Nonprofit · EIN 23-7259355
FRIENDS OF PRINCETON OPEN SPACE
Tax-exempt · PRINCETON, NJ 08542
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $296,157 | $313,534 | -$17,377 | $3,789,204 | $52,944 | $3,736,260 |
| June 30, 2024 | 990 | $279,533 | $202,352 | $77,181 | $3,788,945 | $35,441 | $3,753,504 |
| June 30, 2023 | 990 | $726,117 | $201,670 | $524,447 | $3,705,012 | $28,831 | $3,676,181 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $293,767
- Program service revenue
- $0
- Investment income
- $2,390
- Net gain from sales of assets
- -$101
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Other salaries and wages
- $148,233
- Salaries, compensation and benefits (total)
- $164,461
- Professional fundraising fees
- $0
- Accounting fees
- $13,106
- Occupancy
- $7,200
- Depreciation
- $200
- Program services (functional)
- $254,892
- Management and general (functional)
- $58,642
Balance sheet and other
- Total assets, start of year
- $3,788,945
- Total assets, end of year
- $3,789,204
- Total liabilities, end of year
- $52,944
- Net assets, end of year
- $3,736,260
- Land, buildings and equipment
- $2,922,250
- Publicly traded securities
- $55,558
- Net assets without donor restrictions
- $3,166,398
- Net assets with donor restrictions
- $569,862
- Gross receipts
- $352,331
- Employees
- 7
- Volunteers
- 900
- Year formed
- 1969
- State of legal domicile
- NJ
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended June 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| NASIM ALI | TRUSTEE Trustee or director | 1 | $0 |
| JESSICA ATKINS | TRUSTEE Trustee or director | 1 | $0 |
| PETER GREEN | TRUSTEE Trustee or director | 1 | $0 |
| ANDREA HONORE | TRUSTEE Trustee or director | 1 | $0 |
| FREDERICK BIGELOW JR | TREASURER Trustee or director, Officer | 5 | $0 |
| HAYDEN SMITH JR | TRUSTEE Trustee or director | 1 | $0 |
| LIZ LEMPERT | TRUSTEE Trustee or director | 1 | $0 |
| CLARK LENNON | VICE-PRESIDE Trustee or director, Officer | 10 | $0 |
| ANNARIE LYLES | TRUSTEE Trustee or director | 1 | $0 |
| SCOTIA MACRAE | TRUSTEE Trustee or director | 1 | $0 |
| WENDY L MAGER | PRESIDENT Trustee or director, Officer | 10 | $0 |
| FRAN MCMANUS | TRUSTEE Trustee or director | 1 | $0 |
| DANA MOLINA | TRUSTEE Trustee or director | 1 | $0 |
| DIANA NEWBY | TRUSTEE Trustee or director | 1 | $0 |
| HILARY PERSKY | SECRETARY Trustee or director, Officer | 10 | $0 |
7 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| GEORGE POINT | TRUSTEE (JUL Trustee or director | 1 | $0 |
| THOMAS E SCHORR | TRUSTEE Trustee or director | 4 | $0 |
| WINIFRED HUGHES SPAR | TRUSTEE Trustee or director | 1 | $0 |
| RUKSHANA TARAPOREWALA | TRUSTEE Trustee or director | 1 | $0 |
| ERIC TAZELAAR | TRUSTEE Trustee or director | 1 | $0 |
| MICHAEL TIMMONS | TRUSTEE Trustee or director | 1 | $0 |
| ROBERT VON ZUMBUSCH | VICE-PRESIDE Trustee or director, Officer | 10 | $0 |
990 for the year ended June 30, 2024: 21 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| NASIM ALI | ASST. TREASU Trustee or director, Officer | 1 | $0 |
| JESSICA ATKINS | TRUSTEE Trustee or director | 1 | $0 |
| PETER GREEN | TRUSTEE Trustee or director | 1 | $0 |
| FREDERICK BIGELOW JR | TREASURER Trustee or director, Officer | 5 | $0 |
| HAYDEN SMITH JR | TRUSTEE Trustee or director | 1 | $0 |
| ROBERT KISER | TRUSTEE (JUL Trustee or director | 1 | $0 |
| LIZ LEMPERT | TRUSTEE Trustee or director | 1 | $0 |
| CLARK LENNON | VICE-PRESIDE Trustee or director, Officer | 10 | $0 |
| ANNARIE LYLES | TRUSTEE Trustee or director | 1 | $0 |
| SCOTIA MACRAE | TRUSTEE Trustee or director | 1 | $0 |
| WENDY L MAGER | PRESIDENT Trustee or director, Officer | 10 | $0 |
| FRAN MCMANUS | TRUSTEE Trustee or director | 1 | $0 |
| HILARY PERSKY | SECRETARY Trustee or director, Officer | 1 | $0 |
| GEORGE POINT | TRUSTEE Trustee or director | 1 | $0 |
| THOMAS E SCHORR | TRUSTEE Trustee or director | 5 | $0 |
| WINIFRED HUGHES SPAR | TRUSTEE Trustee or director | 1 | $0 |
| RUKSHANA TARAPOREWALA | TRUSTEE Trustee or director | 1 | $0 |
| ERIC TAZELAAR | TRUSTEE Trustee or director | 1 | $0 |
| MICHAEL TIMMONS | TRUSTEE Trustee or director | 1 | $0 |
| LEE VARIAN | TRUSTEE (JUL Trustee or director | 1 | $0 |
| ROBERT VON ZUMBUSCH | VICE-PRESIDE Trustee or director, Officer | 10 | $0 |
990 for the year ended June 30, 2023: 22 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| NASIM ALI | ASST. TREASU Trustee or director, Officer | 1 | $0 |
| JESSICA ATKINS | TRUSTEE Trustee or director | 1 | $0 |
| STEVE ATKINSON | TRUSTEE (JUL Trustee or director | 1 | $0 |
| KATHLEEN M BAGLEY | TRUSTEE (JUL Trustee or director | 1 | $0 |
| RONALD BERLIN | TRUSTEE (JUL Trustee or director | 1 | $0 |
| PETER GREEN | TRUSTEE Trustee or director | 1 | $0 |
| FREDERICK BIGELOW JR | TREASURER Trustee or director, Officer | 5 | $0 |
| ROBERT KISER | TRUSTEE Trustee or director | 1 | $0 |
| LIZ LEMPERT | TRUSTEE Trustee or director | 1 | $0 |
| CLARK LENNON | VICE-PRESIDE Trustee or director, Officer | 10 | $0 |
| ANNARIE LYLES | TRUSTEE Trustee or director | 1 | $0 |
| SCOTIA W MACRAE | TRUSTEE (JUL Trustee or director | 1 | $0 |
| WENDY MAGER | PRESIDENT Trustee or director, Officer | 10 | $0 |
| FRAN MCMANUS | TRUSTEE Trustee or director | 1 | $0 |
| HILARY PERSKY | ASSISTANT SE Trustee or director, Officer | 1 | $0 |
| GEORGE POINT | TRUSTEE Trustee or director | 2 | $0 |
| THOMAS E SCHORR | TRUSTEE Trustee or director | 2.5 | $0 |
| WINIFRED HUGHES SPAR | TRUSTEE Trustee or director | 1 | $0 |
| ERIC TAZELAAR | TRUSTEE Trustee or director | 1 | $0 |
| MICHAEL TIMMONS | TRUSTEE Trustee or director | 1 | $0 |
| LEE C VARIAN | TRUSTEE Trustee or director | 1 | $0 |
| ROBERT VON ZUMBUSCH | VICE-PRESIDE Trustee or director, Officer | 10 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 374, PRINCETON, NJ 08542-0374
- Principal officer (990 for 2024)
- WENDY L MAGER, 57 MOUNTAIN AVENUE, PRINCETON, NJ 08540
- Signed the 990
- WENDY L MAGER, PRESIDENT
- Phone
- (609) 921-2772
- Website
- WWW.FOPOS.ORG
- Return prepared by
- HAMILTON MERCER ADVISORS
Mission
IN 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.
Program accomplishments
- FRIENDS 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.Expenses $147,921
- FRIENDS 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.Expenses $15,929
- FRIENDS 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.Expenses $91,042
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990 on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990 on file |
IRS record
- EIN
- 23-7259355
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1983
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Environment (C500)
- Assets (IRS master file)
- $3,789,204
- Income (IRS master file)
- $352,331
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $296,157 | $313,534 | $3,789,204 | IRS |
| 990 | June 2024 | $279,533 | $202,352 | $3,788,945 | XML |
| 990 | June 2023 | $726,117 | $201,670 | $3,705,012 | XML |
| 990 | June 2022 | $219,356 | $174,599 | $3,184,115 | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990 | June 2020 | – | – | – | IRS |
| 990 | June 2019 | – | – | – | IRS |
| 990 | June 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 23-7259355).
Questions about FRIENDS OF PRINCETON OPEN SPACE
- What is the EIN of FRIENDS OF PRINCETON OPEN SPACE?
- The employer identification number (EIN) of FRIENDS OF PRINCETON OPEN SPACE is 23-7259355.
- Is FRIENDS OF PRINCETON OPEN SPACE tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1983.
- Are donations to FRIENDS OF PRINCETON OPEN SPACE tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does FRIENDS OF PRINCETON OPEN SPACE file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of FRIENDS OF PRINCETON OPEN SPACE due?
- The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did FRIENDS OF PRINCETON OPEN SPACE last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended June 2025.
- Who is the principal officer of FRIENDS OF PRINCETON OPEN SPACE?
- The 990 for the year ended June 30, 2025 names WENDY L MAGER.
- Who are the officers and directors of FRIENDS OF PRINCETON OPEN SPACE?
- The 990 for the year ended June 30, 2025 lists 22 people; 0 received compensation from the organization.
- How much revenue does FRIENDS OF PRINCETON OPEN SPACE have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $296,157, expenses of $313,534 and total assets of $3,789,204 at year end.
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