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        <EOYAmt>581780417</EOYAmt>
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      <DonatedServicesAndUseFcltsAmt>3250000</DonatedServicesAndUseFcltsAmt>
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      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
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        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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          <BusinessNameLine1Txt>affiliated hospitals of Stanford</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <CityNm>Stanford</CityNm>
        <StateAbbreviationCd>CA</StateAbbreviationCd>
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      <HospitalNameAndAddressGrp>
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          <BusinessNameLine1Txt>affiliated hospitals of UCSF</BusinessNameLine1Txt>
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        <CityNm>San Francisco</CityNm>
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        <FormAndLineReferenceDesc>Schedule A</FormAndLineReferenceDesc>
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          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
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        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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        <BookValueAmt>977343</BookValueAmt>
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      <TotalBookValueLandBuildingsAmt>977343</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
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      <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 and Section 23701d of the California Revenue and Taxation Code. The Organization has no unrecognized tax benefits or liabilities as of December 31, 2016.</ExplanationTxt>
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      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
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          <BusinessNameLine1Txt>Stanford</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>3145 Porter Drive</AddressLine1Txt>
          <CityNm>palo Alto</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94304</ZIPCd>
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        <RecipientEIN>941156365</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>2800000</CashGrantAmt>
        <PurposeOfGrantTxt>Scientific and Medical Research</PurposeOfGrantTxt>
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      <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>
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        <PurposeOfGrantTxt>Scientific and Medical Research</PurposeOfGrantTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>The HUB will obligate the use of the gift funds only for the purpose for which the HUB makes the award. The HUB will require periodic written reports concerning the use of the gift as appropriate and retain for the HUB the right to withhold or recover fund in cases of misuse as appropriate. from time to time, the HUB will make discretionary gifts to 501(c)(3) organizations without the need for a written proposal.</ExplanationTxt>
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        <PersonNm>Dr Stephen Quake</PersonNm>
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        <CashGrantAmt>500000</CashGrantAmt>
        <TypeOfAssistanceTxt>Award to conduct research</TypeOfAssistanceTxt>
        <AssistancePurposeTxt>Award provided to Stanford University to support research lab of Dr. Quake</AssistancePurposeTxt>
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      <GrntAsstBnftInterestedPrsnGrp>
        <PersonNm>Dr Joseph Derisi</PersonNm>
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        <TypeOfAssistanceTxt>Award to conduct research</TypeOfAssistanceTxt>
        <AssistancePurposeTxt>Award provided to UCSF to support research lab of Dr. Derisi</AssistancePurposeTxt>
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        <Desc>Furniture &amp; Fixtures</Desc>
        <ContributionCnt>182</ContributionCnt>
        <NoncashContributionsRptF990Amt>371000</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>fair market value</MethodOfDeterminingRevenuesTxt>
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      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>DR. CHAN (PRESIDENT, 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>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>An unrelated party, Wide Center Advisors, LLC, provides operational consulting services to the HUB, including, but not limited to, support of the organization's financial, budgeting, staffing, facilities, and professional services capacities.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BYLAWS OF THE HUB WERE AMENDED TO INCLUDE THE FOLLOWING SIGNIFICANT CHANGES: THE MEMBER OF DIRECTORS SHALL BE TWO, WHICH MAY BE INCREASED OR DECREASED. TWO DIRECTORS OF THE BOARD SHALL BE DESIGNATED BY THE CHAN ZUCKERBERG INITIATIVE, LLC AND SUCH APPOINTED TWO DIRECTORS (DESIGNATED DIRECTORS) ARE REQUIRED TO NOTIFY THE ORGANIZATION IF THERE IS A SUCCESSOR DESIGNATOR DUE TO MERGER, REORGANIZATION, OR SALE OF THE DESIGNATOR'S COMPANY. IF THE DESIGNATOR CEASES TO EXIST AND THERE IS NO SUCCESSOR, THE PROVISION OF THE BYLAWS RELATING TO THE DESIGNATED DIRECTORS SHALL NO LONGER BE IN EFFECT. DESIGNATED DIRECTOR APPROVAL IS REQUIRED FOR THE SIGNIFICANT ITEMS LISTED BELOW: -CHANGING THE NATURE OR SCOPE OF THE MISSION. -CHANGING, SELLING OR LICENSING THE NAME OF THE CORPORATION. -APPROVING OR PERMITTING THE USE OR 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>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHAN ZUCKERBERG INIATIVE, 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>
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      <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 OR 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 interim CFO of the organization. The Form 990 is then made available to the rest of 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. 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>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS AND EXECUTIVE COMMITTEE OF THE BOARD REVIEW AND APPROVE THE COMPENSATION OF THE ORGANIZATION'S CO-Chief Executives. 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>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE HUB'S GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS WILL BE FURNISHED TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
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</Return>