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James H Clark Charitable Foundation at a glance

· Private foundation

James H Clark Charitable 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.

$1.0M
Granted FY2025still arriving
1
Grants FY2025still arriving
1
States reached
$1.0M
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2021 to 2025.

Education$14MReligion$3.0MRecreation & Sports$1.6MEnvironment$1.5MArts & Culture$1.3MScience & Tech$250kAnimals$100k
02FY2025 · 1 grant

Where the money goes

Grants by size, and the largest recipients.

$1,000,000
Median grant
1
States reached
$8.7M
Total assets
Largest grants
RecipientAmount
NEW YORK PRESBYTERIAN$1,000,000
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:

Dollar for dollar, its grants (FY21–25) land where the poverty rate runs at 11%, against an area that typically sits at 8%. 46% of its dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.

area typical 8%MARTHA'S VINEYARD PRESERVATION TRUST INC: $100k → 8%STANFORD UNIVERSITY: $10.0M → 8%OCEANIC PRESERVATION SOCIETY: $1.5M → 8%RIPPOWAM CISQUA SCHOOL: $1.1M → 9%VLADIMIR AND HAEWON FELTSMAN PIANO FOUNDATION: $100k → 16%NEW YORK PRESBYTERIAN: $1.0M → 17%NATIONAL ACADEMIES OF SCIENCE ENGINEERING AND MEDICINE: $200k → 14%US OLYMPIC & PARALYMPIC FOUNDATION: $375k → 9%MARTHA'S VINEYARD PRESERVATION TRUST INC: $100k → 8%COMPUTER HISTORY MUSEUM: $50k → 8%RIPPOWAM CISQUA SCHOOL: $100k → 9%NEW YORK PRESBYTERIAN: $1.0M → 17%US OLYMPIC & PARALYMPIC FOUNDATION: $375k → 9%RIPPOWAM CISQUA SCHOOL: $100k → 9%NEW YORK PRESBYTERIAN: $750k → 17%US OLYMPIC & PARAOLYMPIC FOUNDATION: $375k → 9%NEW YORK PRESBYTERIAN: $250k → 17%US OLYMPIC & PARALYMPIC FOUNDATION: $375k → 9%THE CHAPIN SCHOOL: $1.3M → 17%THE CHAPIN SCHOOL: $1.0M → 17%THE PERLMAN MUSIC PROGRAM: $1.0M → 17%THE CHAPIN SCHOOL: $100k → 17%THE ANIMAL MEDICAL CENTER: $50k → 17%NEW YORK YACHT CLUB: $50k → 17%NEW YORK YACHT CLUB: $50k → 17%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.
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.

71%of every dollar goes to organizations it has funded before.
$8.1M · 6 repeat orgs$3.3M to everyone else

Grantees it renews have grown median revenue +24% since the first grant, against +24% for those funded once.

6 repeat relationships: 1 still active in FY2025, 5 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

6
8

Total granted

$8.1M
$3.3M

Median revenue growth · since first grant

+24%
+24%

Still filing today

83%
88%

New vs renewed · share of each year

In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

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

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

’21’22’23’24’25
Arts & CultureEducationAnimalsRecreation & SportsEnvironmentScience & TechOther
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

  • TC
    THE CHAPIN SCHOOL LTD
    3× · 2021–2023 · $2.4M · revenue +18%
  • TR
    The Rippowam Cisqua School Inc
    3× · 2022–2024 · $1.3M · revenue +6%
  • US
    UNITED STATES OLYMPIC AND PARALYMPIC FOUNDATION
    3× · 2022–2024 · $1.1M · revenue +58%

Funded once

  • OP
    Oceanic Preservation Societygraduated
    one grant, 2021 · $1.5M · revenue +95% · 93% of their budget
  • TP
    THE PERLMAN MUSIC PROGRAM INCgraduated
    one grant, 2021 · $1.0M · revenue +147%
  • UO
    US OLYMPIC & PARAOLYMPIC FOUNDATION
    one grant, 2021 · $375k
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
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
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
3
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
4
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
5
President and Fellows of Harvard College

Undergraduate, graduate, and professional education and research across a broad array of academic domains.

Education
6
United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

—
7
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
8
Stony Brook Ophthalmology University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
9
Stony Brook Surgical Associates University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
10
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
11
Stony Brook Internists University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
12
Neurology Associates of Stony Brook University Faculty Practice Corp

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
How this is measured
The grantee most central to the portfolio’s shape is The Chapin School Ltd; the most unlike its peers is Computer History Museum. 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

13 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. 13 of the 15 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.

2
Load-bearing (≥25% of a budget)
2
Early backer (in before they grew)
13/13
Grantees still filing
10/13
Grew since first funded

Where the money sits, by cause and then by grantee

THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $10,000,000 · EducationTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITYTHE CHAPIN SCHOOL LTD: $2,350,000 · EducationTHE CHAPIN SCHOOL LTDThe Rippowam Cisqua School Inc: $1,300,000 · EducationThe Rippowam Cisqua School IncNEW YORK PRESBYTERIAN: $3,000,000 · OtherNEW YORK PRESBYTER…US OLYMPIC & PARAOLYMPIC FOUNDATION: $375,000 · OtherUS OLYMPIC & PARAO…+1 more: $100,000 · OtherOceanic Preservation Society: $1,500,000 · EnvironmentTHE PERLMAN MUSIC PROGRAM INC: $1,000,000 · Arts & CultureMARTHA'S VINEYARD PRESERVATION TRUST INC: $200,000 · Arts & CultureVLADIMIR AND HAEWON FELTSMAN PIANO VLADIMIR & HAEWON FELTSMAN PIANO FO: $100,000 · Arts & CultureCOMPUTER HISTORY MUSEUM: $50,000 · Arts & CultureUNITED STATES OLYMPIC AND PARALYMPIC FOUNDATION: $1,125,000 · Recreation & SportsNATIONAL ACADEMY OF SCIENCES: $200,000 · Science & TechDANNY & RONS RESCUE: $50,000 · AnimalsTHE ANIMAL MEDICAL CENTER: $50,000 · Animals
Education$13,650,000Other$3,475,000Environment$1,500,000Arts & Culture$1,350,000Recreation & Sports$1,125,000Science & Tech$200,000Animals$100,000

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $10,000,000 over 1y, 0.1% of budgetTHE CHAPIN SCHOOL LTD: $2,350,000 over 3y, 2.1% of budgetOceanic Preservation Society: $1,500,000 over 1y, 93% of budgetThe Rippowam Cisqua School Inc: $1,300,000 over 3y, 3.7% of budgetUNITED STATES OLYMPIC AND PARALYMPIC FOUNDATION: $1,125,000 over 3y, 0.9% of budgetTHE PERLMAN MUSIC PROGRAM INC: $1,000,000 over 1y, 23% of budgetMARTHA'S VINEYARD PRESERVATION TRUST INC: $200,000 over 2y, 2.3% of budgetNATIONAL ACADEMY OF SCIENCES: $200,000 over 1y, 0.1% of budgetVLADIMIR AND HAEWON FELTSMAN PIANO VLADIMIR & HAEWON FELTSMAN PIANO FO: $100,000 over 1y, 37% of budgetTHE NEW YORK YACHT CLUB: $100,000 over 2y, 0.2% of budgetDANNY & RONS RESCUE: $50,000 over 1y, 1.6% of budgetCOMPUTER HISTORY MUSEUM: $50,000 over 1y, 0.5% of budgetTHE ANIMAL MEDICAL CENTER: $50,000 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.

Gs Donor Advised Phil…American Endowment Fo…National Philanthropi…Vanguard Charitable E…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
Gs Donor Advised Philanthropy FundNY12× affinity4 shared granteesties to 6 of 6Hover any node to trace its alignments.Compare side by side →

Open a dossier: Gs Donor Advised Philanthropy Fund · American Endowment Foundation · National Philanthropic Trust · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile 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.

How much its grantees rely on government

Each dot is one organization James H Clark Charitable Foundation funds: left to right is the share of its income from government, bottom to top the share from James H Clark Charitable Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%6%25%56%100%funder's share of their income ↑0%19%38%56%75%share of the org’s income from government →median 4%
  • Martha's Vineyard Preservation Trust Inc: 4% of income from government
no gov moneyreceives it· size = income
0get no government money at all
2report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–75%
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 James H Clark Charitable Foundation?

Find your warmest path to James H Clark Charitable 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 15 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 James H Clark’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