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· Private foundation

John Winthrop Charitable Trust

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.

$649k
Granted FY2025still arriving
39
Grants FY2025still arriving
9
States reached
$69k
Largest
01What it funds
0188% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Recreation & Sports$1.0MEducation$998kArts & Culture$348kPhilanthropy$268kSocial Science$159kHealth$142kHuman Services$138kEnvironment$95kOther$0
02FY2025 · 39 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k24 grants · $32k
  • $10k–50k8 grants · $186k
  • $50k–250k7 grants · $431k
$1,000
Median grant
9
States reached
$4.4M
Total assets
Largest grants
RecipientAmount
COASTAL COMMUNITY FOUNDATION$69,035
UNIVERSITY OF SC$68,173
DEXTER SOUTHFIELD SCHOOL$65,553
SALISBURY SCHOOL$65,000
CHARLESTON LIBRARY SOCIETY$60,000
A FATHER'S PLACE$53,022
CITADEL FOUNDATION$50,532
INDIAN MTN SCHOOL$43,313
AMERICAN COLLEGE OF THE BLDG ARTS$36,000
GILDER LEHRMAN INSTITUTE$35,959
TRIDENT UNITED WAY$20,000
MASSACHUSETTS HISTORICAL SOCIETY$15,000
COLLEGE OF CHARLESTON$12,774
WINDWOOD FAMILY SERVICES$11,500
EPIPHANY SCHOOL$11,000
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 (FY18–24, $4k) land where the poverty rate runs at 13%, against an area that typically sits at 10%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%PUPPIES BEHIND BARS: $500 → 17%PUPPIES BEHIND BARS: $500 → 17%CAROLINA YOUTH DEVELOPMENT CENTER: $1k → 12%CAROLINA YOUTH DEVELOPMENT CENTER: $500 → 12%DRAYTON HALL PERSERVATION FUND: $500 → 12%DRAYTON HALL PRESERVATION TRUST: $500 → 12%DRAYTON HALL PRESERVATION TRUST: $500 → 12%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

NH
WA
MN
IL
MI
NY
MA
SD
IN
PA
CT
CA
VA
MD
DE
AR
TN
NC
SC
DC
AL
GA
FL
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.

92%of every dollar goes to organizations it has funded before.
$3.3M · 133 repeat orgs$308k to everyone else

Grantees it renews have grown median revenue +40% since the first grant, against +36% for those funded once.

133 repeat relationships: 34 still active in FY2025, 99 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

133
92

Total granted

$3.3M
$302k

Median revenue growth · since first grant

+40%
+36%

Still filing today

52%
30%

New vs renewed · share of each year

In FY2025, 99% of grant dollars renewed an existing relationship; $6k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
EducationArts & CultureHealthEnvironmentAnimalsInternationalOther
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

  • AC
    AMERICAN COLLEGE OF THE BUILDING ARTS
    9× · 2017–2025 · $116k · revenue +133%
  • THE EPIPHANY SCHOOL INC
    9× · 2017–2025 · $114k · revenue +288%
  • WU
    Winthrop University Foundation
    7× · 2017–2024 · $108k · revenue +120%

Funded once

  • IG
    Individual grant recipient
    one grant, 2020 · $190k
  • FO
    FRIENDS OF PUBLIC GARDEN
    one grant, 2018 · $13k
  • IG
    Individual grant recipient
    one grant, 2019 · $11k
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
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
2
The South Carolina Historical Society

The schs mission is to expand, preserve, and make accessible our invaluable collection, and to encourage interest and pride in the rich history of our state.

Arts & Culture
3
Hampden-Sydney College

Since 1775, the mission of Hampden-Sydney College has been to form good men and good citizens in an atmosphere of sound learning.

Education
4
Rhode Island School of Design

The mission of rhode island school of design, through its college and museum,is to educate its students and the public in the creation and (see schedule o)appreciation of works of art and design, to discover and transmit knowledge and to…

Education
5
Harvard Conservation Trust

To preserve the unique character and natural resources of harvard.

Environment
6
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
7
Saint Anselm College

Saint anselm is a catholic, benedictine college providing all of its students a distinctive liberal arts education that incorporates opportunities for professional and career preparation. it does so in a learning community that encourages…

Education
8
Trustees of Dartmouth College

Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.

Education
9
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.

—
10
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
11
Furman University

The primary mission of furman as a liberal arts institution is to provide a distinctive education in fine arts, humanities, social sciences, mathematics and the sciences, as well as selected professional disciplines.

Education
12
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
How this is measured
The grantee most central to the portfolio’s shape is The Citadel Foundation; the most unlike its peers is The Order of Colonial Lords of Manors in America. 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

103 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. 103 of the 232 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.

1
Load-bearing (≥25% of a budget)
21
Early backer (in before they grew)
102/103
Grantees still filing
78/103
Grew since first funded

Where the money sits, by cause and then by grantee

CITY OF CHARLESTON: $1,024,000 · OtherCITY OF CHARLESTONIndividual grant recipient: $190,000 · OtherIndividual grant recipientGILDER LEHRMAN INSTITUTE: $141,459 · OtherGILDER LEHRMAN INSTITUTECOLLEGE OF CHARLESTON: $103,774 · Other+145 more: $985,936 · Other+145 moreAMERICAN COLLEGE OF THE BUILDING ARTS: $115,500 · EducationAMERICAN COLLEGE OF THE BU…THE EPIPHANY SCHOOL INC: $113,500 · EducationTHE EPIPHANY SCHOOL INCWinthrop University Foundation: $107,500 · EducationWinthrop University Founda…THE CITADEL FOUNDATION: $103,532 · EducationTHE CITADEL FOUNDATIONDEXTER SOUTHFIELD INC: $91,353 · EducationDEXTER SOUTHFIELD INCSALISBURY SCHOOL INC: $78,000 · EducationSALISBURY SCHOOL INCA Father's Place: $66,522 · EducationA Father's PlacePresident and Fellows of Harvard College: $47,700 · EducationINDIAN MOUNTAIN SCHOOL INC: $44,813 · EducationST MARK'S SCHOOL OF SOUTHBOROUGH INC: $32,700 · EducationUniversity of South Carolina Educational Foundation: $31,000 · Education+10 more: $62,338 · Education+10 moreTRIDENT UNITED WAY: $130,500 · PhilanthropyCOASTAL COMMUNITY FOUNDATION OF SOUTH CAROLINA INC: $123,750 · PhilanthropyWindwood Farm Home For Children Inc: $42,000 · HealthPRIORY IN THE USA OF THE MOST VENERABLE ORDER OF THE HOSP / ST JOHN OF JERUSALEM: $33,440 · HealthSALISBURY VOLUNTEER AMBULANCE SERV: $5,500 · Health+3 more: $3,637 · HealthMASSACHUSETTS HISTORICAL SOCIETY: $16,000 · Arts & CultureHenry L Ferguson Museum: $16,000 · Arts & CultureChildren's Museum of the Lowcountry: $14,875 · Arts & CultureETV Endowment of South Carolina Inc: $10,000 · Arts & CultureThe Martha and John M Rivers Performance Hall Foundation: $4,000 · Arts & CultureBrandywine Conservancy & Museum of Art: $3,500 · Arts & CultureHARVARD MAGAZINE INC: $3,250 · Arts & Culture+8 more: $10,380 · Arts & CultureTHE CONSERVATION FUND A NONPROFIT CORPORATION: $12,000 · EnvironmentThe Charleston Parks Conservancy: $10,000 · EnvironmentTHE LONGLEAF ALLIANCE INC: $6,952 · EnvironmentWORLD WILDLIFE FUND INC: $3,190 · EnvironmentAmerican Forests: $2,000 · EnvironmentFRIENDS OF THE PUBLIC GARDEN INC: $1,500 · EnvironmentAMERICAN INSTITUTE FOR ECONOMIC RESEARCH: $16,000 · Social Science
Other$2,445,169Education$894,458Philanthropy$254,250Health$84,577Arts & Culture$78,005Environment$35,642Social Science$16,000

Showing the 200 largest grantees by grant value.

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 budgetTRIDENT UNITED WAY: $130,500 over 9y, 0.5% of budgetCOASTAL COMMUNITY FOUNDATION OF SOUTH CAROLINA INC: $123,750 over 6y, 0.1% of budgetAMERICAN COLLEGE OF THE BUILDING ARTS: $115,500 over 9y, 0.9% of budgetTHE EPIPHANY SCHOOL INC: $113,500 over 9y, 0.4% of budgetWinthrop University Foundation: $107,500 over 7y, 0.7% of budgetTHE CITADEL FOUNDATION: $103,532 over 9y, 0.1% of budgetDEXTER SOUTHFIELD INC: $91,353 over 4y, 0.1% of budgetCharleston Library Society: $80,500 over 8y, 0.2% of budgetSALISBURY SCHOOL INC: $78,000 over 5y, 1.0% of budgetA Father's Place: $66,522 over 2y, 2.8% of budgetFATHER TO FATHER INC: $62,000 over 4y, 3.6% of budgetTHE COLONIAL SOCIETY OF MASSACHUSETTS AMORY L LORING TREASURER: $56,000 over 7y, 3.5% of budgetPresident and Fellows of Harvard College: $47,700 over 6y, 0.0% of budgetINDIAN MOUNTAIN SCHOOL INC: $44,813 over 4y, 0.2% of budgetWindwood Farm Home For Children Inc: $42,000 over 6y, 0.6% of budgetPRIORY IN THE USA OF THE MOST VENERABLE ORDER OF THE HOSP / ST JOHN OF JERUSALEM: $33,440 over 5y, 0.2% of budgetST MARK'S SCHOOL OF SOUTHBOROUGH INC: $32,700 over 3y, 0.1% of budgetUniversity of South Carolina Educational Foundation: $31,000 over 3y, 0.0% of budgetCHARLESTON DAY SCHOOLINC: $23,138 over 7y, 0.2% of budgetPALMETTO PROJECT INC: $17,500 over 4y, 0.9% of budgetMASSACHUSETTS HISTORICAL SOCIETY: $16,000 over 2y, 0.1% of budgetHenry L Ferguson Museum: $16,000 over 4y, 1.9% of budgetAMERICAN INSTITUTE FOR ECONOMIC RESEARCH: $16,000 over 9y, 0.2% of budgetChildren's Museum of the Lowcountry: $14,875 over 4y, 0.5% of budgetTHE CONSERVATION FUND A NONPROFIT CORPORATION: $12,000 over 2y, 0.0% of budgetSIERRA CLUB: $11,500 over 3y, 0.0% of budgetFRESH AIR FUND: $11,500 over 8y, 0.0% of budgetSEED GLOBAL HEALTH: $10,500 over 2y, 0.3% of budgetThe Charleston Parks Conservancy: $10,000 over 1y, 0.8% of budgetETV Endowment of South Carolina Inc: $10,000 over 7y, 0.1% of budgetCOLLEGE OF CHARLESTON FOUNDATION: $8,500 over 3y, 0.0% of budgetNATIONAL GEOGRAPHIC SOCIETY: $8,500 over 3y, 0.0% of budgetTHE LONGLEAF ALLIANCE INC: $6,952 over 8y, 0.0% of budgetCONFEDERATE HOME AND COLLEGE: $6,207 over 3y, 1.0% of budgetThe Preservation Society of Charleston Inc: $6,000 over 1y, 0.4% of budgetHISTORIC CHARLESTON FOUNDATION: $5,800 over 5y, 0.0% of budgetSALISBURY VOLUNTEER AMBULANCE SERV: $5,500 over 8y, 0.3% of budgetAVIAN CONSERVATION CENTER: $5,500 over 6y, 0.1% of budgetCHORUS NORTH SHORE: $5,000 over 1y, 5.0% of budgetTRUSTEES OF DEERFIELD ACADEMY: $4,000 over 5y, 0.0% of budgetThe Martha and John M Rivers Performance Hall Foundation: $4,000 over 3y, 0.1% of budgetASSOCIATION FOR THE BLIND AND VISUALLY IMPAIRED SOUTH CAROLINA: $4,000 over 4y, 0.2% of budgetROTARY CLUB OF CHARLESTON BREAKFAS: $3,900 over 4y, 2.1% of budgetFeeding America: $3,625 over 3y, 0.0% of budgetTHE HOTCHKISS SCHOOL: $3,500 over 5y, 0.0% of budgetBrandywine Conservancy & Museum of Art: $3,500 over 2y, 0.0% of budgetHARVARD MAGAZINE INC: $3,250 over 6y, 0.0% of budgetWORLD WILDLIFE FUND INC: $3,190 over 6y, 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 TRIDENT UNITED WAY ↗
  • Who funds COASTAL COMMUNITY FOUNDATION OF SOUTH CAROLINA INC ↗
  • Who funds AMERICAN COLLEGE OF THE BUILDING ARTS ↗
  • Who funds THE EPIPHANY SCHOOL INC ↗
  • Who funds Winthrop University Foundation ↗
  • Who funds THE CITADEL FOUNDATION ↗
  • Who funds DEXTER SOUTHFIELD INC ↗
  • Who funds Charleston Library Society ↗
  • Who funds SALISBURY SCHOOL INC ↗
  • Who funds A Father's Place ↗
  • Who funds FATHER TO FATHER INC ↗
  • Who funds THE COLONIAL SOCIETY OF MASSACHUSETTS AMORY L LORING TREASURER ↗
  • Who funds President and Fellows of Harvard College ↗
  • Who funds INDIAN MOUNTAIN SCHOOL INC ↗
  • Who funds Windwood Farm Home For Children Inc ↗
  • Who funds PRIORY IN THE USA OF THE MOST VENERABLE ORDER OF THE HOSP / ST JOHN OF JERUSALEM ↗
  • Who funds ST MARK'S SCHOOL OF SOUTHBOROUGH INC ↗
  • Who funds University of South Carolina Educational Foundation ↗
  • Who funds CHARLESTON DAY SCHOOLINC ↗
  • Who funds PALMETTO PROJECT INC ↗
  • Who funds MASSACHUSETTS HISTORICAL SOCIETY ↗
  • Who funds Henry L Ferguson Museum ↗
  • Who funds AMERICAN INSTITUTE FOR ECONOMIC RESEARCH ↗
  • Who funds Children's Museum of the Lowcountry ↗

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.

Coastal Community Foundation of South Carolina IncSC46.9× affinity22 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Coastal Community Foundation of South Carolina Inc · Post and Courier Foundation · Henry & Sylvia Yaschik Foundation Inc · The Joanna Foundation · John M Rivers Jr Foundation · Guffey Family Foundation · Dominion Energy Charitable Foundation · The Clyde and Summer Anderson Foundation · Magnolia Plantation Foundation · The Mark Elliott Motley Foundation Inc · Atlantic Services of Charleston Cha · Roy and Amanda Maybank Charitable 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 John Winthrop Charitable Trust funds: left to right is the share of its income from government, bottom to top the share from John Winthrop Charitable Trust. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 200%0%1%3%5%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 7%
  • Massachusetts Historical Society: 22% of income from government
  • Community Foundation for Nantucket Inc: 10% of income from government
  • President and Fellows of Harvard College: 7% of income from government
  • Paul Revere Memorial Association: 1% of income from government
  • Friends of the Public Garden Inc: 1% of income from government
  • The Epiphany School Inc: 0% of income from government
no gov moneyreceives it· size = income
20get no government money at all
20report 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 John Winthrop Charitable Trust?

Find your warmest path to John Winthrop Charitable Trust 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 232 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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