The Timothy J. and Linda D. O'Neill Foundation concentrates large, general-purpose gifts to independent secondary schools and prominent higher‑education and medical institutions. Their grants favor elite private schools (particularly in the Greenwich/CT area) and major research/teaching hospitals and universities, with funding described as unrestricted or for general purposes. The foundation gives few but very large awards rather than many small grants, signaling a preference for institutional endowment or broad operating support.
Highly concentrated: very few, large general-purpose grants to a small set of institutional grantees rather than many small or project‑restricted awards.
A $4.15 million general-purpose gift to Georgetown University stands out in the Timothy J And Linda D O'Neill Foundation’s recent record, alongside seven-figure support for Weill Cornell Medicine, Greenwich Academy, and Brunswick School. The foundation’s grantmaking centers on institutional support for independent secondary schools, universities, and medical organizations, with most awards described as general charitable purpose or general purpose. Recent recipients include major research and teaching institutions as well as local community groups in Maine, Connecticut, and New York. That mix suggests a funder that makes both large anchor grants and smaller repeat awards, rather than spreading support across many sectors. The largest awards go to higher education and medicine, while smaller gifts appear among conservation, emergency services, libraries, and community organizations. The pattern is consistent with discretionary support for established institutions, especially schools in Greenwich, CT, and major academic or health systems. The foundation also gave repeated support to several local organizations, including Kennebunkport Emergency Medical Services and Round Hill Volunteer Fire Company, showing that it maintains some ongoing relationships alongside large one-time grants.
Higher education is a major theme in the foundation’s grantmaking. Georgetown University received $4.15 million for general purpose, and Roger Lehecka Double Discovery Center at Columbia received $1,000 for general purpose. Medical and hospital support is another clear area: Weill Cornell Medicine received $1.5 million for general charitable purpose, while Children’s National Medical Center received $100,000 for general charitable purpose and Hospital for Special Surgery received $5,000 for general purpose. The foundation also funds independent schools, with Greenwich Academy receiving $1,024,975 and Brunswick School receiving $1,015,861, both for general charitable purpose. Beyond those institutional gifts, it made smaller community awards to organizations such as Friends Of Cape Arundel Inc and Kennebunkport Conservation Trust.
The foundation’s reported grant-size profile is tightly clustered at the low end of its distribution, with a p25 of $1,000, a median of $1,000, and a p75 of $5,000. At the same time, its recent record includes a few much larger institutional grants, which suggests a dual pattern of small local gifts and occasional major awards. Some recipients appear more than once across 2024 and 2025, including Kennebunkport Emergency Medical Services, Kennebunkport Conservation Trust, Round Hill Volunteer Fire Company, and the Barbara Bush Foundation, indicating repeat support rather than purely one-off giving. The foundation is a private family foundation and does not make program-related investments.
$2.6M
$7.2M
$296K
$2.6M
Most grants fall between $1K and $5K, with a median of $1K.
25th Percentile
$1K
Median
$1K
75th Percentile
$5K
About 18% of grants go to recipients in ME.
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Notable grantees: Georgetown University, Weill Cornell Medicine, Greenwich Academy, Brunswick School, Children's National Medical Center
The largest concentration of grants goes to Maine, which is the top state by grant count, even though the foundation is headquartered in New York, NY. Recent Maine recipients include Cape Porpoise, Kennebunkport, South Portland, and Kennebunkport-related organizations. New York City also appears multiple times through recipients in New York, NY. Outside those areas, Washington, DC and Greenwich, CT are prominent recipient locations, with several grants also landing in those cities. All recent grants in the provided sample went to U.S. recipients.
Its recent grants go mainly to independent secondary schools, universities, and medical institutions. The record also includes community organizations, conservation groups, volunteer emergency services, libraries, and cultural institutions, all funded with general-purpose or general charitable purpose language.
The foundation’s grant-size distribution is concentrated at small amounts: p25 is $1,000, median is $1,000, and p75 is $5,000. That distribution sits alongside a few much larger awards in the recent data.
Yes. Several recipients appear in more than one year, including Kennebunkport Emergency Medical Services, Kennebunkport Conservation Trust, Round Hill Volunteer Fire Company, and the Barbara Bush Foundation. That shows a mix of recurring support and one-time larger gifts.
Maine is the top state by grant count. Recent recipient cities in Maine include Kennebunkport, Cape Porpoise, and South Portland, while New York, Washington, DC, and Greenwich also appear in the grant list.
2026
Source: IRS Form 990-PF, fiscal year 2026.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| Greenwich Academy | Greenwich, CT | $1,015,000 | 2026 | General Purpose |
| Brunswick School | Greenwich, CT | $1,010,000 | 2026 | General Purpose |
| Weill Cornell Medicine | New York, NY | $496,192 | 2026 | General Charity |
| St Ann's Episcopal Church | Nashville, TN | $25,000 | 2026 | General Purpose |
| Georgetown University | Washington, DC | $15,000 | 2026 | General Purpose |
| Friends of the Portland Community Free Clinic | South Portland, ME | $5,000 | 2026 | General Purpose |
| Round Hill Volunteer Fire Company | Greenwich, CT | $2,000 | 2026 | General Purpose |
| Kennebunkport EMS | Kennebunkport, ME | $2,000 | 2026 | General Purpose |
| Kennebunkport Conservation Trust | Cape Kennebunkport, ME | $2,000 | 2026 | General Purpose |
| Greenwich Professional Firefighters | Greenwich, CT | $1,000 | 2026 | General Purpose |
| Weill Cornell Medicine | New York, NY | $1,500,000 | 2025 | General Charitable Purpose |
| Greenwich Academy | Greennwhich, CT | $1,024,975 | 2025 | General Charitable Purpose |
| Brunswick School | Greenwich, CT | $1,015,861 | 2025 | General Charitable Purpose |
| Friends Of Cape Arundel Inc | Kennebunkport, CT | $100,000 | 2025 | General Charitable Purpose |
| Kennebunkport Conservation Trust | Cape Porpoise, ME | $8,000 | 2025 | General Charitable Purpose |
| The Metropolitan Museum Of Art | New York, NY | $5,000 | 2025 | General Charitable Purpose |
| The Barbara Bush Foundation for Family Literacy | Washington, DC | $5,000 | 2025 | General Charitable Purpose |
| Louis T Graves Memorial Public Library Association | Kennebunkport, ME | $1,000 | 2025 | General Charitable Purpose |
| Friends Of The Portland Community Free Clinic | South Portland, ME | $1,000 | 2025 | General Charitable Purpose |
| Round Hill Volunteer Fire Company | Greenwich, CT | $1,000 | 2025 | General Charitable Purpose |
| Kennebunkport Emergency Medical Services | Kennebunkport, ME | $1,000 | 2025 | General Charitable Purpose |
| Georgetown University | Washington, DC | $4,150,000 | 2024 | GENERAL PURPOSE |
| Children's National Medical Center | Washington, DC | $100,000 | 2024 | General Charitable Purpose |
| Kennebunkport Conservation Trust | Cape Porpoise, ME | $10,000 | 2024 | General Charitable Purpose |
| Answer the call | New York, NY | $5,000 | 2024 | General Charitable Purpose |
| Hospital for Special Surgery | NEW YORK, NY | $5,000 | 2024 | GENERAL PURPOSE |
| Barbara Bush Foundation | Washington, DC | $5,000 | 2024 | GENERAL PURPOSES |
| Round Hill Volunteer Fire Company | Greenwich, CT | $1,000 | 2024 | General Purpose |
| Kennebunkport Conservation Trust | Cape Porpoise, ME | $1,000 | 2024 | GENERAL PURPOSE |
| Roger Lehecka Double Discovery Center at Columbia | NEW YORK, NY | $1,000 | 2024 | GENERAL PURPOSE |
| Round Hill Volunteer Fire Company | Greenwich, CT | $1,000 | 2024 | General Charitable Purpose |
| Kennebunkport Emergency Medical Services | Kennebunkport, ME | $1,000 | 2024 | General Charitable Purpose |
| Kennebunkport Emergency Medical Services | Kennebunkport, ME | $1,000 | 2024 | GENERAL PURPOSE |
| Meadow Woods Preserve | KENNEBUNKPORT, ME | $1,000 | 2024 | GENERAL PURPOSE |
Greenwich Academy
$1,015,000General Purpose
Weill Cornell Medicine
$496,192General Charity
St Ann's Episcopal Church
$25,000General Purpose
Friends of the Portland Community Free Clinic
$5,000General Purpose
Round Hill Volunteer Fire Company
$2,000General Purpose
Kennebunkport EMS
$2,000General Purpose
Kennebunkport Conservation Trust
$2,000General Purpose
Greenwich Professional Firefighters
$1,000General Purpose
Weill Cornell Medicine
$1,500,000General Charitable Purpose
Greenwich Academy
$1,024,975General Charitable Purpose
Friends Of Cape Arundel Inc
$100,000General Charitable Purpose
Kennebunkport Conservation Trust
$8,000General Charitable Purpose
The Barbara Bush Foundation for Family Literacy
$5,000General Charitable Purpose
Louis T Graves Memorial Public Library Association
$1,000General Charitable Purpose
Friends Of The Portland Community Free Clinic
$1,000General Charitable Purpose
Round Hill Volunteer Fire Company
$1,000General Charitable Purpose
Kennebunkport Emergency Medical Services
$1,000General Charitable Purpose
Children's National Medical Center
$100,000General Charitable Purpose
Kennebunkport Conservation Trust
$10,000General Charitable Purpose
Answer the call
$5,000General Charitable Purpose
Round Hill Volunteer Fire Company
$1,000General Purpose
Kennebunkport Conservation Trust
$1,000GENERAL PURPOSE
Roger Lehecka Double Discovery Center at Columbia
$1,000GENERAL PURPOSE
Round Hill Volunteer Fire Company
$1,000General Charitable Purpose
Kennebunkport Emergency Medical Services
$1,000General Charitable Purpose
Kennebunkport Emergency Medical Services
$1,000GENERAL PURPOSE
Meadow Woods Preserve
$1,000GENERAL PURPOSE