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Plinth

· Private foundation

The Shelter Hill Foundation

Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$2.5M
Granted FY2024still arriving
45
Grants FY2024still arriving
11
States reached
$500k
Largest
01What you fundRead
02Your edgeRead
03Your fieldRead
01What you fund
0193% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2018–2024.

Education$2.8MArts & Culture$2.2MHealth$458kScience & Tech$260kRecreation & Sports$244kEnvironment$152kCommunity Improvement$103kAnimals$75kOther$0
02FY2024 · 45 grants

Where the money goes

Your grants by size, and where they go.

The 45 grants below total $2,180,950 — the rows itemised in this filing. The $2,493,551 headline is the total grant expense reported on the return, so the remaining $312,601 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.

By grant size · FY2024

  • Under $10k18 grants · $61k
  • $10k–50k19 grants · $325k
  • $50k–250k5 grants · $600k
  • $250k+3 grants · $1.2M
$10,000
Median grant
11
States reached
$49M
Total assets
Largest grants
RecipientAmount
AMERICAN FEDERATION FOR CHILDREN GROWTH FUND$500,000
PRESERVATION FOUNDATION OF PALM BEACH, INC.$445,000
COX SCIENCE CENTER & AQUARIUM$250,000
CANCER RESEARCH INSTITUTE$200,000
THE NEW YORK YACHT CLUB FOUNDATION$100,000
CASE WESTERN RESERVE UNIV. SCHOOL OF MEDICINE$100,000
PRESERVATION FOUNDATION OF PALM BEACH, INC.$100,000
THE CLEVELAND MUSEUM OF NATURAL HISTORY$100,000
ASPETUCK LAND TRUST$30,000
HAWKEN SCHOOL$30,000
FRESH AIR FUND$25,000
US WRESTLING FOUNDATION FUND$25,000
SASCO CREEK NEIGHBORS ENVIRONMENTAL TRUST (SCNETI)$25,000
NEWFOUND LAKE REGION ASSOCIATION$25,000
SOCIETY OF THE FOUR ARTS$25,000
02Your edge
repeat funding

Who you back again

Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.

92%of every dollar goes to organizations you’ve funded before.
$6.0M · 33 repeat orgs$510k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +28% since the first grant, against +19% for the ones you funded once.

33 repeat relationships — 28 still active in FY2024, 5 since wound down; 12 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

33
15

Total granted

$6.0M
$65k

Median revenue growth · since first grant

+28%
+19%

Still filing today

70%
40%

New vs renewed · share of each year

In FY2024, 79% of grant dollars renewed an existing relationship; $445k went to new ones.

50%100%’22’23’24
RenewedFirst-time

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

’22’23’24
EducationArts & CultureHealthEnvironmentPhilanthropyCommunity ImprovementOther

First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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

  • AF
    AMERICAN FEDERATION FOR CHILDREN GROWTH FUND INC
    3× · 2022–2024 · $1.5M · revenue +46%
  • CASE WESTERN RESERVE UNIVERSITY
    3× · 2022–2024 · $1.0M · revenue +13%
  • CR
    CANCER RESEARCH INSTITUTE INC
    3× · 2022–2024 · $417k · revenue +5%

Funded once

  • TL
    THE LIGHTHOUSE GUILD
    one grant, 2022 · $15k
  • OE
    OPPORTUNITY EARLY CHILDHOOD EDUCATION CENTER
    one grant, 2022 · $10k
  • PB
    PALM BEACH NAVY SEAL TRIBUTE
    one grant, 2022 · $10k

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

03Your field

The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — 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
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
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
Harvard Conservation Trust

To preserve the unique character and natural resources of harvard.

Environment
5
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
6
Boston Architectural College

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

—
7
Northeast College of Health Sciences

Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.

Education
8
The American College of Trust and Estate Counsel

Enhance the ability of actec members to provide the most efficient and highest quality services to their clients; develop qualified trust and estate counselors; improve and reform probate, trust and tax laws, procedures, and standards of…

Community Improvement
9
Nantucket Historical Association

The nantucket historical association preserves and interprets the history of nantucket through its programs, collections, and properties, in order to promote the island's significance and foster an appreciation of it among all audiences.

Arts & Culture
10
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
11
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
12
The Frick Collection

The Frick Collection (the "Collection") operates an internationally recognized art museum and library program for the inspiration and enjoyment of the public and for the advancement of the study of fine arts and kindred subjects.

—

For reference, the grantee most central to the portfolio’s shape is The Preservation Society of Newport County and the most unlike its peers is Dana-Farber Cancer Institute Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.

← shrinkinggrowing →↓ leaning in → pulling backsteadyLocal History MuseumsChildhood Cancer SupportEnvironmental Advocacy and …Veteran Support ServicesCommunity FoundationsPublic Library SupportYouth Development CentersCommunity Arts CentersVolunteer Fire & RescueCharter and Independent Sch…Pregnancy Support CentersFaith-Based Liberal Arts Co…
the sector your giving your giving is ahead of the sector the sector’s ahead of you· dot size = how much the theme matters to each side
Ordered by the change in your giving — leaning in on top, pulling back at the bottom. The bar between the two dots is how out of step you are with the sector. Hover any row for detail.

Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.

Your grantees are a median of 64 years old; the field is 16. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number22%0%<5yr14%10%5–10yr19%10%10–20yr16%15%20–35yr13%10%35–55yr16%54%55yr+
THE FIELDby orgYOUR MONEYby value22%0%<5yr14%0%5–10yr19%2%10–20yr16%27%20–35yr13%33%35–55yr16%38%55yr+

The field is 22% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close — 0.0% lost their exemption, against 13% of the field you don’t fund.

orgs you fund
0.0%0/40
the rest of the field
13%
240,396/1,819,525

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

03the grantee network

37 grantees tracked through their own filings, 2017–2025.

Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.

Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 37 of the 61 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.

0
Load-bearing (≥25% of a budget)
5
Early backer (in before they grew)
37/37
Grantees still filing
25/37
Grew since you first funded

Where your money sits — by cause, then by grantee

AMERICAN FEDERATION FOR CHILDREN GROWTH FUND INC — $1,500,000 · EducationAMERICAN FEDERATION FOR CHILDREN GROWTH FUND …CASE WESTERN RESERVE UNIVERSITY — $1,000,000 · EducationCASE WESTERN RESERVE UNIVERSITYHAWKEN SCHOOL — $90,000 · Education+7 more — $31,730 · EducationThe Preservation Foundation of Palm Beach Inc — $1,902,364 · Arts & CultureThe Preservation Foundation of Palm Beach …Cox Science Center and Aquarium Inc — $260,000 · Arts & CultureCox Science Center and Aquarium IncCLEVELAND MUSEUM OF NATURAL HISTORY — $100,000 · Arts & Culture+6 more — $154,000 · Arts & Culture+6 moreCANCER RESEARCH INSTITUTE INC — $417,375 · HealthDana-Farber Cancer Institute Inc — $15,000 · Health+1 more — $5,000 · HealthUS WRESTLING FOUNDATION FUND — $113,999 · OtherUS WRESTL…BOYS AND GIRLS CLUB OF PALM BEACH — $50,000 · OtherBOYS AND …THE LORD'S PLACE — $30,000 · OtherTHE LORD'…PEGGY ADAMS ANIMAL RESCUE — $30,000 · OtherPEGGY ADA…SASCO CREEK NEIGHBORS ENVIRONMENTAL TRUST (SCNETI) — $25,000 · OtherPALM BEACH ZOO CONSERVATION SOCIETY — $25,000 · OtherFRESH AIR FUND — $90,000 · OtherFRESH AIR…CENTRAL PARK CONSERVANCY INC — $32,500 · OtherCENTRAL P…+23 more — $138,300 · Other+23 morePARTNERSHIP FOR INNER CITY EDUCATION DBA PARTNERSHIP SCHOOLS — $200,000 · PhilanthropyCommunity Foundation of Southern New Mexico — $10,000 · PhilanthropyPALM BEACH NAVY SEAL EVENING OF TRIBUTE INC — $10,000 · PhilanthropyASPETUCK LAND TRUST — $90,000 · EnvironmentNEWFOUND LAKE REGION ASSOCIATION — $31,000 · EnvironmentAUDUBON SOCIETY OF RHODE ISLAND — $20,000 · EnvironmentNEW YORK YACHT CLUB FOUNDATION — $103,250 · Community ImprovementPalm Beach Civic Association Inc — $30,000 · Community Improvement
Education$2,621,730Arts & Culture$2,416,364Health$437,375Other$534,799Philanthropy$220,000Environment$141,000Community Improvement$133,250

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetThe Preservation Foundation of Palm Beach Inc — $1,902,364 over 3y, 5.6% of budgetAMERICAN FEDERATION FOR CHILDREN GROWTH FUND INC — $1,500,000 over 3y, 4.9% of budgetCASE WESTERN RESERVE UNIVERSITY — $1,000,000 over 3y, 0.0% of budgetCANCER RESEARCH INSTITUTE INC — $417,375 over 3y, 0.8% of budgetCox Science Center and Aquarium Inc — $260,000 over 1y, 0.6% of budgetPARTNERSHIP FOR INNER CITY EDUCATION DBA PARTNERSHIP SCHOOLS — $200,000 over 2y, 0.6% of budgetNEW YORK YACHT CLUB FOUNDATION — $103,250 over 3y, 3.0% of budgetCLEVELAND MUSEUM OF NATURAL HISTORY — $100,000 over 1y, 0.4% of budgetHAWKEN SCHOOL — $90,000 over 3y, 0.1% of budgetASPETUCK LAND TRUST — $90,000 over 3y, 1.9% of budgetFRESH AIR FUND — $90,000 over 3y, 0.3% of budgetThe Society of the Four Arts Inc — $71,000 over 3y, 0.2% of budgetNORTON MUSEUM OF ART INC — $39,300 over 2y, 0.1% of budgetCENTRAL PARK CONSERVANCY INC — $32,500 over 2y, 0.0% of budgetNEWFOUND LAKE REGION ASSOCIATION — $31,000 over 3y, 1.3% of budgetPalm Beach Civic Association Inc — $30,000 over 3y, 0.5% of budgetTHE PRESERVATION SOCIETY OF NEWPORT COUNTY — $25,000 over 2y, 0.0% of budgetAUDUBON SOCIETY OF RHODE ISLAND — $20,000 over 1y, 0.4% of budgetDana-Farber Cancer Institute Inc — $15,000 over 2y, 0.0% of budgetNATIONAL TRUST FOR HISTORIC PRESERVATION IN THE UNITED STATES — $15,000 over 2y, 0.0% of budgetPEQUOT LIBRARY ASSOCIATION — $12,500 over 3y, 0.4% of budgetCommunity Foundation of Southern New Mexico — $10,000 over 1y, 0.1% of budgetCIRCLE PROGRAM — $10,000 over 2y, 0.5% of budgetPALM BEACH NAVY SEAL EVENING OF TRIBUTE INC — $10,000 over 1y, 1.1% of budgetGlades Academy Foundation Inc — $7,500 over 2y, 0.3% of budgetWEST PALM GOLF COMMUNITY TRUST INC — $5,000 over 1y, 0.0% of budgetPLANNED PARENTHOOD OF SOUTH FLORIDA AND THE TREASURE COAST INC — $5,000 over 1y, 0.0% of budgetLake Forest College — $3,500 over 1y, 0.0% of budgetALLEN-CHASE FOUNDATION DBA EAGLEBROOK SCHOOL — $3,000 over 3y, 0.0% of budgetTHE BOYS' CLUB OF NEW YORK — $2,500 over 1y, 0.0% of budgetJAMESTOWN ARTS CENTER — $2,200 over 1y, 0.3% of budgetSUFFIELD ACADEMY — $2,000 over 2y, 0.0% of budgetTHE TAFT SCHOOL CORPORATION — $2,000 over 2y, 0.0% of budgetTHE PEQUOT YACHT CLUB FOUNDATION INC — $1,500 over 1y, 2.5% of budgetCENTER FOR CREATIVE EDUCATION INC — $1,230 over 1y, 0.1% of budgetNATIONAL BRAIN TUMOR SOCIETY INC — $500 over 1y, 0.0% of budgetSOUTHPORT VOLUNTEER FIRE DEPARTMENT — $300 over 1y, 0.5% of budget
Go grantee by grantee — a decade per org, and how each moved after you funded them

A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.

The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.

The Bessemer Giving F…Ge Aerospace Foundati…Vanguard Charitable E…National Philanthropi…The Bank of America C…Donor Advised Charita…Fidelity Investments …American Online Givin…Amazonsmile Foundation
The Bessemer Giving FundNJ14.3× affinity5 shared granteesties to 8 of 8Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Bessemer Giving Fund · Ge Aerospace Foundation · Vanguard Charitable Endowment Program · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · American Online Giving Foundation Inc · Amazonsmile Foundation

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.

On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 61 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your 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. How we build these →

Generated from your IRS Form 990-PF e-file return for fiscal year 2024, released 2024. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

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