Siebel Family Charitable Foundation
The Siebel Family Charitable Foundation is a private foundation based in Ross, California. Its 2025 filing reports grants to charitable organizations including schools, a church, and conservation organizations; the foundation states that it contributes only to preselected organizations.
Siebel Family Charitable Foundation at a glance
In short: Siebel Family Charitable Foundation gave $88K across 13 grants in 2025 (avg $7K), mostly in California. 31% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $87,500
- +170.9% vs 2024
- Grants made (2025)
- 13
- +30.0% vs 2024
- Average grant
- $6,731
- +108.4% vs 2024
- Median grant
- $3,000
- Total assets
- $568,345
- +17.8% vs 2024
- New grantees (estimate)
- 31% first-time grantees (4 of 13, 2025; small sample)
- Primary geography
- California (71% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Siebel Family Charitable Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: PO Box 218 81 Fernhill Avenue, Ross, CA 94957
Phone: (415) 461-3850
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Siebel Family Charitable Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Ross School Foundation ($25K). Together the top 10 received $85K.
Grant Size Distribution
59 grants across all recorded years
The most common grant size was under $50K: 59 grants of 59 (100%).
Geographic Focus
Where this funder awards grants
The 2025 grants went to recipients in California (71% of grant dollars), Virginia (14%), Montana (8%), Connecticut (6%), and Wisconsin (1%).
Grant Distribution by State
Share of 2025 grant dollars across all 13 itemized grants.
States
Cities
Is Siebel Family Charitable Foundation open to new grantees?
31%
first-time grantees, 2025
In 2025, 4 of 13 grantees (31%) were first-time recipients. With only 13 grantees, that is a small sample: one grantee more or less moves the share by about 8 points. First grants averaged $7K; repeat grants $7K. How we count
Medians: $8K first-time, $2K repeat.
- 31% of 2025 grantees were also funded in 2024. Method
- Giving grew 84% from 2022 to 2025. Method
- In 2025 it paid out 346% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2025). 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 2025, annual grant giving ranged from $32K (2024) to $88K (2025). In 2025 it made 13 grants totaling $88K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Ross School Foundation Ross, CA | Support | $25,000 |
| Branson School Ross, CA | Endowment Fund | $20,000 |
| Conservation Int'l Fdn Development Dept Arlington, VA | Support | $10,000 |
| St Anselm Church Ross, CA | Restoration Campaign | $10,000 |
| Greenwich Country Day School Greenwich, CT | Support | $5,000 |
| Stanford University Stanford, CA | Support | $5,000 |
| Treasure State Foundation Helena, MT | Support | $3,000 |
| Conservation Int'l Fdn Arlington, VA | Support | $2,500 |
| Oceanic Society Ross, CA | Support | $2,000 |
| Raptors of the Rockies Florence, MT | Support | $2,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $568,345 | $179,267 | $93,237 | $87,500 | 13 | $87,501 | $179,267 | $25,298 |
| 2024 | $482,635 | $22,489 | $37,125 | $32,300 | 10 | $32,300 | $22,489 | $27,020 |
| 2023 | $498,626 | $19,235 | $50,425 | $44,800 | 8 | $44,800 | $19,235 | $28,693 |
| 2022 | $528,816 | $-73,753 | $52,445 | $47,500 | 13 | $47,500 | $3,709 | $30,802 |
| 2021 | $655,014 | $646 | $78,225 | $73,700 | 15 | $73,700 | $2,617 | $40,846 |
| 2020 | $736,200 | $366,183 | $59,915 | $55,655 | 11 | — | $411,410 | $27,981 |
Under IRS private-foundation payout rules, Siebel Family Charitable Foundation reported a distributable amount of $25K for 2025 — 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 foundation mission statement is provided. Its 2025 grants included support for schools and conservation organizations, as well as a church restoration campaign and an endowment fund. Among the grantees, Greenwich Country Day School describes its mission as helping children develop their abilities and achieve high standards in study, play, and character. Treasure State Foundation says it supports charitable and educational initiatives for Montana’s First Spouse and the restoration and maintenance of the Montana Governor’s official residence. Teller Wildlife Refuge describes its work as conservation, habitat stewardship, education, and recreation.
Grantmaking
In 2025, the foundation gave $87,500 across 13 grants. Grant amounts ranged from $1,000 to $25,000, with a median of $3,000. Notable grants included $25,000 to Ross School Foundation for support, $20,000 to Branson School for its endowment fund, $10,000 to Conservation International Foundation Development Department for support, and $10,000 to St. Anselm Church for a restoration campaign. Other grants included $5,000 each to Greenwich Country Day School and Stanford University, and $3,000 to Treasure State Foundation.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Kenneth F. Siebel as president and Judy A. Siebel as treasurer. Directors listed are Jennifer Siebel Newsom, Brooke S. Mitchell, Melissa A. Siebel Schiller, and Jessica Siebel Gruss.
Siebel Family Charitable Foundation is led by Kenneth F. Siebel, President on every filing since 2020; none of the 6 officers listed in 2025 report compensation.
Officers on the 2025 filing
Kenneth F. Siebel
President
On filings since 2020
No compensation reported
Brooke S. Mitchell
Director
On filings since 2020
No compensation reported
Jennifer Siebel Newsom
Director
On filings since 2020
No compensation reported
Jessica Siebel Gruss
Director
On filings since 2020
No compensation reported
Melissa A. Siebel Schiller
Director
On filings since 2020
No compensation reported
Judy A. Siebel
Treasurer
On filings since 2020
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "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 Siebel Family Charitable Foundation
How much does Siebel Family Charitable Foundation give each year?
Siebel Family Charitable Foundation gave $88K across 13 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $32K across 10 grants.
What is Siebel Family Charitable Foundation's typical grant size?
Siebel Family Charitable Foundation's median grant in 2025 was $3,000, and its average grant was $6,731, across 13 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Siebel Family Charitable Foundation that year got $7K on average.
Where does Siebel Family Charitable Foundation give grants?
Siebel Family Charitable Foundation gives mostly in California: 71% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were Virginia (14%) and Montana (8%). The most frequent recipient cities were Ross, CA (4 grants) and Arlington, VA (2 grants).
Does Siebel Family Charitable Foundation give general operating support?
Not in 2025: none of the 13 grants with a stated purpose on Siebel Family Charitable Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Support" (11 grants).
Who are Siebel Family Charitable Foundation's largest grantees?
Siebel Family Charitable Foundation's largest 2025 grantees include Ross School Foundation ($25,000), Branson School ($20,000) and Conservation Int'l Fdn Development Dept ($10,000), according to its 2025 IRS Form 990-PF. Together they received 63% of its itemized 2025 grant dollars.
How large is Siebel Family Charitable Foundation?
Siebel Family Charitable Foundation reported $568K in total assets on its 2025 IRS Form 990-PF. It paid out $88K in qualifying distributions that year, against a required minimum of $25K (roughly 5% of its investment assets).
What does Siebel Family Charitable Foundation fund?
No foundation mission statement is provided. Its 2025 grants included support for schools and conservation organizations, as well as a church restoration campaign and an endowment fund. See mission & focus areas ↑
How do I apply for a grant from Siebel Family Charitable Foundation?
The foundation 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 Siebel Family Charitable Foundation's EIN?
Siebel Family Charitable Foundation's EIN (Employer Identification Number) is 68-0344239. IRS Form 990 filing data is available on this page for 2020–2025.
Does Siebel Family Charitable Foundation 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
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS October 26, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS July 27, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS June 1, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS April 2, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 14, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 8, 2026)
Explore Open Grants
Browse active grant opportunities in Siebel Family Charitable Foundation's focus areas in our free grants database
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Cite this profile
Grantable. (2026). Siebel Family Charitable Foundation funder profile. GrantGraph. Retrieved October 16, 2026, from https://grantable.co/funders/siebel-family-charitable-foundation-morg_6ba7c8acd66c4fa4bc2cb908f4d06667
BibTeX
@misc{grantable_680344239_2026,
author = {{Grantable}},
title = {{Siebel Family Charitable Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/siebel-family-charitable-foundation-morg_6ba7c8acd66c4fa4bc2cb908f4d06667},
note = {Accessed 2026-10-16. 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 Siebel Family Charitable Foundation'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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