Thomas L Kempner Jr Foundation
The Thomas L Kempner Jr Foundation is a private foundation based in Southampton, New York. Its 2024 filing reports $11.6 million in grants to 22 organizations, with recipients including health, education, conservation, and civic organizations.
Thomas L Kempner Jr Foundation at a glance
In short: Thomas L Kempner Jr Foundation gave $11.6M across 22 grants in 2024 (avg $526K), mostly in New York. 17% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $11,575,752
- -34.2% vs 2023
- Grants made (2024)
- 22
- -12.0% vs 2023
- Average grant
- $526,171
- -25.2% vs 2023
- Median grant
- $225,000
- Total assets
- $326,388,820
- +6.4% vs 2023
- New grantees (estimate)
- 17% first-time grantees (3 of 18, 2024; small sample)
- Primary geography
- New York (85% 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 Thomas L Kempner Jr Foundation
- 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: 26 Hill Street 340, Southampton, NY 11968
Phone: (631) 517-3856
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Thomas L Kempner Jr Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was Jewish Communal Fund ($3.2M). Together the top 10 received $10.2M.
Grant Size Distribution
90 grants across all recorded years
The most common grant size was in the $100–250K range: 21 grants of 90 (23%).
Geographic Focus
Where this funder awards grants
In 2024, 85% of grant dollars went to recipients in New York. Other recipient states were California (5%), Connecticut (4%), Massachusetts (2%), and Virginia (2%).
Grant Distribution by State
Share of 2024 grant dollars across all 22 itemized grants.
Cities
Is Thomas L Kempner Jr Foundation open to new grantees?
17%
first-time grantees, 2024
In 2024, 3 of 18 grantees (17%) were first-time recipients. With only 18 grantees, that is a small sample: one grantee more or less moves the share by about 6 points. First grants averaged $270K; repeat grants $718K. How we count
Medians: $200K first-time, $255K repeat.
- 78% of 2024 grantees were also funded in 2023. Method
- Giving fell 30% from 2021 to 2024. Method
- In 2024 it paid out 78% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. 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 $10.9M (2020) to $17.6M (2023). In 2024 it made 22 grants totaling $11.6M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Jewish Communal Fund New York, NY | Daf replenishment -thomas l. Kempner jr. Foundation inc. Fund | $3,235,000 |
| Mount Sinai Hospital New York, NY | President's Strategic Initiative Fund | $2,000,000 |
| Planned Parenthood Federation of America Inc New York, NY | Provider Recruitment, Patient Navigation & Epic | $1,250,000 |
| Wildlife Conservation Society Bronx, NY | Marine Strongholds and Blue Carbon | $1,000,000 |
| Harlem Village Academies New York, NY | Accelerated Mathematics Phase II | $944,000 |
| Open Space Institute Inc New York, NY | Greenway Trails Acquisition Program | $519,660 |
| Transportation Alternatives Inc New York, NY | General Operating | $400,000 |
| Businesses United in Investing Lending and Development Redwood City, CA | Support and Licensed Partnerships | $350,000 |
| Achievement First Charter School New Haven, CT | CT General Operations | $250,000 |
| American Museum of Natural History New York, NY | Futter Fund for Science and Society | $250,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $326,388,820 | $12,343,171 | $12,598,256 | $11,575,752 | 22 | $11,868,453 | $16,182,615 | $15,307,518 |
| 2023 | $306,675,675 | $4,170,879 | $19,593,149 | $17,594,561 | 25 | $17,894,120 | $13,172,209 | $14,583,908 |
| 2022 | $307,756,994 | $1,394,172 | $17,852,745 | $16,443,883 | 18 | $16,683,682 | $18,828,671 | $15,500,348 |
| 2021 | $328,355,645 | $44,754,721 | $18,288,236 | $16,496,043 | 16 | $16,880,905 | $39,567,941 | $14,213,029 |
| 2020 | $283,533,640 | $23,000,058 | $11,735,963 | $10,901,065 | 9 | — | $22,890,341 | $11,704,162 |
Under IRS private-foundation payout rules, Thomas L Kempner Jr Foundation reported a distributable amount of $15.3M for 2024 — 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 filing does not provide a separate charitable mission statement. Its 2024 grants show support for organizations working in several areas. For example, Mount Sinai Hospital describes its mission as advancing medicine through patient care, teaching, and research; Planned Parenthood Federation of America describes work providing reproductive and related health care; and the Wildlife Conservation Society says it works to save wildlife and wild places through science, conservation, and education. Other recipients describe work in land conservation, safe and sustainable streets, youth career and entrepreneurship education, and natural-science research and education.
Grantmaking
In 2024, the foundation made 22 grants totaling $11,575,752. Grants ranged from $5,000 to $3,235,000, with a median grant of $225,000. Among the largest awards were $3,235,000 to Jewish Communal Fund for donor-advised fund replenishment; $2,000,000 to Mount Sinai Hospital for its President’s Strategic Initiative Fund; $1,250,000 to Planned Parenthood Federation of America for provider recruitment, patient navigation, and EPIC; $1,000,000 to the Wildlife Conservation Society for marine strongholds and blue carbon; and $944,000 to Harlem Village Academies for Accelerated Mathematics Phase II.
The foundation also awarded $519,660 to Open Space Institute for its Greenway Trails Acquisition Program, $400,000 to Transportation Alternatives for general operating support, and $350,000 to Businesses United in Investing, Lending and Development for support and licensed partnerships.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Thomas Kempner Jr. as president and treasurer; Katheryn C Patterson as vice president and secretary; Trevor Kempner, Thomas N Kempner, and Jessica S Kempner as directors; and Holly R Raub as chief administrative officer.
Thomas L Kempner Jr Foundation is led by Thomas Kempner Jr., President & Treasurer on every filing since 2020; 1 of 6 officers listed in 2024 is compensated.
Officers on the 2024 filing
Thomas Kempner Jr.
President & Treasurer
On filings since 2020
2 hrs/week
No compensation reported
Jessica S. Kempner
Director
On filings since 2020
0.5 hrs/week
No compensation reported
Thomas N. Kempner
Director
On filings since 2020
0.5 hrs/week
No compensation reported
Trevor Kempner
Director
On filings since 2020
0.5 hrs/week
No compensation reported
Holly R. Raub
Chief Administrative Officer
On filings since 2020
24 hrs/week
$80K (2020) → $110K (2024)
Katheryn C. Patterson
Vice President & Secretary
On filings since 2020
0.5 hrs/week
No compensation reported
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.
Compensation Overview
From 2024 IRS filing
The highest reported compensation on the 2024 filing was $110K, to Holly R Raub (Chief Administrative Officer).
Frequently asked questions about Thomas L Kempner Jr Foundation
How much does Thomas L Kempner Jr Foundation give each year?
Thomas L Kempner Jr Foundation gave $11.6M across 22 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $17.6M across 25 grants.
What is Thomas L Kempner Jr Foundation's typical grant size?
Thomas L Kempner Jr Foundation's median grant in 2024 was $225,000, and its average grant was $526,171, across 22 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from Thomas L Kempner Jr Foundation that year got $270K on average.
Where does Thomas L Kempner Jr Foundation give grants?
Thomas L Kempner Jr Foundation gives mostly in New York: 85% 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 New York, NY (8 grants), New Haven, CT (4 grants), Boston, MA (2 grants) and Stanford, CA (2 grants).
Does Thomas L Kempner Jr Foundation give general operating support?
Yes: 18% of Thomas L Kempner Jr Foundation's 2024 grants with a stated purpose (4 of 22) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are Thomas L Kempner Jr Foundation's largest grantees?
Thomas L Kempner Jr Foundation's largest 2024 grantees include Jewish Communal Fund ($3,235,000), Mount Sinai Hospital ($2,000,000) and Planned Parenthood Federation of America Inc ($1,250,000), according to its 2024 IRS Form 990-PF. Together they received 56% of its itemized 2024 grant dollars.
How large is Thomas L Kempner Jr Foundation?
Thomas L Kempner Jr Foundation reported $326.4M in total assets on its 2024 IRS Form 990-PF. It paid out $11.9M in qualifying distributions that year, against a required minimum of $15.3M (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 Thomas L Kempner Jr Foundation fund?
The filing does not provide a separate charitable mission statement. Its 2024 grants show support for organizations working in several areas. See mission & focus areas ↑
How do I apply for a grant from Thomas L Kempner Jr Foundation?
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 Thomas L Kempner Jr Foundation's EIN?
Thomas L Kempner Jr Foundation's EIN (Employer Identification Number) is 13-3407819. IRS Form 990 filing data is available on this page for 2020–2024.
Does Thomas L Kempner Jr 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 October 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). Thomas L Kempner Jr Foundation funder profile. GrantGraph. Retrieved October 11, 2026, from https://grantable.co/funders/thomas-l-kempner-jr-foundation-morg_42cd06d10ea74c5f83fef3dbc87c7db9
BibTeX
@misc{grantable_133407819_2026,
author = {{Grantable}},
title = {{Thomas L Kempner Jr Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/thomas-l-kempner-jr-foundation-morg_42cd06d10ea74c5f83fef3dbc87c7db9},
note = {Accessed 2026-10-11. 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 Thomas L Kempner Jr 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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