Harry and Beatrice Sley Foundation

Invitation Only

Bethesda, Maryland · EIN 23-6391020 · Private foundation

Grants paid (2025)$62K

Organizations funded14

Typical grant$500

Total assets$349K

Half of its grants to organizations were between $100 and $5,500.

From the return

How to apply

On its return for tax year 2025 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.

What it funds

Share of grant lines on the latest return, classified from the purpose each grant states.

Education1
Health1

Where it gives

64% of grants went outside Maryland.

Grants paid in tax year 2025

Recipient	Location	Purpose	Amount
Giffords Law Center	Washington DC, DC	General	$21,500
Church of the Redeemer	Gaithersburg, MD	General	$10,000
International Myeloma Foundation	Studio City, CA	General	$9,250
US Holocaust Memorial Museum	Washington DC, DC	General	$5,500
Washington Hebrew Congregation	Washington DC, DC	General	$3,900
The Lab School	Washington DC, DC	General	$1,100
Manassas Ballet Theatre	Manassas, VA	General	$1,000
Alzheimers Association	Lutherville, MD	General	$500
Defiant Requim Foundation	Washington DC, DC	General	$500
The Ivymount School	Rockville, MD	General	$100
St Jude Childrens Research Hospital	Memphis, TN	General	$100
World Wildlife Fund	San Francisco, CA	General	$100
Bethseda Chevy Chase Rescue Squad	Bethseda, MD	General	$100
Cabin John Volunteer Fire Dept	Bethseda, MD	General	$100

The return also lists 12 grants to individuals ($8,090). We do not publish the names of individual recipients.

Giving by year

Tax year	Grants paid	Grant lines
2025	$61,840	26
2024	$44,205	14
2023	$41,738	14

Sources

IRS Form 990-PF, tax year 2025, filed Apr 15, 2026 - IRS e-file batch, object ID 202631049349101308
IRS Tax Exempt Organization Search for EIN 23-6391020
Profile updated Nov 6, 2026

Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.