The United States Capitol in Washington, DC

Form 990-PFTax year 2025EIN 23-3058554

Claire Williams Oneil Foundation

A private foundation in Washington, DC. Its return for tax year 2025 lists 13 grants and $86,780 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

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

    $86,780

    Grants listed
    13
    Assets, end of year
    $676,596
  • Tax year 2024

    $82,728

    Grants listed
    12
    Assets, end of year
    $697,296
  • Tax year 2023

    $68,026

    Grants listed
    10
    Assets, end of year
    $745,125
  • Tax year 2022

    $61,850

    Grants listed
    10
    Assets, end of year
    $789,067
  • Tax year 2021

    $58,175

    Grants listed
    9
    Assets, end of year
    $828,518
  • Tax year 2020

    $60,238

    Grants listed
    8
    Assets, end of year
    $748,096
  • Tax year 2019

    $70,620

    Grants listed
    10
    Assets, end of year
    $1,038,107
  • Tax year 2018

    $71,500

    Grants listed
    8
    Assets, end of year
    $979,355

Grants paid in 2025

13 grants, largest first

As listed on the return. Grants to individuals show as “Individual”, with purpose and amount only.

  1. Individual

    scholarship

    $10,000
  2. Individual

    scholarship

    $10,000
  3. Individual

    scholarship

    $10,000
  4. Individual

    Scholarship

    $10,000
  5. Individual

    Scholarship

    $10,000
  6. Individual

    Scholarship

    $10,000
  7. Individual

    scholarship

    $6,000
  8. Individual

    Scholarship

    $5,000
  9. Individual

    Scholarship

    $5,000
  10. Individual

    Scholarship

    $5,000
  11. Individual

    Scholarship

    $2,500
  12. Individual

    Scholarship

    $2,000
  13. Susquehanna Community School DistriSusquehanna, PA

    Field trips/5K

    $1,280

Where the money goes

By State

Grants to organizations with a US address, latest year.

  1. Pennsylvania1 grant $1,280

Officers, directors and trustees

4 people as filed

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

  • Roger O'NeilPresident Hours 0Pay $0
  • Joan Mathewson O'NeilVice President Hours 0Pay $0
  • Ellen R FlanaganSecretary Hours 0Pay $0
  • Michael FlanaganTreasurer Hours 0Pay $0

The return

More foundations

Other foundations in District of Columbia

  1. The Brian P Hehir and Janet S Hehir Family Foundation Dated 12/1/2006Washington, DC 6 grants Preselected only $87,100 giving
  2. Smith & Atcheson Fund for Excellence IncWashington, DC 8 grants Preselected only $86,238 giving
  3. Paulson Charitable Foundation IncWashington, DC 18 grants Preselected only $86,000 giving
  4. The Estelle Friedman Gervis Charitable Foundation IncWashington, DC 3 grants Preselected only $85,521 giving
  5. Vradenburg FoundationWashington, DC 14 grants Preselected only $85,413 giving