Mission
Raise funds to acquire, restore, and protect open space and park lands in Marin County, California, and negotiate acquisitions of lands and conservation easements
Public Charity
MARIN OPEN SPACE TRUST
MARIN OPEN SPACE TRUST is a Public Charity headquartered in SAN RAFAEL, CA. Financial data from the 2025 filing: $128K revenue, $87K expenses, $687K total assets. 22 publicly reported grants to this organization, totaling roughly $2.1M, appear in IRS filings.
EIN: 262460667
SAN RAFAEL, CA
Latest filing: 2025
Total Revenue$128K
Total Expenses$87K
Total Assets$687K
Grant Records22
Funding Total$2.1M
Filing Years2021–2025
Sample Grants Received
For grant recipient's exempt purposes
$1,011,500
UNRESTRICTED
$58,378
ENVIRONMENTAL AND ANIMALS
$11,100
GENERAL SUPPORT
$6,149
ENVIRONMENT, ANIMALS
$6,000
Showing up to 5 of 22 total records — full history available with membership.
Officers & Directors
Secretary-Treasurer
Ann Thomas
Director
Don Dickenson
Vice Chair
Jonathan Braun
Director
Joyce Applen
Director
Kevin Knowles
Director
Steve Petterle
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $128K | $87K | $687K |
| 2024 | $1.4M | $1.6M | $646K |
| 2023 | $394K | $862K | $765K |
| 2022 | $1.2M | $223K | $1.2M |
| 2021 | $64K | $52K | $212K |
Between 2021 and 2025, reported annual revenue grew from $64K to $128K (+100%), with total assets most recently reported at $687K.
Interactive year-over-year charts and full filing details available with membership.