The Williamson Foundation
Invitation OnlySan Antonio, Texas · EIN 61-1805991 · Private foundation
Grants paid (2025)$75K
Organizations funded20
Typical grant$2,576
Total assets$2.6M
Half of its grants to organizations were between $1,037 and $4,000.
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
30% of grants went outside Texas.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Rancho Mirage Writers Festival | Rancho Mirage, CA | For the orgs charitable purposes | $20,000 |
| Texas Public Radio | San Antonio, TX | For the orgs charitable purposes | $10,325 |
| Freedom From Religion Foundation | Madison, WI | For the orgs charitable purposes | $6,198 |
| Briscoe Western Art Museum | San Antonio, TX | For the orgs charitable purposes | $5,149 |
| Mccallum Theatre | Palm Desert, CA | For the orgs charitable purposes | $5,000 |
| Klrn | San Antonio, TX | For the orgs charitable purposes | $4,000 |
| Opera San Antonio | San Antonio, TX | For the orgs charitable purposes | $3,090 |
| Propublica Publisher's Circle | New York, NY | For the orgs charitable purposes | $3,075 |
| Project Mend | San Antonio, TX | For the orgs charitable purposes | $2,630 |
| San Antonio Conservation Society Foundation | San Antonio, TX | For the orgs charitable purposes | $2,580 |
| San Antonio Botancial Garden | San Antonio, TX | For the orgs chartiable purposes | $2,576 |
| Texas Tribune | Austin, TX | For the orgs charitable purposes | $2,045 |
| Mcnay Art Museum | San Antonio, TX | For the orgs charitable purposes | $1,500 |
| The Witte Museum | San Antonio, TX | For the orgs charitable purposes | $1,200 |
| Wikimedia Foundation | San Francisco, CA | For the orgs chartiable purpose | $1,040 |
| Hemisfair Conservancy | San Antonio, TX | For the orgs charitable purposes | $1,037 |
| Green Spaces Alliance of South Texas | San Antonio, TX | For the orgs charitable purposes | $1,030 |
| San Antonio Museum of Art | San Antonio, TX | For the orgs charitable purposes | $1,000 |
| Texas State Historical Association | Austin, TX | For the orgs charitable purposes | $1,000 |
| Kansas University Endowment Foundation | Lawrence, KS | For the orgs charitable purposes | $500 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $74,975 | 20 |
| 2024 | $97,021 | 19 |
| 2023 | $85,315 | 20 |
Sources
- IRS Form 990-PF, tax year 2025, filed Aug 24, 2026 - IRS e-file batch, object ID 202642369349100514
- IRS Tax Exempt Organization Search for EIN 61-1805991
- 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.