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.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$23.3M
+15.5% YoY
Annual Giving
$578K
-82.3% YoY
Grant Count
19
+35.7% YoY
Avg Grant Size
$30K
-87.0% YoY
About Open Space Institute Inc
Based on IRS filings
Open Space Institute Inc is a nonprofit organization focused on Environment & Animals, based in NEW YORK, NY. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $23.3M in total assets. In 2024, it awarded 19 grants totaling $578K. Net investment income was $457K.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $23,289,878 | $20,160,830 | $10,990,806 |
| Revenue | $6,858,272 | $5,880,714 | $2,141,539 |
| Expenses | $3,655,960 | $6,178,116 | $1,715,812 |
| Qualifying Distributions | — | — | — |
| Net Investment Income | $457,365 | $254,664 | $273,720 |
| Distributable Amount | — | — | — |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
Grant Size Distribution
65 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for .
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2024 IRS filing
From 2024 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| AMELIA SALZMAN | CO-CHAIRPERSON OF THE BOARD | 3 | — |
| ANSON FRELINGHUYSEN | MEMBER | 1 | — |
| CAROL ASH | VICE-CHAIRPERSON OF THE BOARD | 1 | — |
| CAROLYN NIEMCZYK | MEMBER | 1 | — |
| DALE S BRYK | MEMBER | 1 | — |
| DOUGLAS BATESON | MEMBER | 1 | — |
| ELIZABETH BORDEN | MEMBER | 1 | — |
| GIGI MORTIMER | MEMBER | 1 | — |
| GIORGIOS VLAMIS | MEMBER | 1 | — |
| HOLLY HEGENER | MEMBER | 1 | — |
| HUME R STEYER | SECRETARY | 1 | — |
| JOHN ERNST | MEMBER | 1 | — |
| JOHN H ADAMS | CO-CHAIR OF THE BOARD (OUTGOING) | 3 | — |
| JOHN P CAHILL | MEMBER | 1 | — |
| JOSHUA GINSBERG PHD | MEMBER | 1 | — |
| JUDE WU ABEL | MEMBER | 1 | — |
| KATHERINE O ROBERTS | MEMBER | 1 | — |
| LEA PAINE HIGHET | MEMBER | 1 | — |
| LEISLE LIN | MEMBER | 1 | — |
| MARJORIE VAN DERCOOK | MEMBER | 1 | — |
| NICOLE HYLTON-PATTERSON | MEMBER | 1 | — |
| PATRICIA F SULLIVAN | MEMBER | 1 | — |
| RICHARD REMMER | MEMBER | 1 | — |
| SAMUEL G HUBER | MEMBER | 1 | — |
| SUSAN BABCOCK | MEMBER | 1 | — |
| T JEFFERSON CUNNINGHAM III | MEMBER | 1 | — |
| THOMAS MCHENRY | MEMBER | 1 | — |
| YUKI MOORE LAURENTI | MEMBER | 1 | — |
| ABIGAIL WEINBERG | VP OF SCIENCE & CONSERVATION POLICY | 2 | $171,040 |
| ALICE GLEASON | SVP FOR FINANCE & CFO | 2 | $264,789 |
| CHRISTOPHER J ELLIMAN | PRESIDENT & CEO (OUTGOING 05/24) | 2 | $317,173 |
| DAVID KIERAN-KAUFMAN | VICE PRESIDENT AND ASSISTANT GENERAL COUNSEL | 2 | $167,900 |
| EILEEN LARABEE | CHIEF EXTERNAL AFFAIRS OFFICER | 2 | $312,955 |
| IRENE LEE | VP OF LAND, NORTHEAST | 2 | $172,418 |
| JEFFREY LEJAVA | VICE PRES. & ASSOCIATE GEN. COUNSEL | 2 | $229,264 |
| JENNIE GREER | SVP OF PHILANTHROPY | 2 | $222,219 |
| JESSICA WATSON | VP OF CONSERVATION COMMUNITIES | 2 | $139,282 |
| KATHLEEN MOSER | CHIEF CONSERVATION/POLICY | 2 | $276,027 |
| LARS KULLESEID | PRESIDENT & CEO (INCOMING 04/24) | 2 | $354,094 |
| MARIA WHITEHEAD | VP OF LAND, SOUTHEAST | 2 | $213,119 |
| MAY MAY CHENG | VICE PRESIDENT, CONTROLLER | 2 | $158,698 |
| NATHAN BERRY | CHIEF LAND, PROTECTION OFFICER | 2 | $357,268 |
| NICK RICHARDSON | SVP, CAPITAL STRATEGIES | 2 | $210,480 |
| PETER KARIS | VP, PARKS AND STEWARDSHIP | 2 | $183,679 |
| ROBERT K ANDERBERG | SVP, GENERAL COUNSEL | 2 | $248,235 |
| SAMAYLA DEUTCH | SVP, GENERAL COUNSEL | 2 | $270,153 |
| TALLY BLUMBERG | EXECUTIVE VICE PRESIDENT | 2 | $353,363 |
| BRADFORD BURNS | STAFF ATTORNEY | 2 | $170,370 |
| LESLEY KANE SZYNAL | DIRECTOR OF OUTDOORS AMERICA | 2 | $318,451 |
| MELANIE GRIFFIN | SR. DIR OF INSTITUTIONAL GIVING | 2 | $143,492 |
| MICHAEL BADEN | SR. DIR OF ADMINISTRATION | 2 | $145,112 |
| REBEKAH GERARD | SR. DIR OF ADMIN (OUTGOING 12/24) | 2 | $201,968 |
Subject Areas
Focus areas based on grantmaking activity
Related Funders
Similar funders by location and focus area
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Data last updated April 2026. Sourced from IRS Form 990-PF filings.
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