Leonard & Beryl Buck Foundation
The Leonard & Beryl Buck Foundation is a charitable trust and public charity based in Saint Louis, Missouri. Established in 1979, it distributes funds for nonprofit charitable, religious, and educational activities in Marin County, California.
Leonard & Beryl Buck Foundation at a glance
In short: Leonard & Beryl Buck Foundation gave $27.1M across 57 grants in 2025 (avg $476K), mostly in California. 38% of 2025 grantees were new. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $27,136,144
- -12.3% vs 2024
- Grants made (2025)
- 57
- -43.0% vs 2024
- Average grant
- $476,073
- +53.9% vs 2024
- Median grant
- $200,000
- Total assets
- $1,133,444,734
- +4.6% vs 2024
- New grantees (estimate)
- 38% first-time grantees (15 of 39, 2025)
- Primary geography
- California (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Leonard & Beryl Buck Foundation
- Contact
Mailing address: PO Box 505 Mac H0006-092, Saint Louis, MO 63166
Phone: (704) 590-2828
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Leonard & Beryl Buck Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Buck Institute for Research on Aging ($7.7M). Together the top 10 received $21.1M.
Organizations only. It also paid 1 individual scholarship ($9,200), which are not listed by name.
Grant Size Distribution
457 grants across all recorded years
The most common grant size was in the $100–250K range: 137 grants of 457 (30%).
Geographic Focus
Where this funder awards grants
The foundation states that its charitable activities are in Marin County, California. All reported grant dollars in 2025 went to recipients in California.
Grant Distribution by State
Share of 2025 grant dollars across all 57 itemized grants.
Cities
Is Leonard & Beryl Buck Foundation open to new grantees?
38%
first-time grantees, 2025
In 2025, 15 of 39 grantees (38%) were first-time recipients. First grants averaged $347K; repeat grants $914K. How we count
Medians: $200K first-time, $302K repeat.
- 38% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (−10%). Method
Estimate from itemized grant lists in IRS Form 990 filings (2019–2025). 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 2019 to 2025, annual grant giving ranged from $24.8M (2019) to $42.1M (2023). In 2025 it made 57 grants totaling $27.1M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Buck Institute for Research on Aging Novato, CA | Buck Foundation Major Projects | $7,675,008 |
| Habitat for Humanity Greater San Francisco Inc San Francisco, CA | Provide General Operating Support in Marin | $3,000,000 |
| Alcohol Justice San Rafael, CA | Buck Foundation Major Projects | $1,535,002 |
| Center for Volunteer and Nonprofit Leadership of Marin (CVNL) San Rafael, CA | Provide General Operating Support in Marin | $1,200,000 |
| Buck Institute for Education Novato, CA | Buck Foundation Major Projects | $1,023,334 |
| Eden Housing Inc Hayward, CA | Support the coast guard affordable housing project in west marin | $1,000,000 |
| The San Francisco Foundation San Francisco, CA | Support all home regional homelessness prevention fund's pilot program in Marin county | $1,000,000 |
| Community Land Trust Association of West Marin Point Reyes Station, CA | Support Interim Housing in West Marin | $1,000,000 |
| Marin Wildfire Prevention Authority San Rafael, CA | Provide General Operating Support in Marin | $728,000 |
| Homeward Bound of Marin Novato, CA | Support creating workforce housing and ending veteran homelessness in marin | $666,000 |
Ready to take the next step with Leonard & Beryl Buck Foundation?
Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $1,133,444,734 | $62,821,444 | $42,648,171 | $27,136,144 | 57 | $62,821,444 |
| 2024 | $1,083,408,528 | $57,449,073 | $75,754,621 | $30,926,593 | 100 | $57,449,073 |
| 2023 | $1,056,902,471 | $62,145,543 | $55,257,405 | $42,060,036 | 102 | $62,145,543 |
| 2022 | $1,041,465,445 | $55,717,446 | $44,490,973 | $30,136,344 | 97 | $55,717,446 |
| 2021 | $1,159,755,958 | $49,528,085 | $56,067,444 | $30,293,578 | 101 | $49,528,085 |
| 2020 | $913,347,774 | $56,088,299 | $48,717,138 | $30,546,537 | 130 | $56,088,299 |
| 2019 | $959,513,373 | $53,504,592 | $36,565,064 | $24,821,632 | 111 | $53,504,592 |
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The foundation states that its mission is to distribute funds for nonprofit charitable, religious, or educational activities in Marin County, California.
Its filing describes support for MCF’s strategic initiatives: closing the educational achievement gap, developing affordable housing, increasing economic security and upward mobility for poor and low-income individuals and families, and reducing the environmental impacts of climate change. The filing also names community grant areas including immigrant integration, services for older adults, community health, legal services, arts education and community arts, social justice, and access to parks and open space.
The grantees’ own descriptions illustrate the range of organizations supported. The Buck Institute for Research on Aging says it works to increase healthy, productive years through biomedical research on aging and age-related diseases. Eden Housing says it creates and sustains affordable housing communities, while Homeward Bound of Marin describes providing emergency shelter, supportive housing, and services for people experiencing homelessness. The Buck Institute for Education says it builds teachers’ and school leaders’ capacity for project-based learning.
Grantmaking
In filing year 2025, the foundation reported 57 grants totaling $27,136,144. Grants ranged from $8,500 to $7,675,008, with a median grant of $200,000.
Among the largest reported grants were $7,675,008 to the Buck Institute for Research on Aging for “Buck Foundation Major Projects”; $3,000,000 to Habitat for an individual recipient for general operating support in Marin; and $1,535,002 to Alcohol Justice for “Buck Foundation Major Projects.” Other large grants included $1,200,000 to the Center for Volunteer and Nonprofit Leadership of Marin for general operating support in Marin, $1,023,334 to the Buck Institute for Education for “Buck Foundation Major Projects,” and $1,000,000 each to Eden Housing, The San Francisco Foundation, and the Community Land Trust Association of West Marin for specified housing and homelessness-related projects.
Leadership & Key People
Officers and directors from IRS filings
Leonard & Beryl Buck Foundation's 2025 filing lists 2 officers; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Marin Community Foundation
Distribution Trustee
On filings since 2019
10 hrs/week
No compensation reported
Wells Fargo Bank NA
Investment Trustee
On filings since 2019
10 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "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 Leonard & Beryl Buck Foundation
How much does Leonard & Beryl Buck Foundation give each year?
Leonard & Beryl Buck Foundation gave $27.1M across 57 grants in 2025, according to its 2025 IRS Form 990. In 2024 it gave $30.9M across 100 grants.
What is Leonard & Beryl Buck Foundation's typical grant size?
Leonard & Beryl Buck Foundation's median grant in 2025 was $200,000, and its average grant was $476,073, across 57 grants on its 2025 IRS Form 990. Organizations receiving their first grant from Leonard & Beryl Buck Foundation that year got $347K on average.
Where does Leonard & Beryl Buck Foundation give grants?
Leonard & Beryl Buck Foundation gives mostly in California: 100% of the grant dollars itemized on its 2025 IRS Form 990 went to recipients there. The most frequent recipient cities were San Rafael, CA (16 grants), Novato, CA (13 grants), San Francisco, CA (5 grants) and Point Reyes Station, CA (5 grants).
Does Leonard & Beryl Buck Foundation give general operating support?
Yes: 30% of Leonard & Beryl Buck Foundation's 2025 grants with a stated purpose (17 of 57) were for general or operating support, per its 2025 IRS Form 990. Recurring purposes include "Buck Foundation Major Projects" (3 grants).
Who are Leonard & Beryl Buck Foundation's largest grantees?
Leonard & Beryl Buck Foundation's largest 2025 grantees include Buck Institute for Research on Aging ($7,675,008), Habitat for Humanity Greater San Francisco Inc ($3,000,000) and Marin Community Foundation ($2,333,100 across 8 grants), according to its 2025 IRS Form 990. It also paid 1 individual scholarship ($9,200), which are not listed by name. Together they received 48% of its itemized 2025 grant dollars.
How large is Leonard & Beryl Buck Foundation?
Leonard & Beryl Buck Foundation reported $1.1B in total assets on its 2025 IRS Form 990. Its revenue that year was $62.8M.
What does Leonard & Beryl Buck Foundation fund?
The foundation states that its mission is to distribute funds for nonprofit charitable, religious, or educational activities in Marin County, California. See mission & focus areas ↑
How do I apply for a grant from Leonard & Beryl Buck Foundation?
Leonard & Beryl Buck Foundation has no public application process in the sources Grantable reviewed. Contact the foundation directly before submitting a request.
What is Leonard & Beryl Buck Foundation's EIN?
Leonard & Beryl Buck Foundation's EIN (Employer Identification Number) is 94-6485668. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings. Research dossier generated September 2026.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2019 (received by the IRS July 13, 2020)
- Updated Form 990 for fiscal year 2020 (received by the IRS May 14, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS May 11, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS May 15, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS May 10, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS May 2, 2025)
- Added Form 990 for fiscal year 2025 (received by the IRS May 14, 2026)
- IRS filings on file for fiscal years 2019–2025
Explore Open Grants
Browse active grant opportunities in Leonard & Beryl Buck Foundation's focus areas in our free grants database
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Cite this profile
Grantable. (2026). Leonard & Beryl Buck Foundation funder profile. GrantGraph. Retrieved October 5, 2026, from https://grantable.co/funders/leonard-and-beryl-buck-foundation-morg_593150f8a2904f73b39a8e481e5c7fbb
BibTeX
@misc{grantable_946485668_2026,
author = {{Grantable}},
title = {{Leonard \& Beryl Buck Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/leonard-and-beryl-buck-foundation-morg_593150f8a2904f73b39a8e481e5c7fbb},
note = {Accessed 2026-10-05. 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 Leonard & Beryl Buck 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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