The David Mduffy Jr Foundation

Foundation · Grantmaker Garden City, NY EIN: 87-6588743

The David Mduffy Jr Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Garden City, NY. IRS filing data is available from 2021 through 2024. As of 2024, the organization holds $98K in total assets. In 2024, it awarded 7 grants totaling $34K. Net investment income was $2K.

Key facts about The David Mduffy Jr Foundation

In short: The David Mduffy Jr Foundation gave $34K across 7 grants in 2024 (avg $5K), mostly in New York. Source: 2024 IRS Form 990-PF.

EIN
87-6588743
Latest 990 filing
Form 990-PF, 2024
Annual giving (2024)
$34,000
Grants made (2024)
7
Average grant
$4,857
Median grant
$5,000
Total assets
$98,322
Primary geography
New York (100% of itemized 2024 grant dollars)

Data from IRS Form 990-PF, 2024; updated September 2026.

Financial Overview

From 2024 IRS Form 990-PF · View filing

Total Assets

$98K

-20.7% YoY

Annual Giving

$34K

+42.9% YoY

Grant Count

7

+40.0% YoY

Avg Grant Size

$5K

+2.0% YoY

Under IRS private-foundation payout rules, The David Mduffy Jr Foundation reported a distributable amount of $6K for 2024 — the minimum it must pay out in qualifying distributions.

How The David Mduffy Jr Foundation gives

  • In 2024 it paid out 663% of its IRS minimum distribution (the 5% rule). Method

From the foundation's IRS Form 990-PF filings. Methodology.

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

1state

Share of all 7 itemized 2024 grant dollars.

States

Cities

BellportBrookhavenNew OrkHempsteadNew YorkHampstead

Giving Over Time

Total grant dollars and number of grants per year

$0$10K$20K$30K$40K0 grants20214 grants20225 grants20237 grants2024

Grant Insights

How this funder distributes its grants

Top Recipients

Top 7 recipients in 2024

Harlem Lacrosse: $10KHarlem Lacrosse$10KBoys Girls Club of the Bellport Are: $5KBoys Girls Club of theBellport Are$5KThe Dream Charter School: $5KThe Dream Charter School$5KFriends of the Bellport Bay: $5KFriends of the Bellport Bay$5KCeed: $5KCeed$5KBellport High School: $3KBellport High School$3KInterfaith Nutrition Network: $1KInterfaith Nutrition Network$1K

Grant Size Distribution

16 grants across all recorded years

16<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
HARLEM LACROSSE New Ork, NYGENERAL PURPOSE FUND$10,000
BOYS GIRLS CLUB OF THE BELLPORT ARE Bellport, NYGENERAL PURPOSE FUND$5,000
THE DREAM CHARTER SCHOOL New York, NYGENERAL PURPOSE FUND$5,000
FRIENDS OF THE BELLPORT BAY Bellport, NYGENERAL PURPOSE FUND$5,000
CEED Brookhaven, NYGENERAL PURPOSE FUND$5,000
BELLPORT HIGH SCHOOL Brookhaven, NYGENERAL PURPOSE FUND$3,000
INTERFAITH NUTRITION NETWORK Hempstead, NYGENERAL PURPOSE FUND$1,000

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$50K$100K$150K$200K2021202220232024
Metric202420232022
Total Assets$98,322$124,033$132,543
Revenue$17,094$17,862$33,623
Expenses$42,805$26,372$44,263
Qualifying Distributions$42,374$25,161$44,070
Net Investment Income$2,456——
Distributable Amount$6,394$6,221$6,839

Data update history

When this profile's IRS filing data changed on Grantable

  1. IRS filings on file for fiscal years 2021–2024

Leadership & Key People

Officers and directors from IRS filings

The David Mduffy Jr Foundation's 2024 filing lists 6 officers; none of the 6 officers listed in 2024 report compensation.

Officers on the 2024 filing

  • Adrienne Sebring

    Trustee

    On filings since 2021

    1 hr/week

    No compensation reported

  • David M. Duffy

    Trustee

    On filings since 2021

    10 hrs/week

    No compensation reported

  • Nancy Duffy

    Trustee

    On filings since 2021

    1 hr/week

    No compensation reported

  • Paul W. Duffy

    Trustee

    On filings since 2021

    1 hr/week

    No compensation reported

  • Ryan Kelly

    Trustee

    On filings since 2021

    1 hr/week

    No compensation reported

  • Susan Duffy

    Trustee

    On filings since 2021

    1 hr/week

    No compensation reported

Data from IRS Form 990 filings, 2021–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Frequently asked questions about The David Mduffy Jr Foundation

How much does The David Mduffy Jr Foundation give each year?

The David Mduffy Jr Foundation gave $34K across 7 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $24K across 5 grants.

What is The David Mduffy Jr Foundation's typical grant size?

The David Mduffy Jr Foundation's median grant in 2024 was $5,000, and its average grant was $4,857, across 7 grants on its 2024 IRS Form 990-PF.

Where does The David Mduffy Jr Foundation give grants?

The David Mduffy Jr Foundation gives mostly in New York: 100% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Bellport, NY (2 grants) and Brookhaven, NY (2 grants).

Does The David Mduffy Jr Foundation give general operating support?

Yes: 100% of The David Mduffy Jr Foundation's 2024 grants with a stated purpose (7 of 7) were for general or operating support, per its 2024 IRS Form 990-PF.

Who are The David Mduffy Jr Foundation's largest grantees?

The David Mduffy Jr Foundation's largest 2024 grantees include Harlem Lacrosse ($10,000), Boys Girls Club of the Bellport Are ($5,000) and The Dream Charter School ($5,000), according to its 2024 IRS Form 990-PF. Together they received 59% of its itemized 2024 grant dollars.

How large is The David Mduffy Jr Foundation?

The David Mduffy Jr Foundation reported $98K in total assets on its 2024 IRS Form 990-PF. It paid out $42K in qualifying distributions that year, against a required minimum of $6K (roughly 5% of its investment assets).

What is The David Mduffy Jr Foundation?

The David Mduffy Jr Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Garden City, NY. It holds $98K in total assets as of 2024.

What is The David Mduffy Jr Foundation's EIN?

The David Mduffy Jr Foundation's EIN (Employer Identification Number) is 87-6588743. IRS Form 990 filing data is available on this page for 2021–2024.

Data last updated September 2026. Sourced from IRS Form 990-PF filings.

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