Thomas L Kempner Jr Foundation | Foundation Profile

GrantBay analyzes IRS Form 990-PF data to help grant seekers find fit funders like Thomas L Kempner Jr Foundation. Data shown is extracted from Form 990-PF filings.

EIN: 13-3407819

Foundation Overview

Based in Southampton, NY, Thomas L Kempner Jr Foundation has awarded 119 grants totaling $99,767,707 to organizations in Connecticut, New York and 2 other states, plus international recipients. Individual grants range from $5,000 to $5,478,666, with a median award of $250,000.

Latest Tax Year
2023
Total Giving (all years)
$99,767,707
Total Assets
$306,675,675
Median Grant (all grants)
$250,000

Latest Form 990-PF Snapshot

Total Grants
25
Median Grant
$250,000
% Median Grant Decline
-17% (vs previous year)
Data extracted from IRS Form 990-PF filings. Last filing year: February 2026

Foundation Intelligence

Advanced analytics and strategic insights to help nonprofit organizations assess grant opportunities and optimize their application strategies

New Applicant Friendliness
Closed Network: 12%

3 of 25 recipients (12%) were new grantees. Foundation maintains tight relationships with established partners. New applicants rarely succeed without insider connections.

Geographic Focus
New York

60% of grants are awarded in New York, with additional funding distributed across 4 other locations. The foundation balances regional focus with broader geographic diversity. Within New York, funding concentrates in New York (93%), Bronx (7%).

Funding Trajectory
+223%

Strong 223% growth in annual giving over 7 years indicates expanding philanthropic capacity and increasing opportunities for grant seekers. This upward trajectory suggests growing foundation resources and commitment.

Program Areas
General Purposes + 4 others

Diversified giving across multiple program areas with primary emphasis on general purposes (42%). This broad approach suggests openness to various causes and innovative cross-sector solutions.

Where is The Money Going?

Loading geographic data...
Loading chart...
Loading chart...
Loading chart...

Grants & Funding

Analyzing past grantees provides valuable insights into Thomas L Kempner Jr Foundation's funding preferences, organizational priorities, and grant making patterns. This historical data helps potential applicants understand the foundation's strategic focus and identify successful funding approaches.

Name Amount Location Purpose Year
Achievement First Charter School $250,000 New Haven, CT, US Ct General Operations 2023
Bletchley Park $332,208 Bletchley, Foreign, UK Block E Learning Centre 2023
Boston Children's Hospital Trust $25,000 Boston, MA, US Kabuki Syndrome Research 2023
Businesses United In Investing Lending And Development $350,000 Redwood City, CA, US Nyc & Bay Area Operations 2023
Central Park Conservancy $166,666 New York, NY, US Essential Central Park Fund 2023
Columbia University Medical Center $879,000 New York, NY, US Vagelos College Early-onset Osteoporosis Fund 2023
Harvard Business School $250,000 Boston, MA, US Dean's Innovation Fund 2023
Jewish Communal Fund $2,850,000 New York, NY, US Daf Replenishment -Thomas L. Kempner Jr. Foundation Inc. Fund 2023
Juilliard School $500,000 New York, NY, US Nucleus Fund Pledge 2023
Mount Sinai Hospital $2,000,000 New York, NY, US Pediatric Cardiac Intensive Care Unit - President's Strategic Initiative Fund 2023
Stanford University Board Of Trustees $45,000 Stanford, CA, US Sallyanne Payton Fellowship Fund, Center For Racial Justice And Blsa Fund 2023
Tides Center $175,000 San Francisco, CA, US Fair And Just Prosecution 2023
Transportation Alternatives Inc $400,000 New York, NY, US 3 Year General Operating Pledge 2023
Wildlife Conservation Society $1,250,000 Bronx, NY, US Marine Strongholds/mpa 2030 And Blue Carbon 2023
Yale University $10,000 New Haven, CT, US Annual Fund 2023
Philharmonic-symphony Society Of New York Inc $10,000 New York, NY, US Orchestra's Education Program Grant 2023
Planned Parenthood Federation Of America Inc $1,250,000 New York, NY, US Provider Recruitment, Patient Navigation & Epic 2023
Roundabout Theatre Company Inc $100,000 New York, NY, US General Operations Grant 2023
Harlem Village Academies $819,000 New York, NY, US Accelerated Mathematics Phase Ii 2023
Open Space Institute Land Trust Inc $338,687 New York, NY, US Essex-hudson Greenway 2023
Stanford University Board Of Trustees $75,000 Stanford, CA, US Criminal Justice Center/three Strikes Project 2023
Central Park Conservancy $5,314,000 New York, NY, US Harlem Meer Pool And Ice Rink Development 2023
Yale University $100,000 New Haven, CT, US Kempner Fund For Yale School Of Engineering & Applied Science 2023
Yale University $100,000 New Haven, CT, US Kempner Fund For Yale College Dean's Discretionary Fund For Civic Engagement And Discourse 2023
Harvard Business School $5,000 Boston, MA, US Annual Fund 2023
Achievement First Charter School $250,000 New Haven, CT, US General Unrestricted 2022
American Museum Of Natural History $1,000,000 New York, NY, US To Support The New Gilder Center For Science, Education And Innovation 2022
Bletchley Park $211,111 Bletchley, Foreign, UK 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'). 2022
Boston Children's Hospital Trust $25,000 Boston, MA, US 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. 2022
Businesses United In Investing Lending And Development $350,000 Redwood City, CA, US 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 Partnerships Contingency - $75,000/yr 2022
Central Park Conservancy $5,478,666 New York, NY, US Support Of The Endowment Component Of The Conservancy's For All Campaign 2022
Columbia University Medical Center $120,000 New York, NY, US For The Benefit Of Its Vagelos College Of Physicians And Surgeons, Department Of Medicine, Division Of Endocrinology. 2022
Harlem Village Academies $600,000 New York, NY, US Funding Will Solely Support The Launch Of Hva's Accelerated Mathematics Program 2022
Harvard Business School $130,000 Boston, MA, US General Unrestricted 2022
Jewish Communal Fund $4,150,000 New York, NY, US General Unrestricted 2022
Juilliard School $500,000 New York, NY, US 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. 2022
Mount Sinai Hospital $2,000,000 New York, NY, US 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 Of The Mount Sinai Health System. 2022
Open Space Institute Land Trust Inc $614,106 New York, NY, US Grant Exclusively For Project Expenses Associated With The Essex Hudson Greenway. 2022
Stanford University Board Of Trustees $170,000 Stanford, CA, US Sallyanne Payton Fellowship Fund, The Stanford Center For Racial Justice, The Black Law Students Association Award Fund 2022
Tides Center $185,000 San Francisco, CA, US Fair And Just Prosecution 2022
Transportation Alternatives Inc $400,000 New York, NY, US General Unrestricted 2022
Wildlife Conservation Society $250,000 Bronx, NY, US Mpa Fund - Western Indian Ocean, Bay Of Bengal Or Papua New Guinea. 2022
Yale University $10,000 New Haven, CT, US General Unrestricted 2022
Achievement First Charter School $250,000 New Haven, CT, US General Unrestricted 2022
American Museum Of Natural History $1,000,000 New York, NY, US To Support The New Gilder Center For Science, Education And Innovation 2022
Bletchley Park $211,111 Bletchley, Foreign, UK 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'). 2022
Boston Children's Hospital Trust $25,000 Boston, MA, US 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. 2022
Businesses United In Investing Lending And Development $350,000 Redwood City, CA, US 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 Partnerships Contingency - $75,000/yr 2022
Central Park Conservancy $5,478,666 New York, NY, US Support Of The Endowment Component Of The Conservancy's For All Campaign 2022
Columbia University Medical Center $120,000 New York, NY, US For The Benefit Of Its Vagelos College Of Physicians And Surgeons, Department Of Medicine, Division Of Endocrinology. 2022
Harlem Village Academies $600,000 New York, NY, US Funding Will Solely Support The Launch Of Hva's Accelerated Mathematics Program 2022
Harvard Business School $130,000 Boston, MA, US General Unrestricted 2022
Jewish Communal Fund $4,150,000 New York, NY, US General Unrestricted 2022
Juilliard School $500,000 New York, NY, US 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. 2022
Mount Sinai Hospital $2,000,000 New York, NY, US 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 Of The Mount Sinai Health System. 2022
Open Space Institute Land Trust Inc $614,106 New York, NY, US Grant Exclusively For Project Expenses Associated With The Essex Hudson Greenway. 2022
Stanford University Board Of Trustees $170,000 Stanford, CA, US Sallyanne Payton Fellowship Fund, The Stanford Center For Racial Justice, The Black Law Students Association Award Fund 2022
Tides Center $185,000 San Francisco, CA, US Fair And Just Prosecution 2022
Transportation Alternatives Inc $400,000 New York, NY, US General Unrestricted 2022
Wildlife Conservation Society $250,000 Bronx, NY, US Mpa Fund - Western Indian Ocean, Bay Of Bengal Or Papua New Guinea. 2022
Yale University $10,000 New Haven, CT, US General Unrestricted 2022
Achievement First Charter School $250,000 New Haven, CT, US General Unrestricted 2022
American Museum Of Natural History $1,000,000 New York, NY, US To Support The New Gilder Center For Science, Education And Innovation 2022
Bletchley Park $211,111 Bletchley, Foreign, UK 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'). 2022
Boston Children's Hospital Trust $25,000 Boston, MA, US 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. 2022
Businesses United In Investing Lending And Development $350,000 Redwood City, CA, US 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 Partnerships Contingency - $75,000/yr 2022
Central Park Conservancy $5,478,666 New York, NY, US Support Of The Endowment Component Of The Conservancy's For All Campaign 2022
Columbia University Medical Center $120,000 New York, NY, US For The Benefit Of Its Vagelos College Of Physicians And Surgeons, Department Of Medicine, Division Of Endocrinology. 2022
Harlem Village Academies $600,000 New York, NY, US Funding Will Solely Support The Launch Of Hva's Accelerated Mathematics Program 2022
Harvard Business School $130,000 Boston, MA, US General Unrestricted 2022
Jewish Communal Fund $4,150,000 New York, NY, US General Unrestricted 2022
Juilliard School $500,000 New York, NY, US 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. 2022
Mount Sinai Hospital $2,000,000 New York, NY, US 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 Of The Mount Sinai Health System. 2022
Open Space Institute Land Trust Inc $614,106 New York, NY, US Grant Exclusively For Project Expenses Associated With The Essex Hudson Greenway. 2022
Stanford University Board Of Trustees $170,000 Stanford, CA, US Sallyanne Payton Fellowship Fund, The Stanford Center For Racial Justice, The Black Law Students Association Award Fund 2022
Tides Center $185,000 San Francisco, CA, US Fair And Just Prosecution 2022
Transportation Alternatives Inc $400,000 New York, NY, US General Unrestricted 2022
Wildlife Conservation Society $250,000 Bronx, NY, US Mpa Fund - Western Indian Ocean, Bay Of Bengal Or Papua New Guinea. 2022
Yale University $10,000 New Haven, CT, US General Unrestricted 2022
Achievement First Charter School $250,000 New Haven, CT, US General Unrestricted 2021
Central Park Conservancy $5,312,000 New York, NY, US Funding For The Development Of A Pool And Ice Rink Facility At The Harlem Meer. 2021
Harvard Business School $130,000 Boston, MA, US General Unrestricted 2021
Jewish Communal Fund $3,280,000 New York, NY, US General Unrestricted 2021
Open Space Institute Land Trust Inc $855,797 New York, NY, US Grant Exclusively For Project Expenses Associated With The Essex Hudson Greenway. 2021
Peer Health Exchange $200,000 New York, NY, US General Unrestricted 2021
American Museum Of Natural History $1,000,000 New York, NY, US Gilder Center For Science, Education And Innovation. 2021
Boston Children's Hospital Trust $25,000 Boston, MA, US Kabuki Syndrome Research Under The Direction Of Olaf Bodamer, Md, Phd, Facmg, Faap. 2021
Businesses United In Investing Lending And Development $350,000 Redwood City, CA, US Operations And Program Grwoth. Support And Licensed Partnerships. 2021
Columbia University Medical Center $115,000 New York, NY, US For The Benefit Of Its Vagelos College Of Physicians And Surgeons, Department Of Medicine. 2021
Juilliard School $518,246 New York, NY, US For Costs Incurred In The Redesign And Renovation Of The Drama Division Facilities. 2021
Mount Sinai Hospital $4,000,000 New York, NY, US To Support The Pediatric Cardiac Intensive Care Unit. 2021
Stanford University $100,000 Stanford, CA, US Class Of 1975's 45th Reunion Campaign - Immigration And Integration Policy Lab. 2021
Harlem Village Academies $100,000 New York, NY, US Hva's Accelerated Mathematics Program. 2021
Wildlife Conservation Society $250,000 Bronx, NY, US Mpa Fund - Western Indian Ocean, Bay Of Bengal Or Papua New Guinea. 2021
Yale University $10,000 New Haven, CT, US General Unrestricted 2021
Achievement First Charter School $300,000 New Haven, CT, US General Unrestricted 2020
Central Park Conservancy $5,312,000 New York, NY, US General Unrestricted 2020
Harlem Village Academies $500,000 New York, NY, US General Unrestricted 2020
Harvard Business School $5,000 Boston, MA, US General Unrestricted 2020
Jewish Communal Fund $2,525,000 New York, NY, US General Unrestricted 2020
Peer Health Exchange $75,000 New York, NY, US General Unrestricted 2020
Roundabout Theatre Company $1,100,000 New York, NY, US General Unrestricted 2020
The New York Community Trust - Ecap Nyc $250,000 New York, NY, US General Unrestricted 2020
Open Space Institute Land Trust Inc $834,065 New York, NY, US General Unrestricted 2020
American Museum Of Natural History $50,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Build In Business To Learn $200,000 Redwood City, CA, US Unrestricted Grant For Exempt Purposes 2016
Central Park Conservancy $500,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Columbia University $650,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
City Charter School Of The Arts $200,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Phe -hva Forgiveness $500,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Harvard Business School $500,000 Boston, MA, US Unrestricted Grant For Exempt Purposes 2016
Juiliard School $50,389 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Phe - Ny Chapter $110,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Phe - Pledge $200,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Roundabout Theatre $375,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Stanford University $100,000 Stanford, CA, US Unrestricted Grant For Exempt Purposes 2016
University Settlement Society $5,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Wildlife Conservation $65,000 New York, NY, US Unrestricted Grant For Exempt Purposes 2016
Yale University $1,939,000 New Haven, CT, US Unrestricted Grant For Exempt Purposes 2016

Foundations Similar to Thomas L Kempner Jr Foundation

Discover 5 foundations with comparable assets ($225,613,681-$375,348,756), similar grant patterns, and geographic focus in NY that may also align with your organization's funding needs and grant seeking strategy.

Foundation Name Total Assets Typical Grant Size Service Area Similarity Match

EIN: 13-3132117 | 25 grants awarded
$334,765,569
(≈ Similar)
$200,000
median grant
Manhasset, NY
Same state
95%
Excellent match

EIN: 23-7441901 | 669 grants awarded
$363,159,297
(≈ Similar)
$180,000
median grant
Rye Brook, NY
Same state
91%
Excellent match

EIN: 13-3675545 | 464 grants awarded
$370,474,581
(↑ Larger)
$200,000
median grant
New York, NY
Same state
90%
Excellent match

EIN: 13-3252800 | 28 grants awarded
$375,348,756
(↑ Larger)
$500,000
median grant
New York, NY
Same state
89%
Excellent match

EIN: 84-2144591 | 117 grants awarded
$225,613,681
(↓ Smaller)
$250,000
median grant
New York, NY
Same state
87%
Excellent match

Contact Information

Official contact details for Thomas L Kempner Jr Foundation as registered with the IRS. These details are essential for grant applications, correspondence, and due diligence processes.

EIN 13-3407819
Website N/A
Address 26 HILL ST Southampton, NY 11968-5317

Key People (6)

Board members, trustees, and key staff who oversee Thomas L Kempner Jr Foundation's grant making decisions and strategic direction. Understanding leadership composition can provide insights into foundation priorities and potential networking opportunities.

President/treasurer Thomas Kempner Jr
Vice Pres/secretary Katheryn C Patterson
Director Trevor Kempner
Director Thomas N Kempner
Director Jessica S Kempner

Forms 990-PF

IRS Form 990-PF filings provide comprehensive financial information, grant details, and operational data. These documents are essential resources for understanding foundation capacity, giving patterns, and strategic priorities.

Form 990-PF Research Tips
  • Review Part XV for detailed grant recipient information and funding purposes
  • Check Part I for total assets, annual giving amounts, and payout requirements
  • Examine Part VIII for key personnel compensation and board structure
  • Look for trends across multiple years to understand giving patterns

About This Foundation Profile

This comprehensive foundation profile for Thomas L Kempner Jr Foundation is powered by Grant Bay's advanced foundation research platform. Our system analyzes IRS Form 990-PF filings, grant histories, and philanthropic patterns to provide nonprofit organizations with actionable intelligence for grant seeking success.

Data Sources & Accuracy

All information is derived from official IRS filings and public records. Grant Bay processes thousands of Form 990-PF documents to extract grant details, financial data, and organizational information. Data accuracy depends on foundation reporting quality and IRS filing completeness.

Research Applications

Use this profile for prospect research, grant strategy development, application preparation, and relationship building. Combine this data with additional research on foundation priorities, application processes, and board member backgrounds for comprehensive grant seeking strategies.

Data Currency: Last updated February 2026 based on IRS Form 990-PF filings. Foundation information reflects most recent available tax year data.