Updated Oct 30, 2026
Private foundations based in San Marino, California
16 grantmaking foundations headquartered in San Marino, California, holding $399M in assets. Ranked by grants paid in their latest 990-PF; 3 on this page say they accept applications. For foundations ranked by where their grants went, see local funders.
| Foundation | Grants paid | Median grant | Accepts applications | Assets |
|---|---|---|---|---|
| Whh Foundationsince 2004 | $7.9M149 grants · 2024 | $15K | Preselected only | $166M |
| Thornton Foundation Delawaresince 2020 | $4.0M1 grants · 2025 | $4.0M | Preselected only | $93M |
| Silent Partner Grantssince 2016 | $2.5M32 grants · 2024 | $10K | Preselected only | $51M |
| Universal Sunlight Foundationsince 2009 | $1.1M7 grants · 2024 | $15K | Yes | $32M |
| Greenwood Foundation Charit Irrv Tr 121294since 1995 | $600K6 grants · 2024 | $65K | Preselected only | $15M |
| Christen C and Ben H Garret Familyfoundationsince 2007 | $520K21 grants · 2025 | $6,000 | Preselected only | $1.9M |
| Allan & Lalita Charitable Foundationsince 2009 | $456K40 grants · 2024 | $6,153 | Preselected only | $4.3M |
| Lam Yau Jong Charitable Foundationsince 2003 | $402K15 grants · 2025 | $15K | Preselected only | $14M |
| Kings Bridge Foundationsince 2007 | $160K1 grants · 2025 | $160K | Preselected only | $3.4M |
| Chapman Family Foundationsince 2000 | $142K10 grants · 2024 | $8,750 | Preselected only | $6.6M |
| The Negri Foundation a California Nonprofit Public Benefitsince 1991 | $138K21 grants · 2024 | $8,000 | Preselected only | $2.2M |
| Jeanne Ward Foundationsince 1982 | $98K13 grants · 2024 | $5,000 | Yes | $2.2M |
| George and Mary Ann Leal Foundationsince 1994 | $92K21 grants · 2025 | $1,500 | Preselected only | $1.5M |
| Duncan Great Cause Foundationsince 2020 | $78K14 grants · 2025 | $1,750 | Yes | $1.5M |
| D&g Charitable Foundationsince 2022 | $71K4 grants · 2024 | $15K | Preselected only | $3.4M |
| Lee Moy Family Foundationsince 2018 | $51K9 grants · 2024 | $3,000 | Preselected only | $1.0M |
Sources: IRS Business Master File (assets), ProPublica Nonprofit Explorer and IRS 990-PF e-file (grants paid, application policy). "Accepts applications" reflects the foundation's own Part XV checkbox.
Open grant programs in California
All 166| Deadline | Grant | Funder | Award ceiling |
|---|---|---|---|
| Oct 30tomorrow | 2026-27 Digital Divide Grant Program Round 4CaliforniaPublic Utilities Commission | Public Utilities Commission | Up to $100K |
| Oct 30tomorrow | Division of Boating and Waterways Aquatic Center Boating Safety Education Grant FY26CaliforniaDepartment of Parks and Recreation | Department of Parks and Recreation | Up to $62K |
| Oct 30tomorrow | LA County TECH (CEA-LAT) Grant – Round 3CaliforniaPublic Utilities Commission | Public Utilities Commission | Not listed |
| Oct 30tomorrow | Rice Incentive ProgramCaliforniaSacramento-San Joaquin Delta Conservancy | Sacramento-San Joaquin Delta Conservancy | Not listed |
| Nov 24 days | Local Highway Safety Improvement Program (HSIP)CaliforniaDepartment of Transportation | Department of Transportation | Up to $10M |
| Nov 24 days | Emergency Medical Services (EMS) Grant for Program Year 2026-27 (PY 26-27)CaliforniaEmployment Development Department | Employment Development Department | Up to $1.3M |
Common questions
How many private foundations are based in San Marino, California?
Our directory lists 16 private grantmaking foundations in San Marino, California with at least $1 million in assets, holding a combined $399M. The data comes from the IRS Exempt Organizations Business Master File and Form 990-PF.
How do I get a grant from a private foundation?
Start with foundations that already fund organizations like yours nearby. Read the grantee list on each profile, check whether the foundation accepts applications (it says so on its 990-PF), and lead with a short letter of inquiry. Many family foundations fund only organizations they already know; an introduction through a shared grantee or board member works better than a cold proposal.
Can you help us approach foundations?
Yes. Our grant writers research foundation prospects, write letters of inquiry, and build a foundation fundraising plan. Request a free consultation.