Liabilities / Assets
6th percentile
Higher debt load relative to assets than 6% of similar nonprofits.
EIN 51-0180597 • 501(c)3 • Nantucket, MA
Profile
Protect nantucket's natural world and rural character by holding and enforcing conservation restrictions, commissioning scientific research, monitoring development proposals, engaging in legal proceedings to protect natural resources, and educating the public on local environmental issues.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
6th percentile
Higher debt load relative to assets than 6% of similar nonprofits.
Liabilities / Revenue
10th percentile
Higher debt load relative to revenue than 10% of similar nonprofits.
Net Margin
72nd percentile
Higher net margin than 72% of similar nonprofits.
Top Officer Pay
37th percentile
Higher top officer pay than 37% of similar nonprofits.
Top officer pay equals 11.4% of source-year revenue.
Asset Growth
53rd percentile
Faster asset growth than 53% of similar nonprofits.
Revenue Growth
69th percentile
Faster revenue growth than 69% of similar nonprofits.
Assets
Up$42,706,377
Up $2,395,720 (+5.9%) from 2023
Liabilities
Down$33,484
Down $127 (-0.4%) from 2023
Net Assets
Up$42,672,893
Up $2,395,847 (+5.9%) from 2023
Revenue
Up$1,871,102
Up $290,216 (+18%) from 2023
Expenses
Up$1,561,742
Up $270,927 (+21%) from 2023
Net Income
Up$309,360
Up $19,289 (+6.6%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
Preserve and protect nantucket island's open space, water, and other natual resources by holding conservation restrictions, monitoring development proposals, underwriting scientific research and sponsoring local environmental education.
Protect nantucket's natural world and rural character by holding and enforcing conservation restrictions, commissioning scientific research, monitoring development proposals, engaging in legal proceedings to protect natural resources, and educating the public on local environmental issues.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $16,269,628 | $18,793,202 | ▲ $2,523,574 |
| Land, Buildings, and Equipment, Net | $638,644 | $622,806 | ▼ $15,838 |
| Savings and Temporary Cash Investments | $224,400 | $133,248 | ▼ $91,152 |
| Prepaid Expenses and Deferred Charges | $8,400 | $8,400 | → $0 |
| Total Assets | $40,310,657 | $42,706,377 | ▲ $2,395,720 |
| Other Assets Total | $23,169,585 | $23,148,721 | ▼ $20,864 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $12,747 | $33,484 | ▲ $20,737 |
| Other Liabilities | $20,864 | $0 | ▼ $20,864 |
| Total Liabilities | $33,611 | $33,484 | ▼ $127 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $39,774,236 | $42,118,314 | ▲ $2,344,078 |
| Net Assets With Donor Restrictions | $502,810 | $554,579 | ▲ $51,769 |
| Total Net Assets Fund Balance | $40,277,046 | $42,672,893 | ▲ $2,395,847 |
| Total Liabilities and Net Assets / Fund Balance | $40,310,657 | $42,706,377 | ▲ $2,395,720 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Land | $465,400 | - | $465,400 |
| Buildings | $154,207 | $282,436 | $436,643 |
| Equipment | $3,199 | $61,868 | $65,067 |
| Other Assets Org | $23,148,721 | - | - |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2024 | $12,519,746 | $0 | ▲ $2,070,222 | $198,120 | $14,391,847 |
| 2023 | $10,801,893 | $101,546 | ▲ $1,829,998 | $213,691 | $12,519,746 |
| 2022 | $13,831,875 | $67 | ▼ $2,733,943 | $296,106 | $10,801,893 |
| 2021 | $11,947,254 | $150,000 | ▲ $1,896,891 | $162,270 | $13,831,875 |
| 2020 | $9,418,663 | $466,742 | ▲ $2,295,942 | $234,093 | $11,947,254 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Emily Molden | Executive Director | FT | $179,845 | $33,536 | $213,381 |
| Name | Title |
|---|---|
| Lucy Leske | President |
| Matt Liddle | Vice President |
| William Willet | Vice President |
| Alan Nathan | Director |
| Amy Rowland | Director |
| Annalise Nelson | Director |
| Carl H Sjolund | Director |
| Charles Platt | Director |
| Charles a Kilvert Iii | Director |
| David Troast | Director |
| Evan Jones | Director |
| H Brooks Smith | Director |
| Helen Weeks | Director |
| Keltie Donelan Mcdonald | Director |
| Lars Soderberg | Director |
| Mary-randolph Ballinger | Director |
| Matt Anderson | Director |
| Matt Haffenreffer | Director |
| Michelle Carvin | Director |
| Nancy Gillespie | Director |
| Nathaniel Greene | Director |
| Peter Mccausland | Director |
| Robert Friedman | Director |
| Robert P Lyons Jr | Director |
| Susan Baer | Director |
| Thomas V Farrell | Director |
| William Brenizer | Director |
| Susan E Robinson | Clerk |
| Laurel Ried Langworthy | Treasurer |
| Line Item | Amount |
|---|---|
| Other Expenses | $903,989 |
| Salaries, Compensation, and Employee Benefits | $657,753 |
| Total Fundraising Expense | $173,076 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $192,817 | $66,155 | $74,942 | $333,914 |
| Current Officers, Directors, Trustees, and Key Employees | $76,926 | $76,296 | $38,463 | $191,685 |
| Fees for Services Legal | $170,537 | - | - | $170,537 |
| Occupancy | $91,385 | $23,502 | $2,232 | $117,119 |
| Fees for Service Investment Mgmnt Fees | - | $111,431 | - | $111,431 |
| Other Employee Benefits | $39,281 | $20,744 | $16,514 | $76,539 |
| Payroll Taxes | $20,835 | $11,003 | $8,760 | $40,598 |
| Information Technology | $4,954 | $27,929 | - | $32,883 |
| Fees for Services Accounting | - | $32,167 | - | $32,167 |
| Advertising | $27,854 | - | - | $27,854 |
| Office Expenses | - | $20,652 | - | $20,652 |
| Insurance | $8,632 | $6,153 | $2,590 | $17,375 |
| Depreciation Depletion | $8,136 | $4,292 | $3,410 | $15,838 |
| Pension Plan Contributions | $7,707 | $4,070 | $3,240 | $15,017 |
| Other Expenses | $10,746 | $19,262 | $22,925 | $10,746 |
| Travel | - | $3,573 | - | $3,573 |
| Total Functional Expenses | $961,437 | $427,229 | $173,076 | $1,561,742 |
| Line Item | Amount |
|---|---|
| Total Expenses per Form 990 | $1,561,742 |
| Expenses per Audited Statements | $1,450,311 |
| Total Expenses per Audited Statements | $1,450,311 |
| Expenses Not Reported on Financial Statements | $111,431 |
| Expenses Not Reported on Form 990 | $0 |
| Line Item | Amount |
|---|---|
| Fundraising Direct Expenses | $126,738 |
| Fundraising Gross Income | $42,875 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Annual Gala/friends Festival | $253,566 | $42,875 | $126,738 | $-83,863 |
| Total Events | $253,566 | $42,875 | $126,738 | $-83,863 |
| Interested Party | Relationship | Description | Shared Revenue | Amount |
|---|---|---|---|---|
| - | This Entity Is Owned by a Board Member | Rental Expense | No | $51,288 |
“Electronic copy of form 990 provided to board members for their comments prior to submission of form to irs.”
“Checklists given to the members to complete annually.”
“Electronic copy of form 990 provided to board members for their comments prior to submission of form to the irs.”
“Not made separately available to the public.”
“The council is the grantee of conservation restrictions on certain parcels of land for the purpose of preserving them, in perpetuity, in their scenic, undeveloped, open condition. Conservation restrictions are recorded at cost, if purchased. Donated conservation restrictions are not recorded in the financial statements as there is no objective basis to determine their fair value.”
“The council's endowment consists of a board designated endowment fund established to support the various programs and projects that further the mission of the council. The fund is professionally managed and invested in a diversified portfolio to balance preservation of principal and total return. Asset allocations are regularly reviewed by an investment committee of the board of directors. The council has adopted spending policies for its endowment assets that attempt to provide a predictable stream of funding for its programs while seeking to maintain the purchasing power of the endowment assets. Under this policy, the board establishes a budgeted appropriation amount for expenditure during the year. Additional appropriations are approved by the board of directors as needed for operations or special projects.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | 1 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 12747 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 33484 |
| IRS990/AcctCompileOrReviewBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | PROTECT NANTUCKET'S NATURAL WORLD AND RURAL CHARACTER BY HOLDING AND ENFORCING CONSERVATION RESTRICTIONS, COMMISSIONING SCIENTIFIC RESEARCH, MONITORING DEVELOPMENT PROPOSALS, ENGAGING IN LEGAL PROCEEDINGS TO PROTECT NATURAL RESOURCES, AND EDUCATING THE PUBLIC ON LOCAL ENVIRONMENTAL ISSUES. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 27854 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 27854 |
| IRS990/AllOtherContributionsAmt | 0 | 954783 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | EMILY MOLDEN |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 5082282818 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | PO BOX 502 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | NANTUCKET |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 02554 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 1 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 38463 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 76296 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 76926 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 191685 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 1 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContriRptFundraisingEventAmt | 0 | 210691 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1165474 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 769790 |
| IRS990/CYOtherExpensesAmt | 0 | 903989 |
| IRS990/CYOtherRevenueAmt | 0 | -64162 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 309360 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 657753 |
| IRS990/CYTotalExpensesAmt | 0 | 1561742 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 173076 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 1871102 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 3410 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 4292 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 8136 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 15838 |
| IRS990/Desc | 0 | ENVIRONMENTAL PROTECTION AND PRESERVATION OF OPEN SPACE ON NANTUCKET THROUGH MONITORING OF THE EFFECTS OF DEVELOPMENT, RESEARCH, SCIENTIFIC STUDY AND EDUCATIONAL PROGRAMS. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 502810 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 554579 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 10 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 961437 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 32167 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 32167 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 170537 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 170537 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 111431 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 111431 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 21 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 22 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 23 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 24 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 25 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 26 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 27 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 28 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 29 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 18 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 19 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 20 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 21 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 22 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 23 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 24 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 25 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 26 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 27 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 28 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 25 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 26 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 27 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 28 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 29 | 21957 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | EVAN JONES |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | ANNALISE NELSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | LUCY LESKE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | MATT LIDDLE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | WILLIAM WILLET |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | LAUREL RIED LANGWORTHY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | SUSAN E ROBINSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | MATT ANDERSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | SUSAN BAER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | MARY-RANDOLPH BALLINGER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | WILLIAM BRENIZER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | THOMAS V FARRELL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | ROBERT FRIEDMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | NANCY GILLESPIE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | NATHANIEL GREENE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | MATT HAFFENREFFER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | CHARLES A KILVERT III |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | MICHELLE CARVIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | ROBERT P LYONS JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | KELTIE DONELAN MCDONALD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | PETER MCCAUSLAND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | ALAN NATHAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 22 | CHARLES PLATT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 23 | AMY ROWLAND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 24 | CARL H SJOLUND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 25 | H BROOKS SMITH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 26 | LARS SODERBERG |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 27 | DAVID TROAST |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 28 | HELEN WEEKS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 29 | EMILY MOLDEN |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 25 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 26 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 27 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 28 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 29 | 191424 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 25 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 26 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 27 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 28 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 29 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | CLERK |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 24 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 25 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 26 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 27 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 28 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 29 | EXECUTIVE DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1974 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 210691 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 126738 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 42875 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 276829 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 29 |
| IRS990/GrantAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 4001565 |
| IRS990/GrossReceiptsAmt | 0 | 5722576 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 19701 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 29 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 27929 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 4954 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 32883 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 2590 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 6153 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 8632 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 17375 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 492961 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 492961 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 16269628 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 18793202 |
| IRS990/IRPDocumentCnt | 0 | 23 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 344304 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 638644 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 622806 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 967110 |
| IRS990/LegalDomicileStateCd | 0 | MA |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 3724736 |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 0 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | PROTECT NANTUCKET'S NATURAL WORLD AND RURAL CHARACTER BY HOLDING AND ENFORCING CONSERVATION RESTRICTIONS, COMMISSIONING SCIENTIFIC RESEARCH, MONITORING DEVELOPMENT PROPOSALS, ENGAGING IN LEGAL PROCEEDINGS TO PROTECT NATURAL RESOURCES, AND EDUCATING THE PUBLIC ON LOCAL ENVIRONMENTAL ISSUES. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NameChangeInd | 0 | X |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 40277046 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 42672893 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 276829 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 276829 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -83863 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -83863 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 19701 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 19701 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 2086487 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 39774236 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 42118314 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 2232 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 23502 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 91385 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 117119 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 20652 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 20652 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 23169585 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 23148721 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 16514 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 20744 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 39281 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 76539 |
| IRS990/OtherExpensesGrp/Desc | 0 | PROGRAM SERVICES |
| IRS990/OtherExpensesGrp/Desc | 1 | PR & EDUCATION |
| IRS990/OtherExpensesGrp/Desc | 2 | MISCELLANEOUS |
| IRS990/OtherExpensesGrp/Desc | 3 | RESEARCH |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 22925 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 19262 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 228792 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 72835 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 10746 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 228792 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 72835 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 42187 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 10746 |
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