Data update history
January 22, 2024
Posted financials
Added Form 990PF for fiscal year 2022
January 22, 2024
Updated personnel
Identified 2 new personnel
August 7, 2023
Posted financials
Added Form 990PF for fiscal year 2021
July 8, 2023
Updated personnel
Identified 1 new personnel
June 21, 2023
Posted financials
Added Form 990PF for fiscal year 2020
Nonprofit Types
Grantmaking organizationsPrivate foundationsPrivate non-operating foundationsCharities
Issues
Arts, cultural, and humanitiesLand and water conservationEnvironment
Characteristics
Provides grantsPartially liquidatedState / local levelTax deductible donations
General information
- Address
- 336 Bon Air Ctr 384
- Greenbrae, CA 94904
- Metro area
- San Francisco-Oakland-Berkeley, CA
- County
- Marin County, CA
- Website URL
- opsociety.org/
- Phone
- (415) 236-0686
IRS details
- EIN
- 20-3570498
- Fiscal year end
- December
- Taxreturn type
- Form 990-PF
- Year formed
- 2005
- Eligible to receive tax-deductible contributions (Pub 78)
- Yes
Categorization
- NTEE code, primary
- T20: Private Foundations
- NAICS code, primary
- 813211: Grantmaking Foundations
- Parent/child status
- Independent
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