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Plinth

· Private foundation

The Halfway Rock Foundation co Eunice J Panetta

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.

$171k
Granted FY2025still arriving
17
Grants FY2025still arriving
8
States reached
$40k
Largest
01What you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
01What you fund
0194% classified

What you funded, over time

Every grant clustered by its grantee’s IRS cause code (NTEE), by year — across FY2017–2025.

Education$1.1MEnvironment$692kArts & Culture$380kInternational$103kRecreation & Sports$20kFood & Nutrition$10kPhilanthropy$10kHuman Services$5kYouth Development$5kOther$163k
02FY2025 · 17 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k10 grants · $37k
  • $10k–50k7 grants · $134k
$6,000
Median grant
8
States reached
$1.3M
Total assets
Largest grants
RecipientAmount
The Trustees of Reservations$40,000
Northeast Wilderness Trust$24,000
Barnard College$20,000
Friend Memorial Public Library$20,000
Phillips Exeter Academy$10,000
Emerald Necklace Conservacy$10,000
Financial Services Volunteer Corps$10,000
Isabella Stewart Gardner Museum$7,000
Museum of Fine Arts$6,000
Mothers Out Front$5,000
Harvard University$5,000
The 19th News$5,000
The Threepenny Review$3,000
Netherland-America Foundation$2,500
Mass Audubon Society$1,000
02The need
03

Do your dollars go where the need is?

Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.

show:

Your human-services grants (FY20–20, $5k) land where the poverty rate runs at 16%, against an area that typically sits at 8%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 8%New Politics Leadership Academy: $5k → 16%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

Which US states your grants reach

ME
VT
NH
WI
NY
MA
CT
CA
VA
DC
TX

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

03Your 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.

91%of every dollar goes to organizations you’ve funded before.
$2.0M · 21 repeat orgs$193k to everyone else

21 repeat relationships — 13 still active in FY2025, 8 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

21
29

Total granted

$2.0M
$190k

Median revenue growth · since first grant

+28%
+31%

Still filing today

90%
66%

New vs renewed · share of each year

In FY2025, 98% of grant dollars renewed an existing relationship; $3k 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
Arts & CultureEnvironmentEducationInternationalRecreation & SportsPhilanthropyOther

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

  • THE TRUSTEES OF RESERVATIONS
    9× · 2017–2025 · $638k · revenue +50%
  • PHILLIPS EXETER ACADEMY
    7× · 2017–2025 · $413k · revenue +65%
  • WS
    WARING SCHOOL INC
    7× · 2017–2023 · $275k · revenue +23%

Funded once

  • MG
    Massachusetts General Hospital
    one grant, 2022 · $25k
  • CA
    Charitable Aid Foundation of Americ
    one grant, 2021 · $22k
  • AF
    Amer Friends of the Leipzip Bach Ar
    one grant, 2020 · $15k

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

04Your 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
Boston Architectural College

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

—
2
Massachusetts Institute of Technology

The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.

Education
3
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.

—
4
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
5
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
6
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
7
Uss Constitution Museum Inc

The uss constitution museum engages all ages in the story of "old ironsides" to spark excitement about maritime heritage, naval service, and the american experience.

Arts & Culture
8
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
9
Harvard Conservation Trust

To preserve the unique character and natural resources of harvard.

Environment
10
The Brooklyn Institute of Arts and Sciences

The mission of the brooklyn institute of arts and sciences, d/b/a brooklyn museum (the "museum") is to bring people together through art and experiences that inspire celebration, compassion, courage, and the will to act. (see schedule o).

Arts & Culture
11
President and Trustees of Bates College

Bates is a college of the liberal arts and sciences, and is a coeducational, nonsectarian, residential college with special commitments to academic rigor, and to assuring in all of its efforts the dignity of each individual, and access to…

Education
12
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

For reference, the grantee most central to the portfolio’s shape is The Trustees of Reservations and the most unlike its peers is Arpeggione Ensemble 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 backsteadyCommunity FoundationsEnvironmental Conservation …Public Library OperationsPolicy Research and AdvocacyIndependent K-12 SchoolsLocal History MuseumsPregnancy Support ServicesCommunity Arts 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 36 years old; the field is 17. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number20%2%<5yr14%7%5–10yr20%15%10–20yr19%24%20–35yr14%12%35–55yr14%39%55yr+
THE FIELDby orgYOUR MONEYby value20%0%<5yr14%1%5–10yr20%2%10–20yr19%4%20–35yr14%5%35–55yr14%88%55yr+

The field is 20% startups (under 5 years old) — 2% 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 11% of the field you don’t fund.

orgs you fund
0.0%0/43
the rest of the field
11%
4,714/42,315

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.

04the grantee network

43 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. 43 of the 55 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)
9
Early backer (in before they grew)
43/43
Grantees still filing
31/43
Grew since you first funded

Where your money sits — by cause, then by grantee

PHILLIPS EXETER ACADEMY — $412,500 · EducationPHILLIPS EXETER ACADEMYWARING SCHOOL INC — $275,000 · EducationWARING SCHOOL INCPresident and Fellows of Harvard College — $274,377 · EducationPresident and Fellows of Harvard CollegeBARNARD COLLEGE — $110,000 · EducationBARNARD COLLEGEFRIEND MEMORIAL PUBLIC LIBRARY — $40,000 · Education+2 more — $15,000 · EducationTHE TRUSTEES OF RESERVATIONS — $637,538 · EnvironmentTHE TRUSTEES OF RESERVATIONSNORTHEAST WILDERNESS TRUST CORPORATION — $29,000 · Environment+8 more — $25,000 · EnvironmentTHE ACADEMY OF AMERICAN POETS INC — $220,000 · Arts & CultureTHE ACADEMY OF AM…MUSEUM OF FINE ARTS — $52,925 · Arts & CultureMUSEUM OF FINE AR…THE GLOUCESTER ADVENTUREINC — $32,000 · Arts & CultureTHE GLOUCESTER AD…ISABELLA STEWART GARDNER MUSEUM INC — $13,000 · Arts & Culture+10 more — $62,125 · Arts & Culture+10 morePhilips Academy — $26,000 · OtherMassachusetts General Hospital — $25,000 · OtherTHREEPENNY REVIEW — $23,000 · OtherCharitable Aid Foundation of Americ — $22,300 · OtherAmer Friends of the Leipzip Bach Ar — $15,000 · OtherNorth Shore Community Dev Coalition — $10,000 · OtherTRUSTEES OF BOSTON UNIVERSITY — $7,500 · OtherIndividual grant recipient — $7,500 · Other+11 more — $46,850 · OtherFinancial Services Volunteer Corps Inc — $85,000 · InternationalTHE NETHERLAND-AMERICA FOUNDATION INC — $12,500 · InternationalRAZOM INC — $5,000 · InternationalEMERALD NECKLACE CONSERVANCY INC — $20,000 · Recreation & SportsROOT NS INC — $10,000 · Food & Nutrition
Education$1,126,877Environment$691,538Arts & Culture$380,050Other$183,150International$102,500Recreation & Sports$20,000Food & Nutrition$10,000

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 TRUSTEES OF RESERVATIONS — $637,538 over 9y, 0.4% of budgetPHILLIPS EXETER ACADEMY — $412,500 over 7y, 0.1% of budgetWARING SCHOOL INC — $275,000 over 7y, 0.7% of budgetPresident and Fellows of Harvard College — $274,377 over 9y, 0.0% of budgetTHE ACADEMY OF AMERICAN POETS INC — $220,000 over 5y, 3.6% of budgetBARNARD COLLEGE — $110,000 over 6y, 0.0% of budgetFinancial Services Volunteer Corps Inc — $85,000 over 9y, 0.2% of budgetMUSEUM OF FINE ARTS — $52,925 over 7y, 0.0% of budgetFRIEND MEMORIAL PUBLIC LIBRARY — $40,000 over 2y, 1.2% of budgetTHE GLOUCESTER ADVENTUREINC — $32,000 over 4y, 1.9% of budgetNORTHEAST WILDERNESS TRUST CORPORATION — $29,000 over 2y, 0.1% of budgetTHREEPENNY REVIEW — $23,000 over 6y, 2.9% of budgetEMERALD NECKLACE CONSERVANCY INC — $20,000 over 2y, 0.2% of budgetISABELLA STEWART GARDNER MUSEUM INC — $13,000 over 4y, 0.0% of budgetTHE NETHERLAND-AMERICA FOUNDATION INC — $12,500 over 3y, 0.1% of budgetPEABODY ESSEX MUSEUM INC — $11,000 over 2y, 0.0% of budgetThe Panetta Institute for Public Policy — $10,000 over 1y, 0.3% of budgetMOTHERS OUT FRONT INC — $10,000 over 2y, 0.1% of budgetTHE 19TH NEWS — $10,000 over 2y, 0.0% of budgetROOT NS INC — $10,000 over 2y, 0.4% of budgetSOCIETY FOR THE PRESERVATION OF NEW ENGL — $8,000 over 1y, 0.0% of budgetTRUSTEES OF BOSTON UNIVERSITY — $7,500 over 1y, 0.0% of budgetFRACTURED ATLAS INC — $7,500 over 3y, 0.0% of budgetBOSTON MODERN ORCHESTRA PROJECT INC — $6,625 over 1y, 0.4% of budgetRAZOM INC — $5,000 over 1y, 0.0% of budgetPENOBSCOT MARINE MUSEUM — $5,000 over 1y, 0.5% of budgetBABSON COLLEGE — $5,000 over 1y, 0.0% of budgetHOPEWELL FUND — $5,000 over 1y, 0.0% of budgetMYSTIC SEAPORT MUSEUM INC — $5,000 over 1y, 0.0% of budgetWISCONSIN CONSERVATION VOICES INC — $5,000 over 1y, 0.4% of budgetNEW POLITICS LEADERSHIP ACADEMY INC — $5,000 over 1y, 0.2% of budgetWatermans Community Center — $5,000 over 1y, 0.4% of budgetAMERICAN FRIENDS OF GRANGE PARK OPERA FOUNDATION — $5,000 over 1y, 14% of budgetESSEX COUNTY GREENBELT ASSOCIATION — $3,500 over 1y, 0.1% of budgetCONSERVATION LAW FOUNDATION INC — $2,500 over 1y, 0.0% of budgetARPEGGIONE ENSEMBLE INC — $2,500 over 1y, 3.8% of budgetMANCHESTER-BY-THE-SEA MUSEUM INC — $1,500 over 1y, 0.3% of budgetMASSACHUSETTS AUDUBON SOCIETY INC — $1,000 over 1y, 0.0% of budgetForest Society of Maine — $1,000 over 1y, 0.0% of budgetCERES INC — $1,000 over 1y, 0.0% of budgetMANCHESTER COMMUNITY CENTER — $250 over 1y, 0.8% 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.

Boston Foundation IncEssex County Communit…Maine Community Found…Silicon Valley Commun…Eastern Bank Foundati…Institution for Savin…Fidelity FoundationMorgan Stanley Global…Gs Donor Advised Phil…Ge Aerospace Foundati…American Endowment Fo…National Philanthropi…
Boston Foundation IncMA16.9× affinity7 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Boston Foundation Inc · Essex County Community Foundation Inc · Maine Community Foundation Inc · Silicon Valley Community Foundation · Eastern Bank Foundation · Institution for Savings in Newburyport & Its Vicinity Charitable Foundation Inc · Fidelity Foundation · Morgan Stanley Global Impact Funding Trust Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Ge Aerospace Foundation · American Endowment Foundation · National Philanthropic Trust

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.

Government reliance of your grantees

Every dot is one organization The Halfway Rock Foundation co Eunice J Panetta funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.

2024
’20’21’22’23’24’25
no gov · 70%1%4%8%15%your share of their income ↑0%25%50%75%100%share of the org’s income from government →median 3%
  • Root Ns Inc — 26% of income from government
  • Trustees of Boston University — 12% of income from government
  • Essex County Greenbelt Association — 8% of income from government
  • Boston Debate League Incorporated — 7% of income from government
  • President and Fellows of Harvard College — 7% of income from government
  • Mystic Seaport Museum Inc — 5% of income from government
  • Arpeggione Ensemble Inc — 4% of income from government
  • Boston Modern Orchestra Project Inc — 4% of income from government
  • Peabody Essex Museum Inc — 3% of income from government
  • Babson College — 3% of income from government
  • Northeast Wilderness Trust Corporation — 2% of income from government
  • Society for the Preservation of New Engl — 2% of income from government
  • The Trustees of Reservations — 2% of income from government
  • Massachusetts Audubon Society Inc — 1% of income from government
  • Emerald Necklace Conservancy Inc — 0% of income from government
  • Museum of Fine Arts — 0% of income from government
  • Ceres Inc — 0% of income from government
no gov moneyreceives it· size = income
7get no government money at all
5report 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

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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.

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 55 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 2025, released 2025. 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 camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home
State money flows
the interactive map of money crossing state lines