The Leon & Helen Weiner Foundation | Foundation Profile

GrantBay analyzes IRS Form 990-PF data to help grant seekers find fit funders like The Leon & Helen Weiner Foundation. Data shown is extracted from Form 990-PF filings.

EIN: 25-6666594

Foundation Overview

Based in Wilmington, DE, The Leon & Helen Weiner Foundation has awarded 174 grants totaling $1,665,500 to organizations in Delaware, Pennsylvania and 11 other states across the US. Individual grants range from $1,000 to $38,000, with a median award of $9,500.

Latest Tax Year
2024
Total Giving (all years)
$1,665,500
Total Assets
$2,554,555
Median Grant (all grants)
$9,500

Latest Form 990-PF Snapshot

Total Grants
9
Median Grant
$10,000
% No Significant Change
0% (vs previous year)
Data extracted from IRS Form 990-PF filings. Last filing year: March 2026

Foundation Intelligence

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

New Applicant Friendliness
Closed Network: N/A

0 of 9 recipients (0%) were new grantees. Foundation maintains tight relationships with established partners. New applicants rarely succeed without insider connections.

Geographic Focus
Delaware

Grants are geographically diversified with 39% in Delaware and funding distributed across 13 total locations. This foundation values broad geographic impact and diverse community partnerships. Within Delaware, funding concentrates in Wilmington (82%), Newark (10%), New Castle (4%).

Funding Trajectory
+68%

Strong 68% 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
Education + General Purposes

Dual focus on education (50%) and general purposes, indicating strategic concentration in complementary program areas.

Where is The Money Going?

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Grants & Funding

Analyzing past grantees provides valuable insights into The Leon & Helen Weiner 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
Ai Dupont Hospital $38,000 Wilmington, DE, US General 2024
Arc Of Chester County $15,000 West Chester, PA, US General 2024
Curears $10,000 Raritan, NJ, US General 2024
Nightstalker Association $10,000 Oak Grove, KY, US General 2024
Occidental College $11,000 Los Angeles, CA, US General 2024
Rodney Street Tennis And Tutoring $5,000 Wilmington, DE, US General 2024
Special Operations Warrior Foundation $21,000 Tampa, FL, US General 2024
Tri-state Bird Rescue & Research $3,000 Newark, DE, US General 2024
Vigilant Torch Association $10,000 Alexandria, VA, US General 2024
Ai Dupont Hospital $35,000 Wilmington, DE, US General 2023
Arc Of Chester County $15,000 West Chester, PA, US General 2023
Curears $10,000 Raritan, NJ, US General 2023
Nightstalker Association $10,000 Oak Grove, KY, US General 2023
Occidental College $7,000 Los Angeles, CA, US General 2023
Rodney Street Tennis And Tutoring $5,000 Wilmington, DE, US General 2023
Special Operations Warrior Foundation $10,000 Tampa, FL, US General 2023
Vigilant Torch Association $10,000 Alexandria, VA, US General 2023
Moffitt Cancer Center $7,000 Tampa, FL, US General 2023
Jobs For Delaware Grads $2,000 Dover, DE, US General 2023
Ai Dupont Hospital $35,000 Wilmington, DE, US General 2023
Arc Of Chester County $15,000 West Chester, PA, US General 2023
Curears $10,000 Raritan, NJ, US General 2023
Nightstalker Association $10,000 Oak Grove, KY, US General 2023
Occidental College $7,000 Los Angeles, CA, US General 2023
Rodney Street Tennis And Tutoring $5,000 Wilmington, DE, US General 2023
Special Operations Warrior Foundation $10,000 Tampa, FL, US General 2023
Vigilant Torch Association $10,000 Alexandria, VA, US General 2023
Moffitt Cancer Center $7,000 Tampa, FL, US General 2023
Jobs For Delaware Grads $2,000 Dover, DE, US General 2023
Alfred I Dupont Hospital $38,000 Wilmington, DE, US General 2022
Arc Of Chester County $10,000 West Chester, PA, US General 2022
Curears $10,000 Raritan, NJ, US General 2022
Delaware Museum Of Nature & Science $6,000 Wilmington, DE, US General 2022
Nightstalker Association $10,000 Oak Grove, KY, US General 2022
Occidental College $7,000 Los Angeles, CA, US General 2022
Rodney Street Tennis And Tutoring $10,000 Wilmington, DE, US General 2022
Special Operations Warrior Foundation $10,000 Tampa, FL, US General 2022
Vigilant Torch Association $10,000 Alexandria, VA, US General 2022
Maui United Way $10,000 Wailuku, HI, US General 2022
Alfred I Dupont Hospital $38,000 Wilmington, DE, US General 2022
Arc Of Chester County $10,000 West Chester, PA, US General 2022
Curears $10,000 Raritan, NJ, US General 2022
Delaware Museum Of Nature & Science $6,000 Wilmington, DE, US General 2022
Nightstalker Association $10,000 Oak Grove, KY, US General 2022
Occidental College $7,000 Los Angeles, CA, US General 2022
Rodney Street Tennis And Tutoring $10,000 Wilmington, DE, US General 2022
Special Operations Warrior Foundation $10,000 Tampa, FL, US General 2022
Vigilant Torch Association $10,000 Alexandria, VA, US General 2022
Maui United Way $10,000 Wailuku, HI, US General 2022
Alfred I Dupont Hospital $38,000 Wilmington, DE, US General 2022
Arc Of Chester County $10,000 West Chester, PA, US General 2022
Curears $10,000 Raritan, NJ, US General 2022
Delaware Museum Of Nature & Science $6,000 Wilmington, DE, US General 2022
Nightstalker Association $10,000 Oak Grove, KY, US General 2022
Occidental College $7,000 Los Angeles, CA, US General 2022
Rodney Street Tennis And Tutoring $10,000 Wilmington, DE, US General 2022
Special Operations Warrior Foundation $10,000 Tampa, FL, US General 2022
Vigilant Torch Association $10,000 Alexandria, VA, US General 2022
Maui United Way $10,000 Wailuku, HI, US General 2022
Alfred I Dupont Hospital $38,000 Wilmington, DE, US General 2022
Arc Of Chester County $10,000 West Chester, PA, US General 2022
Curears $10,000 Raritan, NJ, US General 2022
Delaware Museum Of Nature & Science $6,000 Wilmington, DE, US General 2022
Nightstalker Association $10,000 Oak Grove, KY, US General 2022
Occidental College $7,000 Los Angeles, CA, US General 2022
Rodney Street Tennis And Tutoring $10,000 Wilmington, DE, US General 2022
Special Operations Warrior Foundation $10,000 Tampa, FL, US General 2022
Vigilant Torch Association $10,000 Alexandria, VA, US General 2022
Maui United Way $10,000 Wailuku, HI, US General 2022
Alfred I Dupont Hospital $37,000 Wilmington, DE, US General 2021
Arc Of Chester County $10,000 West Chester, PA, US General 2021
Curears $10,000 Raritan, NJ, US General 2021
Leon N Weiner Education Foundation $3,000 Wilmington, DE, US Education Purposes 2021
Leukemia & Lymphoma Society $5,000 Wilmington, DE, US General 2021
Nightstalker Association $10,000 Oak Grove, KY, US General 2021
Occidental College $5,000 Los Angeles, CA, US General 2021
Special Operations Warrior Foundation $10,000 Tampa, FL, US General 2021
Team Rubicon $10,000 Los Angeles, CA, US General 2021
Vigilant Torch Association $10,000 Alexandria, VA, US General 2021
World Central Kitchen $2,000 Washington, DC, US General 2021
Rodney Street Tennis And Tutoring $7,000 Wilmington, DE, US General 2021
Kennett Library $10,000 Kennett Square, PA, US General 2021
Alfred I Dupont Hospital $37,000 Wilmington, DE, US General 2021
Arc Of Chester County $10,000 West Chester, PA, US General 2021
Curears $10,000 Raritan, NJ, US General 2021
Leon N Weiner Education Foundation $3,000 Wilmington, DE, US Education Purposes 2021
Leukemia & Lymphoma Society $5,000 Wilmington, DE, US General 2021
Nightstalker Association $10,000 Oak Grove, KY, US General 2021
Occidental College $5,000 Los Angeles, CA, US General 2021
Special Operations Warrior Foundation $10,000 Tampa, FL, US General 2021
Team Rubicon $10,000 Los Angeles, CA, US General 2021
Vigilant Torch Association $10,000 Alexandria, VA, US General 2021
World Central Kitchen $2,000 Washington, DC, US General 2021
Rodney Street Tennis And Tutoring $7,000 Wilmington, DE, US General 2021
Kennett Library $10,000 Kennett Square, PA, US General 2021
Alfred I Dupont Hospital $15,000 Wilmington, DE, US General 2020
Arc Of Chester County $4,000 West Chester, PA, US General 2020
Kennett Area Ymca $4,000 Kennett Square, PA, US General 2020
Leon N Weiner Education Foundation $6,000 Wilmington, DE, US Education Purposes 2020
Leukemia & Lymphoma Society $10,000 Wilmington, DE, US General 2020
Nemours Childrens Health System $15,000 Wilmington, DE, US General 2020
Nightstalker Association $12,000 Oak Grove, KY, US General 2020
Special Operations Warrior Foundation $6,000 Tampa, FL, US General 2020
Team Rubicon $6,000 Los Angeles, CA, US General 2020
Occidental College $6,000 Los Angeles, CA, US General 2020
Salesianum School $5,000 Wilmington, DE, US General 2020
No One Left Behind $5,000 Merrifield, VA, US General 2020
World Central Kitchen $4,000 Washington, DC, US General 2020
Curears $10,000 Raritan, NJ, US General 2020
Alfred I Dupont Hospital $15,000 Wilmington, DE, US General 2019
American Heart Association $5,000 Newark, DE, US General 2019
Arc Of Chester County $10,000 West Chester, PA, US General 2019
Delaware Museum Of Natural History $5,000 Wilmington, DE, US General 2019
Kennett Area Ymca $5,000 Kennett Square, PA, US General 2019
La Comunidad Hispana $5,000 Kennett Square, PA, US General 2019
Leon N Weiner Education Foundation $5,000 Wilmington, DE, US Education Purposes 2019
Nemours Childrens Health System $15,000 Wilmington, DE, US General 2019
Nightstalker Association $5,000 Oak Grove, KY, US General 2019
Team Rubicon $10,000 Los Angeles, CA, US General 2019
Special Operations Warrior Foundation $5,000 Tampa, FL, US General 2019
Centers For Disease Control Foundation $10,000 Atlanta, GA, US General 2019
Leukemia & Lymphoma Society $5,000 Wilmington, DE, US General 2019
Autism Society $5,000 Newark, DE, US General 2019
Alfred I Dupont Hospital $30,000 Wilmington, DE, US General 2018
American Cancer Society $5,000 New Castle, DE, US General 2018
American Heart Association $5,000 Newark, DE, US General 2018
La Comunidad Hispana $5,000 Kennett Square, PA, US General 2018
Leon N Weiner Education Foundation $6,000 Wilmington, DE, US Education Purposes 2018
Nightstalker Association $10,000 Oak Grove, KY, US General 2018
Team Rubicon $10,000 Los Angeles, CA, US General 2018
Vigilant Torch Association $5,000 Alexandria, VA, US General 2018
Arc Of Chester County $10,000 West Chester, PA, US General 2018
Charter School Of Wilmington $5,000 Wilmington, DE, US General 2018
Tri-state Bird Rescue & Research $5,000 Newark, DE, US General 2018
Delaware Museum Of Natural History $10,000 Wilmington, DE, US General 2018
American Camp Association $5,000 Glenside, PA, US General 2018
Aclu Of Delaware $5,000 Wilmington, DE, US General 2017
American Cancer Society $6,000 New Castle, DE, US General 2017
American Heart Association $6,000 Newark, DE, US General 2017
Kennett Area Ymca $3,000 Kennett Square, PA, US General 2017
Leon N Weiner Education Foundation $6,000 Wilmington, DE, US Education Purposes 2017
Nemours Fund For Children's Health $24,000 Wilmington, DE, US General 2017
Nightstalker Association $6,000 Oak Grove, KY, US General 2017
Team Rubicon $7,500 Los Angeles, CA, US General 2017
Tvrc Education Foundation $5,000 Jackson, WY, US General 2017
Vigilant Torch Association $6,000 Alexandria, VA, US General 2017
Kennett Flash $6,000 Kennett Square, PA, US General 2017
Cab Calloway School Of The Arts $5,000 Wilmington, DE, US General 2017
La Comunidad Hispana $10,000 Kennett Square, PA, US General 2017
Tower Hill School $5,000 Wilmington, DE, US General 2017
Aclu Of Delaware $5,000 Wilmington, DE, US General 2016
Kennett Area Ymca $10,000 Kennett Square, PA, US General 2016
Leon N Weiner Education Foundation $6,000 Wilmington, DE, US Education Purposes 2016
Music School Of Delaware $1,000 Wilmington, DE, US General 2016
Team Rubicon $7,000 Los Angeles, CA, US General 2016
Hurrican Harvey Relief Fund $6,000 Houston, TX, US General 2016
American Cancer Society $6,000 New Castle, DE, US General 2016
Alfred I Dupont Hospital $19,000 Wilmington, DE, US General 2016
Delaware Combined Campaign $5,000 Wilmington, DE, US General 2016
Family Promise $5,000 Wilmington, DE, US General 2016
American Heart Association $6,000 Newark, DE, US General 2016
Tvrc Education Foundation $5,000 Jackson, WY, US General 2016
Leon N Weiner Education Foundation $5,000 Wilmington, DE, US Education Purposes 2015
Whyy Inc $7,000 Philadelphia, PA, US General 2015
Uva Scholarship Fund $10,000 Charlottesville, VA, US Education Purposes 2015
Team Rubicon $2,000 Los Angeles, CA, US General 2015
Vigilant Torch Association $5,000 Alexandria, VA, US General 2015
Nightstalker Association $5,000 Oak Grove, KY, US General 2015
Families Of Fallen Nightstalkers $5,000 Clarksville, TN, US General 2015
Kennett Area Ymca $8,000 Kennett Square, PA, US General 2015
Music School Of Delaware $1,000 Wilmington, DE, US General 2015
Nemours Fund For Children's Health $8,000 Wilmington, DE, US General 2015
Nemours Childrens Health System $9,000 Wilmington, DE, US General 2015
Aclu Of Delaware $8,000 Wilmington, DE, US General 2015

Foundations Similar to The Leon & Helen Weiner Foundation

Discover 5 foundations with comparable assets ($2,520,777-$2,589,933), similar grant patterns, and geographic focus in DE 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: 32-0551158 | 18 grants awarded
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$17,147
median grant
Wilmington, DE
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EIN: 21-1826720 | 88 grants awarded
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$11,750
median grant
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EIN: 86-6242447 | 125 grants awarded
$2,526,251
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$10,000
median grant
Wilmington, DE
Same state
99%
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EIN: 27-5023620 | 73 grants awarded
$2,520,777
(≈ Similar)
$10,000
median grant
Wilmington, DE
Same state
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EIN: 20-3797595 | 173 grants awarded
$2,589,933
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$10,000
median grant
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Contact Information

Official contact details for The Leon & Helen Weiner Foundation as registered with the IRS. These details are essential for grant applications, correspondence, and due diligence processes.

EIN 25-6666594
Website N/A
Address 1301 WALNUT GREEN RD Wilmington, DE 19807-1649

Key People (4)

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

Trustee Jan Noel Hey
Trustee Jason Bartholomew Deleeuw
Trustee Hillary Lindsay Spruance
Trustee Peter Bradford Deleeuw

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 The Leon & Helen Weiner 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

Use this profile for prospect research, grant strategy development, application preparation, and relationship building. Combine this data with additional research on foundation priorities, application processes, and board member backgrounds for comprehensive grant seeking strategies.

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