Civic Intelligence

Marilyn Mason Foundation

EIN 38-3317749 • Lincoln, MA

79 Old Sudbury RdLincoln, MA 01773
Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

61st percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

<$500k nonprofits • Source year 2024

Liabilities / Revenue

62nd percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

<$500k nonprofits • Source year 2024

Net Margin

84th percentile

35%

Higher net margin than 84% of similar nonprofits.

<$500k nonprofits • Source year 2024

Top Officer Pay

86th percentile

$2,000

Higher top officer pay than 86% of similar nonprofits.

Top officer pay equals 6.2% of source-year revenue.

<$500k nonprofits • Source year 2024

Asset Growth

84th percentile

30%

Faster asset growth than 84% of similar nonprofits.

<$500k nonprofits • Annualized from 2023 to 2024

Revenue Growth

82nd percentile

42%

Faster revenue growth than 82% of similar nonprofits.

<$500k nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / Assets61st percentile

Assets

Up

$48,955

Up $11,155 (+30%) from 2023

Liabilities

Down

$0

Down $1 (-100%) from 2023

Net Assets

Up

$48,955

Up $11,155 (+30%) from 2023

Operations
Liabilities / Revenue62nd percentileNet Margin84th percentile

Revenue

Up

$32,108

Up $9,491 (+42%) from 2023

Expenses

Up

$20,953

Up $2,133 (+11%) from 2023

Net Income

Up

$11,155

Up $7,358 (+194%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth84th percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$150K$100K$50K$0Assets 2011: $101,533Liabilities 2011: $0Net Assets 2011: $101,5332011Assets 2012: $58,579Liabilities 2012: $0Net Assets 2012: $58,5792012Assets 2013: $37,269Liabilities 2013: $1Net Assets 2013: $37,2692013Assets 2014: $24,667Liabilities 2014: $1Net Assets 2014: $24,6672014Assets 2015: $24,237Liabilities 2015: $1Net Assets 2015: $24,2372015Assets 2016: $37,507Liabilities 2016: $0Net Assets 2016: $37,5072016Assets 2017: $41,608Liabilities 2017: $0Net Assets 2017: $41,6082017Assets 2018: $40,010Liabilities 2018: $0Net Assets 2018: $40,0102018Assets 2019: $39,769Liabilities 2019: $1Net Assets 2019: $39,7692019Assets 2020: $38,445Liabilities 2020: $1Net Assets 2020: $38,4452020Assets 2021: $36,299Liabilities 2021: $1Net Assets 2021: $36,2992021Assets 2022: $34,003Liabilities 2022: $1Net Assets 2022: $34,0032022Assets 2023: $37,800Liabilities 2023: $1Net Assets 2023: $37,8002023Assets 2024: $48,955Liabilities 2024: $0Net Assets 2024: $48,9552024

Highlighted filing

2024

Assets$48,955
Liabilities$0
Net Assets$48,955
Open 2024 Filing

Operations Trend

Revenue Growth82nd percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$100K$50K$0-$50K-$100KExpenses 2011: $10,8332011Expenses 2012: $49,0962012Revenue 2013: $42,840Expenses 2013: $64,150Net Income 2013: -$21,3102013Revenue 2014: $3,939Expenses 2014: $55,155Net Income 2014: -$51,2162014Revenue 2015: $1,720Expenses 2015: $2,150Net Income 2015: -$4302015Revenue 2016: $15,440Expenses 2016: $2,170Net Income 2016: $13,2702016Revenue 2017: $8,271Expenses 2017: $4,170Net Income 2017: $4,1012017Revenue 2018: $3,882Expenses 2018: $5,480Net Income 2018: -$1,5982018Revenue 2019: $5,519Expenses 2019: $5,760Net Income 2019: -$2412019Revenue 2020: $19,217Expenses 2020: $20,541Net Income 2020: -$1,3242020Revenue 2021: $7,218Expenses 2021: $9,364Net Income 2021: -$2,1462021Revenue 2022: $5,374Expenses 2022: $7,970Net Income 2022: -$2,5962022Revenue 2023: $22,617Expenses 2023: $18,820Net Income 2023: $3,7972023Revenue 2024: $32,108Expenses 2024: $20,953Net Income 2024: $11,1552024

Highlighted filing

2024

Revenue$32,108
Expenses$20,953
Net Income$11,155
Open 2024 Filing

Filings

Most recent year

2024 • Form 990PFDetailed filing. Detailed filing data is available for this year.

Open filing
Assets
$48,955
Liabilities
$0
Net assets
$48,955
Revenue
$32,108
Expenses
$20,953
Net income
$11,155
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$0.49$0.00$0.49$0.32$0.21$0.11
2023Detailed filing. Detailed filing data is available for this year.$0.38$0.00$0.38$0.23$0.19$0.04
2022Detailed filing. Detailed filing data is available for this year.$0.34$0.00$0.34$0.05$0.08$0.03
2021Detailed filing. Detailed filing data is available for this year.$0.36$0.00$0.36$0.07$0.09$0.02
2020Detailed filing. Detailed filing data is available for this year.$0.38$0.00$0.38$0.19$0.21$0.01
2019Detailed filing. Detailed filing data is available for this year.$0.40$0.00$0.40$0.06$0.06$0.00
2018Detailed filing. Detailed filing data is available for this year.$0.40$0.00$0.40$0.04$0.05$0.02
2017Detailed filing. Detailed filing data is available for this year.$0.42$0.00$0.42$0.08$0.04$0.04
2016Detailed filing. Detailed filing data is available for this year.$0.38$0.00$0.38$0.15$0.02$0.13
2015Detailed filing. Detailed filing data is available for this year.$0.24$0.00$0.24$0.02$0.02$0.00
2014Detailed filing. Detailed filing data is available for this year.$0.25$0.00$0.25$0.04$0.55$0.51
2013Detailed filing. Detailed filing data is available for this year.$0.37$0.00$0.37$0.43$0.64$0.21
2012Detailed filing. Detailed filing data is available for this year.$0.59$0.00$0.59$0.49
2011Detailed filing. Detailed filing data is available for this year.$1.02$0.00$1.02$0.11
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
May 15, 2025
Return Version
2024v5.1
Compensation and Service Providers
Top Officer Pay86th percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
MERRITT C BROWNDirector-$2,000-$2,000
EDWARD A BROWNDirector-$2,000-$2,000
Filing and Contact Details

Filer

Filer Name
Marilyn Mason Foundation
EIN
38-3317749
In Care Of
% MERRITT C BROWN
Address
79 OLD SUDBURY RD, LINCOLN, MA 01773

Signing Officer

Name
Merritt C Brown
Title
Director
Phone
7346578450
Signed
2025-05-15
Discuss with paid preparer
Yes

Preparer

Firm
Pemberton Tax & Accounting
Address
2910 WHITTIER CT, Ann Arbor, MI 48104
Preparer
Susan Pemberton
Phone
7346578450
Raw XML Appendix283 raw XML fields

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/EOYBookValueAmt03812
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYBookValueAmt13278
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYBookValueAmt24295
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYBookValueAmt318871
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYFMVAmt0286981
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYFMVAmt143966
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYFMVAmt213424
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/EOYFMVAmt339792
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/StockNm01146 APPLE
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/StockNm1200 IBM
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/StockNm256 JP MORGAN
InvestmentsCorpStockSchedule/InvestmentsCorporateStockGrp/StockNm3600 MERK
IRS990PF/AnalysisIncomeProducingActyGrp/DividendsAndInterestFromSecDtl/ExclusionAmt01
IRS990PF/AnalysisIncomeProducingActyGrp/DividendsAndInterestFromSecDtl/ExclusionCd014
IRS990PF/AnalysisIncomeProducingActyGrp/SubtotalsIncmProducingActyGrp/ExclusionAmt01
IRS990PF/AnalysisIncomeProducingActyGrp/TotalIncomeProducingActyAmt01
IRS990PF/AnalysisOfRevenueAndExpenses/AdjustedNetIncomeAmt00
IRS990PF/AnalysisOfRevenueAndExpenses/CapGainNetIncmNetInvstIncmAmt028059
IRS990PF/AnalysisOfRevenueAndExpenses/CompOfcrDirTrstAdjNetIncmAmt04000
IRS990PF/AnalysisOfRevenueAndExpenses/CompOfcrDirTrstNetInvstIncmAmt04000
IRS990PF/AnalysisOfRevenueAndExpenses/CompOfcrDirTrstRevAndExpnssAmt04000
IRS990PF/AnalysisOfRevenueAndExpenses/ContriPaidDsbrsChrtblAmt014000
IRS990PF/AnalysisOfRevenueAndExpenses/ContriPaidRevAndExpnssAmt014000
IRS990PF/AnalysisOfRevenueAndExpenses/DividendsAdjNetIncmAmt04049
IRS990PF/AnalysisOfRevenueAndExpenses/DividendsNetInvstIncmAmt04049
IRS990PF/AnalysisOfRevenueAndExpenses/DividendsRevAndExpnssAmt04049
IRS990PF/AnalysisOfRevenueAndExpenses/ExcessRevenueOverExpensesAmt011155
IRS990PF/AnalysisOfRevenueAndExpenses/GrossSalesPriceAmt028471
IRS990PF/AnalysisOfRevenueAndExpenses/NetGainSaleAstRevAndExpnssAmt028059
IRS990PF/AnalysisOfRevenueAndExpenses/NetInvestmentIncomeAmt025155
IRS990PF/AnalysisOfRevenueAndExpenses/OtherExpensesAdjNetIncmAmt0170
IRS990PF/AnalysisOfRevenueAndExpenses/OtherExpensesNetInvstIncmAmt0170
IRS990PF/AnalysisOfRevenueAndExpenses/OtherExpensesRevAndExpnssAmt0170
IRS990PF/AnalysisOfRevenueAndExpenses/OtherProfFeesAdjNetIncmAmt02550
IRS990PF/AnalysisOfRevenueAndExpenses/OtherProfFeesNetInvstIncmAmt02550
IRS990PF/AnalysisOfRevenueAndExpenses/OtherProfFeesRevAndExpnssAmt02550
IRS990PF/AnalysisOfRevenueAndExpenses/ScheduleBNotRequiredInd0X
IRS990PF/AnalysisOfRevenueAndExpenses/TaxesAdjNetIncmAmt0233
IRS990PF/AnalysisOfRevenueAndExpenses/TaxesNetInvstIncmAmt0233
IRS990PF/AnalysisOfRevenueAndExpenses/TaxesRevAndExpnssAmt0233
IRS990PF/AnalysisOfRevenueAndExpenses/TotalAdjNetIncmAmt04049
IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesAdjNetIncmAmt06953
IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesDsbrsChrtblAmt014000
IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesNetInvstIncmAmt06953
IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesRevAndExpnssAmt020953
IRS990PF/AnalysisOfRevenueAndExpenses/TotalNetInvstIncmAmt032108
IRS990PF/AnalysisOfRevenueAndExpenses/TotalRevAndExpnssAmt032108
IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesAdjNetIncmAmt06953
IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesDsbrsChrtblAmt00
IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesNetInvstIncmAmt06953
IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesRevAndExpnssAmt06953
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/AcquiredDt02008-10-09
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/CostOrOtherBasisAmt0412
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/GainOrLossAmt028059
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/GainsMinusExcessOrLossesAmt028059
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/GrossSalesPriceAmt028471
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/HowAcquiredCd0P
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc0124000 SH APPLE INC
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt02024-12-16
IRS990PF/CapGainsLossTxInvstIncmDetail/CapitalGainNetIncomeAmt028059
IRS990PF/ChgInNetAssetsFundBalancesGrp/ExcessRevenueOverExpensesAmt011155
IRS990PF/ChgInNetAssetsFundBalancesGrp/SubtotalAmt048955
IRS990PF/ChgInNetAssetsFundBalancesGrp/TotNetAstOrFundBalancesBOYAmt037800
IRS990PF/ChgInNetAssetsFundBalancesGrp/TotNetAstOrFundBalancesEOYAmt048955
IRS990PF/DistributableAmountGrp/DistributableAsAdjustedAmt017420
IRS990PF/DistributableAmountGrp/DistributableBeforeAdjAmt017420
IRS990PF/DistributableAmountGrp/DistributableBeforeDedAmt017420
IRS990PF/DistributableAmountGrp/MinimumInvestmentReturnAmt017770
IRS990PF/DistributableAmountGrp/TaxBasedOnInvestmentIncomeAmt0350
IRS990PF/DistributableAmountGrp/TotalTaxAmt0350
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/InvestmentIncomeExciseTaxAmt0350
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/SubtitleATaxAmt00
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/SubtotalAmt0350
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxBasedOnInvestmentIncomeAmt0350
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxDueAmt0350
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxUnderSection511Amt00
IRS990PF/FMVAssetsEOYAmt0384163
IRS990PF/Form990PFBalanceSheetsGrp/CashBOYAmt07880
IRS990PF/Form990PFBalanceSheetsGrp/CashEOYAmt018699
IRS990PF/Form990PFBalanceSheetsGrp/CorporateStockBOYAmt029920
IRS990PF/Form990PFBalanceSheetsGrp/CorporateStockEOYAmt030256
IRS990PF/Form990PFBalanceSheetsGrp/CorporateStockEOYFMVAmt0384163
IRS990PF/Form990PFBalanceSheetsGrp/NoDonorRstrNetAssestsBOYAmt037800
IRS990PF/Form990PFBalanceSheetsGrp/NoDonorRstrNetAssestsEOYAmt048955
IRS990PF/Form990PFBalanceSheetsGrp/OrganizationFollowsFASB117Ind0X
IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsBOYAmt037800
IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsEOYAmt048955
IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsEOYFMVAmt0384163
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesBOYAmt00
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesEOYAmt00
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesNetAstBOYAmt037800
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesNetAstEOYAmt048955
IRS990PF/Form990PFBalanceSheetsGrp/TotNetAstOrFundBalancesBOYAmt037800
IRS990PF/Form990PFBalanceSheetsGrp/TotNetAstOrFundBalancesEOYAmt048955
IRS990PF/MethodOfAccountingCashInd0X
IRS990PF/MinimumInvestmentReturnGrp/AcquisitionIndebtednessAmt00
IRS990PF/MinimumInvestmentReturnGrp/AdjustedTotalFMVOfUnusedAstAmt0360804
IRS990PF/MinimumInvestmentReturnGrp/AverageMonthlyCashBalancesAmt07264
IRS990PF/MinimumInvestmentReturnGrp/AverageMonthlyFMVOfSecAmt0353540
IRS990PF/MinimumInvestmentReturnGrp/CashDeemedCharitableAmt05412
IRS990PF/MinimumInvestmentReturnGrp/FMVAllOtherNoncharitableAstAmt00
IRS990PF/MinimumInvestmentReturnGrp/MinimumInvestmentReturnAmt017770
IRS990PF/MinimumInvestmentReturnGrp/NetVlNoncharitableAssetsAmt0355392
IRS990PF/MinimumInvestmentReturnGrp/ReductionClaimedAmt00
IRS990PF/MinimumInvestmentReturnGrp/TotalFMVOfUnusedAssetsAmt0360804
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/CompOfHghstPdCntrctOrNONETxt0NONE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/CompOfHghstPdEmplOrNONETxt0NONE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/AverageHrsPerWkDevotedToPosRt01.00
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/AverageHrsPerWkDevotedToPosRt11.00
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/CompensationAmt02000
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/CompensationAmt12000
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/EmployeeBenefitProgramAmt00
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/EmployeeBenefitProgramAmt10
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/ExpenseAccountOtherAllwncAmt00
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/ExpenseAccountOtherAllwncAmt10
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm0MERRITT C BROWN
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm1EDWARD A BROWN
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt0DIRECTOR
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt1DIRECTOR
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/AddressLine1Txt079 OLD SUDBURY RD
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/AddressLine1Txt12108 SCOTTWOOD
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/CityNm0LINCOLN
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/CityNm1ANN ARBOR
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/StateAbbreviationCd0MA
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/StateAbbreviationCd1MI
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/ZIPCd001773
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/ZIPCd1481044444
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OtherEmployeePaidOver50kCnt00
IRS990PF/Organization501c3ExemptPFInd0X
IRS990PF/PFQualifyingDistributionsGrp/ExpensesAndContributionsAmt014000
IRS990PF/PFQualifyingDistributionsGrp/QualifyingDistributionsAmt014000
IRS990PF/StatementsRegardingActy4720Grp/BrrwOrLendDisqualifiedPrsnInd0false
IRS990PF/StatementsRegardingActy4720Grp/BusinessHoldingsInd0false
IRS990PF/StatementsRegardingActy4720Grp/FurnGoodsDisqualifiedPrsnInd0false
IRS990PF/StatementsRegardingActy4720Grp/GrantsToIndividualsInd0false
IRS990PF/StatementsRegardingActy4720Grp/GrantsToOrganizationsInd0false
IRS990PF/StatementsRegardingActy4720Grp/InfluenceElectionInd0false
IRS990PF/StatementsRegardingActy4720Grp/InfluenceLegislationInd0false
IRS990PF/StatementsRegardingActy4720Grp/JeopardyInvestmentsInd0false
IRS990PF/StatementsRegardingActy4720Grp/NoncharitablePurposeInd0false
IRS990PF/StatementsRegardingActy4720Grp/PayCompDisqualifiedPrsnInd0false
IRS990PF/StatementsRegardingActy4720Grp/PaymentToGovernmentOfficialInd0false
IRS990PF/StatementsRegardingActy4720Grp/PayPremiumsPrsnlBnftCntrctInd0false
IRS990PF/StatementsRegardingActy4720Grp/ProhibitedTaxShelterTransInd0false
IRS990PF/StatementsRegardingActy4720Grp/RcvFndsToPayPrsnlBnftCntrctInd0false
IRS990PF/StatementsRegardingActy4720Grp/SaleOrExchDisqualifiedPrsnInd0false
IRS990PF/StatementsRegardingActy4720Grp/SubjToTaxRmnrtnExPrchtPymtInd0false
IRS990PF/StatementsRegardingActy4720Grp/TransferAstDisqualifiedPrsnInd0false
IRS990PF/StatementsRegardingActy4720Grp/UncorrectedPriorActsInd0false
IRS990PF/StatementsRegardingActy4720Grp/UncorrectedPYJeopardyInvstInd0false
IRS990PF/StatementsRegardingActy4720Grp/UndistributedIncomePY1Yr02022
IRS990PF/StatementsRegardingActy4720Grp/UndistributedIncomePY2Yr02023
IRS990PF/StatementsRegardingActy4720Grp/UndistributedIncomePYInd0true
IRS990PF/StatementsRegardingActy4720Grp/UndistrIncmSect4942a2NotAppInd0false
IRS990PF/StatementsRegardingActyGrp/ActivitiesNotPreviouslyRptInd0false
IRS990PF/StatementsRegardingActyGrp/AtLeast5000InAssetsInd0true
IRS990PF/StatementsRegardingActyGrp/ChangesToArticlesOrBylawsInd0false
IRS990PF/StatementsRegardingActyGrp/ComplyWithPublicInspRqrInd0true
IRS990PF/StatementsRegardingActyGrp/DonorAdvisedFundInd0false
IRS990PF/StatementsRegardingActyGrp/ForeignAccountsQuestionInd0false
IRS990PF/StatementsRegardingActyGrp/Form1120POLFiledInd0false
IRS990PF/StatementsRegardingActyGrp/Form990PFFiledWithAttyGenInd0true
IRS990PF/StatementsRegardingActyGrp/IndividualWithBooksNm0MERRIT C BROWN
IRS990PF/StatementsRegardingActyGrp/LegislativePoliticalActyInd0false
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/AddressLine1Txt079 OLD SUDBURY RD
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/CityNm0LINCOLN
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/StateAbbreviationCd0MA
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/ZIPCd001773
IRS990PF/StatementsRegardingActyGrp/MoreThan100SpentInd0false
IRS990PF/StatementsRegardingActyGrp/NewSubstantialContributorsInd0false
IRS990PF/StatementsRegardingActyGrp/OrganizationDissolvedEtcInd0false
IRS990PF/StatementsRegardingActyGrp/OrgReportOrRegisterStateCd0MI
IRS990PF/StatementsRegardingActyGrp/OwnControlledEntityInd0false
IRS990PF/StatementsRegardingActyGrp/PhoneNum07346578450
IRS990PF/StatementsRegardingActyGrp/PrivateOperatingFoundationInd0false
IRS990PF/StatementsRegardingActyGrp/Section508eRqrSatisfiedInd0true
IRS990PF/StatementsRegardingActyGrp/UnrelatedBusIncmOverLimitInd0false
IRS990PF/SumOfProgramRelatedInvstGrp/TotalAmt00
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt03000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt12000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt24000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt35000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt0OPERATING FUND
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt1OPERATING FUND
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt2OPERATING FUND
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt3ALUMNI AFFAIRS & DEVELOPMENT FUND
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt0NC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt1NC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt2NC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt3NC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientPersonNm0LONGY SCHOOL OF MUSIC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientPersonNm1JUVENTAS NEW MUSIC ENSEMBLE
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientPersonNm2APOLLO ENSEMBLE OF BOSTON
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientPersonNm3HARVARD MEDICAL SCHOOL
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt027 CAMBRIDGE ST
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt1PO BOX 230015
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt21 ROANOKE AVE
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt3PO BOX 419720
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm0CAMBRIDGE
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm1BOSTON
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm2BOSTON
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm3BOSTON
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd0MA
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd1MA
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd2MA
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd3MA
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd002138
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd102123
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd202123
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd3022419720
IRS990PF/SupplementaryInformationGrp/OnlyContriToPreselectedInd0X
IRS990PF/SupplementaryInformationGrp/TotalGrantOrContriApprvFutAmt00
IRS990PF/SupplementaryInformationGrp/TotalGrantOrContriPdDurYrAmt014000
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/LoansOrLoanGuaranteesInd0false
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/PerformanceOfServicesEtcInd0false
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/PurchaseOfAssetsNonchrtblEOInd0false
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/ReimbursementArrangementsInd0false
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/RelationshipsNonchrtblEOInd0false
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/RentalOfFacilitiesOthAssetsInd0false
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/SalesOrExchangesOfAssetsInd0false
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/SharingOfFacilitiesEtcInd0false
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/TrnsfrOfCashToNonchrtblEOInd0false
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/TrnsfrOtherAssetNonchrtblEOInd0false
IRS990PF/UndistributedIncomeGrp/AppliedToCurrentYearAmt0861
IRS990PF/UndistributedIncomeGrp/AppliedToYear1Amt013139
IRS990PF/UndistributedIncomeGrp/DistributableAsAdjustedAmt017420
IRS990PF/UndistributedIncomeGrp/QualifyingDistributionsAmt014000
IRS990PF/UndistributedIncomeGrp/UndistributedIncomeCYAmt016559
IRS990PF/UndistributedIncomeGrp/UndistributedIncomePYAmt013139
OtherExpensesSchedule/OtherExpensesScheduleGrp/AdjustedNetIncomeAmt0150
OtherExpensesSchedule/OtherExpensesScheduleGrp/AdjustedNetIncomeAmt120
OtherExpensesSchedule/OtherExpensesScheduleGrp/Desc0MERRILL LYNCH FEE
OtherExpensesSchedule/OtherExpensesScheduleGrp/Desc1STATE OF MICHIGAN FEE
OtherExpensesSchedule/OtherExpensesScheduleGrp/DisbursementsCharitablePrpsAmt00
OtherExpensesSchedule/OtherExpensesScheduleGrp/DisbursementsCharitablePrpsAmt10
OtherExpensesSchedule/OtherExpensesScheduleGrp/NetInvestmentIncomeAmt0150
OtherExpensesSchedule/OtherExpensesScheduleGrp/NetInvestmentIncomeAmt120
OtherExpensesSchedule/OtherExpensesScheduleGrp/RevenueAndExpensesPerBooksAmt0150
OtherExpensesSchedule/OtherExpensesScheduleGrp/RevenueAndExpensesPerBooksAmt120
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/AdjustedNetIncomeAmt01800
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/AdjustedNetIncomeAmt1750
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/Amt01800
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/Amt1750
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/CategoryTxt0INTERNET COMPANY WEBSITE
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/CategoryTxt1TAX PREPARATION
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/DisbursementsCharitablePrpsAmt00
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/DisbursementsCharitablePrpsAmt10
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/NetInvestmentIncomeAmt01800
OtherProfessionalFeesSchedule/OtherProfessionalFeesDetail/NetInvestmentIncomeAmt1750
TaxesSchedule/TaxesDetail/AdjustedNetIncomeAmt0233
TaxesSchedule/TaxesDetail/Amt0233
TaxesSchedule/TaxesDetail/CategoryTxt0EXCISE TAX
TaxesSchedule/TaxesDetail/DisbursementsCharitablePrpsAmt00
TaxesSchedule/TaxesDetail/NetInvestmentIncomeAmt0233
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd0true
ReturnHeader/BusinessOfficerGrp/PersonNm0MERRITT C BROWN
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0DIRECTOR
ReturnHeader/BusinessOfficerGrp/PhoneNum07346578450
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-05-15
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0MARILYN MASON FOUNDATION
ReturnHeader/Filer/BusinessNameControlTxt0MARI
ReturnHeader/Filer/EIN0383317749
ReturnHeader/Filer/InCareOfNm0% MERRITT C BROWN
ReturnHeader/Filer/USAddress/AddressLine1Txt079 OLD SUDBURY RD
ReturnHeader/Filer/USAddress/CityNm0LINCOLN
ReturnHeader/Filer/USAddress/StateAbbreviationCd0MA
ReturnHeader/Filer/USAddress/ZIPCd001773
ReturnHeader/IRSResponsiblePrtyInfoCurrInd0true
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0992150087
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0PEMBERTON TAX & ACCOUNTING
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt02910 WHITTIER CT
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0Ann Arbor
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0MI
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd048104
ReturnHeader/PreparerPersonGrp/PhoneNum07346578450
ReturnHeader/PreparerPersonGrp/PreparationDt02025-05-16
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0SUSAN PEMBERTON
ReturnHeader/ReturnTs02025-05-16T23:33:36-04:00
ReturnHeader/ReturnTypeCd0990PF
ReturnHeader/TaxPeriodBeginDt02024-01-01
ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

Document Assets

No mirrored PDF or thumbnail assets are attached yet.