Liabilities / Assets
Score unavailable
Liabilities-to-assets requires both liabilities and assets on the latest valid filing.
Boulder Open Space Conservancy
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.
Siviq Scores
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
No value available
Liabilities / Revenue
Score unavailable
Liabilities-to-revenue requires both liabilities and revenue on the latest valid filing.
Net Margin
65th percentile
Higher net margin than 65% of similar nonprofits.
Top Officer Pay
97th percentile
Higher top officer pay than 97% of similar nonprofits.
Top officer pay equals 47.0% of source-year revenue.
Asset Growth
72nd percentile
Faster asset growth than 72% of similar nonprofits.
Revenue Growth
72nd percentile
Faster revenue growth than 72% of similar nonprofits.
Balance Sheet
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
Trend Graphs
Filings
Most recent year
2025 • Form 990EZDetailed filing. Detailed filing data is available for this year.
- Assets
- $165,984
- Liabilities
- -
- Net assets
- $165,984
- Revenue
- $186,389
- Expenses
- $165,250
- Net income
- $21,139
Latest Filing Detail
Jump To
Filing Snapshot
- Filing Period
- Jan 1, 2025 to Dec 31, 2025
- Signed
- Mar 9, 2026
- Return Version
- 2025v4.0
- Gross Receipts
- $186,389
Mission and Program Overview
Mission
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.
Program Services
| 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 |
Compensation and Service Providers
Employees
| 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 | - | - |
Filing and Contact Details
Filer
- Filer Name
- Boulder Open Space Conservancy
- EIN
- 82-1716267
- Address
- PO Box 1765, Boulder, CO 80306
Signing Officer
- Name
- Alyson Duffey
- Title
- Executive Director
- Phone
- 7209858528
- Signed
- 2026-03-09
- Discuss with paid preparer
- No
Supplemental Narrative
Additional Explanations
Part I, line 10
“| 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|”
Part I, line 16
“| 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|”
Part IV, List of Officers
“| Employee Name:, Description:| Alyson Duffey, 1099-NEC compensation switch to W-2 employee wages|”
Raw XML Appendix238 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 |
|---|---|---|
| IRS990EZ/ActivitiesNotPreviouslyRptInd | 0 | false |
| 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 |
| IRS990EZ/ForeignOfficeInd | 0 | false |
| IRS990EZ/Form1120PolFiledInd | 0 | false |
| IRS990EZ/Form990TotalAssetsGrp/BOYAmt | 0 | 144845 |
| 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 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 1 | 5 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 2 | 5 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 3 | 5 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 4 | 5 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 5 | 40 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt | 6 | 5 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 5 | 87559 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt | 6 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 3 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 4 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 5 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt | 6 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 0 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 1 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 2 | 0 |
| IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt | 3 | 0 |
| 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 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl509Grp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| 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 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| 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 |
Document Assets
No mirrored PDF or thumbnail assets are attached yet.