Private Foundation

Sidley Family Foundation

Sidley Family Foundation, of Wilmington, DE, is a Private Foundation tracked in Imperigo's IRS 990 database. The 2025 filing shows $40K in revenue, $283K in expenses, $3.1M in total assets. IRS filings disclose 30 grants awarded by this foundation, totaling roughly $560K.

EIN: 870928050 Wilmington, DE Latest filing: 2025

Total Revenue$40K

Total Expenses$283K

Total Assets$3.1M

Grants Given30

Grant Total$560K

Filing Years2021–2025

Sample Grants Given

IMMIGRANT LEGAL RESOURCE CENTER

SAN FRANCISCO, CA · 2025

General & Unrestricted

$25,000

MAZON INC A JEWISH RESPONSE TO HUNGER

ALBERT LEA, MN · 2025

General & Unrestricted

$25,000

ALZHEIMER'S DISEASE AND RELATED DISORDERS ASSOCIAT

WASHINGTON, DC · 2025

General & Unrestricted

$25,000

CENTER FOR AMERICAN PROGRESS

WASHINGTON, DC · 2025

General & Unrestricted

$25,000

PLANNED PARENTHOOD LOS ANGELES

LOS ANGELES, CA · 2025

General & Unrestricted

$25,000

Showing up to 5 of 30 total records — full history available with membership.

Officers & Directors

Dir Ally Sidley

Dir Jane Sidley

Dir, Pres, Sec, Treas Michael Sidley

Dir Wendy Sidley

Officer compensation and complete director data available with membership.

Top Grant Purposes

General & Unrestricted

$529,500 27 grants

Eaton Fire Relief and Reovery Fund

$10,000 1 grant

Los Angeles Fire Relief Efforts

$10,000 1 grant

To fund the naturalist program

$10,000 1 grant

Financial Trends

Year	Revenue	Expenses	Assets
2025	$40K	$283K	$3.1M
2024	$2K	$223K	$3.3M
2023	$-44K	$198K	$3.6M
2022	$-108K	$92K	$3.8M
2021	$4.0M	$12K	$4.0M

Between 2021 and 2025, reported annual revenue declined from $4.0M to $40K (-99%), 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 CA, CO, DC, KY, MN, NY.

CACODCKYMNNY

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

See the full picture for Sidley Family Foundation

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