Marital Subtrust Ot - Williams Rev Tr/2 Dtd 9/1/1998
Invitation OnlySan Diego, California · EIN 46-6390566 · Private foundation
Grants paid (2025)$400K
Organizations funded11
Typical grant$25,000
Total assets$6.5M
Half of its grants to organizations were between $25,000 and $40,000.
From the return
How to apply
On its return for tax year 2025 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
54% of grants went outside California.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Abc Youth Fdn | San Diego, CA | General charitable purposes | $100,000 |
| Aloha Tree Alliance | Honolulu, HI | General charitable purposes | $75,000 |
| Sdabl Charity for Kids | San Diego, CA | General charitable purposes | $40,000 |
| Lincoln Center Theater | New York, NY | General charitable purposes | $25,000 |
| Jupiter Hills Comm Fdn | Tequesta, FL | General charitable purposes | $25,000 |
| San Diego Humane Society | San Diego, CA | General charitable purposes | $25,000 |
| Living Roots Initiative | Honolulu, HI | General charitable purposes | $25,000 |
| Uh Foundation | Honolulu, HI | General charitable purposes | $25,000 |
| San Diego Food Bank | San Diego, CA | General charitable purposes | $25,000 |
| San Diego Symphony | San Diego, CA | General charitable purposesgeneral charitable purposesgeneral charitable purposes | $25,000 |
| Preservation League of NY | Albany, NY | General charitable purposes | $10,000 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $400,000 | 11 |
| 2024 | $505,000 | 6 |
| 2023 | $1,135,000 | 5 |
Sources
- IRS Form 990-PF, tax year 2025, filed Sep 10, 2026 - IRS e-file batch, object ID 202632539349100423
- IRS Tax Exempt Organization Search for EIN 46-6390566
- Profile updated Nov 6, 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.