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The Deane A and John D Gilliam Foundation at a glance

· Private foundation

The Deane A and John D Gilliam Foundation

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.

$2.4M
Granted FY2025still arriving
65
Grants FY2025still arriving
14
States reached
$200k
Largest
01What it fundsRead
02Its granteesRead
03Its fieldRead
04Through PlinthRead
01What it funds
0194% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Environment$469kEducation$418kArts & Culture$317kRecreation & Sports$200kHuman Services$133kReligion$126kYouth Development$92kAnimals$29kOther$0
02FY2025 · 65 grants

Where the money goes

Grants by size, and the largest recipients.

How this is measured
The 65 grants below total $1,367,480, the rows itemized in this filing. The $2,378,480 headline is the total grant expense on the return; the other $1,011,000 is giving the schedule does not break out (grants under the $5,000 itemization floor, grants to individuals, grants on other schedules). Every figure below describes the itemized rows only.

By grant size · FY2025

  • Under $10k48 grants · $75k
  • $10k–50k8 grants · $118k
  • $50k–250k9 grants · $1.2M
$1,460
Median grant
14
States reached
$8.7M
Total assets
Largest grants
RecipientAmount
Marsh Sanctuary Inc.$200,000
Salisbury School Inc$200,000
Central Park Conservancy$150,000
World Wildlife Fund$150,000
Manhattan Theatre Club$100,000
Incarnation Camp$100,000
Mianus River Gorge Inc$100,000
Single Parent Resource Center$100,000
Salisbury School$75,000
564 Park Avenue Preservation Foundation$25,000
Avon Old Farms School Inc.$20,000
American Society for the Prevention of Cruelty to Animals$15,000
S A V A Inc.$15,000
Wellesley College$12,500
Incarnation Center Incorporated$10,000
02Its grantees
repeat funding

Who it funds again

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

86%of every dollar goes to organizations it has funded before.
$1.7M · 52 repeat orgs$277k to everyone else

Grantees it renews have grown median revenue +17% since the first grant, against +6% for those funded once.

52 repeat relationships: 33 still active in FY2025, 19 since wound down; 20 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

52
26

Total granted

$1.7M
$95k

Median revenue growth · since first grant

+17%
+6%

Still filing today

56%
35%

New vs renewed · share of each year

In FY2025, 87% of grant dollars renewed an existing relationship; $182k went to new ones.

50%100%’22’23’24’25
RenewedFirst-time

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

’22’23’24’25
Arts & CultureEducationRecreation & SportsHealthEnvironmentAnimalsOther
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

  • SS
    SALISBURY SCHOOL INC
    4× · 2022–2025 · $289k · revenue +35%
  • MS
    Marsh Sanctuary Inc
    2× · 2023–2025 · $204k · revenue +30%
  • CP
    CENTRAL PARK CONSERVANCY INC
    3× · 2022–2025 · $164k · revenue +17%

Funded once

  • BT
    BALLET THEATRE FOUNDATION INC
    one grant, 2024 · $30k · revenue 0%
  • RAVINIA FESTIVAL ASSOCIATIONgraduated
    one grant, 2022 · $15k · revenue +79%
  • MCCARTER THEATRE COMPANY
    one grant, 2024 · $8k · revenue +6%
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.

03Its 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
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
2
New York Botanical Garden

The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…

Environment
3
The Pierpont Morgan Library

The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.

Education
4
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.

—
5
Manhattanville University

To educate students to be ethical and socially responsible leaders in a global community.

Education
6
Bard College

Bard college seeks to provide a challenging academic program and a supportive environment that fosters a collaborative interchange of ideas in the classroom as well as ambition to achieve excellence.

Education
7
Manhattan School of Music

Manhattan school of music is deeply committed to excellence in education, performance, and creative activity; to the humanity of the school's environment; and to the cultural enrichment of the larger community. a premiere international…

Arts & Culture
8
University of New Haven

The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…

Education
9
New York University

Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.

Education
10
The Jewish Museum

The mission of the jewish museum is to collect, preserve, exhibit and interpret art and jewish culture. see schedule o for more information.

Arts & Culture
11
New York Hall of Science

Nysci's mission is to nurture generations of passionate learners, critical thinkers, and active citizens through design make play - an approach to learning and engagement that is deeply rooted in research on stem learning and guides the…

Arts & Culture
12
The Brooklyn Institute of Arts and Sciences

The mission of the brooklyn institute of arts and sciences, d/b/a brooklyn museum (the "museum") is to bring people together through art and experiences that inspire celebration, compassion, courage, and the will to act. (see schedule o).

Arts & Culture
How this is measured
The grantee most central to the portfolio’s shape is The Frederick Gunn School Inc; the most unlike its peers is Princeton Einstein Museum Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
03the grantee network

51 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. 51 of the 98 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)
6
Early backer (in before they grew)
50/51
Grantees still filing
30/51
Grew since first funded

Where the money sits, by cause and then by grantee

Marsh Sanctuary Inc: $204,000 · OtherMarsh Sanctuary IncIncarnation Camp: $110,000 · OtherIncarnation CampSingle Parent Resource Center: $100,000 · OtherSingle Parent Resource CenterThe Metropolitan Opera: $55,000 · OtherThe Metropolitan OperaAPSCA: $45,300 · OtherAPSCAS A V A Inc.: $45,000 · OtherS A V A Inc.BALLET THEATER FOUNDATION INC: $28,400 · Other+53 more: $156,742 · Other+53 moreSALISBURY SCHOOL INC: $289,000 · EducationSALISBURY SCHOOL INCAVON OLD FARMS SCHOOL INC: $85,000 · EducationAVON OLD FARMS SCHOOL INCWellesley College: $27,750 · EducationWellesley College+8 more: $55,200 · Education+8 moreMANHATTAN THEATRE CLUB INC: $126,750 · Arts & CultureMANHATTAN THE…BALLET THEATRE FOUNDATION INC: $30,000 · Arts & CultureBALLET THEATR…564 PARK AVENUE PRESERVATION FOUNDATION: $25,000 · Arts & Culture564 PARK AVEN…Capital Harmony Works Inc: $21,000 · Arts & CultureCapital Harmo…RAVINIA FESTIVAL ASSOCIATION: $15,000 · Arts & CultureRAVINIA FESTI…+8 more: $18,719 · Arts & Culture+8 moreCENTRAL PARK CONSERVANCY INC: $164,000 · Recreation & SportsCENTRAL PAR…Incarnation Center Inc: $10,000 · Recreation & Sports+4 more: $16,250 · Recreation & Sports+4 moreWORLD WILDLIFE FUND INC: $153,390 · EnvironmentWORLD WIL…FUND FOR PARK AVENUE NEW YORK INC: $5,500 · Environment+2 more: $3,345 · EnvironmentMIANUS RIVER GORGE INC: $101,500 · AnimalsTHE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $15,000 · AnimalsHEALTH ADVOCATES FOR OLDER PEOPLE INC: $17,960 · Human ServicesSINGLE PARENT RESOURCE CENTER INC: $5,000 · Human Services
Other$744,442Education$456,950Arts & Culture$236,469Recreation & Sports$190,250Environment$162,235Animals$116,500Human Services$22,960

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 budgetSALISBURY SCHOOL INC: $289,000 over 4y, 0.6% of budgetMarsh Sanctuary Inc: $204,000 over 2y, 3.4% of budgetCENTRAL PARK CONSERVANCY INC: $164,000 over 3y, 0.1% of budgetWORLD WILDLIFE FUND INC: $153,390 over 2y, 0.0% of budgetMANHATTAN THEATRE CLUB INC: $126,750 over 4y, 0.3% of budgetMIANUS RIVER GORGE INC: $101,500 over 2y, 2.2% of budgetAVON OLD FARMS SCHOOL INC: $85,000 over 4y, 0.1% of budgetBALLET THEATRE FOUNDATION INC: $30,000 over 1y, 0.1% of budgetWellesley College: $27,750 over 3y, 0.0% of budgetCapital Harmony Works Inc: $21,000 over 2y, 0.9% of budgetHEALTH ADVOCATES FOR OLDER PEOPLE INC: $17,960 over 2y, 0.2% of budgetRAVINIA FESTIVAL ASSOCIATION: $15,000 over 1y, 0.0% of budgetUNIVERSITY SCHOOL: $14,000 over 3y, 0.0% of budgetThe Trustees of Princeton University: $11,750 over 4y, 0.0% of budgetIncarnation Center Inc: $10,000 over 1y, 0.2% of budgetINDIAN MOUNTAIN SCHOOL INC: $9,000 over 4y, 0.0% of budgetMCCARTER THEATRE COMPANY: $7,500 over 1y, 0.1% of budgetNORTHERN WESTCHESTER HOSPITAL ASSOCIATION: $6,250 over 2y, 0.0% of budgetTHE WINDWARD SCHOOL: $5,950 over 3y, 0.0% of budgetLEHIGH UNIVERSITY: $5,900 over 4y, 0.0% of budgetFOUNDATION FOR FREE FLIGHT: $5,750 over 2y, 3.3% of budgetFUND FOR PARK AVENUE NEW YORK INC: $5,500 over 4y, 0.2% of budgetSINGLE PARENT RESOURCE CENTER INC: $5,000 over 1y, 0.6% of budgetTHE FREDERICK GUNN SCHOOL INC: $5,000 over 3y, 0.0% of budgetWHITNEY MUSEUM OF AMERICAN ART: $4,776 over 4y, 0.0% of budgetTHE BALDWIN SCHOOL: $3,000 over 2y, 0.0% of budgetHonorable Order of Kentucky Colonels Inc: $2,500 over 3y, 0.0% of budgetAmerican Heart Association Inc: $2,500 over 3y, 0.0% of budgetTHE ALLEN-STEVENSON SCHOOL: $2,200 over 4y, 0.0% of budgetMuseum of Modern Art: $2,158 over 4y, 0.0% of budgetCITY GARDENS CLUB OF NEW YORK CITY: $1,805 over 2y, 0.1% of budgetWestchester Land Trust Inc: $1,540 over 3y, 0.0% of budgetMETROPOLITAN MUSEUM OF ART: $1,310 over 2y, 0.0% of budgetKATONAH-BEDFORD HILLS VOLUNTEER AMBULANCE CORP: $1,000 over 1y, 0.3% of budgetCONSUMER REPORTS INC: $1,000 over 1y, 0.0% of budgetPRINCETON EINSTEIN MUSEUM INC: $1,000 over 1y, 1.4% of budgetCORNER HOUSE FOUNDATION: $1,000 over 1y, 0.4% of budgetAmerican Museum of Natural History: $825 over 3y, 0.0% of budgetNEW YORK VETERAN POLICE ASSOCIATION INC: $600 over 1y, 0.1% of budgetTHE BUCKLEY SCHOOL: $500 over 1y, 0.0% of budgetSOUND BEACH VOLUNTEER SERVICES FOUNDATION INC: $450 over 1y, 0.2% of budgetSMITHSONIAN INSTITUTION: $150 over 1y, 0.0% of budgetNEW YORK POLICE CHIEFS' FOUNDATION INC: $100 over 1y, 0.1% 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.

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.

Chubb Charitable Foun…The New York Communit…The Goldman Sachs Cha…The Robert Wood Johns…Ibm International Fou…Gs Donor Advised Phil…Jewish Communal FundMorgan Stanley Global…National Philanthropi…Vanguard Charitable E…The Blackbaud Giving …Jpmorgan Chase Founda…
Chubb Charitable FoundationPA14.4× affinity6 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Chubb Charitable Foundation · The New York Community Trust · The Goldman Sachs Charitable Gift Fund · The Robert Wood Johnson Foundation · Ibm International Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Jewish Communal Fund · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · Vanguard Charitable Endowment Program · The Blackbaud Giving Fund · Jpmorgan Chase Foundation

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.
04Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to The Deane A and John D Gilliam Foundation?

Find your warmest path to The Deane A and John D Gilliam Foundation 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 98 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

Play a game based on Deane A and John D Gilliam’s filings →

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home