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· Private foundation

Frances B and J Ronald Terwilliger 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.

$365k
Granted FY2025still arriving
22
Grants FY2025still arriving
7
States reached
$250k
Largest
01What it funds
0191% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2024.

Animals$920kCommunity Improvement$130kYouth Development$102kInternational$64kEducation$40kEnvironment$39kCivil Rights$30kPublic Benefit$30kOther$0
02FY2025 · 22 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k15 grants · $37k
  • $10k–50k6 grants · $78k
  • $250k+1 grant · $250k
$3,000
Median grant
7
States reached
$19k
Total assets
Largest grants
RecipientAmount
PETA$250,000
NORTH SHORE LAND ALLIANCE$22,500
PRAGER UNIVERSITY FOUNDATION$15,000
FRIENDS OF THE ISRAELI DEFENCE FORCES$10,000
PASSAGES AMERICA ISRAEL INC$10,000
AMERICAN FRIENDS OF MAGEN DAVID ADOM$10,000
FRIENDS OF THE BAY$10,000
Individual grant recipient$5,000
EAST WOODS SCHOOL$5,000
PALM BEACH CIVIC ASSOCIATION$5,000
FLAME$3,000
CHRISTIANS UNITED FOR ISRAEL$3,000
OYSTER BAY MAIN STREET ASSOC$2,500
PINK AID INC$2,500
AMERICAN FRIENDS OF MEIR PANIM$2,500
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 (FY20–25) land where the poverty rate runs at 15%, against an area that typically sits at 10%. 79% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%FLAME: $3k → 10%PRAGER UNIVERSITY FOUNDATION: $15k → 14%LITTLE SHELTER ANIMAL RESCUE: $5k → 7%AMERICAN FRIENDS OF MAGEN DAVID ADOM: $10k → 17%PALM BEACH CIVIC ASSOCIATION: $10k → 11%ORCAT INC: $100k → 13%SAY DETROIT: $100k → 8%INT'L FELLOWSHIP OF CHRISTIAN & JEWS: $3k → 14%PASSAGES AMERICA ISRAEL INC: $10k → 6%PETA: $250k → 19%FLAME: $3k → 10%PRAGER UNIVERSITY FOUNDATION: $10k → 14%LITTLE SHELTER ANIMAL RESCUE: $5k → 7%AMERICAN FRIENDS OF MAGEN DAVID ADOM: $5k → 17%PALM BEACH CIVIC ASSOCIATION: $10k → 11%HABITAT FOR HUMANITY OF UPPER KEYS: $25k → 13%SAY DETROIT: $20k → 8%PETA: $250k → 19%PRAGER UNIVERSITY FOUNDATION: $8k → 14%PALM BEACH CIVIC ASSOCIATION: $5k → 11%ORCAT INC: $8k → 13%SAY DETROIT: $5k → 8%PETA: $250k → 19%SIMON WEISENTHAUL CENTER: $10k → 14%UNITED JEWISH APEAL - FEDERATION OF NY: $5k → 17%PALM BEACH CIVIC ASSOCIATION: $5k → 11%OCEAN REEF CHAPEL FOUNDATION: $5k → 13%SAY DETROIT: $5k → 8%PETA: $153k → 19%PRAGER UNIVERSITY FOUNDATION: $5k → 14%PALM BEACH CIVIC ASSOCIATION: $5k → 11%PETA: $143k → 19%SIMON WEISENTHAUL CENTER: $10k → 14%YOUTH AND FAMILY COUNSELING AGENCY: $26k → 6%PRAGER UNIVERSITY FOUNDATION: $5k → 14%YOUTH AND FAMILY COUNSELING AGENCY: $25k → 6%SIMON WEISENTHAUL CENTER: $5k → 14%YOUTH AND FAMILY COUNSELING AGENCY: $25k → 6%THE POSSE FOUNDATION: $5k → 17%YOUTH AND FAMILY COUNSELING AGENCY: $25k → 6%THE POSSE FOUNDATION: $5k → 17%SIMON WEISENTHAUL CENTER: $5k → 14%NORTH SHORE LAND ALLIANCE: $23k → 6%FRIENDS OF THE BAY: $10k → 6%FRIENDS OF THE BAY: $10k → 6%FRIENDS OF THE BAY: $10k → 6%NORTH SHORE LAND ALLIANCE: $5k → 6%EAST WOODS SCHOOL: $5k → 6%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

IL
MI
NY
CT
CA
VA
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.
03Its grantees
repeat funding

Who it funds again

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

96%of every dollar goes to organizations it has funded before.
$1.7M · 21 repeat orgs$66k to everyone else

21 repeat relationships: 15 still active in FY2025, 6 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

21
5

Total granted

$1.7M
$43k

Median revenue growth · since first grant

+40%
+153%

Still filing today

71%
60%

New vs renewed · share of each year

In FY2025, 94% of grant dollars renewed an existing relationship; $23k went to new ones.

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

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

’20’21’22’23’24’25
EducationAnimalsCommunity ImprovementHousing & ShelterEnvironmentArts & CultureOther
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

  • PF
    PEOPLE FOR THE ETHICAL TREATMENT OF ANIMALS INC
    5× · 2020–2025 · $1.0M · revenue +82%
  • OI
    ORCAT INC
    3× · 2020–2024 · $109k · revenue +569%
  • PU
    PRAGER UNIVERSITY FOUNDATION
    6× · 2020–2025 · $45k · revenue +112%

Funded once

  • HF
    HABITAT FOR HUMANITY OF UPPER KEYS INCgraduated
    one grant, 2020 · $25k · revenue +153%
  • UJ
    UNITED JEWISH APPEAL - FEDERATION OF NY
    one grant, 2023 · $10k
  • OR
    OCEAN REEF CHAPEL FOUNDATION INCgraduated
    one grant, 2022 · $5k · revenue +560%
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
Foundation for Jewish Philanthropies Inc

See schedule othe organization is a not-for-profit, public charity established in 1911 to provide for the quality and continuity of jewish life in western new york and around the world through private philanthropy. the foundation seeks,…

Philanthropy
2
Longneck Manor Conservation Foundation

To create memorable guest experiences which promote actions to help save species, habitats, and the communities who share those same landscapes

Animals
3
New Canaan Land Conservation Trust Inc

The mission of the new canaan land trust is to foster a connection between the new canaan community and its natural resources through the conservation and sustainable stewardship of our open space.

—
4
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…

—
5
Nantucket Conservation Foundation Inc

The nantucket conservation foundation owns, protects, and stewards over 9,000 acres of land and coastal shoreline, conserves nantucket's rare and significant natural resources, and engages in impactful ecological research to inform…

Environment
6
Long Island Jewish Medical Center

Long island jewish medical center is part of the northwell health ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality clinical care; educating the current and…

Health
7
Oceana Inc

To advocate for policy changes by governments and corporations in order to preserve ocean life and return the oceans to their former abundance.

Environment
8
Friends of the Earth

Friends of the earth strives for a more healthy and just world by defendng the environment and human health while advancing social and economic justice by conducting research and education, transforming the economy so it protects the…

Environment
9
Plainview Hospital

Plainview hospital is part of northwell health, inc ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality clinical care; educating the current and future…

Health
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
Jewish Federation Council of Greater La

Based on jewish values, the jewish federation of greater los angeles convenes and leads the community and leverages its resources to assure the continuity of the jewish people, support a secure state of israel, care for jews in need here…

Philanthropy
12
Governors Island Corporation

The governors island corporation, doing business as the trust for governors island, is the 501(c)(3) not-for-profit organization created by the city of new york and charged with the planning, redevelopment and ongoing operations of 150…

Animals
How this is measured
The grantee most central to the portfolio’s shape is American Friends of Meir Panim; the most unlike its peers is Our New Way Garden Inc. 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

22 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. 22 of the 33 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)
22/22
Grantees still filing
15/22
Grew since first funded

Where the money sits, by cause and then by grantee

PEOPLE FOR THE ETHICAL TREATMENT OF ANIMALS INC: $1,046,668 · AnimalsPEOPLE FOR THE ETHICAL TREATMENT OF ANIMALS INCORCAT INC: $109,050 · AnimalsORCAT INCYOUTH AND FAMILY COUNSELING AGENCY: $102,000 · OtherYOUTH AND FAMILY COUN…FRIENDS OF THE ISRAELI DEFENCE FORCES: $60,000 · OtherFRIENDS OF THE ISRAEL…FRIENDS OF THE BAY INC: $33,000 · OtherFRIENDS OF THE BAY IN…CHRISTIANS UNITED FOR ISRAEL: $21,000 · OtherCHRISTIANS UNITED FOR…LITTLE SHELTER ANIMAL RESCUE: $15,500 · OtherAMERICAN FRIENDS OF MAGEN DAVID ADOM: $17,000 · OtherPINK AID INC: $16,500 · Other+14 more: $78,625 · Other+14 moreSAY DETROIT: $130,000 · Housing & ShelterSAY DETRO…HABITAT FOR HUMANITY OF UPPER KEYS INC: $25,000 · Housing & ShelterHABITAT F…PRAGER UNIVERSITY FOUNDATION: $45,000 · EducationTHE POSSE FOUNDATION INC: $10,000 · EducationEAST WOODS SCHOOL INC: $5,000 · EducationTHE NORTH SHORE LAND ALLIANCE INC: $33,500 · EnvironmentPECONIC LAND TRUST INC: $4,500 · EnvironmentPalm Beach Civic Association Inc: $35,000 · Community ImprovementOYSTER BAY MAIN STREET ASSOCIATION: $2,500 · Community ImprovementSIMON WIESENTHAL CENTER INC: $30,000 · Arts & Culture
Animals$1,155,718Other$343,625Housing & Shelter$155,000Education$60,000Environment$38,000Community Improvement$37,500Arts & Culture$30,000

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 budgetPEOPLE FOR THE ETHICAL TREATMENT OF ANIMALS INC: $1,046,668 over 5y, 0.4% of budgetSAY DETROIT: $130,000 over 4y, 2.0% of budgetORCAT INC: $109,050 over 3y, 1.7% of budgetPRAGER UNIVERSITY FOUNDATION: $45,000 over 6y, 0.0% of budgetPalm Beach Civic Association Inc: $35,000 over 5y, 0.5% of budgetTHE NORTH SHORE LAND ALLIANCE INC: $33,500 over 5y, 0.2% of budgetFRIENDS OF THE BAY INC: $33,000 over 4y, 3.8% of budgetSIMON WIESENTHAL CENTER INC: $30,000 over 4y, 0.1% of budgetHABITAT FOR HUMANITY OF UPPER KEYS INC: $25,000 over 1y, 2.2% of budgetAMERICAN FRIENDS OF MAGEN DAVID ADOM: $17,000 over 3y, 0.0% of budgetPINK AID INC: $16,500 over 5y, 0.4% of budgetTHE POSSE FOUNDATION INC: $10,000 over 2y, 0.0% of budgetAMERICAN FRIENDS OF MEIR PANIM: $9,000 over 4y, 0.0% of budgetINTERNATIONAL FELLOWSHIP OF CHRISTIANS & JEWS INC: $6,000 over 3y, 0.0% of budgetTHE COMMUNITY FOUNDATION OF OYSTER BAY INC: $5,500 over 5y, 0.3% of budgetOCEAN REEF CHAPEL FOUNDATION INC: $5,000 over 1y, 0.2% of budgetEAST WOODS SCHOOL INC: $5,000 over 1y, 0.1% of budgetJEWISH NATIONAL FUND (KEREN KAYEMETH LEISRAEL) INC: $5,000 over 3y, 0.0% of budgetOld Westbury Gardens Inc: $5,000 over 5y, 0.0% of budgetPECONIC LAND TRUST INC: $4,500 over 3y, 0.0% of budgetOYSTER BAY MAIN STREET ASSOCIATION: $2,500 over 1y, 0.6% of budgetOur New Way Garden Inc: $2,000 over 1y, 1.4% 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 PEOPLE FOR THE ETHICAL TREATMENT OF ANIMALS INC ↗
  • Who funds SAY DETROIT ↗
  • Who funds ORCAT INC ↗
  • Who funds PRAGER UNIVERSITY FOUNDATION ↗
  • Who funds Palm Beach Civic Association Inc ↗
  • Who funds THE NORTH SHORE LAND ALLIANCE INC ↗
  • Who funds FRIENDS OF THE BAY INC ↗
  • Who funds SIMON WIESENTHAL CENTER INC ↗
  • Who funds HABITAT FOR HUMANITY OF UPPER KEYS INC ↗
  • Who funds AMERICAN FRIENDS OF MAGEN DAVID ADOM ↗
  • Who funds PINK AID INC ↗
  • Who funds THE POSSE FOUNDATION INC ↗
  • Who funds AMERICAN FRIENDS OF MEIR PANIM ↗
  • Who funds INTERNATIONAL FELLOWSHIP OF CHRISTIANS & JEWS INC ↗
  • Who funds THE COMMUNITY FOUNDATION OF OYSTER BAY INC ↗
  • Who funds OCEAN REEF CHAPEL FOUNDATION INC ↗
  • Who funds EAST WOODS SCHOOL INC ↗
  • Who funds JEWISH NATIONAL FUND (KEREN KAYEMETH LEISRAEL) INC ↗
  • Who funds Old Westbury Gardens Inc ↗
  • Who funds PECONIC LAND TRUST INC ↗
  • Who funds OYSTER BAY MAIN STREET ASSOCIATION ↗
  • Who funds Our New Way Garden 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.

Jewish Communal FundNY11.8× affinity4 shared granteesties to 5 of 5Hover any node to trace its alignments.Compare side by side →

Open a dossier: Jewish Communal Fund · 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 Frances B and J Ronald Terwilliger Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Frances B and J Ronald Terwilliger Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 40%0%1%3%5%funder's share of their income ↑0%1%3%4%5%share of the org’s income from government →
    no gov moneyreceives it· size = income
    4get 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
    ⤢ axis zoomed · 0–5%
    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 Frances B and J Ronald Terwilliger Foundation Inc?

    Find your warmest path to Frances B and J Ronald Terwilliger 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 33 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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