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Form 990-PFTax year 2025EIN 61-1805991

The Williamson Foundation

A private foundation in San Antonio, TX. Its return for tax year 2025 lists 20 grants and $74,975 paid in grants.

See which foundations fund work like yours Matching by cause, place and grant size

Tax year 2025 (period ending Dec 31, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

8 returns on file
Grants paid by tax year. The latest year is in blue.

  • Tax year 2025

    $74,975

    Grants listed
    20
    Assets, end of year
    $2,853,229

  • Tax year 2024

    $97,021

    Grants listed
    19
    Assets, end of year
    $2,910,273

  • Tax year 2023

    $85,315

    Grants listed
    20
    Assets, end of year
    $2,723,205

  • Tax year 2022

    $77,950

    Grants listed
    19
    Assets, end of year
    $2,647,544

  • Tax year 2021

    $61,000

    Grants listed
    21
    Assets, end of year
    $2,573,448

  • Tax year 2020

    $29,500

    Grants listed
    19
    Assets, end of year
    $2,289,052

  • Tax year 2019

    $5,500

    Grants listed
    3
    Assets, end of year
    $2,136,764

  • Tax year 2018

    $6,200

    Grants listed
    2
    Assets, end of year
    $1,955,901

Grants paid in 2025

20 grants, largest first

As listed on the return.

  1. Rancho Mirage Writers FestivalRancho Mirage, CA

    For the orgs charitable purposes

    $20,000
  2. Texas Public RadioSan Antonio, TX

    For the orgs charitable purposes

    $10,325
  3. Freedom From Religion FoundationMadison, WI

    For the orgs charitable purposes

    $6,198
  4. Briscoe Western Art MuseumSan Antonio, TX

    For the orgs charitable purposes

    $5,149
  5. McCallum TheatrePalm Desert, CA

    For the orgs charitable purposes

    $5,000
  6. KLRNSan Antonio, TX

    For the orgs charitable purposes

    $4,000
  7. Opera San AntonioSan Antonio, TX

    For the orgs charitable purposes

    $3,090
  8. Propublica Publisher's CircleNew York, NY

    For the orgs charitable purposes

    $3,075
  9. Project MendSan Antonio, TX

    For the orgs charitable purposes

    $2,630
  10. San Antonio Conservation Society FoundationSan Antonio, TX

    For the orgs charitable purposes

    $2,580
  11. San Antonio Botancial GardenSan Antonio, TX

    For the orgs chartiable purposes

    $2,576
  12. Texas TribuneAustin, TX

    For the orgs charitable purposes

    $2,045
  13. McNay Art MuseumSan Antonio, TX

    For the orgs charitable purposes

    $1,500
  14. The Witte MuseumSan Antonio, TX

    For the orgs charitable purposes

    $1,200
  15. Wikimedia FoundationSan Francisco, CA

    For the orgs chartiable purpose

    $1,040
  16. Hemisfair ConservancySan Antonio, TX

    For the orgs charitable purposes

    $1,037
  17. Green Spaces Alliance of South TexasSan Antonio, TX

    For the orgs charitable purposes

    $1,030
  18. San Antonio Museum of ArtSan Antonio, TX

    For the orgs charitable purposes

    $1,000
  19. Texas State Historical AssociationAustin, TX

    For the orgs charitable purposes

    $1,000
  20. Kansas University Endowment FoundationLawrence, KS

    For the orgs charitable purposes

    $500

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Arts and culture8 grants $25,84444% of the total
  2. Education3 grants $23,08539% of the total
  3. Religion1 grant $6,19811% of the total
  4. Medical research1 grant $2,6304% of the total
  5. Sports and recreation1 grant $1,0372% of the total

By State

Grants to organizations with a US address, latest year.

  1. Texas14 grants $39,162
  2. California3 grants $26,040
  3. Wisconsin1 grant $6,198
  4. New York1 grant $3,075
  5. Kansas1 grant $500

Officers, directors and trustees

3 people as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Patrick WilliamsonMANAGER Hours 0Pay $0
  • Michael WilliamsonVICE PRESIDENT Hours 0Pay $0
  • Ronn WilliamsonSECRETARY/TREASURER Hours 0Pay $0

The return

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