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Form 990-PFTax year 2025EIN 68-0344239

Siebel Family Charitable Foundation

A private foundation in Ross, CA. Its return for tax year 2025 lists 13 grants and $87,500 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

    $87,500

    Grants listed
    13
    Assets, end of year
    $568,345

  • Tax year 2024

    $32,300

    Grants listed
    10
    Assets, end of year
    $482,635

  • Tax year 2023

    $44,800

    Grants listed
    8
    Assets, end of year
    $498,626

  • Tax year 2022

    $47,500

    Grants listed
    13
    Assets, end of year
    $528,816

  • Tax year 2021

    $73,700

    Grants listed
    15
    Assets, end of year
    $655,014

  • Tax year 2020

    $55,655

    Grants listed
    11
    Assets, end of year
    $736,200

  • Tax year 2019

    $79,000

    Grants listed
    13
    Assets, end of year
    $429,932

  • Tax year 2018

    $17,730

    Grants listed
    13
    Assets, end of year
    $509,752

Grants paid in 2025

13 grants, largest first

As listed on the return.

  1. Ross School FoundationRoss, CA

    Support

    $25,000
  2. Branson SchoolRoss, CA

    Endowment fund

    $20,000
  3. Conservation Int'l FDN Development DeptArlington, VA

    Support

    $10,000
  4. St Anselm ChurchRoss, CA

    Restoration campaign

    $10,000
  5. Greenwich Country Day SchoolGreenwich, CT

    Support

    $5,000
  6. Stanford UniversityStanford, CA

    Support

    $5,000
  7. Treasure State FoundationHelena, MT

    Support

    $3,000
  8. Conservation Int'l FDNArlington, VA

    Support

    $2,500
  9. Oceanic SocietyRoss, CA

    Support

    $2,000
  10. Raptors of the RockiesFlorence, MT

    Support

    $2,000
  11. Alpha Pi Alliance for the Preservation of Historic Places IncVerona, WI

    Support

    $1,000
  12. Clark Fork CoalitionMissoula, MT

    Support

    $1,000
  13. Teller Wildlife RefugeCorvallis, MT

    Support

    $1,000

Where the money goes

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

  1. Education4 grants $55,00089% of the total
  2. Animals2 grants $3,0005% of the total
  3. Public affairs1 grant $3,0005% of the total
  4. Environment1 grant $1,0002% of the total

By State

Grants to organizations with a US address, latest year.

  1. California5 grants $62,000
  2. Virginia2 grants $12,500
  3. Montana4 grants $7,000
  4. Connecticut1 grant $5,000
  5. Wisconsin1 grant $1,000

Officers, directors and trustees

6 people as filed

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

  • Kenneth F SiebelPRESIDENT Hours 0Pay $0
  • Judy A SiebelTREASURER Hours 0Pay $0
  • Jennifer Siebel NewsomDIRECTOR Hours 0Pay $0
  • Brooke S MitchellDIRECTOR Hours 0Pay $0
  • Melissa A Siebel SchillerDIRECTOR Hours 0Pay $0
  • Jessica Siebel GrussDIRECTOR Hours 0Pay $0

The return

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