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Form 990-PFTax year 2025EIN 46-4323935

Gigi & Averell H Mortimer Foundation

A private foundation in Harriman, NY. Its return for tax year 2025 lists 10 grants and $60,000 paid in grants.

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

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

    $60,000

    Grants listed
    10
    Assets, end of year
    $1,967,495

  • Tax year 2024

    $0

    Grants listed
    0
    Assets, end of year
    $1,431,678

  • Tax year 2023

    $0

    Grants listed
    0
    Assets, end of year
    $920,324

  • Tax year 2022

    $0

    Grants listed
    0
    Assets, end of year
    $565,506

  • Tax year 2021

    $0

    Grants listed
    0
    Assets, end of year
    $465,414

  • Tax year 2020

    $0

    Grants listed
    0
    Assets, end of year
    $303,804

  • Tax year 2019

    $3,000

    Grants listed
    1
    Assets, end of year
    $123,778

  • Tax year 2018

    $110,350

    Grants listed
    6
    Assets, end of year
    $3,812

Grants paid in 2025

10 grants, largest first

As listed on the return.

  1. Brandywire Conservancy & Museum of ArtChadds Ford, PA

    General support

    $15,000
  2. Palm Beach Zoo & Conservation SocietyWest Palm BCH, FL

    General support

    $10,000
  3. Cox Science Centre & AquariumWest Palm Beach, FL

    General support

    $10,000
  4. Tory Burch FoundationNew York, NY

    General suppport

    $10,000
  5. The Centre for DiscoveryHarris, NY

    General support

    $5,000
  6. The Everglades FoundationPalmetto Bay, FL

    General support

    $2,500
  7. Peconic Land TrustSouthampton, NY

    General support

    $2,500
  8. Orange County Historical SocietyArden, NY

    General support

    $2,500
  9. St Jude's Children HospitalMemphis, TN

    General support

    $1,500
  10. Vanderbilt UniversityNashville, TN

    General support

    $1,000

Where the money goes

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

  1. Animals1 grant $10,00038% of the total
  2. Human services1 grant $10,00038% of the total
  3. Environment2 grants $5,00019% of the total
  4. Education1 grant $1,0004% of the total

By State

Grants to organizations with a US address, latest year.

  1. Florida3 grants $22,500
  2. New York4 grants $20,000
  3. Pennsylvania1 grant $15,000
  4. Tennessee2 grants $2,500

Officers, directors and trustees

4 people as filed

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

  • Jean M MortimerCHAIRMAN Hours 0Pay $0
  • Averell H MortimerPRESIDENT/TREASURER Hours 0Pay $0
  • Maxwell H MortimerSECRETARY Hours 0Pay $0
  • Hume R SteyerASSISTANT SECRETARY Hours 0Pay $0

The return

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