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      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>2136353</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>197668</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>13</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>COOLEY LLP</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>101 CALIFORNIA STREET 5TH FLOOR</AddressLine1Txt>
            <CityNm>SAN FRANCISCO</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94111</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>LEGAL CONSULTING</ServicesDesc>
        <CompensationAmt>270620</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>FLG PARTNERS LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>228 HAMILTON AVENUE 3RD FLOOR</AddressLine1Txt>
            <CityNm>PALO ALTO</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94301</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>FINANCE CONSULTING</ServicesDesc>
        <CompensationAmt>256213</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>APERCEN PARTNERS LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>314 LYTTON AVENUE 200</AddressLine1Txt>
            <CityNm>PALO ALTO</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94301</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>FINANCE CONSULTING</ServicesDesc>
        <CompensationAmt>223290</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>WIDE CENTER ADVISORS LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 20713</AddressLine1Txt>
            <CityNm>OAKLAND</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94620</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>OPERATIONS CONSULTANT</ServicesDesc>
        <CompensationAmt>195050</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>ARNOLD &amp; PORTER KAYE SCHOLER LLP</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>601 MASSACHUSETTS AVENUE NW</AddressLine1Txt>
            <CityNm>WASHINGTON</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20001</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>LEGAL CONSULTING</ServicesDesc>
        <CompensationAmt>131339</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>7</CntrctRcvdGreaterThan100KCnt>
      <AllOtherContributionsAmt>8700089</AllOtherContributionsAmt>
      <NoncashContributionsAmt>656650</NoncashContributionsAmt>
      <TotalContributionsAmt>8700089</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>COLLABORATION PROGRAM</Desc>
        <BusinessCd>541700</BusinessCd>
        <TotalRevenueColumnAmt>403498</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>403498</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>403498</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>390317</TotalRevenueColumnAmt>
        <ExclusionAmt>390317</ExclusionAmt>
      </InvestmentIncomeGrp>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>9493904</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>403498</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>390317</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>15100000</TotalAmt>
        <ProgramServicesAmt>15100000</ProgramServicesAmt>
      </GrantsToDomesticOrgsGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>1109257</TotalAmt>
        <ManagementAndGeneralAmt>1109257</ManagementAndGeneralAmt>
      </CompCurrentOfcrDirectorsGrp>
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        <TotalAmt>3169840</TotalAmt>
        <ProgramServicesAmt>2952859</ProgramServicesAmt>
        <ManagementAndGeneralAmt>216981</ManagementAndGeneralAmt>
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      <PensionPlanContributionsGrp>
        <TotalAmt>150555</TotalAmt>
        <ProgramServicesAmt>63173</ProgramServicesAmt>
        <ManagementAndGeneralAmt>87382</ManagementAndGeneralAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>343590</TotalAmt>
        <ProgramServicesAmt>118734</ProgramServicesAmt>
        <ManagementAndGeneralAmt>224856</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>302826</TotalAmt>
        <ProgramServicesAmt>240223</ProgramServicesAmt>
        <ManagementAndGeneralAmt>62603</ManagementAndGeneralAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>422738</TotalAmt>
        <ProgramServicesAmt>11060</ProgramServicesAmt>
        <ManagementAndGeneralAmt>411678</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>807210</TotalAmt>
        <ManagementAndGeneralAmt>807210</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>1525462</TotalAmt>
        <ProgramServicesAmt>425295</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1100167</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>336981</TotalAmt>
        <ManagementAndGeneralAmt>336981</ManagementAndGeneralAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>3010141</TotalAmt>
        <ProgramServicesAmt>2902769</ProgramServicesAmt>
        <ManagementAndGeneralAmt>107372</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>551725</TotalAmt>
        <ProgramServicesAmt>445292</ProgramServicesAmt>
        <ManagementAndGeneralAmt>106433</ManagementAndGeneralAmt>
      </InformationTechnologyGrp>
      <OccupancyGrp>
        <TotalAmt>2985249</TotalAmt>
        <ProgramServicesAmt>2637591</ProgramServicesAmt>
        <ManagementAndGeneralAmt>347658</ManagementAndGeneralAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>113026</TotalAmt>
        <ProgramServicesAmt>56400</ProgramServicesAmt>
        <ManagementAndGeneralAmt>56626</ManagementAndGeneralAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>30777</TotalAmt>
        <ProgramServicesAmt>30077</ProgramServicesAmt>
        <ManagementAndGeneralAmt>700</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>872411</TotalAmt>
        <ProgramServicesAmt>856918</ProgramServicesAmt>
        <ManagementAndGeneralAmt>15493</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>38298</TotalAmt>
        <ProgramServicesAmt>31749</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6549</ManagementAndGeneralAmt>
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      <OtherExpensesGrp>
        <Desc>LAB SUPPLIES</Desc>
        <TotalAmt>2843979</TotalAmt>
        <ProgramServicesAmt>2843760</ProgramServicesAmt>
        <ManagementAndGeneralAmt>219</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>MEALS AND ENTERTAINMENT</Desc>
        <TotalAmt>120975</TotalAmt>
        <ProgramServicesAmt>54153</ProgramServicesAmt>
        <ManagementAndGeneralAmt>66822</ManagementAndGeneralAmt>
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      <TotalFunctionalExpensesGrp>
        <TotalAmt>33835040</TotalAmt>
        <ProgramServicesAmt>28770053</ProgramServicesAmt>
        <ManagementAndGeneralAmt>5064987</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
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      <CashNonInterestBearingGrp>
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        <EOYAmt>4601804</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>57087550</BOYAmt>
        <EOYAmt>83377771</EOYAmt>
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      <PledgesAndGrantsReceivableGrp>
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        <EOYAmt>464127355</EOYAmt>
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      <AccountsReceivableGrp>
        <EOYAmt>175973</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
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      <LandBldgEquipCostOrOtherBssAmt>8012883</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>872410</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>977343</BOYAmt>
        <EOYAmt>7140473</EOYAmt>
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      <OtherAssetsTotalGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>2952083</EOYAmt>
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      <TotalAssetsGrp>
        <BOYAmt>581780417</BOYAmt>
        <EOYAmt>562469286</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>1080620</BOYAmt>
        <EOYAmt>2582738</EOYAmt>
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      <OtherLiabilitiesGrp>
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        <EOYAmt>7167887</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>4720620</BOYAmt>
        <EOYAmt>9750625</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
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        <EOYAmt>85639223</EOYAmt>
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      <TemporarilyRstrNetAssetsGrp>
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        <EOYAmt>467079438</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
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        <EOYAmt>552718661</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
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        <EOYAmt>562469286</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-24341136</ReconcilationRevenueExpnssAmt>
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      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
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    <IRS990ScheduleA documentId="RetDoc1039100001">
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      <HospitalNameAndAddressGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>AFFILIATED HOSPITALS OF STANFORD</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <CityNm>STANFORD</CityNm>
        <StateAbbreviationCd>CA</StateAbbreviationCd>
      </HospitalNameAndAddressGrp>
      <HospitalNameAndAddressGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>AFFILIATED HOSPITALS OF UCSF</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <CityNm>SAN FRANCISCO</CityNm>
        <StateAbbreviationCd>CA</StateAbbreviationCd>
      </HospitalNameAndAddressGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BIOHUB IS IN THE PROCESS OF LAUNCHING ITS RESEARCH ACTIVITIES. IT IS A NEWLY-CREATED ORGANIZATION AND BELIEVES IT WILL BE CONSIDERED TO BE CONTINUOUSLY ENGAGED IN THE ACTIVE CONDUCT OF MEDICAL RESEARCH IN CONJUNCTION WITH A HOSPITAL AND IT REASONABLY EXPECTS TO SATISFY THE ASSET TEST OR ENDOWMENT TEST BY THE END OF ITS ORGANIZATIONAL PERIOD OF UP TO THREE YEARS.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001" />
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        <DepreciationAmt>13613</DepreciationAmt>
        <BookValueAmt>192054</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
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        <DepreciationAmt>858797</DepreciationAmt>
        <BookValueAmt>6948419</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>7140473</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
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        <Amt>7167887</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>7167887</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
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      <RevenueNotReportedAmt>0</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>9493904</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>9493904</TotalRevenuePerForm990Amt>
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      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>33835040</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>33835040</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BIOHUB IS EXEMPT FROM INCOME TAXES UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE AS A MEDICAL RESEARCH ORGANIZATION OPERATED IN CONJUNCTION WITH A HOSPITAL AND SECTION 23701D OF THE CALIFORNIA REVENUE AND TAXATION CODE. THE BIOHUB HAS NO UNRECOGNIZED TAX BENEFITS OR LIABILITIES AS OF DECEMBER 31, 2017.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>STANFORD</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3145 PORTER DRIVE</AddressLine1Txt>
          <CityNm>PALO ALTO</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94304</ZIPCd>
        </USAddress>
        <RecipientEIN>941156365</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>6650000</CashGrantAmt>
        <PurposeOfGrantTxt>SCIENTIFIC AND MEDICAL RESEARCH</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UCSF</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>UCSF PO BOX 0248</AddressLine1Txt>
          <CityNm>SAN FRANCISCO</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94143</ZIPCd>
        </USAddress>
        <RecipientEIN>946036493</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>5600000</CashGrantAmt>
        <PurposeOfGrantTxt>SCIENTIFIC AND MEDICAL RESEARCH</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UC BERKELEY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2195 HEARST AVE RM 120 MC 1104</AddressLine1Txt>
          <CityNm>BERKELEY</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94720</ZIPCd>
        </USAddress>
        <RecipientEIN>946002123</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>2850000</CashGrantAmt>
        <PurposeOfGrantTxt>SCIENTIFIC AND MEDICAL RESEARCH</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>3</Total501c3OrgCnt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BIOHUB WILL OBLIGATE THE USE OF THE GIFT FUNDS ONLY FOR THE PURPOSE FOR WHICH THE BIOHUB MAKES THE AWARD. THE BIOHUB WILL REQUIRE PERIODIC WRITTEN REPORTS CONCERNING THE USE OF THE GIFT AS APPROPRIATE AND RETAIN FOR THE BIOHUB THE RIGHT TO WITHHOLD OR RECOVER FUND IN CASES OF MISUSE AS APPROPRIATE. FROM TIME TO TIME, THE BIOHUB WILL MAKE DISCRETIONARY GIFTS TO 501(C)(3) ORGANIZATIONS WITHOUT THE NEED FOR A WRITTEN PROPOSAL.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
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      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
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      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>1</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
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        <PersonNm>DR JOSEPH DERISI</PersonNm>
        <TitleTxt>CO-CHIEF EXECUTIVE</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>6552</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>27000</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>399492</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DR STEPHEN QUAKE</PersonNm>
        <TitleTxt>CO-CHIEF EXECUTIVE</TitleTxt>
        <BaseCompensationFilingOrgAmt>365940</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>6552</DeferredCompensationFlngOrgAmt>
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        <NontaxableBenefitsFilingOrgAmt>27000</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>399492</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>GAJUS WORTHINGTON</PersonNm>
        <TitleTxt>CHIEF OPERATING OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>211521</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>85760</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>6811</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>6181</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>310273</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JIM KARKANIAS</PersonNm>
        <TitleTxt>VP DATA SCIENCES &amp; IT INFRASTRUCTURE</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>59760</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>6858</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>28082</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>311013</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ANDREW MAY</PersonNm>
        <TitleTxt>SENIOR DIRECTOR, GENOME ENGINEERING</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>56920</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>9000</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>8658</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>285083</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>RAFAEL GOMEZ-SJOBERG</PersonNm>
        <TitleTxt>DIRECTOR, BIOENGINEERING</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>34760</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>5109</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>18211</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>225555</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>AMY KISTLER</PersonNm>
        <TitleTxt>GROUP LEADER (SENIOR SCIENTIST)</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>22380</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>7994</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>192433</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>NORMA NEFF</PersonNm>
        <TitleTxt>SENIOR FELLOW</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>36690</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
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        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>5893</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>210680</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>INCENTIVE COMPENSATION WAS PROVIDED TO CERTAIN PERSONS LISTED ON PART VII OF THE FORM 990. INCENTIVE COMPENSATION WAS PAID BASED ON A FIXED PERCENTAGE OF BASE COMPENSATION, PLUS AN ADDITIONAL DISCRETIONARY PERCENTAGE SUBJECT TO BOARD APPROVAL.</ExplanationTxt>
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    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <GrntAsstBnftInterestedPrsnGrp>
        <PersonNm>DR STEPHEN QUAKE</PersonNm>
        <RelationshipWithOrgTxt>CO-CHIEF EXECUTIVE &amp; BOARD MEMBER OF ORGANIZATION</RelationshipWithOrgTxt>
        <CashGrantAmt>2000000</CashGrantAmt>
        <TypeOfAssistanceTxt>AWARD TO CONDUCT RESEARCH</TypeOfAssistanceTxt>
        <AssistancePurposeTxt>AWARD PROVIDED TO STANFORD UNIVERSITY TO SUPPORT RESEARCH LAB OF DR. QUAKE</AssistancePurposeTxt>
      </GrntAsstBnftInterestedPrsnGrp>
      <GrntAsstBnftInterestedPrsnGrp>
        <PersonNm>DR JOSEPH DERISI</PersonNm>
        <RelationshipWithOrgTxt>CO-CHIEF EXECUTIVE &amp; BOARD MEMBER OF ORGANIZATION</RelationshipWithOrgTxt>
        <CashGrantAmt>2000000</CashGrantAmt>
        <TypeOfAssistanceTxt>AWARD TO CONDUCT RESEARCH</TypeOfAssistanceTxt>
        <AssistancePurposeTxt>AWARD PROVIDED TO UCSF TO SUPPORT RESEARCH LAB OF DR. DERISI</AssistancePurposeTxt>
      </GrntAsstBnftInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>CHAN ZUCKERBERG INITIATIVE</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>ENTITY OWNED BY MARK ZUCKERBERG, DIRECTOR</RelationshipDescriptionTxt>
        <TransactionAmt>201029</TransactionAmt>
        <TransactionDesc>INVITEE FEES PAID FROM CZI TO BIOHUB</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>APERCEN PARTNERS LLC</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>ENTITY MORE THAN 35% OWNED BY TOM VAN LOBEN SELS, SECRETARY</RelationshipDescriptionTxt>
        <TransactionAmt>223290</TransactionAmt>
        <TransactionDesc>FINANCE CONSULTING</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="RetDoc1042900001">
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        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>EQUIPMENT</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>288513</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>LEASEHOLD IMPROVEMENTS</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>193968</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>FURNITURE &amp; EQUIPMENT</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>174169</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <Form8283ReceivedCnt>0</Form8283ReceivedCnt>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>0</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, COLUMN (B):</FormAndLineReferenceDesc>
        <ExplanationTxt>COLUMN (B) REPRESENTS THE NUMBER OF CONTRIBUTIONS.</ExplanationTxt>
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    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>DR. CHAN (DIRECTOR) AND MR. ZUCKERBERG (DIRECTOR) HAVE A FAMILY RELATIONSHIP. APERCEN PARTNERS LLC, IN WHICH TOM VAN LOBEN SELS (SECRETARY) HAS MORE THAN A 35% OWNERSHIP INTEREST, HAS A BUSINESS RELATIONSHIP WITH DR. CHAN, MR. ZUCKERBERG, AND REID HOFFMAN. CORI BARGMANN AND MR. ZUCKERBERG HAVE A BUSINESS RELATIONSHIP.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>TWO UNRELATED PARTIES, WIDE CENTER ADVISORS, LLC AND FLG PARTNERS, LLC, PROVIDE OPERATIONAL CONSULTING SERVICES TO THE BIOHUB, INCLUDING, BUT NOT LIMITED TO, SUPPORT OF THE ORGANIZATION'S FINANCIAL, BUDGETING, STAFFING, FACILITIES, AND PROFESSIONAL SERVICES CAPACITIES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHAN ZUCKERBERG INITIATIVE, LLC DESIGNATES TWO BOARD OF DIRECTORS (DESIGNATED DIRECTORS). SUCH DESIGNATED DIRECTORS APPROVE THE APPOINTING, ELECTING, OR REMOVING OF ANY DIRECTOR OF THE ORGANIZATION INCLUDING THE FILLING OF ANY VACANCY OF THE BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNANCE DECISIONS ARE SUBJECT TO APPROVAL BY THE TWO DESIGNATED DIRECTORS INCLUDING: -CHANGING THE NATURE OR SCOPE OF THE MISSION. -CHANGING, SELLING OR LICENSING THE NAME OF THE CORPORATION. -APPROVING OR PERMITTING THE USE OF OTHER EXPLOITATION OF THE NAME OF THE CORPORATION BY ANY PARTY, OTHER THAN THE DESIGNATOR, ANY AFFILIATE OR AFFILIATED ENTITY OF THE DESIGNATOR AND, SOLELY IN CONNECTION WITH THE CORPORATION'S ACTIVITIES IN FURTHERANCE OF THE MISSION. -APPOINTING, ELECTING OR REMOVING ANY DIRECTOR OF THE CORPORATION AND FILLING OF ANY VACANCY OF THE BOARD. -INCREASING OR DECREASING THE NUMBER OF DIRECTOR SEATS ON THE BOARD. -APPOINTING, ELECTING OR REMOVING THE CHAIRPERSON -ACCEPTING CONTRIBUTIONS FROM ANY PARTY OTHER THAN FROM THE DESIGNATOR, ANY AFFILIATE OR AFFILIATED ENTITY OF THE DESIGNATOR, OR ANY DONOR ADVISED FUND IN WHICH THE DESIGNATION OR AFFILIATE HAVE ADVISORY PRIVILEGES. OTHER PARTY FUNDING CAN BE ACCEPTED IF THE DESIGNATOR FUNDING SOURCE HAS A MATERIAL BREACH AND ADDITIONAL FUNDING IS NEEDED. -APPROVAL OR EFFECTING OF A MATERIAL SALE OF ASSETS OR MERGER OF THE ORGANIZATION OR CONVERSION INTO ANOTHER FORM OF ENTITY. -APPROVAL OF ACTION CAUSING CHANGE FROM EXEMPT STATUS UNDER 501(A) OF THE CODE. -APPROVAL FOR COMMENCING BANKRUPTCY, INSOLVENCY OR RELIEF OF DEBTORS. -APPROVAL, PERMITTING OR EFFECTING ANY TRANSACTION TO LIQUIDATE, WIND UP OR DISSOLVE THE CORPORATION. -APPROVAL FOR CHANGE TO ORGANIZATION DOCUMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS PREPARED BY OUR TAX CONSULTANTS. THE DRAFT IS REVIEWED BY THE CFO OF THE ORGANIZATION. THE FORM 990 IS THEN MADE AVAILABLE TO THE BOARD PRIOR TO THE 990 BEING FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>OFFICERS AND DIRECTORS SIGN A CONFLICT OF INTEREST AFFIDAVIT UPON APPOINTMENT. IN CONNECTION WITH ANY ACTUAL OR POSSIBLE CONFLICT OF INTEREST, A COVERED PERSON MUST IMMEDIATELY DISCLOSE TO THE BOARD OR COMMITTEE THE EXISTENCE AND NATURE OF HIS OR HER FINANCIAL INTEREST OR ANY DISCLOSABLE RELATIONSHIPS. AFTER A COVERED PERSON HAS DISCLOSED THE EXISTENCE OF A FINANCIAL INTEREST, THE BOARD OR COMMITTEE SHALL DETERMINE IF A CONFLICT OF INTEREST EXISTS. IF A TRANSACTION ARISES WHERE THERE IS A CONFLICT OF INTEREST, THE PERSON WITH SUCH CONFLICT IS NOT ALLOWED TO VOTE ON THE TRANSACTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS AND EXECUTIVE COMMITTEE OF THE BOARD REVIEW AND APPROVE THE COMPENSATION OF THE ORGANIZATION'S CO-CHIEF EXECUTIVES AND COO. THE PROCESS INCLUDES A REVIEW OF THE COMPENSATION AGAINST CURRENT COMPARABILITY DATA (SURVEY OR STUDY) PREPARED BY AN INDEPENDENT COMPENSATION CONSULTANT. THE PROCESS IS DOCUMENTED AND WAS LAST COMPLETED SEPTEMBER 2016.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BIOHUB'S GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS WILL BE FURNISHED TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 16B</FormAndLineReferenceDesc>
        <ExplanationTxt>BIOHUB HAS EXECUTED CERTAIN WRITTEN COLLABORATION AGREEMENTS IN FURTHERANCE OF ITS EXEMPT MISSION. SUCH CONTRACTS ARE EXECUTED ON TERMS THAT ARE AT ARM'S LENGTH OR MORE FAVORABLE TO BIOHUB.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>TANGIBLE PROPERTY ELECTION FOOTNOTE</FormAndLineReferenceDesc>
        <ExplanationTxt>SECTION 1.263(A)-1(F) DE MINIMIS SAFE HARBOR ELECTION TAXPAYER IS MAKING THE DE MINIMIS SAFE HARBOR ELECTION UNDER TREAS. REG. 1.263(A)-1(F) FOR ALL ELIGIBLE AMOUNTS PAID OR INCURRED DURING THE TAXABLE YEAR. SECTION 1.263(A)-3(N) CAPITALIZATION ELECTION TAXPAYER HEREBY ELECTS TO CAPITALIZE REPAIR AND MAINTENANCE COSTS UNDER TREAS. REG. 1.263(A)-3(N). THE COSTS WERE INCURRED DURING THE TAXABLE YEAR IN THE ELECTING TAXPAYER'S TRADE OR BUSINESS AND THE ELECTING TAXPAYER TREATS SUCH COSTS AS CAPITAL EXPENDITURES ON ITS BOOKS AND RECORDS.</ExplanationTxt>
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          <BusinessNameLine1Txt>CHAN ZUCKERBERG ADVOCACY</BusinessNameLine1Txt>
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          <AddressLine1Txt>314 LYTTON AVENUE SUITE 200</AddressLine1Txt>
          <CityNm>PALO ALTO</CityNm>
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          <ZIPCd>94301</ZIPCd>
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        <LegalDomicileStateCd>CA</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>N/A</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>CHAN ZUCKERBERG FOUNDATION</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>314 LYTTON AVENUE SUITE 200</AddressLine1Txt>
          <CityNm>PALO ALTO</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94301</ZIPCd>
        </USAddress>
        <EIN>455002209</EIN>
        <PrimaryActivitiesTxt>GRANTMAKING</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>CA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>PF</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>THE PRIMARY SCHOOL</BusinessNameLine1Txt>
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          <AddressLine1Txt>314 LYTTON AVENUE SUITE 200</AddressLine1Txt>
          <CityNm>PALO ALTO</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94301</ZIPCd>
        </USAddress>
        <EIN>364858582</EIN>
        <PrimaryActivitiesTxt>SOCIAL WELFARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>CA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(4)</ExemptCodeSectionTxt>
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        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>THE PRIMARY SCHOOL - EAST PALO ALTO</BusinessNameLine1Txt>
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          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94301</ZIPCd>
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        <EIN>473334579</EIN>
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        <LegalDomicileStateCd>CA</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>LINE 2</PublicCharityStatusTxt>
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        <ControlledOrganizationInd>0</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>OPENNESS FOUNDATION</BusinessNameLine1Txt>
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          <CityNm>PALO ALTO</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94301</ZIPCd>
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        <EIN>270889149</EIN>
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        <LegalDomicileStateCd>CA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>PF</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>FACEBOOK INC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1601 WILLOW ROAD</AddressLine1Txt>
          <CityNm>MENLO PARK</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94025</ZIPCd>
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        <PrimaryActivitiesTxt>SOCIAL MEDIA SERVICE COMPANY</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
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      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
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      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
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      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>