The Delaware State Capitol

Form 990-PFTax year 2025EIN 05-6141146

MacMahon Family Charitable Foundation

A private foundation in Wilmington, DE. Its return for tax year 2025 lists 15 grants and $660,500 paid in grants.

Tax year 2025 (period ending Dec 31, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

6 returns on file
Grants paid by tax year. The latest year is in blue.
  • Tax year 2025

    $660,500

    Grants listed
    15
    Assets, end of year
    $3,320,886
  • Tax year 2024

    $690,000

    Grants listed
    23
    Assets, end of year
    $3,044,062
  • Tax year 2023

    $1,435,500

    Grants listed
    17
    Assets, end of year
    $2,697,987
  • Tax year 2022

    $1,495,050

    Grants listed
    26
    Assets, end of year
    $3,520,492
  • Tax year 2021

    $1,502,360

    Grants listed
    21
    Assets, end of year
    $4,050,061
  • Tax year 2020

    $1,461,000

    Grants listed
    24
    Assets, end of year
    $5,037,408

Grants paid in 2025

15 grants, largest first

As listed on the return.

  1. UNC Health Foundation IncChapel Hill, NC

    General & Unrestricted

    $350,000
  2. Kent Place SchoolSummit, NJ

    General & Unrestricted

    $150,000
  3. Chatham Day School IncChatham, NJ

    General & Unrestricted

    $37,500
  4. Pingry CorporationBasking Ridge, NJ

    General & Unrestricted

    $27,500
  5. Seton Hall Preparatory SchoolWest Orange, NJ

    General & Unrestricted

    $25,000
  6. Elon UniversityElon, NC

    General & Unrestricted

    $20,000
  7. Saint Peters UniversityJersey City, NJ

    General & Unrestricted

    $17,500
  8. Morristown-Beard SchoolMorristown, NJ

    General & Unrestricted

    $12,500
  9. Fairfield UniversityFairfield, CT

    General & Unrestricted

    $10,000
  10. Boston CollegeChestnut Hill, MA

    General & Unrestricted

    $5,000
  11. American Cancer Society IncHagerstown, MD

    General & Unrestricted

    $2,000
  12. Bosom Buddies of New Jersey A NJ Nonprofit CorporaCranford, NJ

    General & Unrestricted

    $1,000
  13. Community Foundation of New JerseyMorristown, NJ

    General & Unrestricted

    $1,000
  14. Grow Church IncNaples, FL

    General & Unrestricted

    $1,000
  15. Save Barnegat Bay IncToms River, NJ

    General & Unrestricted

    $500

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Education9 grants $630,000100% of the total
  2. Philanthropy and grantmaking1 grant $1,000<1% of the total
  3. Religion1 grant $1,000<1% of the total
  4. Environment1 grant $500<1% of the total

By State

Grants to organizations with a US address, latest year.

  1. North Carolina2 grants $370,000
  2. New Jersey9 grants $272,500
  3. Connecticut1 grant $10,000
  4. Massachusetts1 grant $5,000
  5. Maryland1 grant $2,000
  6. Florida1 grant $1,000

Officers, directors and trustees

4 people as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Sarah Mac MahonTrustee Hours 1Pay $0
  • Kelly Mac Mahon EwingTrustee Hours 1Pay $0
  • Lauren Mac Mahon HandTrustee Hours 1Pay $0
  • Thomas P MacMahonTrustee Hours 1Pay $0

The return

More foundations

Similar foundations

Same main cause (education), giving between a quarter and four times this foundation’s where possible, nearby first.

  1. The John C Griswold Family FoundationWilmington, DE 76 grants Preselected only $656,960 giving
  2. Herman Goldman FoundationWilmington, DE 84 grants Preselected only $655,000 giving
  3. The Appel Family FoundationWilmington, DE 2 grants Preselected only $666,667 giving
  4. Umsizi FundWilmington, DE 4 grants Preselected only $670,000 giving
  5. The Swoboda Family FoundationWilmington, DE 4 grants Preselected only $650,000 giving