Private foundation · New York, NY

The Winterburn Foundation

View org profile →Find similar funders →Invitation only
Typical grant size
$10K – $25K – $25K
25th · median · 75th percentile
Unique recipients
9
Repeat grantees
8
funded 2+ years

Application procedures · from 2024 990-PF

Leadership · from 2024 990-PF

Alexandra M Rockefeller
PRESIDENT

Source: IRS Form 990-PF, Part VII. Officers, directors, and trustees as reported by the foundation.

Payout rate · TY 2024
0.0%
grants paid ÷ assets · ~5% IRS minimum
'17
'18
'19
'20
'21
'22
'23
'24
66
Total grants awarded
$2.2M
Total amount
$33K
Average grant
$200K
Largest grant

Giving by year

2022
$450K
8 grants
2021
$340K
9 grants
2020
$325K
8 grants
2019
$290K
10 grants
2018
$245K
8 grants
2017
$275K
9 grants
2016
$100K
4 grants
2014
$85K
5 grants
2013
$85K
5 grants

Top recipients

6 grants · NY · ✓ Exact match
$525K
6 grants · NY · ✓ Exact match
$350K
9 grants · NY · ✓ Exact match
$330K
3 grants · NY · ✓ Exact match
$200K
Cornell University - College of Veterinary Medicine
4 grants · NY
$160K
5 grants · NY · ✓ Exact match
$125K
Phelps Memorial Hospital Center
8 grants · NY
$115K
4 grants · MN · ≈ likely match
$80K
Cornell University-college of Veterinary Medicine
4 grants · PA
$80K
4 grants · NY · ✓ Exact match
$65K

Recipient names are as reported on the 990-PF. ✓ Exact match = EIN matched to IRS records by exact name + state; ≈ likely match = EIN inferred from a closely similar name. The recipient EIN is never stated on the form — it is DoubleNine’s match.

Recent grants · most recent filings first

International Rescue Committee
PROVIDING HEALTHCARE AND CLEAN WATER, PROTECTIVE SERVICES FOR WOMEN AND CHILDREN, EDUCATION, AND ECONOMIC SUPPORT
NY · TY 2022
$200K
Animal Medical Center
ANIMAL RIGHTS, WELFARE, AND SERVICES
NY · TY 2022
$100K
Institute of International Education
EDUCATION PROGRAMS
NY · TY 2022
$75K
Visiting Nurse Service of New York
PROVIDE CRITICALLY NEEDED HOME HEALTHCARE AND COMMUNITY HEALTH PROGRAMS TO NEW YORKERS
NY · TY 2022
$25K
Open Space Institute Inc
CONSERVATION
NY · TY 2022
$25K
Phelps Memorial Hospital Center
HOSPITAL SERVICES
NY · TY 2022
$10K
Young Concert Artists
PERFORMING ARTS
NY · TY 2022
$10K
Black Rock Forest
ADVANCING SCIENTIFIC UNDERSTANDING OF THE NATURAL WORLD BY EXPANDING EDUCATION PROGRAMS AND BUILDING NEW FACILITIES FOR …
NY · TY 2022
$5K
Institute of International Education
INTERNATIONAL PEACE, SECURITY, AND AFFAIRS
NY · TY 2021
$100K
Cornell University - College of Veterinary Medicine
VETERINARY MEDICINE AND EDUCATION
NY · TY 2021
$75K
International Rescue Committee
PROVIDING HEALTHCARE AND CLEAN WATER, PROTECTIVE SERVICES FOR WOMEN AND CHILDREN, EDUCATION, AND ECONOMIC SUPPORT
NY · TY 2021
$65K
Animal Medical Center
ANIMAL RIGHTS, WELFARE, AND SERVICES
NY · TY 2021
$25K
Open Space Institute Inc
CONSERVATION
NY · TY 2021
$25K
Visiting Nurse Service of New York
PROVIDE CRITICALLY NEEDED HOME HEALTHCARE AND COMMUNITY HEALTH PROGRAMS TO NEW YORKERS
NY · TY 2021
$25K
Young Concert Artists
PERFORMING ARTS
NY · TY 2021
$10K
Phelps Memorial Hospital Center
HOSPITAL SERVICES
NY · TY 2021
$10K
Black Rock Forest
ADVANCING SCIENTIFIC UNDERSTANDING OF THE NATURAL WORLD BY EXPANDING EDUCATION PROGRAMS AND BUILDING NEW FACILITIES FOR …
NY · TY 2021
$5K
Metropolitan Museum of Art
TO SUSTAIN ITS POSITION IN THE WORLD.
NY · TY 2020
$150K
International Rescue Committee
PROVIDING HEALTHCARE AND CLEAN WATER, PROTECTIVE SERVICES FOR WOMEN AND CHILDREN, EDUCATION, AND ECONOMIC SUPPORT
NY · TY 2020
$65K
Cornell University - College of Veterinary Medicine
VETERINARY MEDICINE AND EDUCATION
NY · TY 2020
$50K
Animal Medical Center
ANIMAL RIGHTS, WELFARE, AND SERVICES
NY · TY 2020
$25K
Phelps Memorial Hospital Center
HOSPITAL SERVICES
NY · TY 2020
$10K
Visiting Nurse Service of New York
PROVIDE CRITICALLY NEEDED HOME HEALTHCARE AND COMMUNITY HEALTH PROGRAMS TO NEW YORKERS
NY · TY 2020
$10K
Young Concert Artists
PERFORMING ARTS
NY · TY 2020
$10K
Black Rock Forest
ADVANCING SCIENTIFIC UNDERSTANDING OF THE NATURAL WORLD BY EXPANDING EDUCATION PROGRAMS AND BUILDING NEW FACILITIES FOR …
NY · TY 2020
$5K
Institute of International Education
INTERNATIONAL PEACE, SECURITY, AND AFFAIRS
NY · TY 2019
$100K
International Rescue Committee
PROVIDING HEALTHCARE AND CLEAN WATER, PROTECTIVE SERVICES FOR WOMEN AND CHILDREN, EDUCATION, AND ECONOMIC SUPPORT
NY · TY 2019
$65K
Open Space Institute
ENVIRONMENTAL QUALITY, PROTECTION, AND BEAUTIFICATION
NY · TY 2019
$25K
Metropolitan Museum of Art
TO SUSTAIN ITS POSITION IN THE WORLD.
NY · TY 2019
$25K
Animal Medical Center
ANIMAL RIGHTS, WELFARE, AND SERVICES
NY · TY 2019
$25K
Cornell University - College of Veterinary Medicine
VETERINARY MEDICINE AND EDUCATION
NY · TY 2019
$25K
Young Concert Artists
PERFORMING ARTS
NY · TY 2019
$10K
Visiting Nurse Service of New York
PROVIDE CRITICALLY NEEDED HOME HEALTHCARE AND COMMUNITY HEALTH PROGRAMS TO NEW YORKERS
NY · TY 2019
$5K
Black Rock Forest
ADVANCING SCIENTIFIC UNDERSTANDING OF THE NATURAL WORLD BY EXPANDING EDUCATION PROGRAMS AND BUILDING NEW FACILITIES FOR …
NY · TY 2019
$5K
Phelps Memorial Hospital Center
HOSPITAL SERVICES
NY · TY 2019
$5K
International Rescue Committee
DEVELOPMENT AND RELIEF SERVICES
NY · TY 2018
$65K
Animal Medical Center
ANIMAL RIGHTS, WELFARE, AND SERVICES
NY · TY 2018
$50K
Institute of International Education - Scholar Rescue Fund
INTERNATIONAL PEACE, SECURITY, AND AFFAIRS
NY · TY 2018
$50K
Metropolitan Museum of Art
MUSEUMS
NY · TY 2018
$25K
Open Space Institute
ENVIRONMENTAL QUALITY, PROTECTION, AND BEAUTIFICATION
NY · TY 2018
$25K
Young Concert Artists
PERFORMING ARTS
NY · TY 2018
$10K
Cornell University - College of Veterinary Medicine
VETERINARY MEDICINE AND EDUCATION
NY · TY 2018
$10K
Community Service Society of Ny
SOCIAL SERVICES
NY · TY 2018
$10K
International Rescue Committee
GENERAL FUND
NY · TY 2017
$65K
Animal Medical Center
GENERAL FUND
NY · TY 2017
$50K
Institute of International Education
GENERAL FUND
NY · TY 2017
$25K
Mayo Clinic
GENERAL FUND
MN · TY 2017
$25K
Phelps Memorial Hospital Center
GENERAL FUND
NY · TY 2017
$25K
Cornell University-college of Veterinary Medicine
GENERAL FUND
PA · TY 2017
$25K
Wildlife Conservation Society
GENERAL FUND
NY · TY 2017
$25K

Source: IRS Form 990-PF, Part XV. Up to 50 most recent grants shown.