A & C De Coster Foundation

990PF • Fiscal year 2025 • EIN 86-2043687

Feb 01, 2024 to Jan 31, 2025 • Filed on May 15, 2025

Organization Profile

38 Woodside DriveGreenwich, CT 06830

(203) 869-1200

Siviq Scores

Precomputed percentiles for this filing year versus similar nonprofits in the same peer cohort.

0.00x

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

2025 filings • $5M-$10M nonprofits • Source year 2025

0.00x

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

2025 filings • $5M-$10M nonprofits • Source year 2025

-2.1%

Higher net margin than 28% of similar nonprofits.

2025 filings • $5M-$10M nonprofits • Source year 2025

$1,023

Higher top officer pay than 27% of similar nonprofits.

Top officer pay equals 0.2% of source-year revenue.

2025 filings • $5M-$10M nonprofits • Source year 2025

-0.1%

Faster asset growth than 32% of similar nonprofits.

2025 filings • $5M-$10M nonprofits • Annualized from 2024 to 2025

12%

Faster revenue growth than 61% of similar nonprofits.

2025 filings • $5M-$10M nonprofits • Annualized from 2024 to 2025

Balance Sheet

Liabilities / Assets18th percentile

Assets

Down

$8,912,759

Down $9,076 (-0.1%) from 2024

Net Assets

Down

$8,912,759

Down $9,076 (-0.1%) from 2024

Liabilities

Down

Down $1 (-100%) from 2024

Revenue And Expenses

Liabilities / Revenue18th percentile Net Margin28th percentile

Revenue

$440,968

Up $45,553 (+12%) from 2024

Expenses

$450,044

Up $9,508 (+2.2%) from 2024

Net Income

-$9,076

Up $36,045 (+80%) from 2024

Historical Trend

Balance Sheet Trend

Asset Growth32nd percentile

The highlighted filing sits inside the broader history for assets, liabilities, and net assets.

Highlighted filing

2025

Assets$8,912,759

Liabilities$0

Net Assets$8,912,759

Open 2025 Filing

Operations Trend

Revenue Growth61st percentile

Revenue, expenses, and net income across loaded years, with this filing highlighted.

Highlighted filing

2025

Revenue$440,968

Expenses$450,044

Net Income-$9,076

Open 2025 Filing

Jump To

Filing Snapshot

Filing Period: Feb 1, 2024 to Jan 31, 2025
Signed: May 15, 2025
Return Version: 2024v5.1

Compensation and Service Providers

Top Officer Pay27th percentile

Employees

Name	Title	Full / Part Time	Base	Other	Total
Alain De Coster	Trustee	PT	$0	$1,023	$1,023
Catherine De Coster	Trustee	PT	$0	-	-

Filing and Contact Details

Filer

Filer Name: A & C De Coster Foundation
EIN: 86-2043687
Phone: 2038691200
Address: 38 Woodside Drive, Greenwich, CT 06830

Signing Officer

Name: Alain De Coster
Title: Trustee
Phone: 2038691200
Signed: 2025-05-15
Discuss with paid preparer: Yes

Preparer

Firm: Cummings & Lockwood LLC
Address: PO Box 2505, Greenwich, CT 06836
Preparer: Albert C Rua
Phone: 2038691200

Raw XML Appendix341 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
InvestmentsCorpBondsSchedule/InvestmentsCorporateBondsGrp/BondNm	0	JPMorgan Chase Time Deposit
InvestmentsCorpBondsSchedule/InvestmentsCorporateBondsGrp/EOYBookValueAmt	0	5358549
InvestmentsCorpBondsSchedule/InvestmentsCorporateBondsGrp/EOYFMVAmt	0	5358549
InvestmentsOtherSchedule2/InvestmentsOtherGrp/BookValueAmt	0	1000000
InvestmentsOtherSchedule2/InvestmentsOtherGrp/BookValueAmt	1	1116734
InvestmentsOtherSchedule2/InvestmentsOtherGrp/BookValueAmt	2	1400000
InvestmentsOtherSchedule2/InvestmentsOtherGrp/CategoryOrItemTxt	0	Discovery Global Opp Fund Ltd
InvestmentsOtherSchedule2/InvestmentsOtherGrp/CategoryOrItemTxt	1	Fine Troy Ounces Gold
InvestmentsOtherSchedule2/InvestmentsOtherGrp/CategoryOrItemTxt	2	Colchis RBLF LTD
InvestmentsOtherSchedule2/InvestmentsOtherGrp/EOYFMVAmt	0	1657633
InvestmentsOtherSchedule2/InvestmentsOtherGrp/EOYFMVAmt	1	1187785
InvestmentsOtherSchedule2/InvestmentsOtherGrp/EOYFMVAmt	2	1400000
InvestmentsOtherSchedule2/InvestmentsOtherGrp/ListedAtCostOrFMVCd	0	AT COST
InvestmentsOtherSchedule2/InvestmentsOtherGrp/ListedAtCostOrFMVCd	1	AT COST
InvestmentsOtherSchedule2/InvestmentsOtherGrp/ListedAtCostOrFMVCd	2	AT COST
IRS990PF/AnalysisIncomeProducingActyGrp/DividendsAndInterestFromSecDtl/ExclusionAmt	0	440968
IRS990PF/AnalysisIncomeProducingActyGrp/DividendsAndInterestFromSecDtl/ExclusionCd	0	14
IRS990PF/AnalysisIncomeProducingActyGrp/SubtotalsIncmProducingActyGrp/ExclusionAmt	0	440968
IRS990PF/AnalysisIncomeProducingActyGrp/SubtotalsIncmProducingActyGrp/RelatedOrExemptFunctionIncmAmt	0	0
IRS990PF/AnalysisIncomeProducingActyGrp/SubtotalsIncmProducingActyGrp/UnrelatedBusinessTaxblIncmAmt	0	0
IRS990PF/AnalysisIncomeProducingActyGrp/TotalIncomeProducingActyAmt	0	440968
IRS990PF/AnalysisOfRevenueAndExpenses/CapGainNetIncmNetInvstIncmAmt	0	0
IRS990PF/AnalysisOfRevenueAndExpenses/CompOfcrDirTrstDsbrsChrtblAmt	0	0
IRS990PF/AnalysisOfRevenueAndExpenses/CompOfcrDirTrstNetInvstIncmAmt	0	0
IRS990PF/AnalysisOfRevenueAndExpenses/CompOfcrDirTrstRevAndExpnssAmt	0	0
IRS990PF/AnalysisOfRevenueAndExpenses/ContriPaidDsbrsChrtblAmt	0	435000
IRS990PF/AnalysisOfRevenueAndExpenses/ContriPaidRevAndExpnssAmt	0	435000
IRS990PF/AnalysisOfRevenueAndExpenses/DividendsNetInvstIncmAmt	0	434947
IRS990PF/AnalysisOfRevenueAndExpenses/DividendsRevAndExpnssAmt	0	440968
IRS990PF/AnalysisOfRevenueAndExpenses/ExcessRevenueOverExpensesAmt	0	-9076
IRS990PF/AnalysisOfRevenueAndExpenses/LegalFeesDsbrsChrtblAmt	0	0
IRS990PF/AnalysisOfRevenueAndExpenses/LegalFeesNetInvstIncmAmt	0	3000
IRS990PF/AnalysisOfRevenueAndExpenses/LegalFeesRevAndExpnssAmt	0	3000
IRS990PF/AnalysisOfRevenueAndExpenses/NetInvestmentIncomeAmt	0	431947
IRS990PF/AnalysisOfRevenueAndExpenses/ScheduleBNotRequiredInd	0	X
IRS990PF/AnalysisOfRevenueAndExpenses/TaxesDsbrsChrtblAmt	0	0
IRS990PF/AnalysisOfRevenueAndExpenses/TaxesNetInvstIncmAmt	0	0
IRS990PF/AnalysisOfRevenueAndExpenses/TaxesRevAndExpnssAmt	0	11021
IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesDsbrsChrtblAmt	0	436023
IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesNetInvstIncmAmt	0	3000
IRS990PF/AnalysisOfRevenueAndExpenses/TotalExpensesRevAndExpnssAmt	0	450044
IRS990PF/AnalysisOfRevenueAndExpenses/TotalNetInvstIncmAmt	0	434947
IRS990PF/AnalysisOfRevenueAndExpenses/TotalRevAndExpnssAmt	0	440968
IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesDsbrsChrtblAmt	0	1023
IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesNetInvstIncmAmt	0	3000
IRS990PF/AnalysisOfRevenueAndExpenses/TotOprExpensesRevAndExpnssAmt	0	15044
IRS990PF/AnalysisOfRevenueAndExpenses/TravConfMeetingDsbrsChrtblAmt	0	1023
IRS990PF/AnalysisOfRevenueAndExpenses/TravConfMeetingNetInvstIncmAmt	0	0
IRS990PF/AnalysisOfRevenueAndExpenses/TravConfMeetingRevAndExpnssAmt	0	1023
IRS990PF/ChgInNetAssetsFundBalancesGrp/ExcessRevenueOverExpensesAmt	0	-9076
IRS990PF/ChgInNetAssetsFundBalancesGrp/OtherDecreasesAmt	0	0
IRS990PF/ChgInNetAssetsFundBalancesGrp/OtherIncreasesAmt	0	0
IRS990PF/ChgInNetAssetsFundBalancesGrp/SubtotalAmt	0	8912759
IRS990PF/ChgInNetAssetsFundBalancesGrp/TotNetAstOrFundBalancesBOYAmt	0	8921835
IRS990PF/ChgInNetAssetsFundBalancesGrp/TotNetAstOrFundBalancesEOYAmt	0	8912759
IRS990PF/DistributableAmountGrp/DeductionFromDistributableAmt	0	0
IRS990PF/DistributableAmountGrp/DistributableAsAdjustedAmt	0	455565
IRS990PF/DistributableAmountGrp/DistributableBeforeAdjAmt	0	455565
IRS990PF/DistributableAmountGrp/DistributableBeforeDedAmt	0	455565
IRS990PF/DistributableAmountGrp/MinimumInvestmentReturnAmt	0	461569
IRS990PF/DistributableAmountGrp/RecoveriesQualfiedDistriAmt	0	0
IRS990PF/DistributableAmountGrp/TaxBasedOnInvestmentIncomeAmt	0	6004
IRS990PF/DistributableAmountGrp/TotalTaxAmt	0	6004
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/BackupWithholdingWithheldAmt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/EsPenaltyAmt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/EstimatedPlusOvpmtIncmTxAmt	0	5480
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/ExemptFrgnOrgTaxWthldAtSrceAmt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/ExtsnRequestIncomeTaxPaidAmt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/InvestmentIncomeExciseTaxAmt	0	6004
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/SubtitleATaxAmt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/SubtotalAmt	0	6004
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxBasedOnInvestmentIncomeAmt	0	6004
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxDueAmt	0	524
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxUnderSection511Amt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TotalPaymentsAndCreditsAmt	0	5480
IRS990PF/FMVAssetsEOYAmt	0	9641443
IRS990PF/Form990PFBalanceSheetsGrp/AdditionalPaidInCapitalBOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/AdditionalPaidInCapitalEOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/CapitalStockBOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/CapitalStockEOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/CashBOYAmt	0	-2140641
IRS990PF/Form990PFBalanceSheetsGrp/CashEOYAmt	0	37476
IRS990PF/Form990PFBalanceSheetsGrp/CashEOYFMVAmt	0	37476
IRS990PF/Form990PFBalanceSheetsGrp/CorporateBondsBOYAmt	0	10062476
IRS990PF/Form990PFBalanceSheetsGrp/CorporateBondsEOYAmt	0	5358549
IRS990PF/Form990PFBalanceSheetsGrp/CorporateBondsEOYFMVAmt	0	5358549
IRS990PF/Form990PFBalanceSheetsGrp/OrgDoesNotFollowFASB117Ind	0	X
IRS990PF/Form990PFBalanceSheetsGrp/OtherInvestmentsBOYAmt	0	1000000
IRS990PF/Form990PFBalanceSheetsGrp/OtherInvestmentsEOYAmt	0	3516734
IRS990PF/Form990PFBalanceSheetsGrp/OtherInvestmentsEOYFMVAmt	0	4245418
IRS990PF/Form990PFBalanceSheetsGrp/RetainedEarningBOYAmt	0	8921835
IRS990PF/Form990PFBalanceSheetsGrp/RetainedEarningEOYAmt	0	8912759
IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsBOYAmt	0	8921835
IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsEOYAmt	0	8912759
IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsEOYFMVAmt	0	9641443
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesBOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesEOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesNetAstBOYAmt	0	8921835
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesNetAstEOYAmt	0	8912759
IRS990PF/Form990PFBalanceSheetsGrp/TotNetAstOrFundBalancesBOYAmt	0	8921835
IRS990PF/Form990PFBalanceSheetsGrp/TotNetAstOrFundBalancesEOYAmt	0	8912759
IRS990PF/MethodOfAccountingCashInd	0	X
IRS990PF/MinimumInvestmentReturnGrp/AcquisitionIndebtednessAmt	0	0
IRS990PF/MinimumInvestmentReturnGrp/AdjustedTotalFMVOfUnusedAstAmt	0	9371969
IRS990PF/MinimumInvestmentReturnGrp/AverageMonthlyCashBalancesAmt	0	22907
IRS990PF/MinimumInvestmentReturnGrp/AverageMonthlyFMVOfSecAmt	0	7956055
IRS990PF/MinimumInvestmentReturnGrp/CashDeemedCharitableAmt	0	140580
IRS990PF/MinimumInvestmentReturnGrp/FMVAllOtherNoncharitableAstAmt	0	1393007
IRS990PF/MinimumInvestmentReturnGrp/MinimumInvestmentReturnAmt	0	461569
IRS990PF/MinimumInvestmentReturnGrp/NetVlNoncharitableAssetsAmt	0	9231389
IRS990PF/MinimumInvestmentReturnGrp/ReductionClaimedAmt	0	0
IRS990PF/MinimumInvestmentReturnGrp/TotalFMVOfUnusedAssetsAmt	0	9371969
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/CompOfHghstPdCntrctOrNONETxt	0	NONE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/CompOfHghstPdEmplOrNONETxt	0	NONE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/ContractorPaidOver50kCnt	0	0
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/AverageHrsPerWkDevotedToPosRt	0	10.00
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/AverageHrsPerWkDevotedToPosRt	1	10.00
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	1023
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/ExpenseAccountOtherAllwncAmt	1	0
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm	0	Alain De Coster
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm	1	Catherine De Coster
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt	0	Trustee
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt	1	Trustee
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/AddressLine1Txt	0	38 Woodside Drive
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/AddressLine1Txt	1	38 Woodside Drive
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/CityNm	0	Greenwich
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/CityNm	1	Greenwich
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/StateAbbreviationCd	0	CT
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/StateAbbreviationCd	1	CT
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/ZIPCd	0	06830
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/ZIPCd	1	06830
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OtherEmployeePaidOver50kCnt	0	0
IRS990PF/Organization501c3ExemptPFInd	0	X
IRS990PF/PFQualifyingDistributionsGrp/ExpensesAndContributionsAmt	0	436023
IRS990PF/PFQualifyingDistributionsGrp/ProgramRelatedInvstTotalAmt	0	0
IRS990PF/PFQualifyingDistributionsGrp/QualifyingDistributionsAmt	0	436023
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	0
IRS990PF/StatementsRegardingActyGrp/DonorAdvisedFundInd	0	0
IRS990PF/StatementsRegardingActyGrp/ForeignAccountsQuestionInd	0	0
IRS990PF/StatementsRegardingActyGrp/Form1120POLFiledInd	0	0
IRS990PF/StatementsRegardingActyGrp/Form990PFFiledWithAttyGenInd	0	1
IRS990PF/StatementsRegardingActyGrp/IndividualWithBooksNm	0	Alain De Coster
IRS990PF/StatementsRegardingActyGrp/LegislativePoliticalActyInd	0	0
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/AddressLine1Txt	0	38 Woodside Drive
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/CityNm	0	Greenwich
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/StateAbbreviationCd	0	CT
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/ZIPCd	0	06830
IRS990PF/StatementsRegardingActyGrp/MoreThan100SpentInd	0	0
IRS990PF/StatementsRegardingActyGrp/NewSubstantialContributorsInd	0	0
IRS990PF/StatementsRegardingActyGrp/OrganizationDissolvedEtcInd	0	0
IRS990PF/StatementsRegardingActyGrp/OrgReportOrRegisterStateCd	0	CT
IRS990PF/StatementsRegardingActyGrp/OwnControlledEntityInd	0	0
IRS990PF/StatementsRegardingActyGrp/PhoneNum	0	2038691200
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/ContributingManagerNm	0	Alain De Coster
IRS990PF/SupplementaryInformationGrp/ContributingManagerNm	1	Catherine De Coster
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	0	20000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	1	80000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	2	150000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	3	50000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	4	25000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	5	25000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	6	50000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	7	25000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	8	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	0	General Fund
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	1	General Fund
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	2	General FundGeneral Fund
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	3	General Fund
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	4	General Fund
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	5	General Fund
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	6	General Fund
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	7	General Fund
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	8	General Fund
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	0	Greenwich Boy Scout of America
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	1	Back Country Jazz
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	2	Brooklyn Jesuit Prep
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	3	Circle of Care
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	4	Kids in Crisis
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	5	Habitat For Humanity of Coastal Fairfield County
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	6	Myriad USA (King Boudouin Foundation)
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	7	Neighbor to Neighbor
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	8	At Home in Greenwich
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt	0	PC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt	1	PC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt	2	PC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt	3	PC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt	4	PC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt	5	PC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt	6	PC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt	7	PC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientFoundationStatusTxt	8	PC
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt	0	None
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt	1	None
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt	2	None
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt	3	None
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt	4	None
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt	5	None
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt	6	None
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt	7	None
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientRelationshipTxt	8	None
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt	0	63 Mason Street
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt	1	15 East Putnam Avenue
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt	2	925 East 37th Street
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt	3	144 Danbury Road
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt	4	1 Salem Street
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt	5	1785 Stratford Avenue
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt	6	551 5th Ave Suite 2400
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt	7	248 E Putnam Ave
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/AddressLine1Txt	8	139 E Putnam Ave Suite 220
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm	0	Greenwich
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm	1	Greenwich
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm	2	Broooklyn
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm	3	Wilton
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm	4	Cos Cob
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm	5	Stratford
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm	6	New York
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm	7	Greenwich
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/CityNm	8	Greenwich
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd	0	CT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd	1	CT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd	2	NY
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd	3	CT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd	4	CT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd	5	CT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd	6	NY
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd	7	CT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/StateAbbreviationCd	8	CT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd	0	06830
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd	1	06830
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd	2	11210
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd	3	06897
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd	4	06807
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd	5	06615
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd	6	10176
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd	7	06830
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientUSAddress/ZIPCd	8	06830
IRS990PF/SupplementaryInformationGrp/OnlyContriToPreselectedInd	0	X
IRS990PF/SupplementaryInformationGrp/TotalGrantOrContriApprvFutAmt	0	0
IRS990PF/SupplementaryInformationGrp/TotalGrantOrContriPdDurYrAmt	0	435000
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	1751
IRS990PF/UndistributedIncomeGrp/AppliedToPriorYearsAmt	0	0
IRS990PF/UndistributedIncomeGrp/AppliedToYear1Amt	0	434272
IRS990PF/UndistributedIncomeGrp/CorpusDistri170b1EOr4942g3Amt	0	0
IRS990PF/UndistributedIncomeGrp/DistributableAsAdjustedAmt	0	455565
IRS990PF/UndistributedIncomeGrp/ExcessDistributionCyovAppCYAmt	0	0
IRS990PF/UndistributedIncomeGrp/ExcessDistriCyovAppCYCorpusAmt	0	0
IRS990PF/UndistributedIncomeGrp/ExcessDistriCyovFromYr5Amt	0	0
IRS990PF/UndistributedIncomeGrp/ExcessDistriCyovToNextYrAmt	0	0
IRS990PF/UndistributedIncomeGrp/PriorYearDeficiencyOrTaxAmt	0	0
IRS990PF/UndistributedIncomeGrp/PriorYearUndistributedIncmAmt	0	0
IRS990PF/UndistributedIncomeGrp/QualifyingDistributionsAmt	0	436023
IRS990PF/UndistributedIncomeGrp/RemainingDistriFromCorpusAmt	0	0
IRS990PF/UndistributedIncomeGrp/Taxable1Amt	0	0
IRS990PF/UndistributedIncomeGrp/Taxable2Amt	0	0
IRS990PF/UndistributedIncomeGrp/TotalCorpusAmt	0	0
IRS990PF/UndistributedIncomeGrp/TotalExcessDistributionCyovAmt	0	0
IRS990PF/UndistributedIncomeGrp/TotalForPriorYearsAmt	0	0
IRS990PF/UndistributedIncomeGrp/TreatedAsDistriFromCorpusAmt	0	0
IRS990PF/UndistributedIncomeGrp/UndistributedIncomeCYAmt	0	453814
IRS990PF/UndistributedIncomeGrp/UndistributedIncomePYAmt	0	434272
LegalFeesSchedule/LegalFeesGrp/CategoryTxt	0	Cummings & Lockwood
LegalFeesSchedule/LegalFeesGrp/DisbursementsCharitablePrpsAmt	0	0
LegalFeesSchedule/LegalFeesGrp/LegalFeesAmt	0	3000
LegalFeesSchedule/LegalFeesGrp/NetInvestmentIncomeAmt	0	3000
TaxesSchedule/TaxesDetail/Amt	0	11021
TaxesSchedule/TaxesDetail/CategoryTxt	0	US Treasury - Excise Tax
TaxesSchedule/TaxesDetail/DisbursementsCharitablePrpsAmt	0	0
TaxesSchedule/TaxesDetail/NetInvestmentIncomeAmt	0	0
ReturnHeader/BuildTS	0	2025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd	0	1
ReturnHeader/BusinessOfficerGrp/PersonNm	0	Alain De Coster
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt	0	Trustee
ReturnHeader/BusinessOfficerGrp/PhoneNum	0	2038691200
ReturnHeader/BusinessOfficerGrp/SignatureDt	0	2025-05-15
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt	0	A & C De Coster Foundation
ReturnHeader/Filer/BusinessNameControlTxt	0	A&CD
ReturnHeader/Filer/EIN	0	862043687
ReturnHeader/Filer/PhoneNum	0	2038691200
ReturnHeader/Filer/USAddress/AddressLine1Txt	0	38 Woodside Drive
ReturnHeader/Filer/USAddress/CityNm	0	Greenwich
ReturnHeader/Filer/USAddress/StateAbbreviationCd	0	CT
ReturnHeader/Filer/USAddress/ZIPCd	0	06830
ReturnHeader/IRSResponsiblePrtyInfoCurrInd	0	0
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN	0	060312590
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt	0	Cummings & Lockwood LLC
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt	0	PO Box 2505
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm	0	Greenwich
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd	0	CT
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd	0	06836
ReturnHeader/PreparerPersonGrp/PhoneNum	0	2038691200
ReturnHeader/PreparerPersonGrp/PreparerPersonNm	0	Albert C Rua
ReturnHeader/ReturnTs	0	2025-06-12T08:02:03-05:00
ReturnHeader/ReturnTypeCd	0	990PF
ReturnHeader/TaxPeriodBeginDt	0	2024-02-01
ReturnHeader/TaxPeriodEndDt	0	2025-01-31
ReturnHeader/TaxYr	0	2024

Document Assets

No mirrored PDF or thumbnail assets are attached yet.

Filings

Displayed year

2025 • Form 990PFDetailed filing. Detailed filing data is available for this year.

Open filing

Assets: $8,912,759
Liabilities: $0
Net assets: $8,912,759
Revenue: $440,968
Expenses: $450,044
Net income: -$9,076

	Balance Sheet			Operations
Year	Assets	Liabilities	Net Assets	Revenue	Expenses	Net Income
2025Detailed filing. Detailed filing data is available for this year.	$8.91	$0.00	$8.91	$0.44	$0.45	$0.01
2024Detailed filing. Detailed filing data is available for this year.	$8.92	$0.00	$8.92	$0.40	$0.44	$0.05
2023Detailed filing. Detailed filing data is available for this year.	$8.97	$0.00	$8.97	$0.25	$0.32	$0.57
2022Detailed filing. Detailed filing data is available for this year.	$9.54	$0.00	$9.54	$9.55	$0.01	$9.54