Liabilities / Assets
59th percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 82-1716267 • 501(c)3 • Boulder, CO
Profile
Boulder Open Space Conservancy is a non-profit organization that partners with the City of Boulder Open Space and Mountain Parks department to promote and enhance the ecological resilience of our public lands to climate change through sponsorship of conservation projects and community education for the benefit of all current and future generations of Boulder citizens and visitors.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
59th percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
61st percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
42nd percentile
Higher net margin than 42% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
51st percentile
Faster asset growth than 51% of similar nonprofits.
Revenue Growth
41st percentile
Faster revenue growth than 41% of similar nonprofits.
Assets
Up$165,984
Up $21,139 (+15%) from 2024
Liabilities
-
No earlier filing loaded for comparison.
Net Assets
Up$165,984
Up $21,139 (+15%) from 2024
Revenue
Up$186,389
Up $31,975 (+21%) from 2024
Expenses
Up$165,250
Up $35,298 (+27%) from 2024
Net Income
Down$21,139
Down $3,323 (-14%) from 2024
Most recent year
2025 • Form 990EZDetailed filing. Detailed filing data is available for this year.
In 2021 BOSC fundraised and Contributed $34,405 to City of Boulder OSMP for Mt. Sanitas hiking trail maintenance and improvements. The expense in 28A ($23,729) are for the contractor for Director of Development.
Boulder Open Space Conservancy is a non-profit organization that partners with the City of Boulder Open Space and Mountain Parks department to promote and enhance the ecological resilience of our public lands to climate change through sponsorship of conservation projects and community education for the benefit of all current and future generations of Boulder citizens and visitors.
| Description | Grants | Expenses |
|---|---|---|
| In 2025 BOSC raised community awareness and stewardship for public lands and trails in Boulder. BOSC contributed $60,000 to City of Boulder OSMP for Responsible Recreation & Infrastructure $29,850.11 Connecting Youth to Nature & Boulder Junior Ranger program $10,044.65 and Climate Resilience & ReWilding projects $5,187.26 and $14,917.98 for other OSMP greatest project needs. | $60,000 | $142,437 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Alyson Duffey | Executive Director | FT | $87,559 | - | $87,559 |
| Diane Murphy | Chair | PT | $0 | - | - |
| Eric Washburn | Vice-Chair | PT | $0 | - | - |
| Jessica Dauchy | Treasurer | PT | $0 | - | - |
| Inga Juzysta | Trustee | PT | $0 | - | - |
| Sarah Glynn | Trustee | PT | $0 | - | - |
| Julie Shaffer | Trustee | PT | $0 | - | - |
“| Activity:, Grantee Name:, Grantee Address:, Amount:, Relationship:| To promote and enhance the ecological resilience of our public lands to climate change through sponsorship of conservation projects and community education for the benefit of all current and future generations of Boulder citizens and visitors., Boulder OSMP, "2520 55th St Boulder CO 80301", $60000.00, None|”
“| Other Expenses:, Amount:| Insurance, $727.00| Meals & Entertainment, $166.00| Office Supplies, $2427.00| Subscriptions and Memberships, $490.00| Permits Licenses, $185.00| Website IT & Software, $797.00| Payroll admin expenses, $204.00| Event supplies and expenses, $1662.00| bank fees, $1.00|”
“| Employee Name:, Description:| Alyson Duffey, 1099-NEC compensation switch to W-2 employee wages|”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
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| IRS990EZ/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | TerraRegen Balance LLC |
| IRS990EZ/BooksInCareOfDetail/PhoneNum | 0 | 5163156108 |
| IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 7301 W 44th ave |
| IRS990EZ/BooksInCareOfDetail/USAddress/CityNm | 0 | Wheat Ridge |
| IRS990EZ/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CO |
| IRS990EZ/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 80033 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/BOYAmt | 0 | 144845 |
| IRS990EZ/CashSavingsAndInvestmentsGrp/EOYAmt | 0 | 165984 |
| IRS990EZ/ChgMadeToOrgnzngDocNotRptInd | 0 | false |
| IRS990EZ/ContributionsGiftsGrantsEtcAmt | 0 | 186389 |
| IRS990EZ/CostOfGoodsSoldAmt | 0 | 0 |
| IRS990EZ/DonorAdvisedFndsInd | 0 | false |
| IRS990EZ/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990EZ/ExcessOrDeficitForYearAmt | 0 | 21139 |
| IRS990EZ/FeesAndOtherPymtToIndCntrctAmt | 0 | 15989 |
| IRS990EZ/FiledScheduleAInd | 0 | true |
| IRS990EZ/ForeignFinancialAccountInd | 0 | false |
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| IRS990EZ/Form990TotalAssetsGrp/EOYAmt | 0 | 165984 |
| IRS990EZ/GrantsAndSimilarAmountsPaidAmt | 0 | 60000 |
| IRS990EZ/GrossProfitLossSlsOfInvntryAmt | 0 | 0 |
| IRS990EZ/GrossReceiptsAmt | 0 | 186389 |
| IRS990EZ/GrossSalesOfInventoryAmt | 0 | 0 |
| IRS990EZ/InfoInScheduleOPartIInd | 0 | X |
| IRS990EZ/InfoInScheduleOPartIVInd | 0 | X |
| IRS990EZ/LobbyingActivitiesInd | 0 | false |
| IRS990EZ/MadeLoansToFromOfficersInd | 0 | false |
| IRS990EZ/MethodOfAccountingCashInd | 0 | X |
| IRS990EZ/NetAssetsOrFundBalancesBOYAmt | 0 | 144845 |
| IRS990EZ/NetAssetsOrFundBalancesEOYAmt | 0 | 165984 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/BOYAmt | 0 | 144845 |
| IRS990EZ/NetAssetsOrFundBalancesGrp/EOYAmt | 0 | 165984 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 0 | 5 |
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| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 6 | 5 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 0 | 0 |
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| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 5 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 6 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 0 | Diane Murphy |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 1 | Eric Washburn |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 2 | Jessica Dauchy |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 3 | Inga Juzysta |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 4 | Sarah Glynn |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 5 | Alyson Duffey |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 6 | Julie Shaffer |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 0 | Chair |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 1 | Vice-Chair |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 2 | Treasurer |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 3 | Trustee |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 4 | Trustee |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 5 | Executive Director |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt | 6 | Trustee |
| IRS990EZ/OperateHospitalInd | 0 | false |
| IRS990EZ/Organization501c3Ind | 0 | X |
| IRS990EZ/OrganizationDissolvedEtcInd | 0 | false |
| IRS990EZ/OrganizationHadUBIInd | 0 | false |
| IRS990EZ/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990EZ/OtherExpensesTotalAmt | 0 | 6659 |
| IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt | 0 | NONE |
| IRS990EZ/PartVIOfCompOfHghstPdEmplTxt | 0 | NONE |
| IRS990EZ/PoliticalCampaignActyInd | 0 | false |
| IRS990EZ/PrimaryExemptPurposeTxt | 0 | Boulder Open Space Conservancy is a non-profit organization that partners with the City of Boulder Open Space and Mountain Parks department to promote and enhance the ecological resilience of our public lands to climate change through sponsorship of conservation projects and community education for the benefit of all current and future generations of Boulder citizens and visitors. |
| IRS990EZ/PrintingPublicationsPostageAmt | 0 | 2211 |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 0 | In 2025 BOSC raised community awareness and stewardship for public lands and trails in Boulder. BOSC contributed $60,000 to City of Boulder OSMP for Responsible Recreation & Infrastructure $29,850.11 Connecting Youth to Nature & Boulder Junior Ranger program $10,044.65 and Climate Resilience & ReWilding projects $5,187.26 and $14,917.98 for other OSMP greatest project needs. |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/GrantsAndAllocationsAmt | 0 | 60000 |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt | 0 | 142437 |
| IRS990EZ/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990EZ/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990EZ/SalariesOtherCompEmplBnftAmt | 0 | 80391 |
| IRS990EZ/SchoolOperatingInd | 0 | false |
| IRS990EZ/StatesWhereCopyOfReturnIsFldCd | 0 | CO |
| IRS990EZ/SubjectToProxyTaxInd | 0 | false |
| IRS990EZ/TanningServicesProvidedInd | 0 | false |
| IRS990EZ/TotalExpensesAmt | 0 | 165250 |
| IRS990EZ/TotalProgramServiceExpensesAmt | 0 | 142437 |
| IRS990EZ/TotalRevenueAmt | 0 | 186389 |
| IRS990EZ/TransactionWithControlEntInd | 0 | false |
| IRS990EZ/TrnsfrExmptNonChrtblRltdOrgInd | 0 | false |
| IRS990EZ/TypeOfOrganizationOtherDesc | 0 | 501c3 Non-profit |
| IRS990EZ/TypeOfOrganizationOtherInd | 0 | X |
| IRS990EZ/WebsiteAddressTxt | 0 | bosc.org |
| IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | | S.No:, Year:, Description:| |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | Part III, line 12 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 186389 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 154414 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 98381 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 108185 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 42166 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 589535 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl509Grp/CurrentTaxYearAmt | 0 | 0 |
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| IRS990ScheduleA/GovtFurnSrvcFcltsVl509Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
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| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt | 0 | 0 |
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| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.00 |
| IRS990ScheduleA/NetIncomeFromOtherUBIGrp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/NetIncomeFromOtherUBIGrp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/NetIncomeFromOtherUBIGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/NetIncomeFromOtherUBIGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/NetIncomeFromOtherUBIGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/NetIncomeFromOtherUBIGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/OtherIncome509Grp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/OtherIncome509Grp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/OtherIncome509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/OtherIncome509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/OtherIncome509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/OtherIncome509Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/Post1975UBTIGrp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/Post1975UBTIGrp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/Post1975UBTIGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/Post1975UBTIGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/Post1975UBTIGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/Post1975UBTIGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 1 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 1.00 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 589535 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/SubstantialContributorsAmtGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 186389 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 154414 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 98381 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 108185 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 42166 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 589535 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 186389 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 154414 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 98381 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 108185 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 42166 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 589535 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | | Activity:, Grantee Name:, Grantee Address:, Amount:, Relationship:| To promote and enhance the ecological resilience of our public lands to climate change through sponsorship of conservation projects and community education for the benefit of all current and future generations of Boulder citizens and visitors., Boulder OSMP, "2520 55th St Boulder CO 80301", $60000.00, None| |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | | Other Expenses:, Amount:| Insurance, $727.00| Meals & Entertainment, $166.00| Office Supplies, $2427.00| Subscriptions and Memberships, $490.00| Permits Licenses, $185.00| Website IT & Software, $797.00| Payroll admin expenses, $204.00| Event supplies and expenses, $1662.00| bank fees, $1.00| |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | | Employee Name:, Description:| Alyson Duffey, 1099-NEC compensation switch to W-2 employee wages| |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part I, line 10 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Part I, line 16 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Part IV, List of Officers |
| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | false |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | Alyson Duffey |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | Executive Director |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 7209858528 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2026-03-09 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | Boulder Open Space Conservancy |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | BOUL |
| ReturnHeader/Filer/EIN | 0 | 821716267 |
| ReturnHeader/Filer/ForeignPhoneNum | 0 | 7209858528 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | PO Box 1765 |
| ReturnHeader/Filer/USAddress/CityNm | 0 | Boulder |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | CO |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 80306 |
| ReturnHeader/ReturnTs | 0 | 2026-03-08T17:15:42-04:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990EZ |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2025-01-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2025-12-31 |
| ReturnHeader/TaxYr | 0 | 2025 |
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