Harry & Beatrice Sley Foundation | Foundation Profile

GrantBay analyzes IRS Form 990-PF data to help grant seekers find fit funders like Harry & Beatrice Sley Foundation. Data shown is extracted from Form 990-PF filings.

EIN: 23-6391020

Foundation Overview

Based in Bethesda, MD, Harry & Beatrice Sley Foundation has awarded 145 grants totaling $376,468 to organizations in Maryland, Virginia and 9 other states across the US. Individual grants range from $100 to $21,500, with a median award of $1,000.

Latest Tax Year
2025
Total Giving (all years)
$376,468
Total Assets
$348,935
Median Grant (all grants)
$1,000

Latest Form 990-PF Snapshot

Total Grants
26
Median Grant
$510
% Median Grant Decline
-36% (vs previous year)
Data extracted from IRS Form 990-PF filings. Last filing year: May 2026

Foundation Intelligence

Advanced analytics and strategic insights to help nonprofit organizations assess grant opportunities and optimize their application strategies

New Applicant Friendliness
Growth-Minded: 65%

17 of 26 recipients (65%) were new grantees. Foundation actively seeks new partnerships to expand impact. Fresh approaches and innovative programs receive serious consideration.

Geographic Focus
District of Columbia

Grants are geographically diversified with 34% in District of Columbia and funding distributed across 11 total locations. This foundation values broad geographic impact and diverse community partnerships. Within District of Columbia, funding concentrates in Washington (76%), Washington Dc (24%).

Funding Trajectory
+70%

Strong 70% growth in annual giving over 9 years indicates expanding philanthropic capacity and increasing opportunities for grant seekers. This upward trajectory suggests growing foundation resources and commitment.

Program Areas
General Purposes

Highly focused on general purposes with 100% of funding dedicated to this sector. This specialization indicates deep expertise and committed investment in the field.

Where is The Money Going?

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Grants & Funding

Analyzing past grantees provides valuable insights into Harry & Beatrice Sley Foundation's funding preferences, organizational priorities, and grant making patterns. This historical data helps potential applicants understand the foundation's strategic focus and identify successful funding approaches.

Name Amount Location Purpose Year
Manassas Ballet Theatre $1,000 Manassas, VA, US General 2025
Save A Child's Heart $360 Rockville, MD, US General 2025
Us Holocaust Memorial Museum $5,500 Washington Dc, DC, US General 2025
Arena Stage $1,200 Washington Dc, DC, US General 2025
Cystic Fibrosis $500 Bethseda, MD, US General 2025
The Ivymount School $100 Rockville, MD, US General 2025
Guide Dogs For The Blind $100 San Rafael, CA, US General 2025
Mclean Projects For The Arts $1,350 Mclean, VA, US General 2025
The Lab School $1,100 Washington Dc, DC, US General 2025
Washington Hebrew Congregation $3,900 Washington Dc, DC, US General 2025
Alzheimers Association $500 Lutherville, MD, US General 2025
First Descents $520 Denver, CO, US General 2025
International Myeloma Foundation $9,250 Studio City, CA, US General 2025
Har Shalom $960 Rancho Mirage, CA, US General 2025
Maccabi Usa $1,800 Philadelphia, PA, US General 2025
Church Of The Redeemer $10,000 Gaithersburg, MD, US General 2025
Defiant Requim Foundation $500 Washington Dc, DC, US General 2025
Giffords Law Center $21,500 Washington Dc, DC, US General 2025
Imagination Stage $1,000 Bethseda, MD, US General 2025
Smithsonian Associates $100 Washington Dc, DC, US General 2025
Weta $100 Arlington, VA, US General 2025
St Jude Childrens Research Hospital $100 Memphis, TN, US General 2025
World Wildlife Fund $100 San Francisco, CA, US General 2025
Bethseda Chevy Chase Rescue Squad $100 Bethseda, MD, US General 2025
Cabin John Volunteer Fire Dept $100 Bethseda, MD, US General 2025
The Phillips Collection $100 Washington Dc, DC, US General 2025
The Kennedy Center $16,763 Washington Dc, DC, US General 2023
Imagination Stage $2,000 Bethesda, MD, US General 2023
Cystic Fibrosis Foundation $500 Bethesda, MD, US General 2023
Washington Hebrew Congregation $4,300 Washington Dc, DC, US General 2023
Mclean Project For The Arts $350 Mclean, VA, US General 2023
Alzheimer's Association $500 Lutherville, MD, US General 2023
The Morgan Pressel Foundation $600 Boca Raton, FL, US General 2023
The Hands Of Love Foundation $325 Marietta, GA, US General 2023
Anti-defamation League $1,800 Washington Dc, DC, US General 2023
Washington International Piano Arts Council $100 Fairfax, VA, US General 2023
Friends Of Israel Defense Forces $8,000 Brooklyn, NY, US General 2023
United States Holocaust Memorial Museum $5,000 Washington Dc, DC, US General 2023
Manassas Ballet Theatre $500 Manassas, VA, US General 2023
Maccabi Usa $1,000 Philadelphia, PA, US General 2023
Cystic Fibrosis Foundation $500 Bethesda, MD, US General 2022
Alzheimer's Association $500 Lutherville, MD, US General 2022
Manassas Ballet Theatre $1,000 Manassas, VA, US General 2022
Washington Hebrew Congregation $2,750 Washington, DC, US General 2022
First Descents $500 Denver, CO, US General 2022
Hospice Of The Chesapeake $500 Pasadena, MD, US General 2022
The Kennedy Center $18,350 Washington, DC, US General 2022
Jewish Women's International $1,000 Washington, DC, US General 2022
Duke University $6,000 Durham, NC, US General 2022
Pioneersorg $2,000 Orlando, FL, US General 2022
The Leukemia & Lymphona Society $2,000 Washington, DC, US General 2022
Cystic Fibrosis Foundation $500 Bethesda, MD, US General 2022
Alzheimer's Association $500 Lutherville, MD, US General 2022
Manassas Ballet Theatre $1,000 Manassas, VA, US General 2022
Washington Hebrew Congregation $2,750 Washington, DC, US General 2022
First Descents $500 Denver, CO, US General 2022
Hospice Of The Chesapeake $500 Pasadena, MD, US General 2022
The Kennedy Center $18,350 Washington, DC, US General 2022
Jewish Women's International $1,000 Washington, DC, US General 2022
Duke University $6,000 Durham, NC, US General 2022
Pioneersorg $2,000 Orlando, FL, US General 2022
The Leukemia & Lymphona Society $2,000 Washington, DC, US General 2022
Cystic Fibrosis Foundation $500 Bethesda, MD, US General 2022
Alzheimer's Association $500 Lutherville, MD, US General 2022
Manassas Ballet Theatre $1,000 Manassas, VA, US General 2022
Washington Hebrew Congregation $2,750 Washington, DC, US General 2022
First Descents $500 Denver, CO, US General 2022
Hospice Of The Chesapeake $500 Pasadena, MD, US General 2022
The Kennedy Center $18,350 Washington, DC, US General 2022
Jewish Women's International $1,000 Washington, DC, US General 2022
Duke University $6,000 Durham, NC, US General 2022
Pioneersorg $2,000 Orlando, FL, US General 2022
The Leukemia & Lymphona Society $2,000 Washington, DC, US General 2022
Rockville Jcc $500 Rockville, MD, US General 2021
Cystic Fibrosis Foundationa $500 Bethesda, MD, US General 2021
The Kennedy Center $16,500 Washington, DC, US General 2021
Alzheimer's Association $250 Lutherville, MD, US General 2021
Washington Hebrew Congregation $2,400 Washington, DC, US General 2021
First Descents $500 Denver, CO, US General 2021
Duke University $6,000 Durham, NC, US General 2021
Pioneers Org $2,000 Orlando, FL, US General 2021
The Leukemia & Lymphona Society $2,000 Washington, DC, US General 2021
Manassas Ballet Theatre $500 Manassas, VA, US General 2021
Imagination Stage $1,000 Bethesda, MD, US General 2021
Maccabi Usa $1,000 Philadelphia, PA, US General 2021
The Kennedy Center $16,700 Washington, DC, US General 2020
St Jude's Children's Hospital $500 Arlington, VA, US General 2020
Cystic Fibrosis Foundation $500 Bethesda, MD, US General 2020
Washington Hebrew Congregation $2,800 Washington, DC, US General 2020
First Descents $500 Denver, CO, US General 2020
Duke University $6,000 Durham, NC, US General 2020
Pioneersorg $2,000 Orlando, FL, US General 2020
Leukemia And Lymphoma Society $2,000 Washington, DC, US General 2020
Imagination Stage $1,000 Bethesda, MD, US General 2020
Manassas Performing Arts Inc $1,000 Manassas, VA, US General 2020
Cabin John Park Volunteer Fire Dept $500 Bethesda, MD, US General 2020
The Defiant Requiem Foundation $200 Washington, DC, US General 2020
National Jewish Health $200 New York, NY, US General 2020
Maccabi Usa $500 Phildelphia, PA, US General 2020
Us Holocaust Memorial Muesum $500 Washington, DC, US General 2020
Guide Dogs For The Blind $100 San Rafael, CA, US General 2020
Chesapeake Bay Foundation $100 Annapolis, MD, US General 2020
World Wildlife Fund $100 Washington, DC, US General 2020
Mclean School $250 Potomac, MD, US General 2020
The Washington Ballet $650 Washington, DC, US General 2018
American Heart Association $150 Glen Allen, VA, US General 2018
Alzheimers Drug Discovery Foundation $500 New York, NY, US General 2018
Us Holocaust Memorial Muesum $500 Washington, DC, US General 2018
Cystic Fibrosis Foundation $500 Bethesda, MD, US General 2018
Main Street Connect $600 Rockville, MD, US General 2018
The Kennedy Center $14,000 Washington, DC, US General 2018
Washington Hebrew Congregation $2,300 Washington, DC, US General 2018
First Descents $1,000 Denver, CO, US General 2018
Sibley Memorial Hospital Foundation $1,500 Washington, DC, US General 2018
Imagination Stage $1,000 Bethesda, MD, US General 2018
Duke University $6,000 Durham, NC, US General 2018
Pioneers $2,000 Orlando, FL, US General 2018
The Lukemia & Lymphoma Society $2,000 Washington, DC, US General 2018
John F Kennedy Center For Performing Arts $14,000 Washington, DC, US General 2017
The Washington Ballet $250 Washington, DC, US General 2017
Cystic Fibrosis Foundation $500 Bethesda, MD, US General 2017
Us Holocaust Memorial Museum $300 Washington, DC, US General 2017
International Myeloma Foundation $300 North Hollywood, CA, US General 2017
National Jewish Health $250 Denver, CO, US General 2017
Washington Hebrew Congregation $2,500 Washington, DC, US General 2017
First Descents Cancer Organization $250 Denver, CO, US General 2017
Imagination Stage $1,000 Bethesda, MD, US General 2017
Interfaith Conference $500 Washington, DC, US General 2017
Duke University $6,000 Durham, NC, US General 2017
Pioneers Org $2,000 Orlando, FL, US General 2017
Leukemia And Lymphoma Society $2,000 Alexandria, VA, US General 2017
John F Kennedy Center For Performing Arts $17,740 Washington, DC, US General 2016
International Myeloma Foundation $300 North Hollywood, CA, US General 2016
Cystic Fibrosis Foundation $500 Bethesda, MD, US General 2016
Us Holocaust Memorial Museum $500 Washington, DC, US General 2016
The Washington Ballet $250 Washington, DC, US General 2016
Washington Hebrew Congregation $2,200 Washington, DC, US General 2016
First Descents Cancer Organization $250 Denver, CO, US General 2016
Colon Cancer Alliance $100 Washington, DC, US General 2016
Imagination Stage $500 Bethesda, MD, US General 2016
Duke University $6,000 Durham, NC, US General 2016
Pioneers $2,000 Orlando, FL, US General 2016
Leukemia And Lymphoma Society $2,000 Alexandria, VA, US General 2016
Maccabi Usa $3,850 Phialdelphia, PA, US General 2016
Boys And Girls Club Of Greater Washington $250 Washington, DC, US General 2016

Foundations Similar to Harry & Beatrice Sley Foundation

Discover 5 foundations with comparable assets ($341,825-$362,129), similar grant patterns, and geographic focus in MD that may also align with your organization's funding needs and grant seeking strategy.

Foundation Name Total Assets Typical Grant Size Service Area Similarity Match

EIN: 59-6808046 | 284 grants awarded
$348,340
(≈ Similar)
$500
median grant
Annapolis, MD
Same state
100%
Excellent match

EIN: 31-1550094 | 47 grants awarded
$346,835
(≈ Similar)
$1,000
median grant
Bethesda, MD
Same state
100%
Excellent match

EIN: 23-7213934 | 65 grants awarded
$352,657
(≈ Similar)
$1,000
median grant
Catonsville, MD
Same state
99%
Excellent match

EIN: 52-1102104 | 114 grants awarded
$341,825
(≈ Similar)
$1,000
median grant
Frederick, MD
Same state
99%
Excellent match

EIN: 33-0674468 | 20 grants awarded
$362,129
(≈ Similar)
$1,000
median grant
Potomac, MD
Same state
98%
Excellent match

Contact Information

Official contact details for Harry & Beatrice Sley Foundation as registered with the IRS. These details are essential for grant applications, correspondence, and due diligence processes.

EIN 23-6391020
Website N/A
Address 9644 BEMAN WOODS WAY Potomac, MD 20854-5470

Key People (2)

Board members, trustees, and key staff who oversee Harry & Beatrice Sley Foundation's grant making decisions and strategic direction. Understanding leadership composition can provide insights into foundation priorities and potential networking opportunities.

Executive Dir. Betsy Sley Grossman
Executive Dir. Benjamin H Sley

Forms 990-PF

IRS Form 990-PF filings provide comprehensive financial information, grant details, and operational data. These documents are essential resources for understanding foundation capacity, giving patterns, and strategic priorities.

Form 990-PF Research Tips
  • Review Part XV for detailed grant recipient information and funding purposes
  • Check Part I for total assets, annual giving amounts, and payout requirements
  • Examine Part VIII for key personnel compensation and board structure
  • Look for trends across multiple years to understand giving patterns

About This Foundation Profile

This comprehensive foundation profile for Harry & Beatrice Sley Foundation is powered by Grant Bay's advanced foundation research platform. Our system analyzes IRS Form 990-PF filings, grant histories, and philanthropic patterns to provide nonprofit organizations with actionable intelligence for grant seeking success.

Data Sources & Accuracy

All information is derived from official IRS filings and public records. Grant Bay processes thousands of Form 990-PF documents to extract grant details, financial data, and organizational information. Data accuracy depends on foundation reporting quality and IRS filing completeness.

Research Applications

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Data Currency: Last updated May 2026 based on IRS Form 990-PF filings. Foundation information reflects most recent available tax year data.