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      </CurrentYearMinus3Years>
      <PermanentEndowmentEOYBalance>0.99860</PermanentEndowmentEOYBalance>
      <TermEndowmentEOYBalance>0.00140</TermEndowmentEOYBalance>
      <EndowmentsHeldByUnrelatedOrgs>0</EndowmentsHeldByUnrelatedOrgs>
      <EndowmentsHeldByRelatedOrgs>0</EndowmentsHeldByRelatedOrgs>
      <LeaseholdImprovements>
        <OtherCostOrOtherBasis>12895671</OtherCostOrOtherBasis>
        <Depreciation>3310905</Depreciation>
        <BookValue>9584766</BookValue>
      </LeaseholdImprovements>
      <OtherLandBuildings>
        <OtherCostOrOtherBasis>4135624</OtherCostOrOtherBasis>
        <Depreciation>2294082</Depreciation>
        <BookValue>1841542</BookValue>
      </OtherLandBuildings>
      <TotalOfBookValueLandBuildings>11426308</TotalOfBookValueLandBuildings>
      <TotalRevenue>7686121</TotalRevenue>
      <TotalExpenses>7819442</TotalExpenses>
      <ExcessOrDeficitForYear>-133321</ExcessOrDeficitForYear>
      <NetUnrealizedGLOnInvestments>-163016</NetUnrealizedGLOnInvestments>
      <TotalAdjustments>-163016</TotalAdjustments>
      <ExcessOrDeficitPerFS>-296337</ExcessOrDeficitPerFS>
      <TotRevenueEtcAuditedFinclStmt>7592125</TotRevenueEtcAuditedFinclStmt>
      <NetUnrealizedGainsInvestments>-163016</NetUnrealizedGainsInvestments>
      <DonatedSrvcAndUseOfFacilities>69020</DonatedSrvcAndUseOfFacilities>
      <RevenueNotRptdF990>-93996</RevenueNotRptdF990>
      <RevenueSubtotal>7686121</RevenueSubtotal>
      <RevenueNotRptdOnFinStmt>0</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>7686121</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>7888462</TotExpensesEtcAuditedFinclStmt>
      <DonatedServicesUseOfFacilities>69020</DonatedServicesUseOfFacilities>
      <ExpensesNotRptdF990>69020</ExpensesNotRptdF990>
      <ExpensesSubtotal>7819442</ExpensesSubtotal>
      <ExpensesNotRptdOnFinStmt>0</ExpensesNotRptdOnFinStmt>
      <TotalExpensesPerForm990>7819442</TotalExpensesPerForm990>
      <Form990ScheduleDPartXIV>
        <Identifier>DESCRIPTION OF INTENDED USE OF ENDOWMENT FUNDS:</Identifier>
        <ReturnReference>PART V, LINE 4:</ReturnReference>
        <Explanation>ENDOWMENTS ARE HELD TO SUPPORT THE WORK OF RESEARCH PROFESSORS,POSTDOCTORAL SCHOLARS, AND MATHEMATICS CIRCLE PROGRAMS.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>DESCRIPTION OF UNCERTAIN TAX POSITIONS UNDER FIN 48:</Identifier>
        <ReturnReference>PART X:</ReturnReference>
        <Explanation>FOLLOWING THE ACCOUNTING GUIDANCE FOR UNCERTAIN TAX POSITIONS, MANAGEMENT CONCLUDED THERE ARE NO UNCERTAIN TAX POSITIONS AT JULY 31, 2012 AND 2011.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Explanation>SCHEDULE D, PART V, LINE 1, COLUMN (A): THE BALANCE WAS ADJUSTED TO REFLECT THE RECLASSIFICATION IN THE AUDITED FINANCIAL STATEMENTS IN AMOUNT OF $133,945.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <RecordsMaintained>1</RecordsMaintained>
      <NoGrantMoreThan5000>X</NoGrantMoreThan5000>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>STIPENDS, PER DIEM AND TRAVEL REIMBURSMENT</TypeOfGrant>
        <NumberOfRecipients>480</NumberOfRecipients>
        <AmountOfCashGrant>1224230</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIV>
        <Identifier>PROCEDURE FOR MONITORING GRANTS IN THE U.S.:</Identifier>
        <ReturnReference>PART I, LINE 2:</ReturnReference>
        <Explanation>SCHEDULE I, PART I, LINE 2: MSRI REGUIRES SUBMISSION OF TRAVEL RECEIPTS BEFORE REIMBURSING THE GRANTEES' EXPENSES. IN ADDITION, FOR NATIONAL SECURITY GRANTS, VERIFICATION OF THE RECEPIENTS' UNITED STATES CITIZENSHIP IS OBTAINED.</Explanation>
      </Form990ScheduleIPartIV>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <TravelForCompanions>X</TravelForCompanions>
      <DiscretionarySpendingAccount>X</DiscretionarySpendingAccount>
      <HousingAllowanceOrResidence>X</HousingAllowanceOrResidence>
      <WrittenPolicyReTAndEExpenses>0</WrittenPolicyReTAndEExpenses>
      <SubstantiationRequired>0</SubstantiationRequired>
      <CompensationCommittee>X</CompensationCommittee>
      <WrittenEmploymentContract>X</WrittenEmploymentContract>
      <CompensationSurvey>X</CompensationSurvey>
      <BoardOrCommitteeApproval>X</BoardOrCommitteeApproval>
      <SeverancePayment>0</SeverancePayment>
      <SupplementalNonqualRetirePlan>0</SupplementalNonqualRetirePlan>
      <EquityBasedCompArrangement>0</EquityBasedCompArrangement>
      <CompBasedOnRevenueOfFilingOrg>0</CompBasedOnRevenueOfFilingOrg>
      <CompBasedOnRevenueRelatedOrgs>0</CompBasedOnRevenueRelatedOrgs>
      <CompBasedNetEarningsFilingOrg>0</CompBasedNetEarningsFilingOrg>
      <CompBasedNetEarningsRelateOrgs>0</CompBasedNetEarningsRelateOrgs>
      <AnyNonFixedPayments>0</AnyNonFixedPayments>
      <InitialContractException>0</InitialContractException>
      <Form990ScheduleJPartII>
        <NamePerson>HELENE BARCELO</NamePerson>
        <BaseCompensationFilingOrg>185081</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>19100</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>16376</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>220557</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>DAVID AUCKLY</NamePerson>
        <BaseCompensationFilingOrg>132177</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>11620</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>14699</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>158496</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartIII>
        <Identifier>SUPPLEMENTAL INFORMATION</Identifier>
        <ReturnReference>PART III</ReturnReference>
        <Explanation>MSRI OFFERS A MONETARY HOUSE ALLOWANCE AND A TRAVEL ALLOWANCE TO INCENT SUCCESSFUL JOB CANDIDATES TO ACCEPT THEIR OFFER. THE COST OF LIVING IS VERY HIGH IN THE CA BAY AREA. THE ANNUAL VALUE OF THE HOUSING ALLOWANCE RECEIVED FOR THE DEPUTY DIRECTOR AND ASSOCIATE DIRECTOR POSITIONS WERE $18,000 AND $21,600, RESPECTIVELY. THE ANNUAL COST OF TRAVEL ALLOWANCE WAS $10,000 AND THE AMOUNT OCCASIONALY USED FOR SPOUSAL TRAVEL WAS $1,470.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <SecuritiesPubliclyTraded>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>10000</NumberOfContributions>
        <NoncashContribsRptdF990>138300</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>FMV</MethodOfDeterminingRevenues>
      </SecuritiesPubliclyTraded>
      <OtherNonCashContributionsTable>
        <NonCashCheckbox>X</NonCashCheckbox>
        <Description>BOOKS</Description>
        <NumberOfContributions>1057</NumberOfContributions>
        <NoncashContribsRptdF990>26198</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>FMV</MethodOfDeterminingRevenues>
      </OtherNonCashContributionsTable>
      <AnyPropertyThatMustBeHeld>0</AnyPropertyThatMustBeHeld>
      <ReviewProcessUnusualNCGifts>1</ReviewProcessUnusualNCGifts>
      <ThirdPartiesUsed>0</ThirdPartiesUsed>
      <Form990ScheduleMPartII>
        <Identifier>METHOD FOR DETERMINING NUMBER OF CONTRIBUTORS:</Identifier>
        <ReturnReference>PART I, COLUMN (B):</ReturnReference>
        <Explanation>ORGANIZATION REPORTS A NUMBER OF ITEMS RECEIVED ON SCHEDULE M.</Explanation>
      </Form990ScheduleMPartII>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION A, LINE 2</ReturnReference>
        <Explanation>SOME OF THE DIRECTORS HAVE CAREERS AS INVESTORS AND FELLOW DIRECTORS HOLD INVESTMENTS IN FUNDS THEY MANAGE.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 11</ReturnReference>
        <Explanation>THE FORM 990 IS DISTRIBUTED TO THE FINANCE COMMITTEE FOR REVIEW. COMMITTEE MEMBERS PROVIDE FEEDBACK AND CHANGES TO CONTENT IN THE FORM 990 DIRECTLY TO THE CONTROLLER. ALL CHANGES ARE REFLECTED IN THE FORM 990 BY THE CONTROLLER PRIOR TO FILING THE FORM 990 WITH THE IRS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 12</ReturnReference>
        <Explanation>CONFLICT OF INTEREST STATEMENTS ARE PROVIDED TO THE BOARD OF TRUSTEES AT THE ANNUAL TRUSTEE MEETING. THE BOARD OF TRUSTEES SIGN AND RETURN THE COMPLETED FORMS FOR REVIEW. CONFLICTS OF INTERESTED THAT ARE IDENTIFIED ARE ADDRESSED AT THAT TIME.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 15</ReturnReference>
        <Explanation>THE CONTROLLER PREPARES AND SUBMITS A COMPARATIVE SALARY ANALYSIS FOR EACH OFFICER LEVEL POSITION TO THE COMPENSATION COMMITTEE FOR REVIEW. BASED ON REVIEW, THE STEERING COMMITTEE SUBMITS A RECOMMENDATION FOR APPROVAL OF OFFICER COMPENSATION BY THE BOARD OF TRUSTEE. KEY EMPLOYEE COMPENSATION IS AUTHORIZED BY THE DIRECTOR AND APPROVED BY THE BOARD OF TRUSTEES IN THE ANNUAL BUDGETING PROCESS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>DOCUMENTS ARE MADE AVAILABLE UPON REQUEST.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>CHANGES IN NET ASSETS OR FUND BALANCES:</Identifier>
        <ReturnReference>FORM 990, PART XI, LINE 5:</ReturnReference>
        <Explanation>NET UNREALIZED LOSSES ON INVESTMENTS: -163,016.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART XII, LINE 2C</ReturnReference>
        <Explanation>NO CHANGE IN THE AUDIT COMMITTEE'S OVERSIGHT PROCESS.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
  </ReturnData>
</Return>