The Thomas and Stacey Siebel
The Thomas and Stacey Siebel is a private foundation based in Redwood City, California. Its 2024 filing lists grants to charitable organizations including the University of Illinois Foundation, Salvation Army locations, Bob Hoover Academy, and Siebel Scholars Foundation.
The Thomas and Stacey Siebel at a glance
In short: The Thomas and Stacey Siebel gave $56.0M across 22 grants in 2024 (avg $2.5M), mostly in Illinois. 14% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $55,963,000
- +796.2% vs 2023
- Grants made (2024)
- 22
- -4.3% vs 2023
- Average grant
- $2,543,773
- +837.0% vs 2023
- Median grant
- $116,000
- Total assets
- $69,890,219
- -40.2% vs 2023
- New grantees (estimate)
- 14% first-time grantees (3 of 22, 2024; small sample)
- Primary geography
- Illinois (89% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to The Thomas and Stacey Siebel
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: PO Box 5287, Redwood City, CA 94063
Phone: (650) 299-5200
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who The Thomas and Stacey Siebel funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was University of Illinois Fdn ($50.0M). Together the top 10 received $55.6M.
Grant Size Distribution
123 grants across all recorded years
The most common grant size was under $50K: 50 grants of 123 (41%).
Geographic Focus
Where this funder awards grants
In 2024, the largest share of grant dollars went to Illinois recipients (89%), followed by California (5%), Montana (3%), New York (2%), and Maryland (0%). Listed grants also included recipients in Massachusetts.
Grant Distribution by State
Share of 2024 grant dollars across all 22 itemized grants.
States
Cities
Is The Thomas and Stacey Siebel open to new grantees?
14%
first-time grantees, 2024
In 2024, 3 of 22 grantees (14%) were first-time recipients. With only 22 grantees, that is a small sample: one grantee more or less moves the share by about 5 points. First grants averaged $17M; repeat grants $313K. How we count
Medians: $10K first-time, $132K repeat.
- 82% of 2024 grantees were also funded in 2023. Method
- Giving grew 172% from 2021 to 2024. Method
- In 2024 it paid out well above its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2024). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2024, annual grant giving ranged from $6.0M (2020) to $56.0M (2024). In 2024 it made 22 grants totaling $56.0M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| University of Illinois Fdn Chicago, IL | To Support General Operations | $50,000,000 |
| Salvation Army - Helena MT Helena, MT | To provide food and shelter to homeless families and individuals in the helena area | $1,000,000 |
| Salvation Army - San Francisco San Francisco, CA | To provide food and shelter to homeless families and individuals in the san francisco area | $1,000,000 |
| Salvation Army - San Jose San Jose, CA | To provide food and shelter to homeless families and individuals in the san jose area | $1,000,000 |
| Salvation Army New York City New York, NY | To provide food and shelter to homeless families and individuals in manhattan | $1,000,000 |
| Salvation Army - Great Falls MT Great Falls, MT | To provide food and shelter to homeless families and individuals in the great falls area | $500,000 |
| Bob Hoover Academy Salinas, CA | To Support General Operations | $320,000 |
| Siebel Scholars Foundation Redwood City, CA | To Support General Operations | $315,000 |
| Salvation Army - Billings MT Billings, MT | To provide food and shelter to homeless families and individuals in the billings area | $250,000 |
| Hoover Institution Stanford, CA | To Support General Operations | $200,000 |
Ready to take the next step with The Thomas and Stacey Siebel?
Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2024 | $69,890,219 | $10,241,925 | $57,108,769 | $55,963,000 | 22 | $56,128,508 | $6,737,291 | $4,443,459 |
| 2023 | $116,780,977 | $5,396,362 | $7,394,501 | $6,244,343 | 23 | $6,500,816 | $4,189,429 | $5,657,127 |
| 2022 | $114,993,885 | $5,871,710 | $8,422,267 | $7,037,977 | 28 | $7,511,959 | $4,230,266 | $5,924,251 |
| 2021 | $131,945,562 | $9,137,480 | $22,811,373 | $20,565,000 | 26 | $20,924,813 | $7,864,783 | $6,613,538 |
| 2020 | $140,125,341 | $7,775,074 | $7,107,963 | $6,017,500 | 24 | — | $6,852,582 | $6,903,957 |
Under IRS private-foundation payout rules, The Thomas and Stacey Siebel reported a distributable amount of $4.4M for 2024 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
No mission statement for the foundation is provided. Its 2024 grants show support for organizations working in areas such as education, food and shelter, and aviation.
Among its grantees, Bob Hoover Academy describes its mission as providing youth with aviation- and flight-training-focused educational programs to help them complete high school and pursue further education or vocational training. The Salvation Army grants listed in the filing supported food and shelter for homeless families and individuals in specified communities. Children’s Health Council, another 2024 grantee, describes its mission as providing services for learning differences and mental health to families from diverse backgrounds.
Grantmaking
In 2024, the foundation made 22 grants totaling $55,963,000. Grant amounts ranged from $1,000 to $50,000,000, with a median of $116,000. The largest grant was $50,000,000 to the University of Illinois Foundation for general operations. Other notable grants included $1,000,000 each to Salvation Army locations in Helena, San Francisco, San Jose, and New York City for food and shelter; $320,000 to Bob Hoover Academy for general operations; and $315,000 to Siebel Scholars Foundation for general operations.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Thomas M. Siebel as president and Stacey Siebel as secretary, CFO, and treasurer.
The Thomas and Stacey Siebel is led by Thomas M. Siebel, President on every filing since 2020; none of the 2 officers listed in 2024 report compensation.
Officers on the 2024 filing
Thomas M. Siebel
President
On filings since 2020
1 hr/week
No compensation reported
Stacey Siebel
Secretary, CFO & Treasurer
Secretary → Secretary, CFO & Treasurer, 2021
On filings since 2020
1 hr/week
No compensation reported
Former officers (3)
- Former: Jennifer Stern (2022–2023) — Director
- Former: Mark Berwick (2021) — CFO & Treasurer
- Former: Ann Akichika (2020) — CFO & Treasurer
Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about The Thomas and Stacey Siebel
How much does The Thomas and Stacey Siebel give each year?
The Thomas and Stacey Siebel gave $56.0M across 22 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $6.2M across 23 grants.
What is The Thomas and Stacey Siebel's typical grant size?
The Thomas and Stacey Siebel's median grant in 2024 was $116,000, and its average grant was $2,543,773, across 22 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from The Thomas and Stacey Siebel that year got $17M on average.
Where does The Thomas and Stacey Siebel give grants?
The Thomas and Stacey Siebel gives mostly in Illinois: 89% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The next largest state was California (5%). The most frequent recipient cities were Wolf Creek, MT (3 grants), Redwood City, CA (2 grants) and Augusta, MT (2 grants).
Does The Thomas and Stacey Siebel give general operating support?
Yes: 59% of The Thomas and Stacey Siebel's 2024 grants with a stated purpose (13 of 22) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are The Thomas and Stacey Siebel's largest grantees?
The Thomas and Stacey Siebel's largest 2024 grantees include University of Illinois Fdn ($50,000,000), Salvation Army - Helena MT ($1,000,000) and Salvation Army - San Francisco ($1,000,000), according to its 2024 IRS Form 990-PF. Together they received 93% of its itemized 2024 grant dollars.
How large is The Thomas and Stacey Siebel?
The Thomas and Stacey Siebel reported $69.9M in total assets on its 2024 IRS Form 990-PF. It paid out $56.1M in qualifying distributions that year, against a required minimum of $4.4M (roughly 5% of its investment assets).
What does The Thomas and Stacey Siebel fund?
No mission statement for the foundation is provided. Its 2024 grants show support for organizations working in areas such as education, food and shelter, and aviation. See mission & focus areas ↑
How do I apply for a grant from The Thomas and Stacey Siebel?
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is The Thomas and Stacey Siebel's EIN?
The Thomas and Stacey Siebel's EIN (Employer Identification Number) is 94-3256331. IRS Form 990 filing data is available on this page for 2020–2024.
Does The Thomas and Stacey Siebel accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
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Cite this profile
Grantable. (2026). The Thomas and Stacey Siebel funder profile. GrantGraph. Retrieved October 14, 2026, from https://grantable.co/funders/the-thomas-and-stacey-siebel-morg_eb5ebda15e874ff396f7ebf48d8188b5
BibTeX
@misc{grantable_943256331_2026,
author = {{Grantable}},
title = {{The Thomas and Stacey Siebel funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/the-thomas-and-stacey-siebel-morg_eb5ebda15e874ff396f7ebf48d8188b5},
note = {Accessed 2026-10-14. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from The Thomas and Stacey Siebel's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
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