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.
Public Charity
OPEN SPACE INSTITUTE INC
OPEN SPACE INSTITUTE INC is a Public Charity headquartered in NEW YORK, NY. Financial data from the 2024 filing: $6.9M revenue, $3.7M expenses, $23.3M total assets. 125 publicly reported grants to this organization, totaling roughly $10.4M, appear in IRS filings.
EIN: 521053406
NEW YORK, NY
Natural Resources Conservation & Protection
NTEE: C30
Latest filing: 2024
Total Revenue$6.9M
Total Expenses$3.7M
Total Assets$23.3M
Grant Records125
Funding Total$10.4M
Filing Years2019–2024
Where $100 goes at Open Space Institute Inc
How Open Space Institute Inc divides every $100 it spends, from its own Form 990 filings, averaged across 7 years.
$80
Programs
the work itself
$9
Management
running the organization
$11
Fundraising
raising the next dollar
Inside the $80 for programs
$77
Conservation communities
$3
Through its supporting organization, the Open Space Institute land trust (osilt), osi saves land to protect water sources; create and make public land more inviting for all; maintain…
Source: Form 990 filings with the IRS, latest fiscal year 2024. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Sample Grants Received
SUPPORT LAND CONSERVATION AND STEWARDSHIP
$205,000
ENVIRONMENT & ANIMAL PROTECTION
$33,250
FIGHT HUNGER
$20,000
ENVIRONMENTAL AND ANIMALS
$134,425
GENERAL OPERATING SUPPORT
$92,762
Showing up to 5 of 125 total records — full history available with membership.
Officers & Directors
VP OF SCIENCE & CONSERVATION POLICY
Abigail Weinberg
SVP FOR FINANCE & CFO
Alice Gleason
CO-CHAIRPERSON OF THE BOARD
Amelia Salzman
MEMBER
Anson Frelinghuysen
STAFF ATTORNEY
Bradford Burns
VICE-CHAIRPERSON OF THE BOARD
Carol Ash
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2024 | $6.9M | $3.7M | $23.3M |
| 2023 | $5.9M | $6.2M | $20.2M |
| 2022 | $2.1M | $1.7M | $11.0M |
| 2020 | $1.7M | $2.0M | $8.7M |
| 2019 | $2.9M | $2.3M | $9.1M |
Between 2019 and 2024, reported annual revenue grew from $2.9M to $6.9M (+134%), with total assets most recently reported at $23.3M.
Interactive year-over-year charts and full filing details available with membership.