The Stanley S Langendorf Foundation
The Stanley S. Langendorf Foundation is a private foundation based in San Francisco, California. It awards grants to organizations in primary and secondary education, youth services, and social services that are located in and/or provide direct services to residents of the City and County of San Francisco.
The Stanley S Langendorf Foundation at a glance
In short: The Stanley S Langendorf Foundation gave $1.2M across 149 grants in 2025 (avg $8K), mostly in California. 29% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $1,151,000
- +20.6% vs 2024
- Grants made (2025)
- 149
- +11.2% vs 2024
- Average grant
- $7,725
- +8.4% vs 2024
- Median grant
- $5,000
- Total assets
- $4,358,717
- -11.5% vs 2024
- New grantees (estimate)
- 29% first-time grantees (37 of 127, 2025)
- Primary geography
- California (83% 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 The Stanley S Langendorf Foundation
- How to Apply
-
Submit a Letter of Intent if the organization has never been funded or has not received funding within the prior five years. Proposals are for invited organizations or those funded within the prior five years. The foundation’s filing directs applicants to its website for forms, materials, deadlines, and award restrictions.
- Review Cycle
- The 2026 Letter of Intent deadline was June 1, 2026, and the proposal deadline was July 1, 2026. Both dates have passed.
- Deadline
- The 2026 Letter of Intent deadline was June 1, 2026, and the proposal deadline was July 1, 2026.
- Contact
Application contact: Christopher Quinn Grant Manager
Mailing address: PO Box 2509, San Francisco, CA 94126
Phone: (208) 721-3367
Email: grants@sslfoundation.com
Website: https://www.sslfoundation.org
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Open Grants
1 open opportunity from The Stanley S Langendorf Foundation
Who The Stanley S Langendorf Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was UCSF Foundation ($80K across 5 grants). Together the top 10 received $365K.
Grant Size Distribution
555 grants across all recorded years
The most common grant size was under $50K: 549 grants of 555 (99%).
Geographic Focus
Where this funder awards grants
The foundation’s website says it solely considers applications from organizations located in and/or providing direct services to residents of the City and County of San Francisco. Although its 2025 filing lists grants to recipients in other states and Washington, D.C., the stated application geography is San Francisco.
Grant Distribution by State
Share of 2025 grant dollars across all 149 itemized grants.
States
Cities
Is The Stanley S Langendorf Foundation open to new grantees?
29%
first-time grantees, 2025
In 2025, 37 of 127 grantees (29%) were first-time recipients. First grants averaged $7K; repeat grants $10K. How we count
Medians: $5K first-time, $8K repeat.
- 60% of 2025 grantees were also funded in 2024. Method
- Giving grew 45% from 2022 to 2025. Method
- In 2025 it paid out 385% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF 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 $656K (2021) to $1.2M (2025). In 2025 it made 149 grants totaling $1.2M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| American Red Cross Boone, IA | Community / Social Services | $50,000 |
| St Luke Presbyterian Church San Rafael, CA | Community / Social Services | $35,000 |
| McCallum Theatre Palm Desert, CA | ARTS | $25,000 |
| Meridian International Center Washington, DC | Community / Social Services | $25,000 |
| Nova Southeastern University Fort Lauderdale, FL | Education | $25,000 |
| San Francisco General Hospital Foun San Francisco, CA | Community / Social Services | $25,000 |
| The Posse Foundation San Francisco, CA | YOUTH | $25,000 |
| Tipping Point Community San Francisco, CA | Community / Social Services | $25,000 |
| UCSF Foundation San Francisco, CA | Community / Social Services | $25,000 |
| Kellogg School of Management Evanston, IL | Education | $20,000 |
Ready to take the next step with The Stanley S Langendorf Foundation?
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 | $4,358,717 | $701,983 | $1,268,725 | $1,151,000 | 149 | $1,151,000 | $584,258 | $298,981 |
| 2024 | $4,926,143 | $528,865 | $1,060,879 | $954,500 | 134 | $944,000 | $411,986 | $313,837 |
| 2023 | $5,457,157 | $342,985 | $854,086 | $724,000 | 102 | $724,000 | $212,899 | $326,808 |
| 2022 | $5,968,258 | $476,034 | $901,169 | $792,400 | 76 | $792,400 | $453,198 | $371,151 |
| 2021 | $6,393,393 | $888,898 | $766,291 | $655,500 | 94 | $655,500 | $862,360 | $439,983 |
| 2020 | $6,270,786 | $604,592 | $1,022,977 | $952,500 | 86 | — | $581,044 | $397,189 |
| 2019 | $6,689,171 | $538,980 | $1,159,130 | $1,038,000 | 102 | — | $513,132 | $433,315 |
Under IRS private-foundation payout rules, The Stanley S Langendorf Foundation reported a distributable amount of $299K for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated October 2026.
Mission & Focus Areas
The foundation’s website describes its grantmaking focus as primary and secondary education, youth services, and social services. Its 2025 filing also categorized grants in areas including community and social services, arts, education, and youth.
The grantees’ own descriptions illustrate the range of organizations supported. Tipping Point Community says it builds community to advance promising poverty-fighting solutions. Youth Homes says it supports foster youth and underserved young people through mental and behavioral health services. First Graduate says it helps students become the first in their families to graduate from college.
Grantmaking
In filing year 2025, the foundation reported 149 grants totaling $1,151,000. Grants ranged from $500 to $50,000, with a median of $5,000. Among the largest awards were $50,000 to the American Red Cross in Boone, Iowa; $35,000 to St Luke Presbyterian Church in San Rafael, California; and $25,000 each to McCallum Theatre, Meridian International Center, Nova Southeastern University, San Francisco General Hospital Foundation, the Posse Foundation, Tipping Point Community, and UCSF Foundation.
The foundation’s website describes a two-stage process. Organizations that have never received funding or have not received it within the prior five years must submit a Letter of Intent. Proposals are submitted only by organizations invited to do so or organizations funded within the prior five years. Applicants are directed to the website for the required materials and guidelines. The 2026 deadlines have passed.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Richard J Guggenhime as president and treasurer, Lisa G Hauswirth as secretary, and Charles H Clifford Jr, Patricia Capbarat, and Andrew Guggenhime as directors. The filing identifies Christopher Quinn as grant manager.
The Stanley S Langendorf Foundation is led by Richard J. Guggenhime, President since 2023 (on filings since 2019); none of the 5 officers listed in 2025 report compensation.
Officers on the 2025 filing
Richard J. Guggenhime
President
President & T → President & Treasurer, 2022
President & Treasurer → President, 2023
On filings since 2019
1 hr/week
No compensation reported
Andrew Guggenhime
Director
On filings since 2019
1 hr/week
No compensation reported
Charles H. Clifford Jr.
Director
On filings since 2019
1 hr/week
No compensation reported
Patricia Capbarat
Director
On filings since 2019
1 hr/week
No compensation reported
Lisa G. Hauswirth
Secretary
On filings since 2019
1 hr/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 The Stanley S Langendorf Foundation
How much does The Stanley S Langendorf Foundation give each year?
The Stanley S Langendorf Foundation gave $1.2M across 149 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $955K across 134 grants.
What is The Stanley S Langendorf Foundation's typical grant size?
The Stanley S Langendorf Foundation's median grant in 2025 was $5,000, and its average grant was $7,725, across 149 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from The Stanley S Langendorf Foundation that year got $7K on average.
Where does The Stanley S Langendorf Foundation give grants?
The Stanley S Langendorf Foundation gives mostly in California: 83% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were San Francisco, CA (76 grants), San Rafael, CA (7 grants), Menlo Park, CA (5 grants) and Palm Desert, CA (4 grants).
Does The Stanley S Langendorf Foundation give general operating support?
Not in 2025: none of the 149 grants with a stated purpose on The Stanley S Langendorf Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Community / Social Services" (82 grants), "Youth" (33 grants) and "Education" (25 grants).
Who are The Stanley S Langendorf Foundation's largest grantees?
The Stanley S Langendorf Foundation's largest 2025 grantees include UCSF Foundation ($80,000 across 5 grants), American Red Cross ($55,000 across 2 grants) and McCallum Theatre ($40,000 across 2 grants), according to its 2025 IRS Form 990-PF. Together they received 15% of its itemized 2025 grant dollars.
How large is The Stanley S Langendorf Foundation?
The Stanley S Langendorf Foundation reported $4.4M in total assets on its 2025 IRS Form 990-PF. It paid out $1.2M in qualifying distributions that year, against a required minimum of $299K (roughly 5% of its investment assets).
What does The Stanley S Langendorf Foundation fund?
The foundation’s website describes its grantmaking focus as primary and secondary education, youth services, and social services. Its 2025 filing also categorized grants in areas including community and social services, arts, education, and youth. See mission & focus areas ↑
How do I apply for a grant from The Stanley S Langendorf Foundation?
Submit a Letter of Intent if the organization has never been funded or has not received funding within the prior five years. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is The Stanley S Langendorf Foundation's EIN?
The Stanley S Langendorf Foundation's EIN (Employer Identification Number) is 94-2861512. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated October 2026.
Data update history
(3)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2019 (received by the IRS July 6, 2020)
- Added Form 990-PF for fiscal year 2025 (received by the IRS July 7, 2026)
- IRS filings on file for fiscal years 2020–2024
Explore Open Grants
Browse active grant opportunities in The Stanley S Langendorf Foundation's focus areas in our free grants database
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Cite this profile
Grantable. (2026). The Stanley S Langendorf Foundation funder profile. GrantGraph. Retrieved October 9, 2026, from https://grantable.co/funders/the-stanley-s-langendorf-foundation-morg_5fdaf928e6014d1b817aa06a95fa7295
BibTeX
@misc{grantable_942861512_2026,
author = {{Grantable}},
title = {{The Stanley S Langendorf Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/the-stanley-s-langendorf-foundation-morg_5fdaf928e6014d1b817aa06a95fa7295},
note = {Accessed 2026-10-09. 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 Stanley S Langendorf 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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