Private foundation · EIN 26-1865519 · Wilmington, Delaware · Philanthropy & grantmaking

Aaron and Patricia Blumberg Foundation

Should you approach them?

Don't send a cold proposal. The foundation reports that it only gives to preselected organizations; an introduction through a current grantee or board member is the realistic route.

From the 2025 Form 990-PF: 27 grants paid, $432K total, median $10K.

Accepts applications
No
per 990-PF Part XV
Grants paid, 2025
27
$432K
Median grant
$10K
Stays in DE
—
of grants
Deadline
—
Assets
$1.2M

Grants paid in 2025

27 grants, all shown · from Form 990-PF Part XV

RecipientPurposeAmount
African Wildlife FoundationWashington, DCGeneral & Unrestricted$50K
Greenpeace Fund IncWashington, DCGeneral & Unrestricted$50K
Sea Shepherd Conservation SocietyAlexandria, VAGeneral & Unrestricted$50K
World Wildlife Fund IncWashington, DCGeneral & Unrestricted$30K
Amnesty International of the USA IncNew York, NYGeneral & Unrestricted$25K
Medecins Sans Frontieres USA IncHagerstown, MDGeneral & Unrestricted$25K
The David Sheldrick Wildlife Trust USALaguna Hills, CAGeneral & Unrestricted$25K
The Dian Fossey Gorilla Fund InternationalAtlanta, GAGeneral & Unrestricted$25K
World Central Kitchen IncorporatedWashington, DCGeneral & Unrestricted$25K
Big Life Foundation USARidgefield, WAGeneral & Unrestricted$15K
Center for Biological Diversity IncTucson, AZGeneral & Unrestricted$10K
Endangered Species InternationalSan Francisco, CAGeneral & Unrestricted$10K
Jane Goodall Institute for Wildlife Research EducaWashington, DCGeneral & Unrestricted$10K
Ocean Conservancy IncWashington, DCGeneral & Unrestricted$10K
Ronald McDonald House Charities of the PhiladelphiPhiladelphia, PAGeneral & Unrestricted$10K
Wildlife Conservation Network IncSan Francisco, CAGeneral & Unrestricted$10K
Friends of Southern Ocean County Animal ShelterManahawkin, NJGeneral & Unrestricted$7,500
Delaware Riverkeeper NetworkBristol, PAGeneral & Unrestricted$5,000
EarthjusticeSan Francisco, CAGeneral & Unrestricted$5,000
International Fund for Animal Welfare IncYarmouth Port, MAGeneral & Unrestricted$5,000
Pa Animal Protective Society & SPCA IncJohnstown, PAGeneral & Unrestricted$5,000
Philadelphia Bar FoundationPhiladelphia, PAGeneral & Unrestricted$5,000
Union of Concerned Scientists IncCambridge, MAGeneral & Unrestricted$5,000
Zoological Society of PhiladelphiaPhiladelphia, PAGeneral & Unrestricted$5,000
Associated Humane Societies IncNewark, NJGeneral & Unrestricted$3,000
Marine Mammal Stranding CenterBrigantine, NJGeneral & Unrestricted$3,000
Overbrook School for the BlindPhiladelphia, PAGeneral & Unrestricted$3,000

By state: District of Columbia 6 · California 4 · Virginia 1 · Pennsylvania 6 · New York 1 · Maryland 1

About this foundation

Aaron and Patricia Blumberg Foundation is a private grantmaking foundation in Wilmington, Delaware, administered in care of Foundation Source, tax-exempt since 2009. Private foundations must pay out roughly 5% of their assets each year, mostly as grants to 501(c)(3) public charities.

All filings on ProPublica

Does Aaron and Patricia Blumberg Foundation accept grant applications?

No. On its 2025 Form 990-PF the foundation checked that it only makes contributions to preselected organizations. Look for an introduction through a current grantee.

How much does Aaron and Patricia Blumberg Foundation give each year?

In tax year 2025 it paid $432K across 27 grants, a median of $10K.

Where does Aaron and Patricia Blumberg Foundation give?

District of Columbia (6 grants), California (4 grants), Virginia (1 grants) and elsewhere, per its latest filing.

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