The Connecticut State Capitol

Form 990-PFTax year 2025EIN 06-1467469

The Warren Foundation Inc

A private foundation in Greenwich, CT. Its return for tax year 2025 lists 8 grants and $59,850 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

Accepts applications

The return gives an application contact and rules, as below.

Contact
Chris Milliganco Rhodes O'Neill
35 Field Point Road
Greenwich, CT 06830
(860) 798-2890
Form and materials
None
Deadlines
None
Restrictions
None

Assets and giving by year

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

    $59,850

    Grants listed
    8
    Assets, end of year
    $203,223
  • Tax year 2024

    $80,500

    Grants listed
    8
    Assets, end of year
    $203,140
  • Tax year 2023

    $99,000

    Grants listed
    14
    Assets, end of year
    $139,195
  • Tax year 2022

    $79,670

    Grants listed
    10
    Assets, end of year
    $189,061
  • Tax year 2021

    $189,250

    Grants listed
    6
    Assets, end of year
    $257,728
  • Tax year 2020

    $103,500

    Grants listed
    8
    Assets, end of year
    $269,951
  • Tax year 2019

    $185,858

    Grants listed
    11
    Assets, end of year
    $353,377
  • Tax year 2018

    $239,350

    Grants listed
    13
    Assets, end of year
    $617,808

Grants paid in 2025

8 grants, largest first

As listed on the return.

  1. Columbia UniversityNew York, NY

    Donation of $50,000.

    $50,000
  2. Hospital for Special SurgeryNew York, NY

    Donations of $5,000 & $1,500.

    $6,500
  3. 1915 SocietyNew York, NY

    Donation of $1,000.

    $1,000
  4. Upstate Medical CenterSyracuse, NY

    Donations of $250 & $500.

    $750
  5. Ases FoundationSchaumburg, IL

    Donation of $500.

    $500
  6. Diabetes Research Institute FoundationMiami, FL

    Donation of $500.

    $500
  7. Old Blue Rugby FoundationGreenwich, CT

    Donation of $500.

    $500
  8. The Triumph FundGreenwich, CT

    Donation of $100.

    $100

Where the money goes

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

  1. Education1 grant $50,00088% of the total
  2. Health1 grant $6,50011% of the total
  3. Medical research1 grant $500<1% of the total
  4. Sports and recreation1 grant $100<1% of the total

By State

Grants to organizations with a US address, latest year.

  1. New York4 grants $58,250
  2. Connecticut2 grants $600
  3. Florida1 grant $500
  4. Illinois1 grant $500

Officers, directors and trustees

4 people as filed

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

  • Russell F Warren MDPRESIDENT/DIRECTOR Hours 0Pay $0
  • Russell F Warren JrVP/DIRECTOR Hours 0Pay $0
  • Lisa Warren KrugerDIRECTOR Hours 0Pay $0
  • Christopher R MilliganSECRETARY Hours 0Pay $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 Alec and Tamar Ellison Family FoundationGreenwich, CT 4 grants Preselected only $55,000 giving
  2. Cameron Family Foundation IncGreenwich, CT 8 grants Preselected only $68,500 giving
  3. Nemerov Charitable Foundation IncGreenwich, CT 5 grants Accepts applications $49,330 giving
  4. The Stuart Foundation IncGreenwich, CT 28 grants Preselected only $73,000 giving
  5. The Christian and Katharine Roth Family FoundationGreenwich, CT 29 grants Preselected only $74,813 giving