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· Private foundation

Leita & William Hamill Foundation Inc

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$87k
Granted FY2025still arriving
29
Grants FY2025still arriving
10
States reached
$25k
Largest
01What it funds
0196% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Education$253kHealth$33kScience & Tech$30kArts & Culture$30kEnvironment$21kHousing & Shelter$19kPublic Safety & Disaster$10kRecreation & Sports$6kOther$0
02FY2025 · 29 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k26 grants · $42k
  • $10k–50k3 grants · $45k
$1,000
Median grant
10
States reached
$77k
Total assets
Largest grants
RecipientAmount
Lawrenceville School$25,000
Little Peaks$10,000
Holton Arms School$10,000
Cape Eleuthera Foundation$5,000
Planned Parenthood of Mercer Area$5,000
World Central Kitchen$5,000
Rectory School$3,000
Keewaydin Foundation$3,000
Oliver Scholars$3,000
Trenton Area Soup Kitchen$3,000
One Eleuthera Foundation$2,500
Individual grant recipient$2,000
Dreamweaver Equine Center$1,000
Individual grant recipient$1,000
AU Sable Club Preservation Foundati$1,000
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Its human-services grants (FY22–24, $2k) land where the poverty rate runs at 11%, against an area that typically sits at 9%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 9%Rescue Mission of Trenton: $1k → 11%Rescue Mission of Trenton: $500 → 11%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

ME
VT
MT
NY
MA
PA
NJ
CT
CA
MD
DC
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

77%of every dollar goes to organizations it has funded before.
$442k · 36 repeat orgs$130k to everyone else

Grantees it renews have grown median revenue +56% since the first grant, against +19% for those funded once.

36 repeat relationships: 25 still active in FY2025, 11 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

36
13

Total granted

$442k
$117k

Median revenue growth · since first grant

+56%
+19%

Still filing today

69%
69%

New vs renewed · share of each year

In FY2025, 85% of grant dollars renewed an existing relationship; $13k went to new ones.

50%100%’17’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’19’20’21’22’23’24’25
EducationArts & CultureEnvironmentPhilanthropyInternationalRecreation & SportsOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.

Backed again, and grew

  • TH
    THE HOLTON ARMS SCHOOL
    8× · 2017–2025 · $60k · revenue +29%
  • CAPE ELEUTHERA FOUNDATION INC
    4× · 2017–2025 · $35k · revenue +216%
  • AC
    AUSABLE CLUB PRESERVATION FOUNDATION
    8× · 2017–2025 · $25k · revenue +88%

Funded once

  • IG
    Individual grant recipient
    one grant, 2023 · $60k
  • COLLEGE OF THE ATLANTIC
    one grant, 2023 · $50k · revenue +14%
  • ARTS ED NJ INC
    one grant, 2022 · $1k · revenue -24%
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
The Peak School

The peak school seeks to ignite a passion for learning, to develop students of diverse talents and backgrounds who think critically and act with integrity, and to graduate compassionate, confident, capable students who will embrace their…

Education
2
Masters School

The masters school celebrates active participation, deep understanding, and meaningful connection. a community of diverse individuals, we gather to learn, to strive, to dare, to do - to be a power for good in the world.

—
3
Dickinson College

Dickinson college provides a useful, innovative and interdisciplinary education in the liberal arts and sciences to prepare students to lead rich and fulfilling lives of engaged global citizenship

Education
4
The Adirondack Council Inc

The adirondack council ensures the ecological integrity (clean water and air, wildlife habitat, etc.), wild character (solitude, scenic beauty, etc.), and vibrant communities of new york's six-million-acre adirondack park. the adirondack…

Environment
5
Phillips Exeter Academy

Unite goodness and knowledge and inspire youth from every quarter to lead purposeful lives. [text in quotations is taken from the academy's deed of gift, drafted in 1781] knowledge and goodness "above all, it is expected that the attention…

Education
6
Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation

The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.

Science & Tech
7
Avery Coonley School

The Avery Coonley School elevates high-achieving and gifted learners through immersion in a mutually talented community where intellect, curiosity, and creativity are enhanced by optimal challenge.

—
8
The Trustees of Princeton University

Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…

Education
9
Trustees of Deerfield Academy

Deerfield academy is an independent secondary school committed to high standards of scholarship, citizenship, and personal responsibility. through a rigorous liberal arts curriculum, extensive co-curricular program, and supportive…

Education
10
Hudson River Foundation for Science and Environmental Research Inc

The mission of the hudson river foundation is to inspire and inform action through science and engaging people to enhance the hudson river, estuary, and watershed (see schedule o).

Environment
11
The Laurence School

Laurence endeavors to develop the unique abilities and potential of each of its students in a diverse, inclusive and supportive learning community, where rich traditions and an innovative curriculum foster educational excellence and joy in…

Education
12
Darrow School

Darrow school is dedicated to serving students with diverse backgrounds and abilities, building on each student's talents and interests to inspire enduring confidence for success in college and life. this mission is accomplished through…

Education
How this is measured
The grantee most central to the portfolio’s shape is The Oliver Scholars Program Inc; the most unlike its peers is The Osc Charitable Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

40 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 40 of the 53 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
9
Early backer (in before they grew)
38/40
Grantees still filing
28/40
Grew since first funded

Where the money sits, by cause and then by grantee

Individual grant recipient: $60,000 · OtherIndividual grant recipientCOLLEGE OF THE ATLANTIC: $50,000 · OtherCOLLEGE OF THE ATLANTICTHE OLIVER SCHOLARS PROGRAM INC: $26,500 · OtherTHE OLIVER SCHOLARS PROGRAM INCPlanned Parenthood of Mercer Area: $26,000 · OtherPlanned Parenthood of Mercer AreaThe Island School: $16,000 · OtherThe Island School+24 more: $68,550 · Other+24 moreTRUSTEES OF THE LAWRENCEVILLE SCHOOL: $109,000 · EducationTRUSTEES OF THE LAWRENCEVILLE SCHOOLTHE HOLTON ARMS SCHOOL: $60,000 · EducationTHE HOLTON ARMS SCHOOLTHE RECTORY SCHOOL INC: $16,000 · EducationTHE RECTORY SCHOOL INCLITTLE PEAKS INC: $10,000 · Education+5 more: $7,750 · EducationCAPE ELEUTHERA FOUNDATION INC: $35,000 · InternationalCAPE ELEU…WORLD CENTRAL KITCHEN INC: $11,000 · InternationalWORLD CEN…AUSABLE CLUB PRESERVATION FOUNDATION: $25,000 · Arts & CultureGRAMERCY PARK BLOCK ASSOC INC: $3,500 · Arts & CultureNEW YORK PUBLIC RADIO: $1,250 · Arts & Culture+1 more: $500 · Arts & CultureADIRONDACK LAND TRUST INC: $11,000 · EnvironmentAUSABLE FRESHWATER CENTER INCORPORATED: $6,450 · EnvironmentRUBY HABITAT FOUNDATION: $1,400 · EnvironmentNEW JERSEY CONSERVATION FOUNDATION: $1,000 · EnvironmentISLES INC: $18,250 · Housing & ShelterEARLY STEPS INC: $6,000 · PhilanthropyADIRONDACK FOUNDATION: $2,750 · PhilanthropyHigh Peaks Education Foundation: $1,500 · PhilanthropyTHE OSC CHARITABLE FOUNDATION: $500 · Philanthropy
Other$247,050Education$202,750International$46,000Arts & Culture$30,250Environment$19,850Housing & Shelter$18,250Philanthropy$10,750

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetTRUSTEES OF THE LAWRENCEVILLE SCHOOL: $109,000 over 8y, 0.0% of budgetTHE HOLTON ARMS SCHOOL: $60,000 over 8y, 0.0% of budgetCOLLEGE OF THE ATLANTIC: $50,000 over 1y, 0.2% of budgetCAPE ELEUTHERA FOUNDATION INC: $35,000 over 4y, 0.5% of budgetTHE OLIVER SCHOLARS PROGRAM INC: $26,500 over 8y, 0.2% of budgetAUSABLE CLUB PRESERVATION FOUNDATION: $25,000 over 8y, 2.5% of budgetISLES INC: $18,250 over 8y, 0.3% of budgetTHE RECTORY SCHOOL INC: $16,000 over 8y, 0.0% of budgetWORLD CENTRAL KITCHEN INC: $11,000 over 5y, 0.0% of budgetADIRONDACK LAND TRUST INC: $11,000 over 7y, 0.1% of budgetLITTLE PEAKS INC: $10,000 over 1y, 1.4% of budgetTASK Inc Trenton Area Soup Kitchen Inc: $8,000 over 6y, 0.0% of budgetTHE KEEWAYDIN FOUNDATION: $7,000 over 4y, 0.0% of budgetAUSABLE FRESHWATER CENTER INCORPORATED: $6,450 over 8y, 0.3% of budgetAcadia Family Center: $5,750 over 4y, 0.4% of budgetVERMONT ACADEMY: $4,500 over 5y, 0.0% of budgetLawrenceville Main Street: $4,500 over 5y, 1.4% of budgetGRAMERCY PARK BLOCK ASSOC INC: $3,500 over 8y, 0.1% of budgetDREAMWEAVER EQUINE CENTER CORP: $3,000 over 2y, 0.6% of budgetADIRONDACK FOUNDATION: $2,750 over 6y, 0.0% of budgetADIRONDACK TRAIL IMPROVEMENT SOCIETY INC: $2,600 over 7y, 0.2% of budgetONE ELEUTHERA FOUNDATION: $2,500 over 1y, 0.1% of budgetThe Petey Greene Program Inc: $2,250 over 6y, 0.0% of budgetRescue Mission of Trenton New Jersey: $1,500 over 2y, 0.0% of budgetHigh Peaks Education Foundation: $1,500 over 4y, 2.0% of budgetHomeWorks Trenton: $1,500 over 2y, 0.1% of budgetRUBY HABITAT FOUNDATION: $1,400 over 5y, 0.1% of budgetNEW YORK PUBLIC RADIO: $1,250 over 3y, 0.0% of budgetNEW JERSEY CONSERVATION FOUNDATION: $1,000 over 2y, 0.0% of budgetARTS ED NJ INC: $1,000 over 1y, 0.1% of budgetSANDY HOOK PROMISE FOUNDATION: $1,000 over 1y, 0.0% of budgetGIFFORDS LAW CENTER TO PREVENT GUN VIOLENCE: $1,000 over 1y, 0.0% of budgetINTEGRITY FIRST FOR AMERICA INC: $1,000 over 1y, 0.0% of budgetMIDDLESEX SCHOOL: $500 over 1y, 0.0% of budgetTHE GUNSTON SCHOOL INC: $500 over 1y, 0.0% of budgetTHE OSC CHARITABLE FOUNDATION: $500 over 1y, 0.2% of budgetARTS COUNCIL OF PRINCETON: $500 over 1y, 0.0% of budgetDE LA SALLE ACADEMY: $250 over 1y, 0.0% of budgetTHE NATIONAL MENTORING PARTNERSHIP INC: $250 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

  • Who funds TRUSTEES OF THE LAWRENCEVILLE SCHOOL ↗
  • Who funds THE HOLTON ARMS SCHOOL ↗
  • Who funds COLLEGE OF THE ATLANTIC ↗
  • Who funds CAPE ELEUTHERA FOUNDATION INC ↗
  • Who funds THE OLIVER SCHOLARS PROGRAM INC ↗
  • Who funds AUSABLE CLUB PRESERVATION FOUNDATION ↗
  • Who funds ISLES INC ↗
  • Who funds THE RECTORY SCHOOL INC ↗
  • Who funds WORLD CENTRAL KITCHEN INC ↗
  • Who funds ADIRONDACK LAND TRUST INC ↗
  • Who funds LITTLE PEAKS INC ↗
  • Who funds TASK Inc Trenton Area Soup Kitchen Inc ↗
  • Who funds THE KEEWAYDIN FOUNDATION ↗
  • Who funds AUSABLE FRESHWATER CENTER INCORPORATED ↗
  • Who funds EARLY STEPS INC ↗
  • Who funds Acadia Family Center ↗
  • Who funds VERMONT ACADEMY ↗
  • Who funds Lawrenceville Main Street ↗
  • Who funds GRAMERCY PARK BLOCK ASSOC INC ↗
  • Who funds DREAMWEAVER EQUINE CENTER CORP ↗
  • Who funds ADIRONDACK FOUNDATION ↗
  • Who funds ADIRONDACK TRAIL IMPROVEMENT SOCIETY INC ↗
  • Who funds ONE ELEUTHERA FOUNDATION ↗
  • Who funds The Petey Greene Program Inc ↗
  • Who funds Rescue Mission of Trenton New Jersey ↗
  • Who funds High Peaks Education Foundation ↗
  • Who funds HomeWorks Trenton ↗
  • Who funds RUBY HABITAT FOUNDATION ↗
  • Who funds NEW YORK PUBLIC RADIO ↗
  • Who funds NEW JERSEY CONSERVATION FOUNDATION ↗

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Princeton Area Community Foundation IncNJ20.9× affinity8 shared granteesties to 10 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Princeton Area Community Foundation Inc · William and Gayle Chorske Family Foundation · Baldwin Foundation Trust · Bristol-Myers Squibb Foundation Inc · The Burke Foundation Inc · Adirondack Foundation · The Robert Wood Johnson Foundation · The Pfizer Foundation Inc · Vanguard Charitable Endowment Program · Jewish Communal Fund · The New York Community Trust · National Philanthropic Trust

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization Leita & William Hamill Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Leita & William Hamill Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 70%0%1%3%5%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 8%
  • The Petey Greene Program Inc: 29% of income from government
  • Arts Ed Nj Inc: 21% of income from government
  • Isles Inc: 21% of income from government
  • Rescue Mission of Trenton New Jersey: 8% of income from government
  • HomeWorks Trenton: 6% of income from government
  • Arts Council of Princeton: 6% of income from government
  • Sandy Hook Promise Foundation: 0% of income from government
  • The Rectory School Inc: 0% of income from government
no gov moneyreceives it· size = income
7get no government money at all
7report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
typical government reliance, FY20–25
How this is measured
Government income is each org’s traced federal awards (USASpending grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that a grant caused the public funding. Coverage is precision-first, a floor rather than a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12 to 24 months.
05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Leita & William Hamill Foundation Inc?

Find your warmest path to Leita & William Hamill Foundation Inc through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 53 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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