Private foundation · EIN 74-6084245

William Knox Holt Foundation

Accepts applications

San Antonio, TX

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Tax year 2024 (period ending 2024-12-31) · Filed with IRS 2025 · Data as of 2026-10-24 · View filing on ProPublica · Source: IRS e-file object 202523159349102212
Total assets (EOY)$4,353,241
Grants paid$336,000
Typical (median) grant$10,000
Grants listed24
Giving in home state (TX)42%

Grant size distribution

RangeGrants
Under $5K1
$5K–$25K19
$25K–$100K4
$100K+0

Smallest $1,000 · Largest $50,000

Geographic focus

TX
42%
CA
40%
CO
15%
MO
3%

Common purposes

organizationexemptafterschoollibraryprojectcommunityfirstvillagelawrencehallscienceoutdoornaturebased

Giving history

Tax yearContributions paidTotal assetsGrants listed
2023$332,500$4,612,89021
2024$336,000$4,353,24124

Years shown are the filings ingested so far; more years are added as additional IRS batches are processed.

How to apply

ContactWILLIAM KNOX HOLT FOUNDATION ATTN C
AddressPO BOX 90070, SAN ANTONIO, TX, 78209
Phone2106013702
Form & materialsLETTER REQUEST STATING THE NAME OF THE ORGANIZATION, ADDRESS, PURPOSE OF GRANT AND BACKGROUND INFORMATION ON THE ORGANIZATION.
DeadlinesNONE
RestrictionsCHARITABLE FIELDS: EDUCATION, MEDICAL RESEARCH, SOCIAL SERVICES, ARTS & SCIENCES GEOGRAPHICAL AREAS: CALIFORNIA, TEXAS, COLORADO, AND NEW YORK

Source: 990-PF Part XV line 2, tax year 2024.

Top recipients (tax year 2024)

RecipientLocationPurposeAmount
Colorado Rocky Mountain School IncCARBONDALE, COTO FUND ORGANIZATION'S EXEMPT PURPOSE.$50,000
Monterey Bay Aquarium FoundationMONTEREY, CATO FUND ORGANIZATION'S EXEMPT PURPOSE.$35,000
Just Keep Livin FoundationSHERMAN OAKS, CATO FUND AFTER SCHOOL PROGRAMS.$30,000
University Of The PacificSTOCKTON, CATO FUND THE LIBRARY PROJECT.$25,000
Mobile Loaves & Fishes IncAUSTIN, TXTO FUND COMMUNITY FIRST VILLAGE PROGRAM.$20,000
University Of California Berkeley FoundationBERKELEY, CATO FUND THE LAWRENCE HALL OF SCIENCE OUTDOOR NATURE LAB.$20,000
San Joaquin Pioneer & Historical SocietySTOCKTON, CATO FUND ORGANIZATION'S EXEMPT PURPOSE.$15,000
Witte MuseumSAN ANTONIO, TXTO FUND ORGANIZATION'S EXEMPT PURPOSE.$15,000
Austin Ymbl Sunshine CampAUSTIN, TXTO FUND ORGANIZATION'S EXEMPT PURPOSE.$10,000
Cmc Foundation Of Central TexasST LOUIS, MOTO FUND ORGANIZATION'S EXEMPT PURPOSE.$10,000
Mcnay Art MuseumSAN ANTONIO, TXTO FUND ART-BASED EDUCATION PROGRAMS.$10,000
San Antonio Botanical Garden Society IncSAN ANTONIO, TXTO FUND IMAGINARY WORLDS.$10,000
San Antonio River FoundationSAN ANTONIO, TXTO FUND THE CONFLUENCE PARK PROGRAM.$10,000
Texas A&M University - Kingsville Foundation IncKINGSVILLE, TXTO FUND THE CAESAR KLEBERG WILDLIFE RESEARCH CENTER'S HOLT-ATHERTON MEMORIAL FUND.$10,000
The Board Of Trustees Of The Leland Stanford Junior UniversityREDWOOD CITY, CATO FUND ORGANIZATION'S EXEMPT PURPOSE.$10,000
The Explorer'S Club - Texas ChapterAUSTIN, TXTO FUND ORGANIZATION'S EXEMPT PURPOSE.$10,000
The Holdsworth CenterAUSTIN, TXTO FUND ORGANIZATION'S EXEMPT PURPOSE.$10,000
Film Society Of Austin IncAUSTIN, TXTO FUND ORGANIZATION'S EXEMPT PURPOSE.$7,500
Muny ConservancyAUSTIN, TXTO FUND SUMMER CAMP SCHOLARSHIPS.$7,500
Greater Austin Performing Arts Center IncAUSTIN, TXTO FUND ORGANIZATION'S EXEMPT PURPOSE.$5,000
Mind Science FoundationSAN ANTONIO, TXTO FUND ORGANIZATION'S EXEMPT PURPOSE.$5,000
Musical Bridges Around The World IncSAN ANTONIO, TXTO FUND YOUTH PROGRAMS.$5,000
Pease Park ConservancyAUSTIN, TXTO FUND ORGANIZATION'S EXEMPT PURPOSE.$5,000
Texas Biomedical Research InstituteSAN ANTONIO, TXTO FUND ORGANIZATION'S EXEMPT PURPOSE.$1,000
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