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Form 990-PFTax year 2024EIN 06-6487034

Osullivan Foundation Trust DTD 122299

A private foundation in Princeton, NJ. Its return for tax year 2024 lists 13 grants and $3.6 million paid in grants.

See which foundations fund work like yours Matching by cause, place and grant size

Tax year 2024 (period ending Dec 31, 2024), 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

7 returns on file
Grants paid by tax year. The latest year is in blue.

  • Tax year 2024

    $3,623,700

    Grants listed
    13
    Assets, end of year
    $24,039,901

  • Tax year 2023

    $1,002,159

    Grants listed
    16
    Assets, end of year
    $23,644,350

  • Tax year 2022

    $883,658

    Grants listed
    In an attachment
    Assets, end of year
    $22,078,815

  • Tax year 2021

    $1,967,952

    Grants listed
    1
    Assets, end of year
    $17,620,151

  • Tax year 2020

    $999,976

    Grants listed
    In an attachment
    Assets, end of year
    $19,237,611

  • Tax year 2019

    $1,031,450

    Grants listed
    In an attachment
    Assets, end of year
    $16,308,696

  • Tax year 2018

    $1,214,000

    Grants listed
    5
    Assets, end of year
    $9,770,068

Grants paid in 2024

13 grants, largest first

As listed on the return.

  1. Khan AcademyMountain View, CA

    Online education services support

    $1,405,600
  2. Rensselaer Polytechnic InstituteTroy, NY

    Education

    $1,405,600
  3. The Brain FoundationPleasanton, CA

    Autism resarch

    $550,000
  4. Multiple Hub IncBeverly Hills, CA

    Autism services

    $50,000
  5. International Assocation of Spelling as CommunicationHerndon, VA

    Autism communication, training, advocacy

    $40,000
  6. International Assocation of Spelling as CommunicationHerndon, VA

    Autism communication, training, advocacy

    $40,000
  7. International Assocation of Spelling as CommunicationHerndon, VA

    Autism communication, training, advocacy

    $40,000
  8. International Assocation of Spelling as CommunicationHerndon, VA

    Autism communication, training, advocacy

    $40,000
  9. US Ireland AllianceArlington, VA

    Scholarships & operations

    $25,000
  10. Autism Science FoundationScarsdale, NY

    Autism research

    $10,000
  11. The Learning CooperativesLanghorne, PA

    Education

    $10,000
  12. Mount St Dominic AcademyCaldwell, NJ

    Education

    $5,000
  13. Mercy for AnimalsLos Angeles, CA

    Animal welfare

    $2,500

Where the money goes

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

  1. Education2 grants $2,811,20083% of the total
  2. Health2 grants $560,00016% of the total
  3. International aid1 grant $25,000<1% of the total
  4. Animals1 grant $2,500<1% of the total

By State

Grants to organizations with a US address, latest year.

  1. California4 grants $2,008,100
  2. New York2 grants $1,415,600
  3. Virginia5 grants $185,000
  4. Pennsylvania1 grant $10,000
  5. New Jersey1 grant $5,000

Officers, directors and trustees

3 people as filed

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

  • Sean M O'SullivanTRUSTEE Hours 1Pay $0
  • Marie T O'SullivanTRUSTEE Hours 1Pay $0
  • Anne S O'SullivanTRUSTEE Hours 1Pay $0

The return

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