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Prospect Hill Foundation Inc at a glance

· Private foundation

Prospect Hill 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.

$2.6M
Granted FY2025still arriving
346
Grants FY2025still arriving
29
States reached
$75k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0199% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2025.

Environment$4.1MArts & Culture$3.6MInternational$2.0MCrime & Legal$1.7MCivil Rights$1.6MEducation$1.4MYouth Development$1.1MRecreation & Sports$766kOther$0
02FY2025 · 346 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k250 grants · $383k
  • $10k–50k87 grants · $1.7M
  • $50k–250k9 grants · $555k
$1,000
Median grant
29
States reached
$78M
Total assets
Largest grants
RecipientAmount
OUTRIDER FOUNDATION$75,000
CENTER FOR ARMS CONTROL AND NON-PROLIFERATION$75,000
THE TRUSTEES OF RESERVATIONS$75,000
ARMS CONTROL ASSOCIATION$75,000
DANA HALL SCHOOL$55,000
BALLET HISPANICO OF NEW YORK$50,000
THE KEEWAYDIN FOUNDATION$50,000
PROSPECT PARK ALLIANCE$50,000
GLOBAL GREENGRANTS FUND$50,000
LEGACY PHILANTHROPY WORKS$45,000
FEDERATION OF AMERICAN SCIENTISTS$35,000
OUTRIDER FOUNDATION$35,000
UNION OF CONCERNED SCIENTISTS$35,000
BROOKLYN COMMUNITY FOUNDATION$33,500
WORLD RESOURCES INSTITUTE$30,000
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 (FY19–25, $758k) land where the poverty rate runs at 18%, against an area that typically sits at 10%. 95% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%LA PLAZITA INSTITUTE: $35k → 14%LA PLAZITA INSTITUTE: $25k → 14%LA PLAZITA INSTITUTE: $15k → 14%LA PLAZITA INSTITUTE: $10k → 14%YOUNG CENTER FOR IMMIGRANT CHILDREN'S RIGHTS: $30k → 14%REAL DADS NETWORK: $5k → 9%LA PLAZITA INSTITUTE: $6k → 14%COMMONWEAL: $6k → 8%MONOMOY COMMUNITY SERVICES: $5k → 8%COMMONWEAL: $5k → 8%ON THE RISE: $5k → 8%COMMONWEAL: $4k → 8%COMMONWEAL: $4k → 8%ON THE RISE: $2k → 8%COMMONWEAL: $2k → 8%NEW YORK STATE YOUTH LEADERSHIP COUNCIL: $25k → 17%NEW YORK STATE YOUTH LEADERSHIP COUNCIL: $25k → 17%NEW YORK STATE YOUTH LEADERSHIP COUNCIL: $25k → 17%CROSSROADS RHODE ISLAND: $25k → 14%THE WOMEN'S FUND OF RHODE ISLAND: $13k → 14%THE WOMEN'S FUND OF RHODE ISLAND: $10k → 14%NEW YORK STATE YOUTH LEADERSHIP COUNCIL: $25k → 17%NEW YORK STATE YOUTH LEADERSHIP COUNCIL: $25k → 17%CROSSROADS RHODE ISLAND: $2k → 14%WARM INC: $10k → 17%WOMEN'S FUND OF RHODE ISLAND: $13k → 14%THE WOMEN'S FUND OF RHODE ISLAND: $10k → 14%JUSTICE FOR FAMILIES: $40k → 28%JUSTICE FOR FAMILIES: $25k → 28%THE WOMEN'S FUND OF RHODE ISLAND: $7k → 14%JUSTICE FOR FAMILIES: $25k → 28%WOMEN'S FUND OF RHODE ISLAND: $5k → 14%JUSTICE FOR FAMILIES: $25k → 28%JUSTICE FOR FAMILIES: $25k → 28%MEKONG INC: $3k → 28%THE ALEX HOUSE PROJECT: $25k → 20%THE ALEX HOUSE PROJECT: $25k → 20%THE ALEX HOUSE PROJECT: $25k → 20%THE ALEX HOUSE PROJECT: $25k → 20%THE NEW YORK WOMEN'S FOUNDATION: $20k → 17%THE NEW YORK WOMEN'S FOUNDATION: $20k → 17%THE NEW YORK WOMEN'S FOUNDATION: $20k → 17%THE NEW YORK WOMEN'S FOUNDATION: $20k → 17%THE NEW YORK WOMEN'S FOUNDATION: $10k → 17%THE NEW YORK WOMEN'S FOUNDATION: $5k → 17%THE NEW YORK WOMEN'S FOUNDATION: $4k → 17%THE NEW YORK WOMEN'S FOUNDATION: $1k → 17%NEW YORK STATE YOUTH LEADERSHIP COUNCIL: $25k → 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.

Which US states its grants reach

ME
VT
NH
WA
MN
IL
WI
MI
NY
MA
NV
IA
IN
OH
PA
NJ
CT
RI
CA
UT
CO
KY
VA
MD
AZ
NM
AR
TN
NC
SC
DC
HI
LA
AL
GA
TX
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.
04

Where the work is directed

The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.

About 5% of Prospect Hill Foundation Inc’s grant dollars are earmarked for a different county than the recipient’s own address.

Prospect Hill Foundation Inclessmore of its giving
Placed by recipient address · 2.9% directed abroad (not shown)
How this is measured
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the funder’s own 990 grant descriptions.
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.
$17M · 305 repeat orgs$1.5M to everyone else

Grantees it renews have grown median revenue +28% since the first grant, against +7% for those funded once.

305 repeat relationships: 169 still active in FY2025, 136 since wound down; 46 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

305
265

Total granted

$17M
$1.2M

Median revenue growth · since first grant

+28%
+7%

Still filing today

80%
62%

New vs renewed · share of each year

In FY2025, 89% of grant dollars renewed an existing relationship; $267k went to new ones.

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

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

’19’20’21’22’23’24’25
Arts & CultureEnvironmentEducationHealthInternationalHuman ServicesOther
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

  • EY
    EXALT YOUTH
    7× · 2019–2025 · $702k · revenue +69%
  • NATURAL RESOURCES DEFENSE COUNCIL INC
    5× · 2019–2023 · $375k · revenue +37%
  • TP
    THE PHILHARMONIC SYMPHONY SOCIETY OF NY INC
    7× · 2019–2025 · $321k · revenue +32%

Funded once

  • VO
    VIRGINIA ORGANIZING INC
    one grant, 2022 · $250k · revenue -20%
  • TC
    THE COMPACT OF CAPE COD CONSERVATION TRUSTS INC
    one grant, 2020 · $125k · revenue -75%
  • YU
    YALE UNIVERSITY (GRANTEE)
    one grant, 2019 · $51k
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
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.

—
2
New York Restoration Project

New york restoration project ("nyrp") believes that nature is a fundamental right of every new yorker. nyrp works collaboratively with residents in communities across the five boroughs to renovate gardens, restore parks, plant trees,…

Environment
3
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
4
Public Media Nj Inc

To bring quality public television programs and resources to communities throughout new jersey and its tri-state neighbors. its content, both on-air and online, aims to reflect the diverse

Arts & Culture
5
City Report Inc

CITY REPORT, INC. serves the people of New York through independent journalism that answers their information needs and holds the powerful to account.

Arts & Culture
6
Boston Architectural College

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

—
7
New York School of Interior Design

New york school of interior design provides the most innovative, immersive, and transformative interior design education in the world, demonstrating the impact of professionally designed interiors on the health, happiness, and well-being…

Education
8
Manhattanville University

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

Education
9
New York League of Conservation Voters

See schedule onylcv is a non-partisan policy making and political action organization that works to make environmental protection a top priority with elected officials, decision-makers and the voters by evaluating incumbent performance and…

—
10
Asociacion Interamericana Para La Defensa Del Ambiente

To strenghten people's ability to guarantee their individual and collective right to a healthy environment, via the development, implementation, and effective enforcement of national and international law.

Crime & Legal
11
Native Plant Trust Inc

The organization's mission is to conserve and promote new england's native plants to ensure healthy, biologically diverse landscapes.

Environment
12
The Architectural League of New York

The architectural league of new york supports critically transformative work in the allied fields that shape the built environment. as a vital, independent forum, the league stimulates thinking, debate, and action on today's (continued on…

—
How this is measured
The grantee most central to the portfolio’s shape is Riverdale Neighborhood House Inc; the most unlike its peers is Amsterdam News Educational Foundation Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
05the grantee network

474 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. 474 of the 632 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.

3
Load-bearing (≥25% of a budget)
83
Early backer (in before they grew)
463/474
Grantees still filing
299/474
Grew since first funded

Where the money sits, by cause and then by grantee

THE PHILHARMONIC SYMPHONY SOCIETY OF NY INC: $320,527 · Arts & CultureTHE PHILHARMONIC S…VOICES OF ASCENSION INC: $318,623 · Arts & CultureVOICES OF ASCENSIO…SOCIETY OF THE THIRD STREET MUSIC SCHOOL SETTLEMENT: $233,185 · Arts & CultureSOCIETY OF THE THI…THE VIVIAN BEAUMONT THEATERINC D/B/A LINCOLN CENTER THEATER: $227,800 · Arts & CultureTHE VIVIAN BEAUMON…METROPOLITAN MUSEUM OF ART: $176,220 · Arts & CultureMETROPOLITAN MUSEU…NEW YORK CITY BALLET INC: $170,000 · Arts & CultureNEW YORK CITY BALL…JACOB'S PILLOW DANCE FESTIVAL INC: $164,000 · Arts & CultureJACOB'S PILLOW DAN…BALLET HISPANICO OF NEW YORK INC: $156,900 · Arts & CultureIndependent Arts & Media: $144,535 · Arts & CultureCOMMUNITY MUSICWORKS: $142,400 · Arts & CultureMYSTIC SEAPORT MUSEUM INC: $100,000 · Arts & Culture+24 more: $827,869 · Arts & Culture+24 moreTHE KEEWAYDIN FOUNDATION: $294,170 · OtherThe Center For Nuleadership On Urban Solutions Inc: $283,545 · OtherVIRGINIA ORGANIZING INC: $250,000 · OtherNATIONAL LATINA INSTITUTE FOR REPRODUCTIVE JUSTICE: $240,000 · Other+89 more: $5,895,519 · Other+89 moreNATURAL RESOURCES DEFENSE COUNCIL INC: $375,200 · EnvironmentNATURAL RESOURCES…GLOBAL GREENGRANTS FUND: $317,975 · EnvironmentGLOBAL GREENGRANT…SAVE THE BAY INC: $271,531 · EnvironmentSAVE THE BAY INCOutrider Foundation Inc: $260,000 · EnvironmentOutrider Foundati…WAVE HILL INCORPORATED: $213,380 · EnvironmentWAVE HILL INCORPO…BRONX RIVER ALLIANCE INC: $182,831 · EnvironmentBRONX RIVER ALLIA…NORTHERN FOREST ATLAS FOUNDATION INC: $157,500 · EnvironmentNORTHERN FOREST A…THE TRUSTEES OF RESERVATIONS: $150,000 · EnvironmentTHE COMPACT OF CAPE COD CONSERVATION TRUSTS INC: $125,000 · EnvironmentBK ROT INC: $123,425 · EnvironmentCLEAN AND HEALTHY NEW YORK: $114,086 · Environment+17 more: $614,541 · Environment+17 moreThe Arms Control Associations: $662,552 · InternationalThe Arms Contro…Center for Arms Control and: $395,000 · InternationalCenter for Arms…WORLD RESOURCES INSTITUTE: $310,000 · InternationalWORLD RESOURCES…FEDERATION OF AMERICAN SCIENTISTS: $225,000 · InternationalFEDERATION OF A…THE UNION OF CONCERNED SCIENTISTS INC: $205,000 · InternationalTHE UNION OF CO…CARNEGIE ENDOWMENT FOR INTERNATIONAL PEACE: $150,000 · InternationalCARNEGIE ENDOWM…GLOBAL ZERO: $104,500 · InternationalInkstick Media Inc: $100,000 · InternationalNUCLEAR AGE PEACE FOUNDATION: $85,400 · International+5 more: $239,300 · International+5 moreEXALT YOUTH: $702,411 · Youth DevelopmentDEAR BLACK GIRL INCORPORATED: $192,450 · Youth DevelopmentYOUNG VOICES: $138,250 · Youth DevelopmentHow Our Lives Link Altogether Inc: $128,350 · Youth DevelopmentPROVIDENCE YOUTH STUDENT MOVEMENT: $100,400 · Youth Development+2 more: $55,200 · Youth DevelopmentTHE COLORADO COLLEGE: $296,100 · EducationSOCIAL GOOD FUND INC: $206,449 · EducationDANA HALL SCHOOL: $138,600 · EducationDWIGHT HALL AT YALE: $77,450 · EducationCOMMUNITY PREPARATORY SCHOOL: $50,668 · EducationETHICAL CULTURE FIELDSTON SCHOOL: $47,500 · EducationResearch Foundation of the City University of New York: $40,000 · EducationPEACE ACTION FUND OF NEW YORK STATE INC: $40,000 · Education+8 more: $168,850 · EducationGroundswell Fund: $275,000 · PhilanthropyRUBIN MUSEUM OF ART AKA THE SHELLEY & DONALD RUBIN CULTURAL TRUST: $180,475 · PhilanthropyADIRONDACK FOUNDATION: $138,005 · PhilanthropyPLAYERS PHILANTHROPY FUND INC: $102,435 · PhilanthropyBROOKLYN COMMUNITY FOUNDATION: $38,500 · Philanthropy+2 more: $45,000 · Philanthropy
Arts & Culture$2,982,059Other$6,963,234Environment$2,905,469International$2,476,752Youth Development$1,317,061Education$1,065,617Philanthropy$779,415

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 budgetEXALT YOUTH: $702,411 over 7y, 7.1% of budgetThe Arms Control Associations: $662,552 over 7y, 8.2% of budgetCenter for Arms Control and: $395,000 over 7y, 9.7% of budgetNATURAL RESOURCES DEFENSE COUNCIL INC: $375,200 over 5y, 0.1% of budgetTHE PHILHARMONIC SYMPHONY SOCIETY OF NY INC: $320,527 over 7y, 0.1% of budgetVOICES OF ASCENSION INC: $318,623 over 7y, 6.2% of budgetGLOBAL GREENGRANTS FUND: $317,975 over 7y, 0.4% of budgetWORLD RESOURCES INSTITUTE: $310,000 over 7y, 0.0% of budgetTHE COLORADO COLLEGE: $296,100 over 4y, 0.1% of budgetTHE KEEWAYDIN FOUNDATION: $294,170 over 7y, 0.8% of budgetThe Center For Nuleadership On Urban Solutions Inc: $283,545 over 7y, 5.1% of budgetGroundswell Fund: $275,000 over 3y, 0.8% of budgetSAVE THE BAY INC: $271,531 over 5y, 2.4% of budgetOutrider Foundation Inc: $260,000 over 3y, 2.2% of budgetVIRGINIA ORGANIZING INC: $250,000 over 1y, 1.9% of budgetNATIONAL LATINA INSTITUTE FOR REPRODUCTIVE JUSTICE: $240,000 over 3y, 2.2% of budgetSOCIETY OF THE THIRD STREET MUSIC SCHOOL SETTLEMENT: $233,185 over 7y, 0.4% of budgetTHE VIVIAN BEAUMONT THEATERINC D/B/A LINCOLN CENTER THEATER: $227,800 over 7y, 0.2% of budgetFEDERATION OF AMERICAN SCIENTISTS: $225,000 over 7y, 1.1% of budgetWAVE HILL INCORPORATED: $213,380 over 7y, 0.7% of budgetSOCIAL GOOD FUND INC: $206,449 over 7y, 0.1% of budgetTHE NATURE CONSERVANCY: $205,000 over 7y, 0.0% of budgetTHE UNION OF CONCERNED SCIENTISTS INC: $205,000 over 6y, 0.1% of budgetDEAR BLACK GIRL INCORPORATED: $192,450 over 5y, 32% of budgetPROJECT SOUTH INC: $191,953 over 6y, 0.6% of budgetChinese for Affirmative Action: $185,405 over 5y, 0.3% of budgetWATERFRONT ALLIANCE INC: $185,000 over 5y, 5.0% of budgetBRONX RIVER ALLIANCE INC: $182,831 over 7y, 7.3% of budgetRUBIN MUSEUM OF ART AKA THE SHELLEY & DONALD RUBIN CULTURAL TRUST: $180,475 over 6y, 0.5% of budgetMETROPOLITAN MUSEUM OF ART: $176,220 over 7y, 0.0% of budgetCENTRAL PARK CONSERVANCY INC: $175,420 over 7y, 0.0% of budgetNEW YORK CITY BALLET INC: $170,000 over 5y, 0.1% of budgetPROSPECT PARK ALLIANCE INC: $164,160 over 7y, 0.3% of budgetJACOB'S PILLOW DANCE FESTIVAL INC: $164,000 over 7y, 0.3% of budgetLineage Project Inc: $162,400 over 6y, 16% of budgetNORTHERN FOREST ATLAS FOUNDATION INC: $157,500 over 7y, 24% of budgetBALLET HISPANICO OF NEW YORK INC: $156,900 over 7y, 0.6% of budgetNEW YORK STATE YOUTH LEADERSHIP COUNCIL INC: $153,450 over 6y, 9.9% of budgetFARM FRESH RHODE ISLAND INC: $150,850 over 5y, 0.9% of budgetTHE TRUSTEES OF RESERVATIONS: $150,000 over 2y, 0.1% of budgetCARNEGIE ENDOWMENT FOR INTERNATIONAL PEACE: $150,000 over 6y, 0.1% of budgetIndependent Arts & Media: $144,535 over 5y, 1.1% of budgetJUSTICE FOR FAMILIES LTD: $142,924 over 5y, 12% of budgetCOMMUNITY MUSICWORKS: $142,400 over 6y, 1.3% of budgetDANA HALL SCHOOL: $138,600 over 4y, 0.2% of budgetYOUNG VOICES: $138,250 over 4y, 8.0% of budgetADIRONDACK FOUNDATION: $138,005 over 5y, 0.3% of budgetYOUTH REPRESENT INC: $135,955 over 4y, 3.7% 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 EXALT YOUTH ↗
  • Who funds The Arms Control Associations ↗
  • Who funds Center for Arms Control and ↗
  • Who funds NATURAL RESOURCES DEFENSE COUNCIL INC ↗
  • Who funds THE PHILHARMONIC SYMPHONY SOCIETY OF NY INC ↗
  • Who funds VOICES OF ASCENSION INC ↗
  • Who funds GLOBAL GREENGRANTS FUND ↗
  • Who funds WORLD RESOURCES INSTITUTE ↗
  • Who funds THE COLORADO COLLEGE ↗
  • Who funds THE KEEWAYDIN FOUNDATION ↗
  • Who funds The Center For Nuleadership On Urban Solutions Inc ↗
  • Who funds Groundswell Fund ↗
  • Who funds SAVE THE BAY INC ↗
  • Who funds Outrider Foundation Inc ↗
  • Who funds VIRGINIA ORGANIZING INC ↗
  • Who funds NATIONAL LATINA INSTITUTE FOR REPRODUCTIVE JUSTICE ↗
  • Who funds SOCIETY OF THE THIRD STREET MUSIC SCHOOL SETTLEMENT ↗
  • Who funds THE VIVIAN BEAUMONT THEATERINC D/B/A LINCOLN CENTER THEATER ↗
  • Who funds FEDERATION OF AMERICAN SCIENTISTS ↗
  • Who funds WAVE HILL INCORPORATED ↗
  • Who funds SOCIAL GOOD FUND INC ↗
  • Who funds THE NATURE CONSERVANCY ↗
  • Who funds THE UNION OF CONCERNED SCIENTISTS INC ↗
  • Who funds DEAR BLACK GIRL INCORPORATED ↗
  • Who funds PROJECT SOUTH INC ↗
  • Who funds Chinese for Affirmative Action ↗
  • Who funds WATERFRONT ALLIANCE INC ↗
  • Who funds BRONX RIVER ALLIANCE INC ↗
  • Who funds RUBIN MUSEUM OF ART AKA THE SHELLEY & DONALD RUBIN CULTURAL TRUST ↗
  • Who funds METROPOLITAN MUSEUM OF ART ↗
  • Who funds CENTRAL PARK CONSERVANCY INC ↗
  • Who funds NEW YORK CITY BALLET INC ↗
  • Who funds PROSPECT PARK ALLIANCE INC ↗
  • Who funds JACOB'S PILLOW DANCE FESTIVAL INC ↗
  • Who funds Lineage Project Inc ↗
  • Who funds NORTHERN FOREST ATLAS FOUNDATION INC ↗
  • Who funds BALLET HISPANICO OF NEW YORK INC ↗
  • Who funds NEW YORK STATE YOUTH LEADERSHIP COUNCIL INC ↗
  • Who funds FARM FRESH RHODE ISLAND INC ↗

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.

Pinkerton FoundationThe Scherman Foundati…New York Women's Foun…The New York Communit…Lily Auchincloss Foun…The Hyde and Watson F…Rockefeller Brothers …Foundation to Promote…Brooklyn Community Fo…The Howard Gilman Fou…The Ford FoundationSurdna Foundation Inc
Pinkerton FoundationNY56.6× affinity31 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Pinkerton Foundation · The Scherman Foundation Inc · New York Women's Foundation Inc · The New York Community Trust · Lily Auchincloss Foundation Inc · The Hyde and Watson Foundation · Rockefeller Brothers Fund Inc · Foundation to Promote Open Society · Brooklyn Community Foundation · The Howard Gilman Foundation Inc · The Ford Foundation · Surdna Foundation Inc

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 Prospect Hill Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Prospect Hill Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 180%6%25%56%100%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 5%
  • On the Rise Inc: 39% of income from government
  • Buzzards Bay Coalition: 37% of income from government
  • Save the Sound: 37% of income from government
  • The Petey Greene Program Inc: 29% of income from government
  • Trustees of Boston University: 12% of income from government
  • Planned Parenthood of Southern New England Inc: 10% of income from government
  • Greenagers Inc: 7% of income from government
  • Cape Cod Commercial Fishermen's Alliance Inc: 5% of income from government
  • Mystic Seaport Museum Inc: 5% of income from government
  • White River Partnership Inc: 4% of income from government
  • Third Sector New England Inc: 3% of income from government
  • Orleans Conservation Trust: 2% of income from government
  • The Trustees of Reservations: 2% of income from government
  • Mahaiwe Performing Arts Center Inc: 2% of income from government
  • Berkshire Agricultural Ventures Inc: 1% of income from government
  • Fairfield University: 1% of income from government
  • Jacob's Pillow Dance Festival Inc: 1% of income from government
  • Pan-Massachusetts Challenge Inc: 0% of income from government
no gov moneyreceives it· size = income
18get no government money at all
44report 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 Prospect Hill Foundation Inc?

Find your warmest path to Prospect Hill 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 632 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.

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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