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Form 990-PFTax year 2025EIN 20-8134458

C Stone Foundation

A private foundation in San Antonio, TX. Its return for tax year 2025 lists 8 grants and $205,000 paid in grants.

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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

    $205,000

    Grants listed
    8
    Assets, end of year
    $1,751,409

  • Tax year 2024

    $2,244,390

    Grants listed
    7
    Assets, end of year
    $1,641,179

  • Tax year 2023

    $275,000

    Grants listed
    10
    Assets, end of year
    $2,756,028

  • Tax year 2022

    $315,000

    Grants listed
    11
    Assets, end of year
    $3,047,165

  • Tax year 2021

    $320,000

    Grants listed
    8
    Assets, end of year
    $3,395,519

  • Tax year 2020

    $270,000

    Grants listed
    8
    Assets, end of year
    $3,478,120

  • Tax year 2019

    $150,000

    Grants listed
    8
    Assets, end of year
    $3,626,093

  • Tax year 2018

    $370,000

    Grants listed
    15
    Assets, end of year
    $3,715,430

Grants paid in 2025

8 grants, largest first

As listed on the return.

  1. Central Montana Medical Facilities Inc (dba Central Montana Medical CentLewistown, MT

    General Purpose

    $50,000
  2. ExplorationWorks IncHelena, MT

    General Purpose

    $50,000
  3. Rocky Mountain CollegeBillings, MT

    General Purpose

    $50,000
  4. The Myrna Loy (Myrna Loy Center)Helena, MT

    General Purpose

    $30,000
  5. Montana History Foundation IncHelena, MT

    General Purpose

    $10,000
  6. Kakenya's DreamArlington, VA

    General Purpose

    $5,000
  7. Gods Love Inc (God's Love Homeless Shelter)Helena, MT

    General Purpose

    $5,000
  8. Max S Baucus InstituteBozeman, MT

    General Purpose

    $5,000

Where the money goes

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

  1. Education2 grants $55,00046% of the total
  2. Human services1 grant $50,00042% of the total
  3. Arts and culture1 grant $10,0008% of the total
  4. Philanthropy and grantmaking1 grant $5,0004% of the total

By State

Grants to organizations with a US address, latest year.

  1. Montana7 grants $200,000
  2. Virginia1 grant $5,000

Officers, directors and trustees

3 people as filed

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

  • Catherine S CampbellTrustee Hours 0Pay $0
  • Ruth C AustinTrustee Hours 0Pay $0
  • Eloise D AustinTrustee Hours 0Pay $0

The return

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