Private Foundation

THE WINTERBURN FOUNDATION

THE WINTERBURN FOUNDATION, of NEW YORK, NY, is a Private Foundation tracked in Imperigo's IRS 990 database. The 2025 filing shows $330K in revenue, $527K in expenses, $3.1M in total assets. IRS filings disclose 53 grants awarded by this foundation, totaling roughly $2.4M.

EIN: 136943521 NEW YORK, NY Latest filing: 2025

Total Revenue$330K

Total Expenses$527K

Total Assets$3.1M

Grants Given53

Grant Total$2.4M

Filing Years2021–2025

Sample Grants Given

INTERNATIONAL RESCUE COMMITTEE

NEW YORK, NY · 2025

PROVIDING HEALTHCARE AND CLEAN WATER, PROTECTIVE SERVICES FOR WOMEN AND CHILDREN, EDUCATION, AND ECONOMIC SUPPORT

$500,000

INTERNATIONAL RESCUE COMMITTEE

NEW YORK, NY · 2022

PROVIDING HEALTHCARE AND CLEAN WATER, PROTECTIVE SERVICES FOR WOMEN AND CHILDREN, EDUCATION, AND ECONOMIC SUPPORT

$200,000

ANIMAL MEDICAL CENTER

NEW YORK, NY · 2022

ANIMAL RIGHTS, WELFARE, AND SERVICES

$100,000

INSTITUTE OF INTERNATIONAL EDUCATION

NEW YORK, NY · 2022

EDUCATION PROGRAMS

$75,000

OPEN SPACE INSTITUTE INC

NEW YORK, NY · 2022

CONSERVATION

$25,000

Showing up to 5 of 53 total records — full history available with membership.

Officers & Directors

PRESIDENT Alexandra M Rockefeller

Officer compensation and complete director data available with membership.

Top Grant Purposes

PROVIDING HEALTHCARE AND CLEAN WATER, PROTECTIVE SERVICES FOR WOMEN AND CHILDREN, EDUCATION, AND ECONOMIC SUPPORT

$895,000 5 grants

GENERAL FUND

$275,000 9 grants

INTERNATIONAL PEACE, SECURITY, AND AFFAIRS

$250,000 3 grants

ANIMAL RIGHTS, WELFARE, AND SERVICES

$225,000 5 grants

TO SUSTAIN ITS POSITION IN THE WORLD.

$175,000 2 grants

Financial Trends

Year	Revenue	Expenses	Assets
2025	$330K	$527K	$3.1M
2024	$95K	$26K	$3.3M
2023	$54K	$25K	$3.2M
2022	$-4K	$482K	$3.3M
2021	$160K	$375K	$3.7M

Between 2021 and 2025, reported annual revenue grew from $160K to $330K (+106%), with total assets most recently reported at $3.1M.

Interactive year-over-year charts and full filing details available with membership.

Grant Geography

Grants from this foundation were reported to recipients in MN, NY, PA.

MNNYPA

Full geographic grant map with state-by-state breakdown available with membership.

See the full picture for THE WINTERBURN FOUNDATION

Complete financials, all 53 grant records, officer compensation, year-over-year trend charts, a geographic grant map, and data exports — across 498,000+ organizations.

Full Financial History Complete Grant Activity Officer Compensation Year-over-Year Charts Geographic Grant Map Data Exports