New York · Nonprofit
OPEN SPACE INSTITUTE INC
OPEN SPACE INSTITUTE INC (New York) receives grants from 187 organizations whose IRS filings report $33,716,811 to it, the largest being NATIONAL PHILANTHROPIC TRUST ($4,955,958). 105 of them have funded it in more than one year.
- Revenue FY2024
- $6.9M
- Funders on record
- 187
- Grants received
- $34M
- Net assets
- $7.5M
What Open Space Institute Inc does
Mission
Osi protects land for clean drinking water, public recreation, healthy communities, and wildlife habitat; and to conserve intact forests and floodplains that capture and store carbon and protect against increasingly dangerous weather events.
As stated on its FY2024 Form 990.
Programs
Conservation communities: osi supports grassroots organizations and promotes the development of young environmental leaders to broaden representation within the field of conservation. Its citizen action initiative supports newly formed local environmental and urban park groups. The malcolm gordon charitable fund awards grants to nonprofits in urban hudson valley communities, while the geographic and mission aligned barnabas mchenry hudson river valley awards provide grants to students who are actively working to improve their local communities. Likewise, osi's conservation diversity fellowship promotes greater diversity within the environmental field by providing recent students salaried, two-year fellowships at osi to launch their careers.
$5,052,204 spentof which $3,239,647 as grants$368,837 earned by the program99% of program spendingOsi saves land to protect water sources; create and make parks more welcoming; fight climate change; provide wildlife habitat; and strengthen communities through its supporting organization, the open space institute land trust (osilt). Working across the eastern seaboard, osilt achieves these goals through facilitated largescale conservation projects; direct acquisition and conservation easements; grants and loans aimed at protecting water quality, habitat, and lands that safeguard wildlife and communities in a changing climate. In 2023, osilt protected 15,000 acres with a fair value of $141 million and made 22 capital grants totaling $2.7 million, protecting 14,300 acres in five states with a fair value of $20 million. Further, osi directly approved 14 grants for conservationplanning totaling $230,000.
$66,477 spentof which $66,477 as grants1% of program spending
The 2 programs described on its FY2023 Form 990, listed largest first by expense. Program spending in total: $5,118,681.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2022 to 2023, from $11M to $20M (+83%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2017 0% · 2019 1% · 2021 1% · 2023 1% · 2024 0%. Grants only. Government contracts and fees sit inside program revenue.
90% of OPEN SPACE INSTITUTE INC’s revenue is contributions — more donation-reliant than the typical peer (88% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 8 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
The chief executive listed changed between the FY2023 and FY2024 filings.
Who funds it, year by year
2017 → 2023: the base broadened from 33 funders to 74 funders, grant income rose $1.4M → $3.3M.
26 of 187 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 25% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
Left out of every figure on this page: $464k from one payer (the payer shares this organization's board, largest Open Space Institute Land Trust Inc). These are real filings, and they are not money OPEN SPACE INSTITUTE INC raised.
From the IRS filings of OPEN SPACE INSTITUTE INC’s funders (the co-funder graph). Top 30 of 187 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
OPEN SPACE INSTITUTE INC has a broad base — no single funder exceeds 15% of grant income, and it takes 5 funders to reach half.
the vertical line marks half of all grant income — 5 funders to its left
29% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund OPEN SPACE INSTITUTE INC.
Largest funder’s share by year: 2017 31% · 2018 29% · 2019 20% · 2020 52% · 2021 24% · 2022 21% · 2023 29% — broadly stable.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
41% of OPEN SPACE INSTITUTE INC's funders are still giving 3 years after their first grant; 56% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
OPEN SPACE INSTITUTE INC draws 67% of its grant income from funders outside New York, across 29 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $8.4M arriving through sponsors registered in 15 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
OPEN SPACE INSTITUTE INC runs a healthier operating margin than three-quarters of the 2,187 environment nonprofits its size.
this organization peer median middle 50% of peers· 2,187 environment nonprofits $1M–$10M, FY2024
Government funding OPEN SPACE INSTITUTE INC receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $40k on record.
- APPRAISAL/SURVEY SERVICES $30k
- RESEARCH SERVICES - GENERAL $9k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like OPEN SPACE INSTITUTE INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In New York
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
60% of spending goes to programs.
Governance
Public support
85%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 36 states
Part of a family of 2 related entities
- Open Space Institute Land Trust Inc · exempt
- Strategic Conservation Partners LLC · partnership
Screen this organization
A dated, signed PDF of the compliance screen for OPEN SPACE INSTITUTE INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds OPEN SPACE INSTITUTE INC?
- OPEN SPACE INSTITUTE INC (New York) receives grants from 187 organizations whose IRS filings report $33,716,811 to it, the largest being NATIONAL PHILANTHROPIC TRUST ($4,955,958). 105 of them have funded it in more than one year.
- How many funders does OPEN SPACE INSTITUTE INC have?
- IRS filings report 187 organizations giving $33,716,811 in grants to OPEN SPACE INSTITUTE INC, 105 of which have funded it in more than one year.
- Who is the largest funder of OPEN SPACE INSTITUTE INC?
- NATIONAL PHILANTHROPIC TRUST is the largest funder on record, with $4,955,958 in grants. The full list of funders is on this page.
- How can an organization like OPEN SPACE INSTITUTE INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New York. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 187 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 22, 2026. What this page cannot tell you · view filing