Public Charity

PENINSULA OPEN SPACE TRUST

PENINSULA OPEN SPACE TRUST, of PALO ALTO, CA, is a Public Charity tracked in Imperigo's IRS 990 database. The 2025 filing shows $62.3M in revenue, $43.4M in expenses, $373.8M in total assets. 166 publicly reported grants to this organization, totaling roughly $38.1M, appear in IRS filings.

EIN: 942392007 PALO ALTO, CA Environmental Beautification NTEE: C50 Latest filing: 2025
Total Revenue$62.3M
Total Expenses$43.4M
Total Assets$373.8M
Grant Records166
Funding Total$38.1M
Filing Years2021–2025

Mission

POST PROTECTS OPEN SPACE ON THE PENINSULA AND IN THE SOUTH BAY FOR THE BENEFIT OF ALL. POST IS CREATING A NETWORK OF PROTECTED LANDS WHERE PEOPLE AND NATURE CONNECT AND THRIVE. THESE LANDS ARE PRESERVED FOREVER SO PRESENT AND FUTURE GENERATIONS BENEFIT FROM THE CAREFUL... BALANCE OF RURAL AND URBAN LANDSCAPES THAT MAKE OUR REGION EXTRAORDINARY.

Officers & Directors

DIRECTOR Alisa Macavoy
DIRECTOR Andrew Bosworth
SECRETARY Brad O'brien
DIRECTOR Dennis Debroeck
CHIEF TALENT OFFICER Diane Cordova
DIRECTOR Emerick Woods

Officer compensation and complete director data available with membership.

Top Grant Purposes

ENVIRONMENTAL AND ANIMALS
$12,256,579 7 grants
For grant recipient's exempt purposes
$9,043,011 9 grants
Environment
$3,703,074 8 grants
ENVIRONMENT
$2,406,612 7 grants
GENERAL SUPPORT
$1,981,454 18 grants

Financial Trends

Year Revenue Expenses Assets
2025 $62.3M $43.4M $373.8M
2024 $30.3M $33.9M $339.3M
2023 $24.8M $29.0M $337.0M
2022 $30.2M $19.3M $318.8M
2021 $38.7M $23.3M $340.6M

Between 2021 and 2025, reported annual revenue grew from $38.7M to $62.3M (+61%), with total assets most recently reported at $373.8M.

Interactive year-over-year charts and full filing details available with membership.

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