The Middleton Foundation
Invitation OnlySan Mateo, California · EIN 94-3117882 · Private foundation
Grants paid (2024)$784K
Organizations funded28
Typical grant$1,000
Total assets$18.6M
Half of its grants to organizations were between $1,000 and $5,000.
From the return
How to apply
On its return for tax year 2024 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.
Where it gives
44% of grants went outside California.
Grants paid in tax year 2024
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Silicon Valley Community Foundation Silicon Valley Community Foundation | Mountain View, CA | Charity | $500,000 |
| MIT (Eaps) MIT (Eaps) | Cambridge, MA | Charity | $100,000 |
| United States Olympic Committee United States Olympic Committee | Alberta Lea, MN | Charity | $75,000 |
| Opportunity International Opportunity International | Carol Stream, IL | Charity | $50,000 |
| Kyoto Prize Symposium Kyoto Prize Symposium | San Diego, CA | Charity | $10,000 |
| Science History Institute Science History Institute | Philadelphia, PA | Charity | $10,000 |
| Ananda Church Ananda Church | Palo Alto, CA | Charity | $5,000 |
| Harward University Gift Hawards University Gift | Cambridge, MA | Charity | $5,000 |
| Viewpoint School Viewpoint School | Calabasas, CA | Charity | $5,000 |
| James Beard Foundation James Beard Foundation | New York, NY | Charity | $4,000 |
| Rancho Sante Fe Rotary Rancho Sante Fe Rotary | Solana Beach, CA | Charity | $3,700 |
| Coalition to Salute Amer Coalition to Salute Amer | Wilton, CT | Charity | $2,000 |
| The Leakey Foundation the Leakey Foundation | San Francisco, CA | Charity | $2,000 |
| American School in London American School in London | London, UK | Charity | $1,000 |
| Ca Highway Patrol 11-99 Ca Highway Patrol 11-99 | Sacramento, CA | Charity | $1,000 |
| California State Parks Fnd California State Parks Fnd | San Francisco, CA | Charity | $1,000 |
| Damon Runyon Cancer Research Fnd Damon Runyon Cancer Research Fnd | New York, NY | Charity | $1,000 |
| Ocean Conservancy Ocean Conservancy | Santa Cruz, CA | Charity | $1,000 |
| Pollinator Partnership Pollinator Partnership | San Francisco, CA | Charity | $1,000 |
| San Mateo Public Library San Mateo Public Library | San Mateo, CA | Charity | $1,000 |
| Srf Fellowship Srf Fellowship | San Francisco, CA | Charity | $1,000 |
| Stanford (Hoover Institution) Stanford (Hoover Institution) | Stanford, CA | Charity | $1,000 |
| The Heritage Foundation the Heritage Foundation | Washington, DC | Charity | $1,000 |
| Commonwealth Club of Ca Commonwealth Club of Ca | San Francisco, CA | Charity | $600 |
| Filoli Filoli | Woodside, CA | Charity | $500 |
| Sg Komen for the Cure Sg Komen for the Cure | Dallas, TX | Charity | $400 |
| National Law Enforcement Officers M National Law Enforcement Officers Memorial Fund | Washington, DC | Charity | $200 |
| American Cornerstone Institute American Cornerstone Institute | Washington, DC | Charity | $100 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2024 | $783,500 | 28 |
| 2023 | $794,564 | 28 |
Sources
- IRS Form 990-PF, tax year 2024, filed Nov 17, 2025 - IRS e-file batch, object ID 202513219349103796
- IRS Tax Exempt Organization Search for EIN 94-3117882
- Profile updated Nov 7, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.