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Form 990-PFTax year 2024EIN 94-3256331

The Thomas and Stacey Siebel Foundation

A private foundation in Redwood City, CA. Its return for tax year 2024 lists 22 grants and $56 million paid in grants.

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

Tax year 2024 (period ending Dec 31, 2024), 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

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

  • Tax year 2024

    $55,963,000

    Grants listed
    22
    Assets, end of year
    $69,890,219

  • Tax year 2023

    $6,244,343

    Grants listed
    23
    Assets, end of year
    $116,780,977

  • Tax year 2022

    $7,037,977

    Grants listed
    28
    Assets, end of year
    $114,993,885

  • Tax year 2021

    $20,565,000

    Grants listed
    26
    Assets, end of year
    $131,945,562

  • Tax year 2020

    $6,017,500

    Grants listed
    24
    Assets, end of year
    $140,125,341

Grants paid in 2024

22 grants, largest first

As listed on the return.

  1. University of Illinois FDNChampaign, IL

    To support general operations

    $50,000,000
  2. Salvation Army - Helena MtHelena, MT

    To provide food and shelter to homeless families and individuals in the helena area

    $1,000,000
  3. Salvation Army - San FranciscoSan Francisco, CA

    To provide food and shelter to homeless families and individuals in the san francisco area

    $1,000,000
  4. Salvation Army - San JoseSan Jose, CA

    To provide food and shelter to homeless families and individuals in the san jose area

    $1,000,000
  5. Salvation Army New York CityNew York, NY

    To provide food and shelter to homeless families and individuals in manhattan

    $1,000,000
  6. Salvation Army - Great Falls MtGreat Falls, MT

    To provide food and shelter to homeless families and individuals in the great falls area

    $500,000
  7. Bob Hoover AcademySalinas, CA

    To support general operations

    $320,000
  8. Siebel Scholars FoundationRedwood City, CA

    To support general operations

    $315,000
  9. Salvation Army - Billings MtBillings, MT

    To provide food and shelter to homeless families and individuals in the billings area

    $250,000
  10. Hoover InstitutionStanford, CA

    To support general operations

    $200,000
  11. Aopa FoundationFrederick, MD

    To support general operations

    $132,000
  12. American Academy of Arts & SciencesCambridge, MA

    To support general operations

    $100,000
  13. Augusta Volunteer Fire DepartmentAugusta, MT

    To assist in providing emergency services

    $25,000
  14. Wolf Creek SchoolWolf Creek, MT

    To support general operations

    $25,000
  15. Wolf Creek Volunteer Fire DeptWolf Creek, MT

    To protect the community

    $25,000
  16. Augusta Volunteer Ambulance ServicesAugusta, MT

    To assist in providing emergency services

    $15,000
  17. Montana Game Warden's AssociationWolf Creek, MT

    To support general operations

    $15,000
  18. Children's Health CouncilPalo Alto, CA

    To support general operations

    $10,000
  19. Cteta LTD the Horse Park at WoodsideRedwood City, CA

    To support general operations

    $10,000
  20. Recreational Aviation FoundationBozeman, MT

    To support general operations

    $10,000
  21. The Woodside Trail ClubWoodside, CA

    To support general operations

    $10,000
  22. Iac Chapter 38Oshkosh, WI

    To support general operations

    $1,000

Where the money goes

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

  1. Education2 grants $50,320,00099% of the total
  2. Philanthropy and grantmaking1 grant $315,000<1% of the total
  3. Disaster relief and public safety2 grants $157,000<1% of the total
  4. Social science1 grant $100,000<1% of the total
  5. Health1 grant $10,000<1% of the total
  6. Human services1 grant $10,000<1% of the total

By State

Grants to organizations with a US address, latest year.

  1. Illinois1 grant $50,000,000
  2. California8 grants $2,865,000
  3. Montana9 grants $1,865,000
  4. New York1 grant $1,000,000
  5. Maryland1 grant $132,000
  6. Massachusetts1 grant $100,000
  7. Wisconsin1 grant $1,000

Officers, directors and trustees

2 people as filed

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

  • Thomas M SiebelPRESIDENT Hours 1Pay $0
  • Stacey SiebelSECRETARY/CFO/TREASURER Hours 1Pay $0

The return

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