Liabilities / Assets
19th percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 27-6202703 • Boston, MA
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
19th percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
20th percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
95th percentile
Higher net margin than 95% of similar nonprofits.
Top Officer Pay
25th percentile
Higher top officer pay than 25% of similar nonprofits.
Top officer pay equals 0.0% of source-year revenue.
Asset Growth
36th percentile
Faster asset growth than 36% of similar nonprofits.
Revenue Growth
15th percentile
Faster revenue growth than 15% of similar nonprofits.
Assets
Up$11,183,346
Up $69,625 (+0.6%) from 2023
Liabilities
Flat$0
Flat from 2023
Net Assets
Up$11,183,346
Up $69,625 (+0.6%) from 2023
Revenue
Down$85,225
Down $16,921 (-17%) from 2023
Expenses
Down$15,600
Down $584,400 (-97%) from 2023
Net Income
Up$69,625
Up $567,479 (+114%) from 2023
Most recent year
2024 • Form 990PFDetailed filing. Detailed filing data is available for this year.
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| NANCY G ZIMMERMAN | Trustee | - | $0 | - | - |
| ANDREI SHLEIFER | Trustee | - | $0 | - | - |
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYBookValueAmt | 0 | 58712 |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYBookValueAmt | 1 | 633112 |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYBookValueAmt | 2 | 250246 |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYBookValueAmt | 3 | 201709 |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYFMVAmt | 0 | 317735 |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYFMVAmt | 1 | 3100518 |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYFMVAmt | 2 | 1246752 |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYFMVAmt | 3 | 286108 |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/StockNm | 0 | 1,100 SHS ISHARES S&P 500 ETF |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/StockNm | 1 | 26,260 SHS VANGUARD FINANCIALS ETF |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/StockNm | 2 | 4,800 SHS VANGUARD RUSSELL 3000 ETF |
| InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/StockNm | 3 | 3,780 UTILITIES SEL SECT SPDR FD |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/BookValueAmt | 0 | 143205 |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/BookValueAmt | 1 | 5000000 |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/BookValueAmt | 2 | 4756488 |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/CategoryOrItemTxt | 0 | 427.744 UNITS BIL, LTD |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/CategoryOrItemTxt | 1 | 9,314.938 UNITS BIL, LTD |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/CategoryOrItemTxt | 2 | 47,878.596 SHS EQUITY DISLOCATION FUND A OFFSHORE |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/EOYFMVAmt | 0 | 307755 |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/EOYFMVAmt | 1 | 6701940 |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/EOYFMVAmt | 2 | 6458074 |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/ListedAtCostOrFMVCd | 0 | AT COST |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/ListedAtCostOrFMVCd | 1 | AT COST |
| InvestmentsOtherSchedule2/InvestmentsOtherGrp/ListedAtCostOrFMVCd | 2 | AT COST |
| IRS990PF/AnalysisIncomeProducingActyGrp/DividendsAndInterestFromSecDtl/ExclusionAmt | 0 | 85223 |
| IRS990PF/AnalysisIncomeProducingActyGrp/DividendsAndInterestFromSecDtl/ExclusionCd | 0 | 14 |
| IRS990PF/AnalysisIncomeProducingActyGrp/IntOnSavAndTempCashInvstGrp/ExclusionAmt | 0 | 2 |
| IRS990PF/AnalysisIncomeProducingActyGrp/IntOnSavAndTempCashInvstGrp/ExclusionCd | 0 | 14 |
| IRS990PF/AnalysisIncomeProducingActyGrp/SubtotalsIncmProducingActyGrp/ExclusionAmt | 0 | 85225 |
| IRS990PF/AnalysisIncomeProducingActyGrp/SubtotalsIncmProducingActyGrp/RelatedOrExemptFunctionIncmAmt | 0 | 0 |
| IRS990PF/AnalysisIncomeProducingActyGrp/SubtotalsIncmProducingActyGrp/UnrelatedBusinessTaxblIncmAmt | 0 | 0 |
| IRS990PF/AnalysisIncomeProducingActyGrp/TotalIncomeProducingActyAmt | 0 | 85225 |
| IRS990PF/AnalysisOfRevenueAndExpenses/CapGainNetIncmNetInvstIncmAmt | 0 | 0 |
| IRS990PF/AnalysisOfRevenueAndExpenses/CompOfcrDirTrstDsbrsChrtblAmt | 0 | 0 |
| IRS990PF/AnalysisOfRevenueAndExpenses/CompOfcrDirTrstNetInvstIncmAmt | 0 | 0 |
| IRS990PF/AnalysisOfRevenueAndExpenses/CompOfcrDirTrstRevAndExpnssAmt | 0 | 0 |
| IRS990PF/AnalysisOfRevenueAndExpenses/ContriPaidDsbrsChrtblAmt | 0 | 15600 |
| IRS990PF/AnalysisOfRevenueAndExpenses/ContriPaidRevAndExpnssAmt | 0 | 15600 |
| IRS990PF/AnalysisOfRevenueAndExpenses/DividendsNetInvstIncmAmt | 0 | 85223 |
| IRS990PF/AnalysisOfRevenueAndExpenses/DividendsRevAndExpnssAmt | 0 | 85223 |
| IRS990PF/AnalysisOfRevenueAndExpenses/ExcessRevenueOverExpensesAmt | 0 | 69625 |
| IRS990PF/AnalysisOfRevenueAndExpenses/InterestOnSavNetInvstIncmAmt | 0 | 2 |
| IRS990PF/AnalysisOfRevenueAndExpenses/InterestOnSavRevAndExpnssAmt | 0 | 2 |
| IRS990PF/AnalysisOfRevenueAndExpenses/NetInvestmentIncomeAmt | 0 | 85225 |
| IRS990PF/AnalysisOfRevenueAndExpenses/ScheduleBNotRequiredInd | 0 | X |
| IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesDsbrsChrtblAmt | 0 | 15600 |
| IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesNetInvstIncmAmt | 0 | 0 |
| IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesRevAndExpnssAmt | 0 | 15600 |
| IRS990PF/AnalysisOfRevenueAndExpenses/TotalNetInvstIncmAmt | 0 | 85225 |
| IRS990PF/AnalysisOfRevenueAndExpenses/TotalRevAndExpnssAmt | 0 | 85225 |
| IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesDsbrsChrtblAmt | 0 | 0 |
| IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesNetInvstIncmAmt | 0 | 0 |
| IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesRevAndExpnssAmt | 0 | 0 |
| IRS990PF/ChgInNetAssetsFundBalancesGrp/ExcessRevenueOverExpensesAmt | 0 | 69625 |
| IRS990PF/ChgInNetAssetsFundBalancesGrp/OtherDecreasesAmt | 0 | 0 |
| IRS990PF/ChgInNetAssetsFundBalancesGrp/OtherIncreasesAmt | 0 | 0 |
| IRS990PF/ChgInNetAssetsFundBalancesGrp/SubtotalAmt | 0 | 11183346 |
| IRS990PF/ChgInNetAssetsFundBalancesGrp/TotNetAstOrFundBalancesBOYAmt | 0 | 11113721 |
| IRS990PF/ChgInNetAssetsFundBalancesGrp/TotNetAstOrFundBalancesEOYAmt | 0 | 11183346 |
| IRS990PF/DistributableAmountGrp/DeductionFromDistributableAmt | 0 | 0 |
| IRS990PF/DistributableAmountGrp/DistributableAsAdjustedAmt | 0 | 876483 |
| IRS990PF/DistributableAmountGrp/DistributableBeforeAdjAmt | 0 | 876483 |
| IRS990PF/DistributableAmountGrp/DistributableBeforeDedAmt | 0 | 876483 |
| IRS990PF/DistributableAmountGrp/MinimumInvestmentReturnAmt | 0 | 877668 |
| IRS990PF/DistributableAmountGrp/RecoveriesQualfiedDistriAmt | 0 | 0 |
| IRS990PF/DistributableAmountGrp/TaxBasedOnInvestmentIncomeAmt | 0 | 1185 |
| IRS990PF/DistributableAmountGrp/TotalTaxAmt | 0 | 1185 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/AppliedToESTaxAmt | 0 | 19961 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/BackupWithholdingWithheldAmt | 0 | 0 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/EsPenaltyAmt | 0 | 0 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/EstimatedPlusOvpmtIncmTxAmt | 0 | 21146 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/ExemptFrgnOrgTaxWthldAtSrceAmt | 0 | 0 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/ExtsnRequestIncomeTaxPaidAmt | 0 | 0 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/Form2220AttachedInd | 0 | X |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/InvestmentIncomeExciseTaxAmt | 0 | 1185 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/OverpaymentAmt | 0 | 19961 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/RefundAmt | 0 | 0 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/SubtitleATaxAmt | 0 | 0 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/SubtotalAmt | 0 | 1185 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxBasedOnInvestmentIncomeAmt | 0 | 1185 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxUnderSection511Amt | 0 | 0 |
| IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TotalPaymentsAndCreditsAmt | 0 | 21146 |
| IRS990PF/FMVAssetsEOYAmt | 0 | 18559029 |
| IRS990PF/Form990PFBalanceSheetsGrp/AdditionalPaidInCapitalBOYAmt | 0 | 0 |
| IRS990PF/Form990PFBalanceSheetsGrp/AdditionalPaidInCapitalEOYAmt | 0 | 0 |
| IRS990PF/Form990PFBalanceSheetsGrp/CapitalStockBOYAmt | 0 | 0 |
| IRS990PF/Form990PFBalanceSheetsGrp/CapitalStockEOYAmt | 0 | 0 |
| IRS990PF/Form990PFBalanceSheetsGrp/CashBOYAmt | 0 | 21264 |
| IRS990PF/Form990PFBalanceSheetsGrp/CashEOYAmt | 0 | 24325 |
| IRS990PF/Form990PFBalanceSheetsGrp/CashEOYFMVAmt | 0 | 24598 |
| IRS990PF/Form990PFBalanceSheetsGrp/CorporateStockBOYAmt | 0 | 1143779 |
| IRS990PF/Form990PFBalanceSheetsGrp/CorporateStockEOYAmt | 0 | 1143779 |
| IRS990PF/Form990PFBalanceSheetsGrp/CorporateStockEOYFMVAmt | 0 | 4951113 |
| IRS990PF/Form990PFBalanceSheetsGrp/OrgDoesNotFollowFASB117Ind | 0 | X |
| IRS990PF/Form990PFBalanceSheetsGrp/OtherInvestmentsBOYAmt | 0 | 9899693 |
| IRS990PF/Form990PFBalanceSheetsGrp/OtherInvestmentsEOYAmt | 0 | 9899693 |
| IRS990PF/Form990PFBalanceSheetsGrp/OtherInvestmentsEOYFMVAmt | 0 | 13467769 |
| IRS990PF/Form990PFBalanceSheetsGrp/RetainedEarningBOYAmt | 0 | 11113721 |
| IRS990PF/Form990PFBalanceSheetsGrp/RetainedEarningEOYAmt | 0 | 11183346 |
| IRS990PF/Form990PFBalanceSheetsGrp/SavAndTempCashInvstBOYAmt | 0 | 48985 |
| IRS990PF/Form990PFBalanceSheetsGrp/SavAndTempCashInvstEOYAmt | 0 | 115549 |
| IRS990PF/Form990PFBalanceSheetsGrp/SavAndTempCashInvstEOYFMVAmt | 0 | 115549 |
| IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsBOYAmt | 0 | 11113721 |
| IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsEOYAmt | 0 | 11183346 |
| IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsEOYFMVAmt | 0 | 18559029 |
| IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesBOYAmt | 0 | 0 |
| IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesEOYAmt | 0 | 0 |
| IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesNetAstBOYAmt | 0 | 11113721 |
| IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesNetAstEOYAmt | 0 | 11183346 |
| IRS990PF/Form990PFBalanceSheetsGrp/TotNetAstOrFundBalancesBOYAmt | 0 | 11113721 |
| IRS990PF/Form990PFBalanceSheetsGrp/TotNetAstOrFundBalancesEOYAmt | 0 | 11183346 |
| IRS990PF/MethodOfAccountingCashInd | 0 | X |
| IRS990PF/MinimumInvestmentReturnGrp/AcquisitionIndebtednessAmt | 0 | 0 |
| IRS990PF/MinimumInvestmentReturnGrp/AdjustedTotalFMVOfUnusedAstAmt | 0 | 17820673 |
| IRS990PF/MinimumInvestmentReturnGrp/AverageMonthlyCashBalancesAmt | 0 | 93426 |
| IRS990PF/MinimumInvestmentReturnGrp/AverageMonthlyFMVOfSecAmt | 0 | 11212933 |
| IRS990PF/MinimumInvestmentReturnGrp/CashDeemedCharitableAmt | 0 | 267310 |
| IRS990PF/MinimumInvestmentReturnGrp/FMVAllOtherNoncharitableAstAmt | 0 | 6514314 |
| IRS990PF/MinimumInvestmentReturnGrp/MinimumInvestmentReturnAmt | 0 | 877668 |
| IRS990PF/MinimumInvestmentReturnGrp/NetVlNoncharitableAssetsAmt | 0 | 17553363 |
| IRS990PF/MinimumInvestmentReturnGrp/ReductionClaimedAmt | 0 | 0 |
| IRS990PF/MinimumInvestmentReturnGrp/TotalFMVOfUnusedAssetsAmt | 0 | 17820673 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/CompOfHghstPdCntrctOrNONETxt | 0 | NONE |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/CompOfHghstPdEmplOrNONETxt | 0 | NONE |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/ContractorPaidOver50kCnt | 0 | 0 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/AverageHrsPerWkDevotedToPosRt | 0 | 0.00 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/AverageHrsPerWkDevotedToPosRt | 1 | 0.00 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/CompensationAmt | 0 | 0 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/CompensationAmt | 1 | 0 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/EmployeeBenefitProgramAmt | 0 | 0 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/EmployeeBenefitProgramAmt | 1 | 0 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/ExpenseAccountOtherAllwncAmt | 0 | 0 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/ExpenseAccountOtherAllwncAmt | 1 | 0 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm | 0 | NANCY G ZIMMERMAN |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm | 1 | ANDREI SHLEIFER |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt | 0 | TRUSTEE |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt | 1 | TRUSTEE |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/AddressLine1Txt | 0 | 888 BOYLSTON STREET 15TH FLOOR |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/AddressLine1Txt | 1 | 888 BOYLSTON STREET 15TH FLOOR |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/CityNm | 0 | BOSTON |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/CityNm | 1 | BOSTON |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/StateAbbreviationCd | 1 | MA |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/ZIPCd | 0 | 02199 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/ZIPCd | 1 | 02199 |
| IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OtherEmployeePaidOver50kCnt | 0 | 0 |
| IRS990PF/Organization501c3ExemptPFInd | 0 | X |
| IRS990PF/PFQualifyingDistributionsGrp/ExpensesAndContributionsAmt | 0 | 15600 |
| IRS990PF/PFQualifyingDistributionsGrp/ProgramRelatedInvstTotalAmt | 0 | 0 |
| IRS990PF/PFQualifyingDistributionsGrp/QualifyingDistributionsAmt | 0 | 15600 |
| IRS990PF/RlnOfActyToAccomOfExmptPrpsGrp/RlnOfActyToAccomOfExmptPrpsGrp/LineNumberTxt | 0 | 3 |
| IRS990PF/RlnOfActyToAccomOfExmptPrpsGrp/RlnOfActyToAccomOfExmptPrpsGrp/LineNumberTxt | 1 | 4 |
| IRS990PF/RlnOfActyToAccomOfExmptPrpsGrp/RlnOfActyToAccomOfExmptPrpsGrp/LineNumberTxt | 2 | 8 |
| IRS990PF/RlnOfActyToAccomOfExmptPrpsGrp/RlnOfActyToAccomOfExmptPrpsGrp/RelationshipStatementTxt | 0 | INTEREST ON FOUNDATION INVESTMENTS |
| IRS990PF/RlnOfActyToAccomOfExmptPrpsGrp/RlnOfActyToAccomOfExmptPrpsGrp/RelationshipStatementTxt | 1 | INTEREST AND DIVIDENDS ON FOUNDATION INVESTMENTS |
| IRS990PF/RlnOfActyToAccomOfExmptPrpsGrp/RlnOfActyToAccomOfExmptPrpsGrp/RelationshipStatementTxt | 2 | GAINS AND LOSSES ON FOUNDATION INVESTMENTS |
| IRS990PF/StatementsRegardingActy4720Grp/BrrwOrLendDisqualifiedPrsnInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/BusinessHoldingsInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/FurnGoodsDisqualifiedPrsnInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/GrantsToIndividualsInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/GrantsToOrganizationsInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/InfluenceElectionInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/InfluenceLegislationInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/JeopardyInvestmentsInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/NoncharitablePurposeInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/PayCompDisqualifiedPrsnInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/PaymentToGovernmentOfficialInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/SaleOrExchDisqualifiedPrsnInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/SubjToTaxRmnrtnExPrchtPymtInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/TransferAstDisqualifiedPrsnInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/UncorrectedPriorActsInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/UncorrectedPYJeopardyInvstInd | 0 | 0 |
| IRS990PF/StatementsRegardingActy4720Grp/UndistributedIncomePYInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/ActivitiesNotPreviouslyRptInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/AtLeast5000InAssetsInd | 0 | 1 |
| IRS990PF/StatementsRegardingActyGrp/ChangesToArticlesOrBylawsInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/ComplyWithPublicInspRqrInd | 0 | 1 |
| IRS990PF/StatementsRegardingActyGrp/DonorAdvisedFundInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/ForeignAccountsQuestionInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/Form1120POLFiledInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/Form990PFFiledWithAttyGenInd | 0 | 1 |
| IRS990PF/StatementsRegardingActyGrp/IndividualWithBooksNm | 0 | JOHN N SPINNEY JR |
| IRS990PF/StatementsRegardingActyGrp/LegislativePoliticalActyInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/AddressLine1Txt | 0 | 888 BOYLSTON STREET 15TH FLOOR |
| IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/CityNm | 0 | BOSTON |
| IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/StateAbbreviationCd | 0 | MA |
| IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/ZIPCd | 0 | 02199 |
| IRS990PF/StatementsRegardingActyGrp/MoreThan100SpentInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/NewSubstantialContributorsInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/OrganizationDissolvedEtcInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/OrgReportOrRegisterStateCd | 0 | MA |
| IRS990PF/StatementsRegardingActyGrp/OwnControlledEntityInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/PhoneNum | 0 | 6174973545 |
| IRS990PF/StatementsRegardingActyGrp/PrivateOperatingFoundationInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/Section4955ManagersTaxAmt | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/Section4955OrganizationTaxAmt | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/Section508eRqrSatisfiedInd | 0 | 1 |
| IRS990PF/StatementsRegardingActyGrp/TaxReimbursedAmt | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/UnrelatedBusIncmOverLimitInd | 0 | 0 |
| IRS990PF/StatementsRegardingActyGrp/WebsiteAddressTxt | 0 | N/A |
| IRS990PF/SumOfProgramRelatedInvstGrp/TotalAmt | 0 | 0 |
| IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt | 0 | 15600 |
| IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt | 0 | CHARITABLE CONTRIBUTION UNRESTRICTED |
| IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt | 0 | NOAH HELLER- RASHI MATH DIAGNOSTIC PHASE |
| IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt | 0 | PUBLIC CHARITY |
| IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt | 0 | NONE |
| IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt | 0 | 5 RINDGE TERRACE |
| IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm | 0 | CAMBRIDGE |
| IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd | 0 | MA |
| IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd | 0 | 02140 |
| IRS990PF/SupplementaryInformationGrp/OnlyContriToPreselectedInd | 0 | X |
| IRS990PF/SupplementaryInformationGrp/TotalGrantOrContriApprvFutAmt | 0 | 0 |
| IRS990PF/SupplementaryInformationGrp/TotalGrantOrContriPdDurYrAmt | 0 | 15600 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/LoansOrLoanGuaranteesInd | 0 | 0 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/PerformanceOfServicesEtcInd | 0 | 0 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/PurchaseOfAssetsNonchrtblEOInd | 0 | 0 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/ReimbursementArrangementsInd | 0 | 0 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/RelationshipsNonchrtblEOInd | 0 | 0 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/RentalOfFacilitiesOthAssetsInd | 0 | 0 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/SalesOrExchangesOfAssetsInd | 0 | 0 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/SharingOfFacilitiesEtcInd | 0 | 0 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/TrnsfrOfCashToNonchrtblEOInd | 0 | 0 |
| IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/TrnsfrOtherAssetNonchrtblEOInd | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/AppliedToCurrentYearAmt | 0 | 15600 |
| IRS990PF/UndistributedIncomeGrp/AppliedToPriorYearsAmt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/AppliedToYear1Amt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/CorpusDistri170b1EOr4942g3Amt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/DistributableAsAdjustedAmt | 0 | 876483 |
| IRS990PF/UndistributedIncomeGrp/ExcessDistributionCyovAppCYAmt | 0 | 860883 |
| IRS990PF/UndistributedIncomeGrp/ExcessDistributionCyovYr2Amt | 0 | 6831221 |
| IRS990PF/UndistributedIncomeGrp/ExcessDistriCyovAppCYCorpusAmt | 0 | 860883 |
| IRS990PF/UndistributedIncomeGrp/ExcessDistriCyovFromYr5Amt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/ExcessDistriCyovToNextYrAmt | 0 | 5970338 |
| IRS990PF/UndistributedIncomeGrp/ExcessFromYear2Amt | 0 | 5970338 |
| IRS990PF/UndistributedIncomeGrp/PriorYearDeficiencyOrTaxAmt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/PriorYearUndistributedIncmAmt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/QualifyingDistributionsAmt | 0 | 15600 |
| IRS990PF/UndistributedIncomeGrp/RemainingDistriFromCorpusAmt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/Taxable1Amt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/Taxable2Amt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/TotalCorpusAmt | 0 | 5970338 |
| IRS990PF/UndistributedIncomeGrp/TotalExcessDistributionCyovAmt | 0 | 6831221 |
| IRS990PF/UndistributedIncomeGrp/TotalForPriorYearsAmt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/TreatedAsDistriFromCorpusAmt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/UndistributedIncomeCYAmt | 0 | 0 |
| IRS990PF/UndistributedIncomeGrp/UndistributedIncomePYAmt | 0 | 0 |
| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | 1 |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | NANCY G ZIMMERMAN |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | TRUSTEE |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 7814448400 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2025-11-13 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | ZIMMERMAN SHLEIFER CHARITABLE FOUNDATION |
| ReturnHeader/Filer/BusinessName/BusinessNameLine2Txt | 0 | C/O BRACEBRIDGE CAPITAL MANAGEMENT |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | ZIMM |
| ReturnHeader/Filer/EIN | 0 | 276202703 |
| ReturnHeader/Filer/PhoneNum | 0 | 7814448400 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 888 BOYLSTON STREET 15TH FLOOR |
| ReturnHeader/Filer/USAddress/CityNm | 0 | BOSTON |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | MA |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 02199 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | 1 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 042706569 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | O'BRIEN & ASSOCIATES |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 10 KEARNEY ROAD SUITE 305 |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | NEEDHAM |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | MA |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 02494 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 7814448400 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | JOHN J O'BRIEN |
| ReturnHeader/ReturnTs | 0 | 2025-11-13T12:32:25-06:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990PF |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2024-01-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2024-12-31 |
| ReturnHeader/TaxYr | 0 | 2024 |
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