalties>
        <Total>163000</Total>
        <ProgramServices>145000</ProgramServices>
        <ManagementAndGeneral>18000</ManagementAndGeneral>
      </Royalties>
      <Occupancy>
        <Total>59097000</Total>
        <ProgramServices>57430000</ProgramServices>
        <ManagementAndGeneral>1658000</ManagementAndGeneral>
        <Fundraising>9000</Fundraising>
      </Occupancy>
      <Travel>
        <Total>44686000</Total>
        <ProgramServices>44009000</ProgramServices>
        <ManagementAndGeneral>510000</ManagementAndGeneral>
        <Fundraising>167000</Fundraising>
      </Travel>
      <TravelEntrtnmntPublicOfficials>
        <Total>0</Total>
      </TravelEntrtnmntPublicOfficials>
      <ConferencesMeetings>
        <Total>1326000</Total>
        <ProgramServices>978000</ProgramServices>
        <ManagementAndGeneral>332000</ManagementAndGeneral>
        <Fundraising>16000</Fundraising>
      </ConferencesMeetings>
      <Interest>
        <Total>8436000</Total>
        <ProgramServices>8198000</ProgramServices>
        <ManagementAndGeneral>237000</ManagementAndGeneral>
        <Fundraising>1000</Fundraising>
      </Interest>
      <PaymentsToAffiliates>
        <Total>0</Total>
      </PaymentsToAffiliates>
      <DepreciationDepletion>
        <Total>59454000</Total>
        <ProgramServices>57777000</ProgramServices>
        <ManagementAndGeneral>1668000</ManagementAndGeneral>
        <Fundraising>9000</Fundraising>
      </DepreciationDepletion>
      <Insurance>
        <Total>6934000</Total>
        <ProgramServices>254000</ProgramServices>
        <ManagementAndGeneral>6680000</ManagementAndGeneral>
      </Insurance>
      <OtherExpenses>
        <Description>CONTRACT SERVICES</Description>
        <Total>597402000</Total>
        <ProgramServices>597402000</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>EQUIPMENT TITLE TO US GOVT</Description>
        <Total>3109000</Total>
        <ProgramServices>3109000</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>JPL POST EMPLOYMENT OBLIGATION</Description>
        <Total>5692000</Total>
        <ProgramServices>5692000</ProgramServices>
      </OtherExpenses>
      <TotalFunctionalExpenses>
        <Total>2342038000</Total>
        <ProgramServices>2252064000</ProgramServices>
        <ManagementAndGeneral>80863000</ManagementAndGeneral>
        <Fundraising>9111000</Fundraising>
      </TotalFunctionalExpenses>
      <CashNonInterestBearing>
        <BOY>28190000</BOY>
        <EOY>42733000</EOY>
      </CashNonInterestBearing>
      <SavingsAndTempCashInvestments>
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        <EOY>321147000</EOY>
      </SavingsAndTempCashInvestments>
      <PledgesAndGrantsReceivable>
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        <EOY>131969000</EOY>
      </PledgesAndGrantsReceivable>
      <AccountsReceivable>
        <BOY>197705000</BOY>
        <EOY>208047000</EOY>
      </AccountsReceivable>
      <ReceivablesFromOfficersEtc>
        <BOY>350000</BOY>
        <EOY>350000</EOY>
      </ReceivablesFromOfficersEtc>
      <OtherNotesLoansReceivableNet>
        <BOY>903400</BOY>
        <EOY>1073859</EOY>
      </OtherNotesLoansReceivableNet>
      <PrepaidExpensesDeferredCharges>
        <BOY>505673000</BOY>
        <EOY>556644000</EOY>
      </PrepaidExpensesDeferredCharges>
      <LandBuildingsEquipmentBasis>1456606000</LandBuildingsEquipmentBasis>
      <LandBldgEquipmentAccumDeprec>609400000</LandBldgEquipmentAccumDeprec>
      <LandBuildingsEquipmentBasisNet>
        <BOY>838624000</BOY>
        <EOY>847206000</EOY>
      </LandBuildingsEquipmentBasisNet>
      <InvestmentsPubTradedSecurities>
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        <EOY>592368000</EOY>
      </InvestmentsPubTradedSecurities>
      <InvestmentsOtherSecurities>
        <BOY>748756000</BOY>
        <EOY>895075000</EOY>
      </InvestmentsOtherSecurities>
      <OtherAssetsTotal>
        <BOY>29890600</BOY>
        <EOY>28739141</EOY>
      </OtherAssetsTotal>
      <TotalAssets>
        <BOY>3511517000</BOY>
        <EOY>3625352000</EOY>
      </TotalAssets>
      <AccountsPayableAccruedExpenses>
        <BOY>881593000</BOY>
        <EOY>409800000</EOY>
      </AccountsPayableAccruedExpenses>
      <DeferredRevenue>
        <BOY>21116000</BOY>
        <EOY>20032000</EOY>
      </DeferredRevenue>
      <TaxExemptBondLiabilities>
        <BOY>375095000</BOY>
        <EOY>375307000</EOY>
      </TaxExemptBondLiabilities>
      <EscrowAccountLiability>
        <BOY>81093000</BOY>
        <EOY>72980000</EOY>
      </EscrowAccountLiability>
      <MortNotesPyblSecuredInvestProp>
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        <EOY>51830000</EOY>
      </MortNotesPyblSecuredInvestProp>
      <OtherLiabilities>
        <EOY>539632000</EOY>
      </OtherLiabilities>
      <TotalLiabilities>
        <BOY>1418997000</BOY>
        <EOY>1469581000</EOY>
      </TotalLiabilities>
      <FollowSFAS117>X</FollowSFAS117>
      <UnrestrictedNetAssets>
        <BOY>566186000</BOY>
        <EOY>692704000</EOY>
      </UnrestrictedNetAssets>
      <TemporarilyRestrictedNetAssets>
        <BOY>815190000</BOY>
        <EOY>700740000</EOY>
      </TemporarilyRestrictedNetAssets>
      <PermanentlyRestrictedNetAssets>
        <BOY>711144000</BOY>
        <EOY>762327000</EOY>
      </PermanentlyRestrictedNetAssets>
      <TotalNetAssetsFundBalances>
        <BOY>2092520000</BOY>
        <EOY>2155771000</EOY>
      </TotalNetAssetsFundBalances>
      <TotalLiabNetAssetsFundBalances>
        <BOY>3511517000</BOY>
        <EOY>3625352000</EOY>
      </TotalLiabNetAssetsFundBalances>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>false</AccountantCompileOrReview>
      <FSAudited>true</FSAudited>
      <AuditCommittee>true</AuditCommittee>
      <FinancialStatementSeparate>X</FinancialStatementSeparate>
      <FederalGrantAuditRequired>true</FederalGrantAuditRequired>
      <FederalGrantAuditPerformed>true</FederalGrantAuditPerformed>
    </IRS990>
    <IRS990ScheduleA documentId="IRS990ScheduleA">
      <School170b1Aii>X</School170b1Aii>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="IRS990ScheduleB">
      <ContributorInfo>
        <ContributorNumber>RESTRICTED</ContributorNumber>
        <ContributorNameBusiness>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorNameBusiness>
        <ContributorAddressUS>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorAddressUS>
        <AggregateContributions>RESTRICTED</AggregateContributions>
      </ContributorInfo>
    </IRS990ScheduleB>
    <IRS990ScheduleC documentId="IRS990ScheduleC">
      <TotalGrassrootsLobbying />
      <TotalDirectLobbying />
      <TotalLobbyingExpenditures />
      <OtherExemptPurposeExpenditures />
      <TotalExemptPurposeExpenditures />
      <LobbyingNontaxableAmount />
      <GrassrootsNontaxableAmount />
      <TotLobbyingGrassrootMinusNonTx />
      <TotLobbyExpendMnsLobbyingNontx />
      <Volunteers>false</Volunteers>
      <PaidStaffOrManagement>true</PaidStaffOrManagement>
      <MediaAdvertisements>false</MediaAdvertisements>
      <MailingsMembers>false</MailingsMembers>
      <PublicationsOrBroadcast>false</PublicationsOrBroadcast>
      <GrantsOtherOrganizations>true</GrantsOtherOrganizations>
      <GrantsOtherOrganizationsAmount>200000</GrantsOtherOrganizationsAmount>
      <DirectContactLegislators>true</DirectContactLegislators>
      <DirectContactLegislatorsAmount>2000</DirectContactLegislatorsAmount>
      <RalliesDemonstrations>false</RalliesDemonstrations>
      <OtherActivities>true</OtherActivities>
      <OtherActivitiesAmount>118000</OtherActivitiesAmount>
      <TotalLobbyingExpendituresIIB>320000</TotalLobbyingExpendituresIIB>
      <NotDescribedIn501c3>false</NotDescribedIn501c3>
      <Form990ScheduleCPartIV>
        <Identifier>lobbying activity explanation</Identifier>
        <ReturnReference>schedule C, part II-B</ReturnReference>
        <Explanation>THE INSTITUTE RETAINS A CONSULTING FIRM TO MONITOR LEGISLATIVE DEVELOPMENTS AND TO COUNSEL IT ON GOVERNMENT RELATIONS MATTERS. THE CONSULTANT MAY ESTABLISH DIRECT CONTACT WITH LEGISLATORS, THEIR STAFFS, GOVERNMENT OFFICIALS, AND LEGISLATIVE BODIES AND ENGAGE IN COMMUNICATION WHICH MAY BE CONSIDERED COMMuNICATION WHICH ATTEMPTS TO INFLUENCE LEGISLATION. FURTHER, THE INSTITUTE'S STAFF IN THE COURSE OF NECESSARY COMMUNICATIONS WITH GOVERNMENT OFFICIALS AND INFORMATIONAL PUBLIC EDUCATION ACTIVITIES, MAY FROM TIME TO TIME ENGAGE IN COMMUNICATION WHICH MAY BE CONSIDERED TO INFLUENCE LEGISLATION. TOTAL LOBBYING EXPENDITURES INCLUDE THE TOTAL OF ALL EXPENDITURES IN ALL ACCOUNTS THAT MAY POTENTIALLY HAVE ANY RELATIONSHIP TO LOBBYING. THIS AMOUNT INCLUDES THE ENTIRE EXPENDITURES OF THE INSTITUTE'S OFFICE OF GOVERNMENT RELATIONS AND COMMUNITY AFFAIRS, OF WHICH ONLY A FRACTION IS EXPENDED FOR LOBBYING ACTIVITIES. THE INSTITUTE IS A MEMBER OF CERTAIN PROFESSIONAL AND ACADEMIC ORGANIZATIONS THAT HAVE EMPLOYEES REGISTERED TO LOBBY ON BEHALF OF MEMBERSHIP. ALTHOUGH A SMALL PORTION OF THE INSTITUTE'S MEMBERSHIP DUES MAY BE USED FOR LOBBYING, THE AMOUNT IS IMMATERIAL. CALTECH'S MEMBERSHIP IN THESE ORGANIZATIONS IS FOR THE PURPOSE OF HAVING ACCESS TO THE MOST CURRENT INFORMATION ON GOVERNMENT AND BUSINESS DEVELOPMENTS AS THEY RELATE TO COLLEGES AND UNIVERSITIES AND NOT FOR ANY LOBBYING EFFORT.</Explanation>
      </Form990ScheduleCPartIV>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
      <ArtPublicExhibitionAmts />
      <HeldWorksOfArtAmts />
      <CollectUsedForScholarResearch>X</CollectUsedForScholarResearch>
      <CollectUsedForPreservation>X</CollectUsedForPreservation>
      <SolicitedAssetsForSale>false</SolicitedAssetsForSale>
      <AgentTrusteeEtc>false</AgentTrusteeEtc>
      <IncludedOnFS>true</IncludedOnFS>
      <CurrentYear>
        <BeginningOfYearBalance>1507019000</BeginningOfYearBalance>
        <Contributions>81279000</Contributions>
        <InvestmentEarningsOrLosses>151556000</InvestmentEarningsOrLosses>
        <GrantsOrScholarships>15015000</GrantsOrScholarships>
        <OtherExpenditures>73401000</OtherExpenditures>
        <AdministrativeExpenses>19479000</AdministrativeExpenses>
        <EndOfYearBalance>1631959000</EndOfYearBalance>
      </CurrentYear>
      <CurrentYearMinus1Year>
        <BeginningOfYearBalance>1659458000</BeginningOfYearBalance>
        <Contributions>75041000</Contributions>
        <InvestmentEarningsOrLosses>-125638000</InvestmentEarningsOrLosses>
        <GrantsOrScholarships>19010000</GrantsOrScholarships>
        <OtherExpenditures>82832000</OtherExpenditures>
        <EndOfYearBalance>1507019000</EndOfYearBalance>
      </CurrentYearMinus1Year>
      <BoardDesignatedEOYBalance>0.32500</BoardDesignatedEOYBalance>
      <PermanentEndowmentEOYBalance>0.66200</PermanentEndowmentEOYBalance>
      <TermEndowmentEOYBalance>0.01300</TermEndowmentEOYBalance>
      <EndowmentsHeldByUnrelatedOrgs>false</EndowmentsHeldByUnrelatedOrgs>
      <EndowmentsHeldByRelatedOrgs>false</EndowmentsHeldByRelatedOrgs>
      <Land>
        <OtherCostOrOtherBasis>34191000</OtherCostOrOtherBasis>
        <BookValue>34191000</BookValue>
      </Land>
      <Buildings>
        <OtherCostOrOtherBasis>844015000</OtherCostOrOtherBasis>
        <Depreciation>271208000</Depreciation>
        <BookValue>572807000</BookValue>
      </Buildings>
      <LeaseholdImprovements />
      <Equipment>
        <OtherCostOrOtherBasis>500475000</OtherCostOrOtherBasis>
        <Depreciation>338192000</Depreciation>
        <BookValue>162283000</BookValue>
      </Equipment>
      <OtherLandBuildings>
        <OtherCostOrOtherBasis>77925000</OtherCostOrOtherBasis>
        <BookValue>77925000</BookValue>
      </OtherLandBuildings>
      <TotalOfBookValueLandBuildings>847206000</TotalOfBookValueLandBuildings>
      <FinancialDerivatives />
      <CloselyHeldEquityInterests />
      <OtherSecurities>
        <Description>ABSOLUTE RETURN STRATEGIES</Description>
        <BookValue>513511000</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <OtherSecurities>
        <Description>PRIVATE EQUITY</Description>
        <BookValue>176491000</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <OtherSecurities>
        <Description>REAL ASSETS</Description>
        <BookValue>205073000</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <TotalOfBookValueSecurities>895075000</TotalOfBookValueSecurities>
      <FederalIncomeTaxLiability>0</FederalIncomeTaxLiability>
      <OtherLiabilities>
        <Description>ACCUMULATED POST RETIREMENT BENEFIT OBLIGATIONS</Description>
        <Amount>539632000</Amount>
      </OtherLiabilities>
      <TotalOfAmounts>539632000</TotalOfAmounts>
      <TotalRevenue>2388101000</TotalRevenue>
      <TotalExpenses>2342038000</TotalExpenses>
      <ExcessOrDeficitForYear>46063000</ExcessOrDeficitForYear>
      <NetUnrealizedGLOnInvestments>15712000</NetUnrealizedGLOnInvestments>
      <OtherAmount>1476000</OtherAmount>
      <TotalAdjustments>17188000</TotalAdjustments>
      <ExcessOrDeficitPerFS>63251000</ExcessOrDeficitPerFS>
      <TotRevenueEtcAuditedFinclStmt>2361085000</TotRevenueEtcAuditedFinclStmt>
      <NetUnrealizedGainsInvestments>15712000</NetUnrealizedGainsInvestments>
      <OtherRevenues>-42332000</OtherRevenues>
      <RevenueNotRptdF990>-26620000</RevenueNotRptdF990>
      <RevenueSubtotal>2387705000</RevenueSubtotal>
      <InvestmentExpensesNotIncluded>5469000</InvestmentExpensesNotIncluded>
      <OtherRevenuesNotIncluded>-5073000</OtherRevenuesNotIncluded>
      <RevenueNotRptdOnFinStmt>396000</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>2388101000</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>2299310000</TotExpensesEtcAuditedFinclStmt>
      <OtherExpensesIncluded>9200000</OtherExpensesIncluded>
      <ExpensesNotRptdF990>9200000</ExpensesNotRptdF990>
      <ExpensesSubtotal>2290110000</ExpensesSubtotal>
      <InvestmentExpensesNotIncluded2>5469000</InvestmentExpensesNotIncluded2>
      <OtherExpensesNotIncluded>46459000</OtherExpensesNotIncluded>
      <ExpensesNotRptdOnFinStmt>51928000</ExpensesNotRptdOnFinStmt>
      <TotalExpensesPerForm990>2342038000</TotalExpensesPerForm990>
      <Form990ScheduleDPartXIV>
        <Identifier>FORM 990, SCHEDULE D, PART III, LINE 1a</Identifier>
        <ReturnReference>The Institute does not capitalize its collection items. Due to the</ReturnReference>
        <Explanation>immateriality of the effect of collections practices on its financial statements, the Institute does not disclose its collections policies. FORM 990, SCHEDULE D, PART III, LINE 4 CALTECH MAINTAINS A COLLECTION OF INSTITUTIONAL RECORDS, DOCUMENTs, ARTIFACTS, and SPECIMENS FOR HISTORICAL PRESERVATION, INSTRUCTION, AND SCHOLARLY RESEARCH. FORM 990, SCHEDULE D, PART IV, LINE 2B The Institute holds donor annuities and trust agreements and manages investment funds for others, such as related organizations. The Institute does not own the funds associated with these programs. FORM 990, SCHEDULE D, PART V, LINE 4 The Institute's endowment functions to provide income to support the Institute's mission of scientific research and education. FORM 990, SCHEDULE D, PART XI, LINE 8 CHANGE IN POST EMPLOYMENT BENEFIT OBLIGATIONS $1,476,000 FORM 990, SCHEDULE D, PART XII, LINE 2D RECLASSify FINANCIAL AID NETTED WITH TUITION ($42,332,000) FORM 990, SCHEDULE D, PART XII, LINE 4B COST OF GOODS SOLD ($9,200,000) RECLASSification OF INTERNAL SALES $4,127,000 Total ($5,073,000) FORM 990, SCHEDULE D, PART XIII, LINE 2D COST OF GOODS SOLD $9,200,000 FORM 990, SCHEDULE D, PART XIII, LINE 4B RECLASSification of INTERNAL SALES $ 4,127,000 FINANCIAL AID EXPENSE $42,332,000 Total $46,459,000</Explanation>
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    </IRS990ScheduleD>
    <IRS990ScheduleE documentId="IRS990ScheduleE">
      <NondiscriminatoryPolicyStmt>true</NondiscriminatoryPolicyStmt>
      <PolicyStatementInBrochuresEtc>true</PolicyStatementInBrochuresEtc>
      <PolicyPublViaBroadcastMedia>true</PolicyPublViaBroadcastMedia>
      <PubViaBroadcastMediaExpln>THE INSTITUTE'S RACIALLY NONDISCRIMINATORY POLICY IS CONTAINED IN THE MINUTES OF THE EXECUTIVE COMMITTEE OF THE BOARD OF TRUSTEES OF FEBRUARY 1976. THE STATEMENT OF THIS POLICY OR REFERENCE THERETO APPEARS IN ALL of THE INSTITUTE'S CATALOGS, BROCHURES, AND OTHER WRITTEN COMMUNICATIONS WITH THE PUBLIC DEALING WITH STUDENT ADMISSIONS, PROGRAMS, AND SCHOLARSHIPS. THE INSTITUTE SATISFIED THE PUBLICATIONS REQUIREMENT BY VIRTUE OF ITS COMPLIANCE WITH SECTION 4.02 AS PROVIDED IN SECTION 4.03-2(B).</PubViaBroadcastMediaExpln>
      <MaintRacialCompositionRecords>true</MaintRacialCompositionRecords>
      <MaintScholarshipsRecords>true</MaintScholarshipsRecords>
      <MaintCopiesOfBrochuresEtc>true</MaintCopiesOfBrochuresEtc>
      <MaintCopiesOfAllSolicitations>true</MaintCopiesOfAllSolicitations>
      <DiscriminateRaceStudentsRights>false</DiscriminateRaceStudentsRights>
      <DiscriminateRaceAdmissPolicies>false</DiscriminateRaceAdmissPolicies>
      <DiscriminateRaceEmplmnFaculty>false</DiscriminateRaceEmplmnFaculty>
      <DiscriminateRaceScholarships>false</DiscriminateRaceScholarships>
      <DiscriminateRaceEducPolicies>false</DiscriminateRaceEducPolicies>
      <DiscriminateRaceUseOfFclts>false</DiscriminateRaceUseOfFclts>
      <DiscriminateRaceAthleticProg>false</DiscriminateRaceAthleticProg>
      <DiscriminateRaceOtherActy>false</DiscriminateRaceOtherActy>
      <GovernmentFinancialAidReceived>true</GovernmentFinancialAidReceived>
      <GovernmentFinancialAidRevoked>false</GovernmentFinancialAidRevoked>
      <GovtFinancialAidExplanation>THE INSTITUTE RECEIVES GRANTS AND ENTERS INTO CONTRACTS WITH VARIOUS AGENCIES OF THE U.S. GOVERNMENT, STATE OF CALIFORNIA AND LOCAL GOVERNMENT UNITS FOR RESEARCH, TRAINING, AND STUDENT AID.</GovtFinancialAidExplanation>
      <ComplianceWithRevProc7550>true</ComplianceWithRevProc7550>
    </IRS990ScheduleE>
    <IRS990ScheduleF documentId="IRS990ScheduleF">
      <GrantRecordsMaintained>true</GrantRecordsMaintained>
      <AcctsActvsOutUSTable>
        <Region>Central America and the Caribbean</Region>
        <TypeOfActivitiesConducted>Program Services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>scientific research</SpecificServicesProvided>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>North America</Region>
        <TypeOfActivitiesConducted>Program Services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>scientific research</SpecificServicesProvided>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Sub-Saharan Africa</Region>
        <TypeOfActivitiesConducted>Program Services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>scientific research</SpecificServicesProvided>
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      <AcctsActvsOutUSTable>
        <Region>Central America and the Caribbean</Region>
        <TypeOfActivitiesConducted>Investments</TypeOfActivitiesConducted>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Europe (Including Iceland and Greenland)</Region>
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        <NumberOfEmployees>11</NumberOfEmployees>
        <TypeOfActivitiesConducted>Program Services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>SCIENT. RESEARCH &amp; ED</SpecificServicesProvided>
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      <AcctsActvsOutUSTable>
        <Region>Europe (Including Iceland and Greenland)</Region>
        <TypeOfActivitiesConducted>Investments</TypeOfActivitiesConducted>
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      <AcctsActvsOutUSTable>
        <Region>Russia and the Newly Independent States</Region>
        <TypeOfActivitiesConducted>Program Services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>SCIENTIFIC RESEARCH</SpecificServicesProvided>
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        <NumberOfEmployees>1</NumberOfEmployees>
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      <AcctsActvsOutUSTable>
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      <AcctsActvsOutUSTable>
        <Region>Middle East and North Africa</Region>
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        <Explanation>provided to institute students who study in a foreign country. the institute offices that coordinate foreign study monitor the students' satisfactory academic progress. Form 990, schedule f, Part I, line 3(f) The Institute has reported activities in various regions based on a general understanding of its activities in those regions. Pursuant to an IRS FAQ document, the Institute's current accounting procedures do not track expenditures related to activities in other countries separately and therefore such expenditures have not been recorded in column (f).</Explanation>
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      <Form990ScheduleIPartIV>
        <Identifier>form 990, schedule i, part i, line 2</Identifier>
        <ReturnReference>The Institute's grants and assistance within the United States</ReturnReference>
        <Explanation>consists primarily of scholarships and fellowships awarded to students. Students are selected for scholarships and fellowships based on academic achievement, financial need, and similar standards. Various institute offices monitor eligibility and satisfactory academic progress by grantees. The Institute makes an annual $75,000 grant to the Caltech Y. The Caltech Y is a related organization whose mission is to support the students of Caltech through various activities. TMT Development corporation collaborates with the institute on the Thirty Meter Telescope project. Institute offices monitor the grantees' performance according to their respective program services goals and/or pursuant to other agreements. form 990, schedule i, Part III, column (C) Cash grants represent credit on accounts.</Explanation>
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        <NamePerson>Dale M Johnson</NamePerson>
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        <NamePerson>Firouz M Naderi</NamePerson>
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        <NamePerson>JOHN P GROTZINGER</NamePerson>
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        <NamePerson>ROBERT L O ROURKE</NamePerson>
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      <Form990ScheduleJPartIII>
        <Identifier>form 990, schedule j, part i, line 1a</Identifier>
        <ReturnReference>first class travel:</ReturnReference>
        <Explanation>Pursuant to a written policy, first class travel is permitted for certain senior officers for business purposes. Travel for business purposes is not included in taxable wages. Companion Travel: Pursuant to the individual's employment agreement and a written policy, spouses of certain senior officers are permitted to travel with the officer if a business purpose exists. Spousal travel for business purposes is not included in taxable wages. Tax Indemnification and Gross-up payments: Pursuant to a written policy, tax indemnification and gross-up payments are at the discretion of the President or his designee, and are considered on a case-by-case basis. During the year, the Institute made gross-up payments to persons listed in Part VII, Section A, line 1a on certain imputed compensation. Housing Allowance: Housing allowances are provided to certain officers, former officers, and highest compensated employees as part of the Institute's Salary Supplement Housing Program, which is governed by a written policy. Payments under this program are included in taxable wages. The President occupies an Institute-owned residence on its campus as a condition of employment for the convenience of the Institute. The President's nontaxable benefits in Schedule J-1, Part I, Column (D) include $27,256 as an estimate of the value of the personal space occupied in that residence. form 990, schedule j, part i, line 4a Schedule J-1, Part I, column B(iii) includes separation payments made in 2009 to Sharon E Borbon totaling $347,736. These payments meet the IRS definition of severance as per Schedule J instructions. Schedule J-1, Part I, column B(iii) includes compensation of $818,035 paid to Kip S. Thorne in 2009 and compensation of $557,709 paid to Gary A. Lorden in 2009 under the Institute's early retirement plan for faculty. form 990, schedule j, part i, line 7 Certain individuals listed in Part I of Schedule J-1 received bonuses in recognition of excellent job performance or as a negotiated payment at the beginning of an employment contract. Bonus recipients' names and amounts paid are shown in schedule J-1, part I, column (ii). form 990, schedule j, part i, line 8 &amp; 9 Scott H. Richland - Chief Investment Officer Mr. Richland's initial employment contract describes his initial compensation and benefits. Peter D. Hero - Vice President for Development and Institute Relations Mr. Hero's initial employment contract describes his initial compensation and benefits.</Explanation>
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    </IRS990ScheduleJ>
    <IRS990ScheduleK documentId="IRS990ScheduleK">
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        <IssuerName>
          <BusinessNameLine1>CEFA 2006 SERIES A &amp; B</BusinessNameLine1>
        </IssuerName>
        <IssuerEIN>521705592</IssuerEIN>
        <CUSIPNumber>130178EZ5</CUSIPNumber>
        <DateIssued>2006-06-12</DateIssued>
        <IssuePrice>165000000</IssuePrice>
        <DescriptionOfPurpose>CONSTRUCTION AND REFUNDING</DescriptionOfPurpose>
        <Defeased>false</Defeased>
        <OnBehalfOfIssuer>false</OnBehalfOfIssuer>
      </Form990ScheduleKPartI>
      <Form990ScheduleKPartI>
        <IssuerName>
          <BusinessNameLine1>CEFA 2009 SERIES</BusinessNameLine1>
        </IssuerName>
        <IssuerEIN>521705592</IssuerEIN>
        <CUSIPNumber>130178TE6</CUSIPNumber>
        <DateIssued>2009-07-28</DateIssued>
        <IssuePrice>80696800</IssuePrice>
        <DescriptionOfPurpose>CONSTRUCTION</DescriptionOfPurpose>
        <Defeased>false</Defeased>
        <OnBehalfOfIssuer>false</OnBehalfOfIssuer>
      </Form990ScheduleKPartI>
      <Form990ScheduleKPartII>
        <TotalProceeds>181314595</TotalProceeds>
        <AmountDefeased>79334107</AmountDefeased>
        <IssuanceCostsFromProceeds>1340000</IssuanceCostsFromProceeds>
        <CapitalExpenditures>93471835</CapitalExpenditures>
        <YearOfSubstCompletion>2010</YearOfSubstCompletion>
        <CurrentRefunding>false</CurrentRefunding>
        <AdvanceRefunding>true</AdvanceRefunding>
        <FinalAllocationMade>false</FinalAllocationMade>
        <AdequateBooksAndRecdsMaintaind>true</AdequateBooksAndRecdsMaintaind>
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        <TotalProceeds>80696800</TotalProceeds>
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        <CapitalExpenditures>56784720</CapitalExpenditures>
        <YearOfSubstCompletion>2010</YearOfSubstCompletion>
        <CurrentRefunding>false</CurrentRefunding>
        <AdvanceRefunding>false</AdvanceRefunding>
        <FinalAllocationMade>false</FinalAllocationMade>
        <AdequateBooksAndRecdsMaintaind>true</AdequateBooksAndRecdsMaintaind>
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        <AnyResearchAgreements>true</AnyResearchAgreements>
        <BondCounselRoutinelyEngaged>true</BondCounselRoutinelyEngaged>
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        <AnyResearchAgreements>false</AnyResearchAgreements>
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          <BusinessNameLine1>BANK NEW YORK MELLON</BusinessNameLine1>
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        <TermOfHedge>30.3</TermOfHedge>
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        <NameOfGICProvider>
          <BusinessNameLine1>CITIGROUP GLOBAL TRA</BusinessNameLine1>
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        <TermOfGIC>2.</TermOfGIC>
        <RegulatorySafeHarborSatisfied>true</RegulatorySafeHarborSatisfied>
        <GrossProceedsInvested>false</GrossProceedsInvested>
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    </IRS990ScheduleK>
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        <NamePerson>DEAN W CURRIE</NamePerson>
        <PurposeOfLoan>relocation loan</PurposeOfLoan>
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        <OriginalPrincipalAmount>350000</OriginalPrincipalAmount>
        <BalanceDue>350000</BalanceDue>
        <Default>false</Default>
        <ApprovedByBoard>true</ApprovedByBoard>
        <WrittenAgreement>true</WrittenAgreement>
      </LoanTable>
      <TotalBalanceDue>350000</TotalBalanceDue>
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        <NameOfInterestedPerson>
          <NamePerson>JEAN-LOU A CHAMEAU</NamePerson>
        </NameOfInterestedPerson>
        <Relationship>PRESIDENT</Relationship>
        <AmountOfTransaction>116167</AmountOfTransaction>
        <DescriptionOfTransaction>FAMILY MEMBER EMPLOYED BY CIT</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NamePerson>DALE M JOHNSON</NamePerson>
        </NameOfInterestedPerson>
        <Relationship>ASSOC. DIR, CFO, DBO, JPL</Relationship>
        <AmountOfTransaction>137602</AmountOfTransaction>
        <DescriptionOfTransaction>FAMILY MEMBER EMPLOYED BY CIT</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NamePerson>ANNEILA I SARGENT</NamePerson>
        </NameOfInterestedPerson>
        <Relationship>VP FOR STUDENT AFFAIRS</Relationship>
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      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NamePerson>STEVEN ONDERDONK</NamePerson>
        </NameOfInterestedPerson>
        <Relationship>TRUSTEE</Relationship>
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        <DescriptionOfTransaction>FAMILY MEMBER EMPLOYED BY CIT</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NamePerson>MARY L WEBSTER</NamePerson>
        </NameOfInterestedPerson>
        <Relationship>SECRETARY</Relationship>
        <AmountOfTransaction>58497</AmountOfTransaction>
        <DescriptionOfTransaction>FAMILY MEMBER EMPLOYED BY CIT</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NamePerson>VICTORIA D STRATMAN</NamePerson>
        </NameOfInterestedPerson>
        <Relationship>GENERAL COUNSEL</Relationship>
        <AmountOfTransaction>56841</AmountOfTransaction>
        <DescriptionOfTransaction>FAMILY MEMBER EMPLOYED BY CIT</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NamePerson>EDWARD M STOLPER</NamePerson>
        </NameOfInterestedPerson>
        <Relationship>PROVOST</Relationship>
        <AmountOfTransaction>160841</AmountOfTransaction>
        <DescriptionOfTransaction>FAMILY MEMBERS EMPLOYED BY CIT</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="IRS990ScheduleM">
      <WorksOfArt />
      <ArtHistoricalTreasures />
      <ArtFractionalInterest />
      <BooksAndPublications />
      <ClothingAndHouseholdGoods />
      <CarsAndOtherVehicles />
      <BoatsAndPlanes />
      <IntellectualProperty />
      <SecuritiesPubliclyTraded>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>46</NumberOfContributions>
        <NoncashContribsRptdF990>4864000</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>hi-lo avg</MethodOfDeterminingRevenues>
      </SecuritiesPubliclyTraded>
      <SecuritiesCloselyHeldStock />
      <SecuritiesPrtnrshpTrustIntrsts />
      <SecuritiesMiscellaneous />
      <QualifiedContribHistStruct />
      <QualifiedContribOther />
      <RealEstateResidential />
      <RealEstateCommercial />
      <RealEstateOther>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>2</NumberOfContributions>
        <NoncashContribsRptdF990>605000</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>appraisal</MethodOfDeterminingRevenues>
      </RealEstateOther>
      <Collectibles />
      <FoodInventory />
      <DrugsAndMedicalSupplies />
      <Taxidermy />
      <HistoricalArtifacts />
      <ScientificSpecimens>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>1</NumberOfContributions>
        <NoncashContribsRptdF990>1</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>value as a placemark</MethodOfDeterminingRevenues>
      </ScientificSpecimens>
      <ArchaeologicalArtifacts />
      <OtherNonCashContributionsTable>
        <NonCashCheckbox>X</NonCashCheckbox>
        <Description>portable composter</Description>
        <NumberOfContributions>1</NumberOfContributions>
        <NoncashContribsRptdF990>1</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>value of composter</MethodOfDeterminingRevenues>
      </OtherNonCashContributionsTable>
      <OtherNonCashContributionsTable>
        <NonCashCheckbox>X</NonCashCheckbox>
        <Description>cooking oven &amp; accessories</Description>
        <NumberOfContributions>1</NumberOfContributions>
        <NoncashContribsRptdF990>725</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>retail value</MethodOfDeterminingRevenues>
      </OtherNonCashContributionsTable>
      <NumberOf8283Received>2</NumberOf8283Received>
      <AnyPropertyThatMustBeHeld>false</AnyPropertyThatMustBeHeld>
      <ReviewProcessUnusualNCGifts>true</ReviewProcessUnusualNCGifts>
      <ThirdPartiesUsed>true</ThirdPartiesUsed>
      <Form990ScheduleMPartII>
        <Identifier>FORM 990, SCHEDULE M, part i, column(B)</Identifier>
        <ReturnReference>amounts on this column reflect number of contributors.</ReturnReference>
        <Explanation>FORM 990, SCHEDULE M, LINE 25 PORTABLE COMPOSTER DONATED FOR USE BY CAMPUS FACILITIES. FORM 990, SCHEDULE M, LINE 25 COOKING OVEN AND ACCESSORIES DONATED FOR STUDENT AFFAIRS EVENTS. FORM 990, SCHEDULE M, LINE 32B EXCEPT FOR BROKER AND CUSTODIAL SERVICES TO RECEIVE AND SELL GIFTS OF SECURITIES, THE INSTITUTE DOES NOT USE THIRD PARTIES OR RELATED ORGANIZATIONS TO SOLICIT, PROCESS, OR SELL NONCASH CONTRIBUTIONS.</Explanation>
      </Form990ScheduleMPartII>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <GeneralExplanation>
        <Identifier>FORM 990, PARTS I AND III, LINE 1</Identifier>
        <ReturnReference>The mission of the California Institute of Technology is to expand human</ReturnReference>
        <Explanation>knowledge and benefit society through research integrated with education. We investigate the most challenging, fundamental problems in science and technology in a singularly collegial, interdisciplinary atmosphere, while educating outstanding students to become creative members of society. FORM 990, PART I, LINE 6 THE INSTITUTE DOES NOT FORMALLY TRACK VOLUNTEERS. THE NUMBER IDENTIFIED IS BASED ON A REASONABLE ESTIMATE. form 990, part iii, line 4d AUXILIARY ENTERPRISES (EXPENSES $22,610,000) (REVENUE $18,926,000) AUXILIARY ENTERPRISES IN SUPPORT OF INSTITUTE'S MISSION CALTECH Y ALLOCATION (GRANTS $75,000) CASH ALLOCATION TO RELATED ORGANIZATION SUPPORTING INSTITUTE'S MISSION FORM 990, PART IV, LINE 6 THE INSTITUTE HAS NO SEPARATE FUNDS OR ACCOUNTS WHERE DONORS HAVE THE RIGHT EITHER TO PROVIDE ADVICE ON THE INVESTMENT OF AMOUNTS IN THE FUNDS OR TO PROVIDE ADVICE ON DISTRIBUTION OF SUCH FUNDS OUTSIDE THE INSTITUTE. FORM 990, Part VI, Line 2 TRUSTEES THOMAS EVERHART AND PETER NORTON - BUSINESS RELATIONSHIP CHIEF INVESTMENT OFFICER SCOTT H. RICHLAND AND TRUSTEE JAY S. WINTROB - BUSINESS RELATIONSHIP FORM 990, PART VI, LINE 11a The Institute prepares Form 990 with the assistance of a paid preparer. A draft of the Form 990 is presented to the Audit and Compliance Committee for review and comment. A final copy of Form 990 is provided to each member of the Board of Trustees prior to filing with the IRS. An officer of the institute and its paid preparer, respectively sign the final form 990. FORM 990, PART VI, LINE 12c Each trustee and officer is required to complete annually a conflict of interest questionnaire disclosing potential or actual conflicts. Key employees are required to disclose in writing potential and actual conflicts on an ongoing basis throughout the year. All conflicts are resolved in accordance with the Institute's written conflict of interest policies. FORM 990, PART VI, LINE 15a, 15b The Executive Compensation Committee of the Board of Trustees reviews on an annual basis the compensation of officers and key employees of the Institute. The Executive Compensation Committee reviews comparability data from relevant surveys. The deliberations are contemporaneously documented in the committee's minutes. FORM 990, PART VI, LINE 19 The Institute's governing documents, financial statements and conflict of interest policy are available upon request. FORM 990, PART VII THE INSTITUTE HAS ESTIMATED THAT TRUSTEES DEVOTE, ON AVERAGE, AT LEAST ONE HOUR OF TIME PER WEEK. CERTAIN BOARD MEMBERS' TIME DEVOTED TO INSTITUTE BUSINESS MAY SUBSTANTIALLY EXCEED THIS ESTIMATE ON A REGULAR BASIS. SCHEDULE E, LINE 6A THE INSTITUTE RECEIVES GRANTS AND ENTERS INTO CONTRACTS WITH VARIOUS AGENCIES OF THE U.S. GOVERNMENT, THE STATE OF CALIFORNIA, AND LOCAL GOVERNMENT UNITS FOR RESEARCH, TRAINING, AND STUDENT AID.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <Form990ScheduleRPartI>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>CIT MICROPROBE HOLDINGS LLC</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>1200 E CALIFORNIA BLVD</AddressLine1>
          <City>PASADENA</City>
          <State>CA</State>
          <ZIPCode>91125</ZIPCode>
        </AddressUS>
        <EIN>205217981</EIN>
        <PrimaryActivities>HOLDING CO.</PrimaryActivities>
        <LegalDomicileState>NV</LegalDomicileState>
        <TotalIncome>-304000</TotalIncome>
        <EOYAssets>1692000</EOYAssets>
        <DirectControllingEntityName>
          <BusinessNameLine1>NA</BusinessNameLine1>
        </DirectControllingEntityName>
      </Form990ScheduleRPartI>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>CALTECH Y</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>1201 E CALIFORNIA BLVD</AddressLine1>
          <City>PASADENA</City>
          <State>CA</State>
          <ZIPCode>91125</ZIPCode>
        </AddressUS>
        <EIN>951684790</EIN>
        <PrimaryActivities>recreation</PrimaryActivities>
        <LegalDomicileState>CA</LegalDomicileState>
        <ExemptCodeSection>501(C)(3)</ExemptCodeSection>
        <PublicCharityStatus>11,3,fi</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>NA</BusinessNameLine1>
        </DirectControllingEntityName>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>ALUMNI ASSOCIATION OF CALTECH</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>345 S HILL AVE</AddressLine1>
          <City>PASADENA</City>
          <State>CA</State>
          <ZIPCode>91125</ZIPCode>
        </AddressUS>
        <EIN>956047395</EIN>
        <PrimaryActivities>alumni</PrimaryActivities>
        <LegalDomicileState>CA</LegalDomicileState>
        <ExemptCodeSection>501(C)(3)</ExemptCodeSection>
        <PublicCharityStatus>11,type 1</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>NA</BusinessNameLine1>
        </DirectControllingEntityName>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>TOM AND VALLEY KNUDSEN FDN</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>C/O CALTECH GIFT PLANNING</AddressLine1>
          <City>PASADENA</City>
          <State>CA</State>
          <ZIPCode>91125</ZIPCode>
        </AddressUS>
        <EIN>956031188</EIN>
        <PrimaryActivities>support org</PrimaryActivities>
        <LegalDomicileState>CA</LegalDomicileState>
        <ExemptCodeSection>501(C)(3)</ExemptCodeSection>
        <PublicCharityStatus>11,type 1</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>NA</BusinessNameLine1>
        </DirectControllingEntityName>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>CAHILL CALTECH CHARITABLE TRUST</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>16830 VENTURA BLVD STE 500</AddressLine1>
          <City>ENCINO</City>
          <State>CA</State>
          <ZIPCode>91436</ZIPCode>
        </AddressUS>
        <EIN>576198664</EIN>
        <PrimaryActivities>SUPPORT ORG</PrimaryActivities>
        <LegalDomicileState>CA</LegalDomicileState>
        <ExemptCodeSection>501(c)(3)</ExemptCodeSection>
        <PublicCharityStatus>11,3,other</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>NA</BusinessNameLine1>
        </DirectControllingEntityName>
      </Form990ScheduleRPartII>
      <ReceiptOfIntAnnRentsRoyalties>false</ReceiptOfIntAnnRentsRoyalties>
      <GiftGrantOrCapContrToOtherOrg>true</GiftGrantOrCapContrToOtherOrg>
      <GiftGrantOrCapContrFrOtherOrg>true</GiftGrantOrCapContrFrOtherOrg>
      <LoansOrGuaranteesToOtherOrg>false</LoansOrGuaranteesToOtherOrg>
      <LoansOrGuaranteesFromOtherOrg>false</LoansOrGuaranteesFromOtherOrg>
      <SaleOfAssetsToOtherOrg>false</SaleOfAssetsToOtherOrg>
      <PurchaseOfAssetsFromOtherOrg>false</PurchaseOfAssetsFromOtherOrg>
      <ExchangeOfAssets>false</ExchangeOfAssets>
      <RentalOfFacilitiesToOtherOrgs>true</RentalOfFacilitiesToOtherOrgs>
      <RentalOfFacilitiesFrOtherOrgs>false</RentalOfFacilitiesFrOtherOrgs>
      <PerformOfServicesForOtherOrgs>false</PerformOfServicesForOtherOrgs>
      <PerformOfServicesByOtherOrgs>false</PerformOfServicesByOtherOrgs>
      <SharingOfFacilities>true</SharingOfFacilities>
      <SharingOfPaidEmployees>true</SharingOfPaidEmployees>
      <ReimbursementPaidToOtherOrg>false</ReimbursementPaidToOtherOrg>
      <ReimbursementPaidByOtherOrg>false</ReimbursementPaidByOtherOrg>
      <OtherTransferToOtherOrg>false</OtherTransferToOtherOrg>
      <OtherTransferFromOtherOrg>false</OtherTransferFromOtherOrg>
    </IRS990ScheduleR>
  </ReturnData>
</Return>