FURP.ORG / PUBLIC DATA EXPLORER

FRIENDS OF PRINCETON OPEN SPACE: Form 990, tax year 2024

View the entire original 990 at ProPublica ↗

Organization
FRIENDS OF PRINCETON OPEN SPACE (EIN 23-7259355)
Tax period
2024-07-01 to 2025-06-30
Filed
2026-05-04
IRS object ID
202641249349301144
Schema version
2024v5.0
Source
Download XML · Original 990 at ProPublica

Every field in the e-filed return. Faint text is the IRS element name, for citing.

Return header ReturnHeader

FieldValueIRS element (for citing)
Return2026-05-04T15:33:08-04:00ReturnTs
Tax Period End2025-06-30TaxPeriodEndDt

Preparer Firm PreparerFirmGrp

FieldValueIRS element (for citing)
Preparer Firm EIN814693463PreparerFirmEIN

Preparer Firm Name PreparerFirmName

FieldValueIRS element (for citing)
Business Name Line1HAMILTON MERCER ADVISORSBusinessNameLine1Txt

Preparer US Address PreparerUSAddress

FieldValueIRS element (for citing)
Address Line11540 KUSER ROAD SUITE A4AddressLine1Txt
CityMERCERVILLECityNm
State AbbreviationNJStateAbbreviationCd
ZIP086193828ZIPCd
FieldValueIRS element (for citing)
Return Type990ReturnTypeCd
Tax Period Begin2024-07-01TaxPeriodBeginDt

Filer Filer

FieldValueIRS element (for citing)
EIN237259355EIN

Business Name BusinessName

FieldValueIRS element (for citing)
Business Name Line1FRIENDS OF PRINCETON OPEN SPACEBusinessNameLine1Txt
FieldValueIRS element (for citing)
Business Name ControlFRIEBusinessNameControlTxt
Phone6099212772PhoneNum

US Address USAddress

FieldValueIRS element (for citing)
Address Line157 MOUNTAIN AVENUEAddressLine1Txt
CityPRINCETONCityNm
State AbbreviationNJStateAbbreviationCd
ZIP08540ZIPCd

Business Officer BusinessOfficerGrp

FieldValueIRS element (for citing)
PersonWENDY L MAGERPersonNm
Person TitlePRESIDENTPersonTitleTxt
Phone6099212772PhoneNum
Signature2026-04-30SignatureDt
Discuss With Paid PreparerYes (true)DiscussWithPaidPreparerInd
FieldValueIRS element (for citing)
IRS Responsible Prty Info CurrYes (true)IRSResponsiblePrtyInfoCurrInd

Preparer Person PreparerPersonGrp

FieldValueIRS element (for citing)
Preparer PersonPETER S MARTIN CPAPreparerPersonNm
PTINP00360267PTIN
Phone6095810300PhoneNum
Preparation2026-05-04PreparationDt
FieldValueIRS element (for citing)
Tax2024TaxYr
Build TS2025-03-06 01:10:19ZBuildTS

Form 990 IRS990

FieldValueIRS element (for citing)
Principal OfficerWENDY L MAGERPrincipalOfficerNm

US Address USAddress

FieldValueIRS element (for citing)
Address Line157 MOUNTAIN AVENUEAddressLine1Txt
CityPRINCETONCityNm
State AbbreviationNJStateAbbreviationCd
ZIP08540ZIPCd
FieldValueIRS element (for citing)
Gross Receipts$352,331GrossReceiptsAmt
Group Return For AffiliatesfalseGroupReturnForAffiliatesInd
Organization501c3Yes (X)Organization501c3Ind
Website AddressWWW.FOPOS.ORGWebsiteAddressTxt
Type Of Organization CorpYes (X)TypeOfOrganizationCorpInd
Formation1969FormationYr
Legal Domicile StateNJLegalDomicileStateCd
Activity Or MissionIN PRINCETON: ACQUIRING OPEN SPACE FOR PRESERVATION, PROTECTING NATURAL RESOURCES, MAINTAINING ACCESSIBILITY TO TRAILS AND PROVIDING ENVIRONMENTAL EDUCATION. IN THE PRINCETON REGION: WORKING WITH GROUPS TO SUPPORT EFFORTS TO PRESERVE AND PROTECT OPEN SPACE AND THE ENVIRONMENT.ActivityOrMissionDesc
Voting Members Governing Body21VotingMembersGoverningBodyCnt
Voting Members Independent21VotingMembersIndependentCnt
Total Employee7TotalEmployeeCnt
Total Volunteers900TotalVolunteersCnt
Total Gross UBI$0TotalGrossUBIAmt
PY Contributions Grants$277,261PYContributionsGrantsAmt
CY Contributions Grants$293,767CYContributionsGrantsAmt
CY Program Service Revenue$0CYProgramServiceRevenueAmt
PY Investment Income$2,272PYInvestmentIncomeAmt
CY Investment Income$2,390CYInvestmentIncomeAmt
CY Other Revenue$0CYOtherRevenueAmt
PY Total Revenue$279,533PYTotalRevenueAmt
CY Total Revenue$296,157CYTotalRevenueAmt
CY Grants And Similar Paid$0CYGrantsAndSimilarPaidAmt
CY Benefits Paid To Members$0CYBenefitsPaidToMembersAmt
PY Salaries Comp Emp Bnft Paid$117,337PYSalariesCompEmpBnftPaidAmt
CY Salaries Comp Emp Bnft Paid$164,461CYSalariesCompEmpBnftPaidAmt
CY Total Prof Fndrsng Expns$0CYTotalProfFndrsngExpnsAmt
CY Total Fundraising Expense$0CYTotalFundraisingExpenseAmt
PY Other Expenses$85,015PYOtherExpensesAmt
CY Other Expenses$149,073CYOtherExpensesAmt
PY Total Expenses$202,352PYTotalExpensesAmt
CY Total Expenses$313,534CYTotalExpensesAmt
PY Revenues Less Expenses$77,181PYRevenuesLessExpensesAmt
CY Revenues Less Expenses-$17,377CYRevenuesLessExpensesAmt
Total Assets BOY$3,788,945TotalAssetsBOYAmt
Total Assets EOY$3,789,204TotalAssetsEOYAmt
Total Liabilities BOY$35,441TotalLiabilitiesBOYAmt
Total Liabilities EOY$52,944TotalLiabilitiesEOYAmt
Net Assets Or Fund Balances BOY$3,753,504NetAssetsOrFundBalancesBOYAmt
Net Assets Or Fund Balances EOY$3,736,260NetAssetsOrFundBalancesEOYAmt
Info In Schedule O Part IIIYes (X)InfoInScheduleOPartIIIInd
MissionIN PRINCETON: ACQUIRING OPEN SPACE FOR PRESERVATION, PROTECTING NATURAL RESOURCES, MAINTAINING ACCESSIBILITY TO TRAILS AND PROVIDING ENVIRONMENTAL EDUCATION. IN THE PRINCETON REGION: WORKING WITH GROUPS TO SUPPORT EFFORTS TO PRESERVE AND PROTECT OPEN SPACE AND THE ENVIRONMENT.MissionDesc
Significant New Program SrvcfalseSignificantNewProgramSrvcInd
Significant ChangefalseSignificantChangeInd
Expense$147,921ExpenseAmt
DescFRIENDS OF PRINCETON OPEN SPACE PROTECTS NATURAL RESOURCES BY PRESERVING LAND AND MANAGING THE BILLY JOHNSON MOUNTAIN LAKES NATURE PRESERVE, ON WHICH IT HOLDS THE CONSERVATION EASEMENTS. INVASIVE PLANTS ARE REMOVED AND ECOLOGICAL RESTORATION PROJECTS ARE CONDUCTED; NATIVE PLANTS ARE GROWN, PLANTED AND MAINTAINED BY OR UNDER THE SUPERVISION OF THE DIRECTOR, NATURAL RESOURCES AND STEWARDSHIP.Desc

Prog Srvc Accom Acty2 ProgSrvcAccomActy2Grp

FieldValueIRS element (for citing)
Expense$15,929ExpenseAmt
DescFRIENDS OF PRINCETON OPEN SPACE BOARD MEMBERS AND VOLUNTEERS HAVE MAINTAINED OVER 8 MILES OF TRAILS IN MOUNTAIN LAKES OPEN SPACE AREA AND HAVE RESTORED AND MAINTAINED TRAILS THROUGHOUT THE MUNICIPALITY. SIGNIFICANT WORK IS COMPLETED TO CLEAR TRAILS OF SEASONAL OVERGROWTH. FOPOS HAS ADDED STONE STEPS, FOOTBRIDGES AND BOARDWALKS TO VARIOUS TRAILS TO MAKE THEM MORE ACCESSIBLE.Desc

Prog Srvc Accom Acty3 ProgSrvcAccomActy3Grp

FieldValueIRS element (for citing)
Expense$91,042ExpenseAmt
DescFRIENDS OF PRINCETON OPEN SPACE HAS PRESENTED EDUCATIONAL EVENTS AND SPEAKERS AT THE BILLY JOHNSON MOUNTAIN LAKES NATURE PRESERVE AND ELSEWHERE IN THE COMMUNITY ON TOPICS SUCH AS GARDENING WITH NATIVE SPECIES, INVASIVE SPECIES, AND THE FLORA AND FAUNA OF THE GREATER MOUNTAIN LAKES OPEN SPACE AREA. FOPOS HAS ALSO CO-SPONSORED EVENTS SUCH AS GUIDED TRAIL WALKS WITH OTHER ENVIRONMENTAL/EDUCATIONAL GROUPS. THE BOARD AND OTHER MEMBERS CONTRIBUTED TOWARDS SUPPORT FOR STAFFING AND EXPENSES.Desc
FieldValueIRS element (for citing)
Total Program Service Expenses$254,892TotalProgramServiceExpensesAmt
Described In Section501c3Yes (true)DescribedInSection501c3Ind
Schedule B RequiredYes (true)ScheduleBRequiredInd
Political Campaign ActyfalsePoliticalCampaignActyInd
Lobbying ActivitiesfalseLobbyingActivitiesInd
Subject To Proxy TaxfalseSubjectToProxyTaxInd
Donor Advised FundfalseDonorAdvisedFundInd
Conservation EasementsYes (true)ConservationEasementsInd
Collections Of ArtfalseCollectionsOfArtInd
Credit CounselingfalseCreditCounselingInd
Donor Rstr Or Quasi EndowmentsYes (true)DonorRstrOrQuasiEndowmentsInd
Report Land Building EquipmentYes (true)ReportLandBuildingEquipmentInd
Report Investments Other SecfalseReportInvestmentsOtherSecInd
Report Program Related InvstfalseReportProgramRelatedInvstInd
Report Other AssetsYes (true)ReportOtherAssetsInd
Report Other LiabilitiesYes (true)ReportOtherLiabilitiesInd
Include FIN48 FootnoteYes (true)IncludeFIN48FootnoteInd
Independent Audit Fincl StmtYes (true)IndependentAuditFinclStmtInd
Consolidated Audit Fincl StmtfalseConsolidatedAuditFinclStmtInd
School OperatingfalseSchoolOperatingInd
Foreign OfficefalseForeignOfficeInd
Foreign ActivitiesfalseForeignActivitiesInd
More Than5000 K To OrgfalseMoreThan5000KToOrgInd
More Than5000 K To IndividualsfalseMoreThan5000KToIndividualsInd
Professional FundraisingfalseProfessionalFundraisingInd
Fundraising ActivitiesfalseFundraisingActivitiesInd
Gaming ActivitiesfalseGamingActivitiesInd
Operate HospitalfalseOperateHospitalInd
Grants To OrganizationsfalseGrantsToOrganizationsInd
Grants To IndividualsfalseGrantsToIndividualsInd
Schedule J RequiredfalseScheduleJRequiredInd
Tax Exempt BondsfalseTaxExemptBondsInd
Engaged In Excess Benefit TransfalseEngagedInExcessBenefitTransInd
PY Excess Benefit TransfalsePYExcessBenefitTransInd
Loan OutstandingfalseLoanOutstandingInd
Grant To Related PersonfalseGrantToRelatedPersonInd
Business Rln With Org MemfalseBusinessRlnWithOrgMemInd
Business Rln With Fam MemfalseBusinessRlnWithFamMemInd
Business Rln With35 Ctrl EntfalseBusinessRlnWith35CtrlEntInd
Deductible Non Cash ContrifalseDeductibleNonCashContriInd
Deductible Art ContributionfalseDeductibleArtContributionInd
Terminate OperationsfalseTerminateOperationsInd
Partial LiquidationfalsePartialLiquidationInd
Disregarded EntityfalseDisregardedEntityInd
Related EntityYes (true)RelatedEntityInd
Related Organization Ctrl EntfalseRelatedOrganizationCtrlEntInd
Trnsfr Exmpt Non Chrtbl Rltd OrgfalseTrnsfrExmptNonChrtblRltdOrgInd
Activities Conducted PrtshpfalseActivitiesConductedPrtshpInd
Schedule O RequiredYes (true)ScheduleORequiredInd
IRP Document10IRPDocumentCnt
IRP Document W2 G0IRPDocumentW2GCnt
Backup Wthld ComplianceYes (true)BackupWthldComplianceInd
Employee7EmployeeCnt
Employment Tax Returns FiledYes (true)EmploymentTaxReturnsFiledInd
Unrelated Bus Incm Over LimitfalseUnrelatedBusIncmOverLimitInd
Foreign Financial AccountfalseForeignFinancialAccountInd
Prohibited Tax Shelter TransfalseProhibitedTaxShelterTransInd
Taxable Party NotificationfalseTaxablePartyNotificationInd
Nondeductible ContributionsfalseNondeductibleContributionsInd
Quid Pro Quo ContributionsfalseQuidProQuoContributionsInd
Form8282 Property Disposed OffalseForm8282PropertyDisposedOfInd
Rcv Fnds To Pay Prsnl Bnft CntrctfalseRcvFndsToPayPrsnlBnftCntrctInd
Pay Premiums Prsnl Bnft CntrctfalsePayPremiumsPrsnlBnftCntrctInd
Form8899 FiledindfalseForm8899Filedind
Form1098 C FiledfalseForm1098CFiledInd
Indoor Tanning ServicesfalseIndoorTanningServicesInd
Subj To Tax Rmnrtn Ex Prcht PymtfalseSubjToTaxRmnrtnExPrchtPymtInd
Subject To Excs Tax Net Invst IncfalseSubjectToExcsTaxNetInvstIncInd
Info In Schedule O Part VIYes (X)InfoInScheduleOPartVIInd
Governing Body Voting Members21GoverningBodyVotingMembersCnt
Independent Voting Member21IndependentVotingMemberCnt
Family Or Business RlnfalseFamilyOrBusinessRlnInd
Delegation Of Mgmt DutiesfalseDelegationOfMgmtDutiesInd
Change To Org DocumentsfalseChangeToOrgDocumentsInd
Material Diversion Or MisusefalseMaterialDiversionOrMisuseInd
Members Or StockholdersfalseMembersOrStockholdersInd
Election Of Board MembersYes (true)ElectionOfBoardMembersInd
Decisions Subject To ApprovaYes (true)DecisionsSubjectToApprovaInd
Minutes Of Governing BodyYes (true)MinutesOfGoverningBodyInd
Minutes Of CommitteesYes (true)MinutesOfCommitteesInd
Officer Mailing AddressfalseOfficerMailingAddressInd
Local ChaptersfalseLocalChaptersInd
Form990 Provided To Gvrn BodyYes (true)Form990ProvidedToGvrnBodyInd
Conflict Of Interest PolicyYes (true)ConflictOfInterestPolicyInd
Annual Disclosure Covered PrsnYes (true)AnnualDisclosureCoveredPrsnInd
Regular Monitoring EnfrcYes (true)RegularMonitoringEnfrcInd
Whistleblower PolicyYes (true)WhistleblowerPolicyInd
Document Retention PolicyYes (true)DocumentRetentionPolicyInd
Compensation Process CEOYes (true)CompensationProcessCEOInd
Compensation Process OtherYes (true)CompensationProcessOtherInd
Investment In Joint VenturefalseInvestmentInJointVentureInd
States Where Copy Of Return Is FldNJStatesWhereCopyOfReturnIsFldCd
Other WebsiteYes (X)OtherWebsiteInd

Books In Care Of Detail BooksInCareOfDetail

FieldValueIRS element (for citing)
PersonORGANIZATIONPersonNm
Phone6099212772PhoneNum

US Address USAddress

FieldValueIRS element (for citing)
Address Line157 MOUNTAIN AVENUEAddressLine1Txt
CityPRINCETONCityNm
State AbbreviationNJStateAbbreviationCd
ZIP08540ZIPCd
FieldValueIRS element (for citing)
No Listed Persons CompensatedYes (X)NoListedPersonsCompensatedInd

Form990 Part VII Section A Form990PartVIISectionAGrp (22 entries)

TitleTitleTxtAverage Hours Per WeekAverageHoursPerWeekRtIndividual Trustee Or DirectorIndividualTrusteeOrDirectorIndReportable Comp From OrgReportableCompFromOrgAmtReportable Comp From Rltd OrgReportableCompFromRltdOrgAmtOther CompensationOtherCompensationAmtOfficerOfficerInd
NASIM ALI
TRUSTEE1.00Yes (X)$0$0$0
JESSICA ATKINS
TRUSTEE1.00Yes (X)$0$0$0
PETER GREEN
TRUSTEE1.00Yes (X)$0$0$0
ANDREA HONORE
TRUSTEE1.00Yes (X)$0$0$0
FREDERICK BIGELOW JR
TREASURER5.00Yes (X)$0$0$0Yes (X)
HAYDEN SMITH JR
TRUSTEE1.00Yes (X)$0$0$0
LIZ LEMPERT
TRUSTEE1.00Yes (X)$0$0$0
CLARK LENNON
VICE-PRESIDE10.00Yes (X)$0$0$0Yes (X)
ANNARIE LYLES
TRUSTEE1.00Yes (X)$0$0$0
SCOTIA MACRAE
TRUSTEE1.00Yes (X)$0$0$0
WENDY L MAGER
PRESIDENT10.00Yes (X)$0$0$0Yes (X)
FRAN MCMANUS
TRUSTEE1.00Yes (X)$0$0$0
DANA MOLINA
TRUSTEE1.00Yes (X)$0$0$0
DIANA NEWBY
TRUSTEE1.00Yes (X)$0$0$0
HILARY PERSKY
SECRETARY10.00Yes (X)$0$0$0Yes (X)
GEORGE POINT
TRUSTEE (JUL1.00Yes (X)$0$0$0
THOMAS E SCHORR
TRUSTEE4.00Yes (X)$0$0$0
WINIFRED HUGHES SPAR
TRUSTEE1.00Yes (X)$0$0$0
RUKSHANA TARAPOREWALA
TRUSTEE1.00Yes (X)$0$0$0
ERIC TAZELAAR
TRUSTEE1.00Yes (X)$0$0$0
MICHAEL TIMMONS
TRUSTEE1.00Yes (X)$0$0$0
ROBERT VON ZUMBUSCH
VICE-PRESIDE10.00Yes (X)$0$0$0Yes (X)
FieldValueIRS element (for citing)
Former Ofcr Employees ListedfalseFormerOfcrEmployeesListedInd
Total Comp Greater Than150 KfalseTotalCompGreaterThan150KInd
Compensation From Other SrcsfalseCompensationFromOtherSrcsInd
Related Organizations$87,000RelatedOrganizationsAmt
All Other Contributions$206,767AllOtherContributionsAmt
Total Contributions$293,767TotalContributionsAmt

Investment Income InvestmentIncomeGrp

FieldValueIRS element (for citing)
Total Revenue Column$2,491TotalRevenueColumnAmt
Exclusion$2,491ExclusionAmt

Gross Amount Sales Assets GrossAmountSalesAssetsGrp

FieldValueIRS element (for citing)
Securities$56,073SecuritiesAmt

Less Cost Oth Basis Sales Expnss LessCostOthBasisSalesExpnssGrp

FieldValueIRS element (for citing)
Securities$56,174SecuritiesAmt

Gain Or Loss GainOrLossGrp

FieldValueIRS element (for citing)
Securities-$101SecuritiesAmt

Net Gain Or Loss Investments NetGainOrLossInvestmentsGrp

FieldValueIRS element (for citing)
Total Revenue Column-$101TotalRevenueColumnAmt
Related Or Exempt Func Income-$101RelatedOrExemptFuncIncomeAmt

Total Revenue TotalRevenueGrp

FieldValueIRS element (for citing)
Total Revenue Column$296,157TotalRevenueColumnAmt
Related Or Exempt Func Income-$101RelatedOrExemptFuncIncomeAmt
Exclusion$2,491ExclusionAmt

Other Salaries And Wages OtherSalariesAndWagesGrp

FieldValueIRS element (for citing)
Total$148,233TotalAmt
Program Services$148,233ProgramServicesAmt

Other Employee Benefits OtherEmployeeBenefitsGrp

FieldValueIRS element (for citing)
Total$3,720TotalAmt
Program Services$3,720ProgramServicesAmt

Payroll Taxes PayrollTaxesGrp

FieldValueIRS element (for citing)
Total$12,508TotalAmt
Program Services$12,508ProgramServicesAmt

Fees For Services Accounting FeesForServicesAccountingGrp

FieldValueIRS element (for citing)
Total$13,106TotalAmt
Management And General$13,106ManagementAndGeneralAmt

Fees For Services Other FeesForServicesOtherGrp

FieldValueIRS element (for citing)
Total$17,125TotalAmt
Management And General$17,125ManagementAndGeneralAmt

Office Expenses OfficeExpensesGrp

FieldValueIRS element (for citing)
Total$16,991TotalAmt
Management And General$16,991ManagementAndGeneralAmt

Occupancy OccupancyGrp

FieldValueIRS element (for citing)
Total$7,200TotalAmt
Management And General$7,200ManagementAndGeneralAmt

Conferences Meetings ConferencesMeetingsGrp

FieldValueIRS element (for citing)
Total$765TotalAmt
Management And General$765ManagementAndGeneralAmt

Depreciation Depletion DepreciationDepletionGrp

FieldValueIRS element (for citing)
Total$200TotalAmt
Management And General$200ManagementAndGeneralAmt

Insurance InsuranceGrp

FieldValueIRS element (for citing)
Total$9,742TotalAmt
Program Services$6,819ProgramServicesAmt
Management And General$2,923ManagementAndGeneralAmt

Other Expenses OtherExpensesGrp (2 entries)

DescDescTotalTotalAmtProgram ServicesProgramServicesAmtManagement And GeneralManagementAndGeneralAmt
PROGRAM COSTS$83,612$83,612
BANK SERVICE CHARGES$332$332

Total Functional Expenses TotalFunctionalExpensesGrp

FieldValueIRS element (for citing)
Total$313,534TotalAmt
Program Services$254,892ProgramServicesAmt
Management And General$58,642ManagementAndGeneralAmt
Fundraising$0FundraisingAmt

Cash Non Interest Bearing CashNonInterestBearingGrp

FieldValueIRS element (for citing)
BOY$263,041BOYAmt
EOY$248,633EOYAmt
FieldValueIRS element (for citing)
Land Bldg Equip Cost Or Other Bss$2,929,304LandBldgEquipCostOrOtherBssAmt
Land Bldg Equip Accum Deprec$7,054LandBldgEquipAccumDeprecAmt

Land Bldg Equip Basis Net LandBldgEquipBasisNetGrp

FieldValueIRS element (for citing)
BOY$2,922,450BOYAmt
EOY$2,922,250EOYAmt

Investments Pub Traded Sec InvestmentsPubTradedSecGrp

FieldValueIRS element (for citing)
BOY$52,032BOYAmt
EOY$55,558EOYAmt

Other Assets Total OtherAssetsTotalGrp

FieldValueIRS element (for citing)
BOY$551,422BOYAmt
EOY$562,763EOYAmt

Total Assets TotalAssetsGrp

FieldValueIRS element (for citing)
BOY$3,788,945BOYAmt
EOY$3,789,204EOYAmt

Accounts Payable Accr Expnss AccountsPayableAccrExpnssGrp

FieldValueIRS element (for citing)
BOY$10,239BOYAmt
EOY$26,482EOYAmt

Other Liabilities OtherLiabilitiesGrp

FieldValueIRS element (for citing)
BOY$25,202BOYAmt
EOY$26,462EOYAmt

Total Liabilities TotalLiabilitiesGrp

FieldValueIRS element (for citing)
BOY$35,441BOYAmt
EOY$52,944EOYAmt
FieldValueIRS element (for citing)
Organization Follows FASB117Yes (X)OrganizationFollowsFASB117Ind

No Donor Restriction Net Assets NoDonorRestrictionNetAssetsGrp

FieldValueIRS element (for citing)
BOY$3,191,700BOYAmt
EOY$3,166,398EOYAmt

Donor Restriction Net Assets DonorRestrictionNetAssetsGrp

FieldValueIRS element (for citing)
BOY$561,804BOYAmt
EOY$569,862EOYAmt

Total Net Assets Fund Balance TotalNetAssetsFundBalanceGrp

FieldValueIRS element (for citing)
BOY$3,753,504BOYAmt
EOY$3,736,260EOYAmt

Tot Liab Net Assets Fund Balance TotLiabNetAssetsFundBalanceGrp

FieldValueIRS element (for citing)
BOY$3,788,945BOYAmt
EOY$3,789,204EOYAmt
FieldValueIRS element (for citing)
Reconcilation Revenue Expnss-$17,377ReconcilationRevenueExpnssAmt
Net Unrlzd Gains Losses Invst$133NetUnrlzdGainsLossesInvstAmt
Method Of Accounting AccrualYes (X)MethodOfAccountingAccrualInd
Accountant Compile Or ReviewfalseAccountantCompileOrReviewInd
FS AuditedYes (true)FSAuditedInd

FS Audited Basis FSAuditedBasisGrp

FieldValueIRS element (for citing)
Separate Basis Fincl StmtYes (X)SeparateBasisFinclStmtInd
FieldValueIRS element (for citing)
Audit CommitteeYes (true)AuditCommitteeInd
Federal Grant Audit RequiredfalseFederalGrantAuditRequiredInd

Schedule A IRS990ScheduleA

FieldValueIRS element (for citing)
Publicly Supported Org509a2Yes (X)PubliclySupportedOrg509a2Ind

Gifts Grants Contris Rcvd509 GiftsGrantsContrisRcvd509Grp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$204,285CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$219,343CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$725,929CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$277,261CurrentTaxYearMinus1YearAmt
Current Tax Year$293,767CurrentTaxYearAmt
Total$1,720,585TotalAmt

Total509 Total509Grp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$204,285CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$219,343CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$725,929CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$277,261CurrentTaxYearMinus1YearAmt
Current Tax Year$293,767CurrentTaxYearAmt
Total$1,720,585TotalAmt
FieldValueIRS element (for citing)
Public Support Total509$1,720,585PublicSupportTotal509Amt

Gross Investment Income509 GrossInvestmentIncome509Grp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$24CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$13CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$144CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$2,272CurrentTaxYearMinus1YearAmt
Current Tax Year$2,491CurrentTaxYearAmt
Total$4,944TotalAmt

Investment Income And UBTI InvestmentIncomeAndUBTIGrp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$24CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$13CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$144CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$2,272CurrentTaxYearMinus1YearAmt
Current Tax Year$2,491CurrentTaxYearAmt
Total$4,944TotalAmt

Total Support Calendar Year TotalSupportCalendarYearGrp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$204,309CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$219,356CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$726,073CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$279,533CurrentTaxYearMinus1YearAmt
Current Tax Year$296,258CurrentTaxYearAmt
Total$1,725,529TotalAmt
FieldValueIRS element (for citing)
Public Support CY5090.99710PublicSupportCY509Pct
Public Support PY5090.99850PublicSupportPY509Pct
Investment Income CY0.00000InvestmentIncomeCYPct
Investment Income PY0.00000InvestmentIncomePYPct
Thirty Thr Pct Suprt Tests CY509Yes (X)ThirtyThrPctSuprtTestsCY509Ind

Schedule B IRS990ScheduleB

Contributor Information ContributorInformationGrp

FieldValueIRS element (for citing)
ContributorRESTRICTEDContributorNum

Contributor Business Name ContributorBusinessName

FieldValueIRS element (for citing)
Business Name Line1RESTRICTEDBusinessNameLine1

Contributor US Address ContributorUSAddress

FieldValueIRS element (for citing)
Address Line1RESTRICTEDAddressLine1
Address Line2RESTRICTEDAddressLine2
CityRESTRICTEDCity
StateRESTRICTEDState
ZIP CodeRESTRICTEDZIPCode
FieldValueIRS element (for citing)
Total ContributionsRESTRICTEDTotalContributionsAmt

Schedule D IRS990ScheduleD

FieldValueIRS element (for citing)
Preservation Public UseYes (X)PreservationPublicUseInd
Protection Natural HabitatYes (X)ProtectionNaturalHabitatInd
Preservation Open SpaceYes (X)PreservationOpenSpaceInd
Historic Land AreaYes (X)HistoricLandAreaInd
Total Easements2TotalEasementsCnt
Total Acreage75.00TotalAcreageCnt
Written Policy MonitoringfalseWrittenPolicyMonitoringInd

CY Endwmt Fund CYEndwmtFundGrp

FieldValueIRS element (for citing)
Beginning Year Balance$554,281BeginningYearBalanceAmt
Investment Earnings Or Losses$53,064InvestmentEarningsOrLossesAmt
Other Expenditures$38,415OtherExpendituresAmt
Administrative Expenses$4,568AdministrativeExpensesAmt
End Year Balance$564,362EndYearBalanceAmt

CY Minus1 Yr Endwmt Fund CYMinus1YrEndwmtFundGrp

FieldValueIRS element (for citing)
Beginning Year Balance$496,822BeginningYearBalanceAmt
Investment Earnings Or Losses$74,055InvestmentEarningsOrLossesAmt
Other Expenditures$12,279OtherExpendituresAmt
Administrative Expenses$4,317AdministrativeExpensesAmt
End Year Balance$554,281EndYearBalanceAmt

CY Minus2 Yr Endwmt Fund CYMinus2YrEndwmtFundGrp

FieldValueIRS element (for citing)
Beginning Year Balance$460,316BeginningYearBalanceAmt
Investment Earnings Or Losses$64,931InvestmentEarningsOrLossesAmt
Other Expenditures$24,373OtherExpendituresAmt
Administrative Expenses$4,052AdministrativeExpensesAmt
End Year Balance$496,822EndYearBalanceAmt

CY Minus3 Yr Endwmt Fund CYMinus3YrEndwmtFundGrp

FieldValueIRS element (for citing)
Beginning Year Balance$549,205BeginningYearBalanceAmt
Investment Earnings Or Losses-$58,590InvestmentEarningsOrLossesAmt
Other Expenditures$25,875OtherExpendituresAmt
Administrative Expenses$4,424AdministrativeExpensesAmt
End Year Balance$460,316EndYearBalanceAmt

CY Minus4 Yr Endwmt Fund CYMinus4YrEndwmtFundGrp

FieldValueIRS element (for citing)
Beginning Year Balance$448,293BeginningYearBalanceAmt
Investment Earnings Or Losses$130,047InvestmentEarningsOrLossesAmt
Other Expenditures$24,910OtherExpendituresAmt
Administrative Expenses$4,225AdministrativeExpensesAmt
End Year Balance$549,205EndYearBalanceAmt
FieldValueIRS element (for citing)
Prmnnt Endowment Balance EOY1.00000PrmnntEndowmentBalanceEOYPct
Endowments Held Unrelated OrgYes (true)EndowmentsHeldUnrelatedOrgInd
Endowments Held Related OrgfalseEndowmentsHeldRelatedOrgInd

Land LandGrp

FieldValueIRS element (for citing)
Other Cost Or Other Basis$2,922,033OtherCostOrOtherBasisAmt
Book Value$2,922,033BookValueAmt

Other Land Buildings OtherLandBuildingsGrp

FieldValueIRS element (for citing)
Other Cost Or Other Basis$7,271OtherCostOrOtherBasisAmt
Depreciation$7,054DepreciationAmt
Book Value$217BookValueAmt
FieldValueIRS element (for citing)
Total Book Value Land Buildings$2,922,250TotalBookValueLandBuildingsAmt

Other Assets Org OtherAssetsOrgGrp (2 entries)

DescDescBook ValueBookValueAmt
ENDOWMENT ASSETS$536,301
CASH HELD FOR THIRD-PARTY$26,462
FieldValueIRS element (for citing)
Total Book Value Other Assets$562,763TotalBookValueOtherAssetsAmt

Other Liabilities Org OtherLiabilitiesOrgGrp

FieldValueIRS element (for citing)
DescCASH HELD FOR THIRD PARTYDesc
Amt$26,462Amt
FieldValueIRS element (for citing)
Total Liability$26,462TotalLiabilityAmt
Footnote TextYes (X)FootnoteTextInd
Total Rev Etc Audited Fincl Stmt$296,290TotalRevEtcAuditedFinclStmtAmt
Net Unrealized Gains Invst$133NetUnrealizedGainsInvstAmt
Revenue Not Reported$133RevenueNotReportedAmt
Revenue Subtotal$296,157RevenueSubtotalAmt
Total Revenue Per Form990$296,157TotalRevenuePerForm990Amt
Tot Expns Etc Audited Fincl Stmt$313,534TotExpnsEtcAuditedFinclStmtAmt
Expenses Subtotal$313,534ExpensesSubtotalAmt
Total Expenses Per Form990$313,534TotalExpensesPerForm990Amt

Supplemental Information Detail SupplementalInformationDetail

FieldValueIRS element (for citing)
Form And Line ReferenceSCHEDULE D, PAGE 3, PART XFormAndLineReferenceDesc
ExplanationTHE ORGANIZATION IS A TAX-EXEMPT ORGANIZATION UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE. ACCORDINGLY, NO PROVISION FOR FEDERAL OR STATE INCOME TAXES HAS BEEN RECORDED IN THE FINANCIAL STATEMENTS GENERALLY ACCEPTED ACCOUNTING PRINCIPLES PRESCRIBES A RECOGNITION THRESHOLD AND MEASUREMENT ATTRIBUTE FOR THE FINANCIAL STATEMENT RECOGNITION AND MEASUREMENT OF A TAX POSITION TAKEN OR EXPECTED TO BE TAKEN IN A TAX RETURN. IT REQUIRES THAT COMPUTATIONS OF CURRENT AND DEFERRED INCOME TAXES ONLY CONSIDER TAX POSITIONS THAT ARE MORE LIKELY THAN NOT TO BE SUSTAINED IF THE TAX AUTHORITIES EXAMINE THE POSITION. THE ORGANIZATION EVALUATES STATUTES OF LIMITATIONS, CHANGES IN TAX LAW AND NEW AUTHORITATIVE RULINGS AND ACCRUES FOR LIABILITIES IF APPLICABLE. THE ORGANIZATION'S ANALYSIS FOUND NO UNCERTAIN TAX POSITIONS. FEDERAL AND STATE TAX RETURNS ARE SUBJECT TO EXAMINATION BY THE TAXING AUTHORITIES GENERALLY FOR A PERIOD OF THREE YEARS AFTER THEY ARE FILED. ANY PENALTIES AND INTEREST ASSESSED BY TAXING AUTHORITIES ARE INCLUDED IN OPERATING EXPENSES. NO INTEREST AND PENALTIES HAVE BEEN RECORDED FOR THE YEAR ENDED JUNE 30, 2025.ExplanationTxt

Schedule O IRS990ScheduleO

Supplemental Information Detail SupplementalInformationDetail (11 entries)

Form And Line ReferenceFormAndLineReferenceDescExplanationExplanationTxt
FORM 990 - ORGANIZATION'S MISSIONIN PRINCETON: ACQUIRING OPEN SPACE FOR PRESERVATION, PROTECTING NATURAL RESOURCES, MAINTAINING ACCESSIBILITY TO TRAILS AND PROVIDING ENVIRONMENTAL EDUCATION. IN THE PRINCETON REGION: WORKING WITH GROUPS TO SUPPORT EFFORTS TO PRESERVE AND PROTECT OPEN SPACE AND THE ENVIRONMENT.
FORM 990FORM 990, SCHEDULE D, PART IX, LINE 2 AND PART X, LINE 2 - FOPOS HOLDS FUNDS FOR FRIENDS OF ROGERS REFUGE, AN ENTITY WITH WHICH FOPOS HAS ENTERED INTO A SPONSORSHIP AGREEMENT.
FORM 990, PAGE 1, PART I, LINE 6VOLUNTEERS SERVE ON THE BOARD AND ASSIST WITH ACTIVITIES THROUGHOUT THE YEAR.
FORM 990, PAGE 6, PART VI, LINE 1AEXECUTIVE COMMITTEE AUTHORITY IS EQUIVALENT TO GOVERNING BODY AUTHORITY.
FORM 990, PAGE 6, PART VI, LINE 7ATRUSTEES ARE ELECTED BY ORGANIZATION'S MEMBERS
FORM 990, PAGE 6, PART VI, LINE 7BTRUSTEES ARE ELECTED BY THE ORGANIZATION'S MEMBERS
FORM 990, PAGE 6, PART VI, LINE 11BFORM 990 IS REVIEWED BY THE FINANCE COMMITTEE AND IS CIRCULATED TO THE BOARD OF TRUSTEES AND OTHERS PRIOR TO BEING FILED WITH THE IRS.
FORM 990, PAGE 6, PART VI, LINE 12CPROSPECTIVE BOARD MEMBERS ARE GIVEN THE CONFLICT OF INTEREST POLICY ALONG WITH OTHER MATERIALS DESCRIBING RESPONSIBILITIES AND RULES GOVERNING SERVICE OF TRUSTEES. ON AN ANNUAL BASIS, THE BOARD AND KEY EMPLOYEES ARE PROVIDED A COPY OF THE CONFLICT OF INTEREST POLICY AND REQUESTED TO RETURN A FORM DESCRIBING THEIR CURRENT AFFILIATIONS THAT COULD POTENTIALLY POSE A CONFLICT OF INTEREST. THE TREASURER FOLLOWS UP WITH BOARD MEMBERS AND KEY EMPLOYEES WHO HAVEN'T SIGNED.
FORM 990, PAGE 6, PART VI, LINE 15ATHE BOARD OF TRUSTEES DO NOT RECEIVE COMPENSATION.
FORM 990, PAGE 6, PART VI, LINE 15BCOMPENSATION FOR KEY EMPLOYEES IS REVIEWED AND APPROVED BY THE BOARD OF TRUSTEES.
FORM 990, PAGE 6, PART VI, LINE 19GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON REQUEST.

Schedule R IRS990ScheduleR

Id Related Tax Exempt Org IdRelatedTaxExemptOrgGrp

Disregarded Entity Name DisregardedEntityName

FieldValueIRS element (for citing)
Business Name Line1MOUNTAIN LAKES HOLDING CORPBusinessNameLine1Txt

US Address USAddress

FieldValueIRS element (for citing)
Address Line157 MOUNTAIN AVENUEAddressLine1Txt
CityPRINCETONCityNm
State AbbreviationNJStateAbbreviationCd
ZIP08540ZIPCd
FieldValueIRS element (for citing)
EIN222872771EIN
Primary ActivitiesPROP MGMTPrimaryActivitiesTxt
Legal Domicile StateNJLegalDomicileStateCd
Exempt Code Section2ExemptCodeSectionTxt
Direct Controlling NAN/ADirectControllingNACd
Controlled OrganizationfalseControlledOrganizationInd
FieldValueIRS element (for citing)
Receipt Of Int Annts Rnts RyltsfalseReceiptOfIntAnntsRntsRyltsInd
Gift Grnt Or Cap Contri To Oth OrgfalseGiftGrntOrCapContriToOthOrgInd
Gift Grnt Cap Contri From Oth OrgYes (true)GiftGrntCapContriFromOthOrgInd
Loans Or Guarantees To Other OrgfalseLoansOrGuaranteesToOtherOrgInd
Loans Or Guarantees From Oth OrgfalseLoansOrGuaranteesFromOthOrgInd
Div Related OrganizationfalseDivRelatedOrganizationInd
Asset Sale To Other OrgfalseAssetSaleToOtherOrgInd
Asset Purchase From Other OrgfalseAssetPurchaseFromOtherOrgInd
Asset ExchangefalseAssetExchangeInd
Rental Of Facilities To Oth OrgfalseRentalOfFacilitiesToOthOrgInd
Rental Of Fclts From Oth OrgYes (true)RentalOfFcltsFromOthOrgInd
Perform Of Services For Oth OrgfalsePerformOfServicesForOthOrgInd
Perform Of Services By Other OrgfalsePerformOfServicesByOtherOrgInd
Sharing Of FacilitiesYes (true)SharingOfFacilitiesInd
Paid Employees SharingfalsePaidEmployeesSharingInd
Reimbursement Paid To Other OrgfalseReimbursementPaidToOtherOrgInd
Reimbursement Paid By Other OrgfalseReimbursementPaidByOtherOrgInd
Transfer To Other OrgfalseTransferToOtherOrgInd
Transfer From Other OrgfalseTransferFromOtherOrgInd

Transactions Related Org TransactionsRelatedOrgGrp (3 entries)

Transaction TypeTransactionTypeTxtInvolvedInvolvedAmtMethod Of Amount DeterminationMethodOfAmountDeterminationTxt
MOUNTAIN LAKES HOLDING CORP
K$7,200LEASE
MOUNTAIN LAKES HOLDING CORP
C$87,000MUTUAL AGREEMENT
MOUNTAIN LAKES HOLDING CORP
NMUTUAL AGREEMENT