Funding search · EIN 133407819 · Southampton, NY
Thomas L Kempner Jr Foundation
A private foundation (files IRS Form 990-PF). Most private foundations do not take unsolicited applications; the route in is usually a program officer.
- 65
- grants reported
- $45.6M
- total given
- 2022–2024
- filing years
- $250,000
- median grant
Based on grants this organization reported to the IRS for tax years 2022–2024. This is what they filed, not a complete record of their giving, and recent years may be incomplete because filings lag.
What they fund
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Funding pattern
What this funder pays for, at what size, and how to position adjacent work. Read from their filings, with every number checked against the record.
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Top recipients
Repeat recipients are the strongest signal of whether a funder has an open door or quietly re-funds the same organizations.
- Central Park Conservancy4 grants · $11.1M
- Jewish Communal Fund3 grants · $10.2M
- Mount Sinai Hospital3 grants · $6.0M
- Wildlife Conservation Society3 grants · $2.5M
- Planned Parenthood Federation of America2 grants · $2.5M
- Harlem Village Academies3 grants · $2.4M
- American Museum of Natural History2 grants · $1.3M
- Transportation Alternatives3 grants · $1.2M
- Businesses United in Investing Lending and Development3 grants · $1.1M
- Juilliard School2 grants · $1.0M
Giving over time
Grant history
All 65 reported grants, largest first.
- $5.5M
Central Park Conservancy · New York, NY · 2022
Support of the endowment component of the conservancy's for all campaign
- $5.3M
Central Park Conservancy · New York, NY · 2023
Harlem meer pool and ice rink development
- $4.2M
Jewish Communal Fund · New York, NY · 2022
General unrestricted
- $3.2M
Jewish Communal Fund · New York, NY · 2024
Daf replenishment -thomas l. Kempner jr. Foundation inc. Fund
- $2.9M
Jewish Communal Fund · New York, NY · 2023
Daf replenishment -thomas l. Kempner jr. Foundation inc. Fund
- $2.0M
Mount Sinai Hospital · New York, NY · 2024
President's strategic initiative fund
- $2.0M
Mount Sinai Hospital · New York, NY · 2023
Pediatric cardiac intensive care unit - president's strategic initiative fund
- $2.0M
Mount Sinai Hospital · New York, NY · 2022
To be used solely to support the pediatric cardiac intensive care unit, a priority program under the president's strategic initiative fund, as recommended by kenneth l. Davis, md, president and chief executive officer o… read allTo be used solely to support the pediatric cardiac intensive care unit, a priority program under the president's strategic initiative fund, as recommended by kenneth l. Davis, md, president and chief executive officer of the mount sinai health system. less
- $1.3M
Planned Parenthood Federation of America · New York, NY · 2024
Provider recruitment, patient navigation & epic
- $1.3M
Planned Parenthood Federation of America · New York, NY · 2023
Provider recruitment, patient navigation & epic
- $1.3M
Wildlife Conservation Society · Bronx, NY · 2023
Marine strongholds/mpa 2030 and blue carbon
- $1.0M
Wildlife Conservation Society · Bronx, NY · 2024
Marine strongholds and blue carbon
- $1.0M
American Museum of Natural History · New York, NY · 2022
To support the new gilder center for science, education and innovation
- $944,000
Harlem Village Academies · New York, NY · 2024
Accelerated mathematics phase ii
- $879,000
Columbia University Medical Center · New York, NY · 2023
Vagelos college early-onset osteoporosis fund
- $819,000
Harlem Village Academies · New York, NY · 2023
Accelerated mathematics phase ii
- $614,106
Open Space Institute Land Trust · New York, NY · 2022
Grant exclusively for project expenses associated with the essex hudson greenway.
- $600,000
Harlem Village Academies · New York, NY · 2022
Funding will solely support the launch of hva's accelerated mathematics program
- $519,660
Open Space Institute · New York, NY · 2024
Greenway trails acquisition program
- $500,000
Juilliard School · New York, NY · 2023
Nucleus fund pledge
- $500,000
Juilliard School · New York, NY · 2022
Designated for the nucleus fund, to lay the foundation for a successful capital campaign by addressing critical priorities that need to be resourced in the early phase.
- $400,000
Transportation Alternatives · New York, NY · 2024
General operating
- $400,000
Transportation Alternatives · New York, NY · 2023
3 year general operating pledge
- $400,000
Transportation Alternatives · New York, NY · 2022
General unrestricted
- $350,000
Businesses United in Investing Lending and Development · Redwood City, CA · 2024
Support and licensed partnerships
- $350,000
Businesses United in Investing Lending and Development · Redwood City, CA · 2023
Nyc & bay area operations
- $350,000
Businesses United in Investing Lending and Development · Redwood City, CA · 2022
New york city operations and program growth bay area operations and social entrepreneurship - $175,000/yrnational growth through digitization of curriculum and licensed partnerships $50,000additional licensed partnershi… read allNew york city operations and program growth bay area operations and social entrepreneurship - $175,000/yrnational growth through digitization of curriculum and licensed partnerships $50,000additional licensed partnerships contingency - $75,000/yr less
- $338,687
Open Space Institute Land Trust · New York, NY · 2023
Essex-hudson greenway
- $332,208
Bletchley Park · 2023
Block e learning centre
- $250,000
Achievement First Charter School · New Haven, CT · 2024
Ct general operations
- $250,000
American Museum of Natural History · New York, NY · 2024
Futter fund for science and society
- $250,000
Harvard Business School · Boston, MA · 2024
Dean's innovation fund
- $250,000
Achievement First Charter School · New Haven, CT · 2023
Ct general operations
- $250,000
Harvard Business School · Boston, MA · 2023
Dean's innovation fund
- $250,000
Achievement First Charter School · New Haven, CT · 2022
General unrestricted
- $250,000
Wildlife Conservation Society · Bronx, NY · 2022
Mpa fund - western indian ocean, bay of bengal or papua new guinea.
- $211,111
Bletchley Park · 2022
To be used solely to support the transformation of block e at bletchley park into a new learning centre, comprising a 250-seat lecture theatre, eight learning spaces, and associated support facilities ('the project').
- $200,000
Rare · Arlington, VA · 2024
Rare brazil's fish forever program - community-led management of the amazon coast
- $185,000
Tides Center · San Francisco, CA · 2022
Fair and just prosecution
- $175,425
Bletchley Park · 2024
Block b learning centre
- $175,000
Tides Center · San Francisco, CA · 2023
Fair and just prosecution
- $170,000
Stanford University Board of Trustees · Stanford, CA · 2022
Sallyanne payton fellowship fund, the stanford center for racial justice, the black law students association award fund
- $166,667
Central Park Conservancy · New York, NY · 2024
Essential central park fund
- $166,666
Central Park Conservancy · New York, NY · 2023
Essential central park fund
- $150,000
Tides Center · San Francisco, CA · 2024
Da office project
- $130,000
Harvard Business School · Boston, MA · 2022
General unrestricted
- $120,000
Columbia University Medical Center · New York, NY · 2022
For the benefit of its vagelos college of physicians and surgeons, department of medicine, division of endocrinology.
- $100,000
Yale University · New Haven, CT · 2024
Fund for civic engagement and discourse
- $100,000
Yale University · New Haven, CT · 2024
Fund for yale school of engineering & applied science
- $100,000
Roundabout Theatre Company · New York, NY · 2023
General operations grant
- $100,000
Yale University · New Haven, CT · 2023
Kempner fund for yale college dean's discretionary fund for civic engagement and discourse
- $100,000
Yale University · New Haven, CT · 2023
Kempner fund for yale school of engineering & applied science
- $90,000
Parks & Trails · Albany, NY · 2024
Greenways across new york state via the est 2.0 proposal
- $75,000
Stanford University Board of Trustees · Stanford, CA · 2024
Criminal justice center/three strikes project
- $75,000
Stanford University Board of Trustees · Stanford, CA · 2023
Criminal justice center/three strikes project
- $45,000
Stanford University Board of Trustees · Stanford, CA · 2024
Sallyanne payton fellowship fund, center for racial justice and blsa fund
- $45,000
Stanford University Board of Trustees · Stanford, CA · 2023
Sallyanne payton fellowship fund, center for racial justice and blsa fund
- $25,000
Boston Children'S Hospital Trust · Boston, MA · 2023
Kabuki syndrome research
- $25,000
Boston Children'S Hospital Trust · Boston, MA · 2022
To support kabuki syndrome research at boston children's hospital, under the direction of olaf bodamer, md, phd, facmg, faap, associate chief of genetics and genomics.
- $20,000
Yale University · New Haven, CT · 2024
Annual fund
- $10,000
Philharmonic-Symphony Society of New York · New York, NY · 2023
Orchestra's education program grant
- $10,000
Yale University · New Haven, CT · 2023
Annual fund
- $10,000
Yale University · New Haven, CT · 2022
General unrestricted
- $5,000
Harvard Business School · Boston, MA · 2024
Annual fund
- $5,000
Harvard Business School · Boston, MA · 2023
Annual fund
Who else funds this kind of work
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- Gs Donor Advised Philanthropy Fund19,135 grants · $6.79B
Similar purposes
- The Leona M and Harry B Helmsley2,251 grants · $1.69B
- Impactassetsinc7,851 grants · $1.04B
- Marin Community Foundation5,238 grants · $990.8M
Similar grant size
- Corporation for Public Broadcasting3,863 grants · $2.33B
- Foundation To Promote Open Society3,312 grants · $1.72B
- The William & Flora Hewlett Foundation5,652 grants · $1.75B
Grants already paid are the record; PaperOrbit reads your paper and finds the funders whose record matches it — then explains why.
Search funders like this oneSource: IRS Form 990-PF, Part XV, as filed by the foundation. These are grants already paid — a record of what this funder backs, not an open call.

