Michael R & Kathleen B Linburn Foundation
MICHAEL R & KATHLEEN B LINBURN is a private foundation based in San Francisco, California. In its 2025 filing, it reported grants to four organizations, all in New York.
Michael R & Kathleen B Linburn Foundation at a glance
In short: Michael R & Kathleen B Linburn Foundation gave $4K across 3 grants in 2026 (avg $1K), mostly in California. Source: 2026 IRS Form 990-PF.
- Annual giving (2026)
- $4,115
- -62.6% vs 2025
- Grants made (2026)
- 3
- -25.0% vs 2025
- Average grant
- $1,372
- -50.1% vs 2025
- Median grant
- $1,000
- Total assets
- $774,698
- -1.1% vs 2025
- Primary geography
- California (76% of itemized 2026 grant dollars)
- Latest 990 filing
- Form 990-PF, 2026 View filing
Data from IRS Form 990-PF, 2026; updated November 2026.
How to apply to Michael R & Kathleen B Linburn 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: 3191 Washington St Apt 6, San Francisco, CA 94115
Phone: (415) 531-5044
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Michael R & Kathleen B Linburn Foundation funds
How this funder distributes its grants
Top Recipients
Top 3 recipients in 2026
The largest 2026 recipient was UHS & Breakthrough Summerbridge Annual FD ($3K). Together the top 3 received $4K.
Grant Size Distribution
51 grants across all recorded years
The most common grant size was under $50K: 49 grants of 51 (96%).
Geographic Focus
Where this funder awards grants
All grant dollars reported for 2025 went to recipients in New York.
Grant Distribution by State
Share of 2026 grant dollars across all 3 itemized grants.
Cities
How Michael R & Kathleen B Linburn Foundation gives
- Giving fell 98% from 2023 to 2026. Method
- In 2026 it paid out 16% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2026, annual grant giving ranged from $4K (2026) to $1.1M (2021). In 2026 it made 3 grants totaling $4K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| UHS & Breakthrough Summerbridge Annual FD San Francisco, CA | Annual Fund | $2,500 |
| President & Fellows of Harvard Coll Cambridge, MA | Harvard Kennedy School FD | $1,000 |
| San Francisco Boys Choir San Francisco, CA | General | $615 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2026 | $774,698 | — | $8,245 | $4,115 | 3 | $6,005 | — | $38,357 |
| 2025 | $782,943 | $27,753 | $20,107 | $11,000 | 4 | $12,840 | $25,813 | $38,286 |
| 2024 | $775,297 | $17,210 | $299,354 | $288,300 | 11 | $290,040 | $13,262 | $45,363 |
| 2023 | $1,057,441 | $330,864 | $239,760 | $230,375 | 13 | $232,368 | $323,472 | $55,015 |
| 2022 | $966,337 | $110,717 | $119,762 | $94,900 | 20 | $97,100 | $96,847 | $70,654 |
| 2021 | $975,382 | $671,481 | $1,119,335 | $1,086,692 | 11 | — | $645,228 | $82,369 |
Under IRS private-foundation payout rules, Michael R & Kathleen B Linburn Foundation reported a distributable amount of $38K for 2026 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The foundation’s mission is not stated in the available information. Its 2025 grants included support for a church, a church-related organization, a city gardens club, and Health Advocates for Older People. That grantee describes its mission as promoting safe and healthy aging through programs supporting independent living, physical wellbeing, and social interaction for women and men.
Grantmaking
In 2025, the foundation reported $11,000 in grants across four recipients. Grants ranged from $500 to $5,000, with a median of $2,750. Recipients included Health Advocates for Older People ($5,000), St Sebastian Roman Catholic Church ($5,000), Church of the Incarnation ($500), and The City Gardens Club of NYC ($500). The listed purposes were general or general operating support.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Kathleen B Linburn and Carol Linburn as trustees.
Michael R & Kathleen B Linburn Foundation's 2026 filing lists 2 officers; none of the 2 officers listed in 2026 report compensation.
Officers on the 2026 filing
Kathleen B. Linburn
Trustee
On filings since 2021
No compensation reported
Carol Linburn
Trustee
On filings since 2024
No compensation reported
Data from IRS Form 990 filings, 2021–2026. "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 Michael R & Kathleen B Linburn Foundation
How much does Michael R & Kathleen B Linburn Foundation give each year?
Michael R & Kathleen B Linburn Foundation gave $4K across 3 grants in 2026, according to its 2026 IRS Form 990-PF. In 2025 it gave $11K across 4 grants.
What is Michael R & Kathleen B Linburn Foundation's typical grant size?
Michael R & Kathleen B Linburn Foundation's median grant in 2026 was $1,000, and its average grant was $1,372, across 3 grants on its 2026 IRS Form 990-PF.
Where does Michael R & Kathleen B Linburn Foundation give grants?
Michael R & Kathleen B Linburn Foundation gives mostly in California: 76% of the grant dollars itemized on its 2026 IRS Form 990-PF went to recipients there. The next largest state was Massachusetts (24%). The most frequent recipient cities were San Francisco, CA (2 grants).
Does Michael R & Kathleen B Linburn Foundation give general operating support?
Yes: 67% of Michael R & Kathleen B Linburn Foundation's 2026 grants with a stated purpose (2 of 3) were for general or operating support, per its 2026 IRS Form 990-PF.
How large is Michael R & Kathleen B Linburn Foundation?
Michael R & Kathleen B Linburn Foundation reported $775K in total assets on its 2026 IRS Form 990-PF. It paid out $6K in qualifying distributions that year, against a required minimum of $38K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
What does Michael R & Kathleen B Linburn Foundation fund?
The foundation’s mission is not stated in the available information. Its 2025 grants included support for a church, a church-related organization, a city gardens club, and Health Advocates for Older People. See mission & focus areas ↑
How do I apply for a grant from Michael R & Kathleen B Linburn 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 Michael R & Kathleen B Linburn Foundation's EIN?
Michael R & Kathleen B Linburn Foundation's EIN (Employer Identification Number) is 13-6087036. IRS Form 990 filing data is available on this page for 2021–2026.
Does Michael R & Kathleen B Linburn Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated November 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2026 (received by the IRS September 21, 2026)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS October 14, 2021)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS October 8, 2022)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS November 9, 2023)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS April 10, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS February 2, 2026)
- IRS filings on file for fiscal years 2021–2025
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