William Knox Holt Foundation
Historical FunderSan Antonio, Texas · EIN 74-6084245 · Private foundation
Grants paid (2024)$336K
Organizations funded24
Typical grant$10,000
Total assets$10.1M
Half of its grants to organizations were between $7,500 and $15,000.
From the return
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2024):
| Contact | WILLIAM KNOX HOLT FOUNDATION ATTN C |
|---|---|
| Address | PO BOX 90070, SAN ANTONIO TX 78209 |
| Phone | 2106013702 |
| Form and materials | LETTER REQUEST STATING THE NAME OF THE ORGANIZATION, ADDRESS, PURPOSE OF GRANT AND BACKGROUND INFORMATION ON THE ORGANIZATION. |
| Deadlines | NONE |
| Restrictions | CHARITABLE FIELDS: EDUCATION, MEDICAL RESEARCH, SOCIAL SERVICES, ARTS & SCIENCES GEOGRAPHICAL AREAS: CALIFORNIA, TEXAS, COLORADO, AND NEW YORK |
Copied as filed. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
33% of grants went outside Texas.
Grants paid in tax year 2024
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Colorado Rocky Mountain School Inc | Carbondale, CO | To fund organization's exempt purpose. | $50,000 |
| Monterey Bay Aquarium Foundation | Monterey, CA | To fund organization's exempt purpose. | $35,000 |
| Just Keep Livin Foundation | Sherman Oaks, CA | To fund after school programs. | $30,000 |
| University of the Pacific | Stockton, CA | To fund the library project. | $25,000 |
| Mobile Loaves & Fishes Inc | Austin, TX | To fund community first village program. | $20,000 |
| University of California Berkeley Foundation | Berkeley, CA | To fund the lawrence hall of science outdoor nature lab. | $20,000 |
| San Joaquin Pioneer & Historical Society | Stockton, CA | To fund organization's exempt purpose. | $15,000 |
| Witte Museum | San Antonio, TX | To fund organization's exempt purpose. | $15,000 |
| Austin Ymbl Sunshine Camp | Austin, TX | To fund organization's exempt purpose. | $10,000 |
| Cmc Foundation of Central Texas | St Louis, MO | To fund organization's exempt purpose. | $10,000 |
| Mcnay Art Museum | San Antonio, TX | To fund art-based education programs. | $10,000 |
| San Antonio Botanical Garden Society Inc | San Antonio, TX | To fund imaginary worlds. | $10,000 |
| San Antonio River Foundation | San Antonio, TX | To fund the confluence park program. | $10,000 |
| Texas A&m University - Kingsville Foundation Inc | Kingsville, TX | To fund the caesar kleberg wildlife research center's holt-atherton memorial fund. | $10,000 |
| The Board of Trustees of the Leland Stanford Junior University | Redwood City, CA | To fund organization's exempt purpose. | $10,000 |
| The Explorer's Club - Texas Chapter | Austin, TX | To fund organization's exempt purpose. | $10,000 |
| The Holdsworth Center | Austin, TX | To fund organization's exempt purpose. | $10,000 |
| Film Society of Austin Inc | Austin, TX | To fund organization's exempt purpose. | $7,500 |
| Muny Conservancy | Austin, TX | To fund summer camp scholarships. | $7,500 |
| Greater Austin Performing Arts Center Inc | Austin, TX | To fund organization's exempt purpose. | $5,000 |
| Mind Science Foundation | San Antonio, TX | To fund organization's exempt purpose. | $5,000 |
| Musical Bridges Around the World Inc | San Antonio, TX | To fund youth programs. | $5,000 |
| Pease Park Conservancy | Austin, TX | To fund organization's exempt purpose. | $5,000 |
| Texas Biomedical Research Institute | San Antonio, TX | To fund organization's exempt purpose. | $1,000 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2024 | $336,000 | 24 |
| 2023 | $332,500 | 21 |
Sources
- IRS Form 990-PF, tax year 2024, filed Nov 11, 2025 - IRS e-file batch, object ID 202523159349102212
- IRS Tax Exempt Organization Search for EIN 74-6084245
- Profile updated Nov 5, 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.