GrantAuthority

C S Fund

Grantmaking foundation in Petaluma, California · EIN 95-3607882

Grants itemized on the 990
$9.6MTax year 2025
Grants made
101Tax year 2025
Total assets
$6.7MLatest reported
Latest IRS filing
2025Form 990 / 990-PF

Giving by year

$1.6M2019
$1.9M2020
$2.9M2021
$4.2M2022
$4.6M2023
$7.1M2024
$9.6M2025

Totals by tax year, rounded to two significant figures. Years without a reported total show the sum of grants itemized on the filing.

Top recipients

RecipientAmountTax year
Friends of Action Group on Erosion Technology and Concentration Inc$1.6M2025
Tides Foundation$1.2M2025
Center for the Study of the Americas$350K2025
Center for International Environmental Law$310K2025
Indigenous Environmental Network$300K2025

Amounts are rounded. The full grantee list (101 grants in 2025) is available with a free account.

Website: csfund.net

See the full profile. All grants with amounts and years, board and officers, contact details, giving patterns and your organization's fit score are available with a free GrantAuthority account.

Similar foundations in California

Source: IRS Form 990 and 990-PF filings, tax year 2025. Also see this organization on ProPublica Nonprofit Explorer.