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Plinth

· Private foundation

Sneath Dorothy Melcher Tr Uind

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.

$280k
Granted FY2025still arriving
8
Grants FY2025still arriving
1
States reached
$60k
Largest
01What you fund
01100% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20202025.

Education$1.7M
02FY2025 · 8 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • $10k–50k6 grants · $170k
  • $50k–250k2 grants · $110k
$30,000
Median grant
1
States reached
$4.7M
Total assets
Largest grants
RecipientAmount
THE WINSOR SCHOOL$60,000
THE ROXBURY LATIN SCHOOL$50,000
THE RIVERS SCHOOL$40,000
NOBLE AND GREENOUGH SCHOOL$30,000
BEAVER COUNTY DAY SCHOOL$30,000
MILTON ACADEMY SCHOOL$30,000
BROOKS SCHOOL$20,000
THAYER ACADEMY$20,000
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:

Dollar for dollar, your grants (FY20–23) land where the poverty rate runs at 11%, against an area that typically sits at 7%. 64% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 7%BEAVER COUNTY DAY SCHOOL: $35k → 7%THE RIVERS SCHOOL: $45k → 8%BROOKS SCHOOL: $20k → 10%THE ROXBURY LATIN SCHOOL: $60k → 16%BEAVER COUNTY DAY SCHOOL: $35k → 7%THE RIVERS SCHOOL: $45k → 8%BROOKS SCHOOL: $20k → 10%THE ROXBURY LATIN SCHOOL: $60k → 16%BEAVER COUNTY DAY SCHOOL: $30k → 7%THE RIVERS SCHOOL: $40k → 8%BROOKS SCHOOL: $20k → 10%THE ROXBURY LATIN SCHOOL: $55k → 16%BEAVER COUNTY DAY SCHOOL: $30k → 7%THE RIVERS SCHOOL: $40k → 8%BROOKS SCHOOL: $20k → 10%THE ROXBURY LATIN SCHOOL: $50k → 16%MILTON ACADEMY SCHOOL: $40k → 7%THE WINSOR SCHOOL: $60k → 16%MILTON ACADEMY SCHOOL: $40k → 7%THE WINSOR SCHOOL: $60k → 16%MILTON ACADEMY SCHOOL: $25k → 7%THE WINSOR SCHOOL: $60k → 16%MILTON ACADEMY SCHOOL: $15k → 7%THE WINSOR SCHOOL: $60k → 16%MILTON ACADEMY: $5k → 7%NOBLE AND GREENOUGH SCHOOL: $35k → 7%NOBLE AND GREENOUGH SCHOOL: $30k → 7%NOBLE AND GREENOUGH SCHOOL: $20k → 7%NOBLE AND GREENOUGH SCHOOL: $20k → 7%THAYER ACADEMY: $15k → 7%THAYER ACADEMY: $10k → 7%THAYER ACADEMY: $10k → 7%THAYER ACADEMY: $10k → 7%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.

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.

100%of every dollar goes to organizations you’ve funded before.
$1.7M · 9 repeat orgs$0 to everyone else

9 repeat relationships — 8 still active in FY2025, 1 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

9
0

Total granted

$1.7M
$0

Still filing today

89%
0%

New vs renewed · share of each year

In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

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

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 WINSOR SCHOOL
    6× · 2020–2025 · $360k · revenue +26%
  • TR
    THE ROXBURY LATIN SCHOOL
    6× · 2020–2025 · $325k · revenue +28%
  • TR
    THE RIVERS SCHOOL CORPORATION
    6× · 2020–2025 · $250k · revenue +19%

Funded once

    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
    Masters School

    The masters school celebrates active participation, deep understanding, and meaningful connection. a community of diverse individuals, we gather to learn, to strive, to dare, to do - to be a power for good in the world.

    2
    Buckingham Browne & Nichols School

    Bb&n, an all gender day school in cambridge, massachusetts, was established in 1974 by the merger of two independent schools, the buckingham school and the browne & nichols school, founded respectively in 1889 and 1883. located on multiple…

    Education
    3
    Pembroke Hill School

    A preschool through 12th grade, private, college preparatory school. the school's mission statement is "together, cultivating the best in each for the benefit of all."

    Education
    4
    Phillips Exeter Academy

    Unite goodness and knowledge and inspire youth from every quarter to lead purposeful lives. [text in quotations is taken from the academy's deed of gift, drafted in 1781] knowledge and goodness "above all, it is expected that the attention…

    Education
    5
    Darrow School

    Darrow school is dedicated to serving students with diverse backgrounds and abilities, building on each student's talents and interests to inspire enduring confidence for success in college and life. this mission is accomplished through…

    Education
    6
    The Cambridge School of Weston Inc

    The cambridge school of weston's mission is to provide a progressive education that emphasizes deep learning and meaningful relationships. our dynamic program inspires students to discover who they are and what their contribution is to…

    Education
    7
    Brunswick School Inc

    Brunswick school, inc. is a day school for boys in pre-kindergarten through twelfth grade. the purpose of the school is to educate the "whole boy". it does so by helping boys and young men - without regard to culture, ethnicity or religion…

    Education
    8
    The Fenn School

    Guided by our motto, sua sponte, and inspired by our core values of honesty, respect, empathy, and courage, the fenn school challenges each boy to take responsibility for himself, for his own education, and for the well-being of others.…

    9
    Meadowbrook School of Weston Incorporated

    Meadowbrook knows, loves, and challenges every child. together, as a diverse community with high academic, ethical and social standards, we nurture character, promote confidence, inspire creativity and foster critical thinking skills as we…

    Education
    10
    Boston Architectural College

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

    11
    Pine Cobble School Incorporated

    Provide private school education for children from nursery school through grade 8

    Education
    12
    Suffield Academy

    Suffield Academy is a coeducational independent secondary school serving a diverse student body of day and boarding students from across the United States and from many foreign counties. The school is grounded in a tradition of academic…

    Education

    For reference, the grantee most central to the portfolio’s shape is The Rivers School Corporation and the most unlike its peers is The Winsor School. 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

    8 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 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 8 of the 9 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)
    0
    Early backer (in before they grew)
    8/8
    Grantees still filing
    8/8
    Grew since you first funded

    Where your money sits — by cause, then by grantee

    THE WINSOR SCHOOL — $360,000 · EducationTHE WINSOR SCHOOLTHE ROXBURY LATIN SCHOOL — $325,000 · EducationTHE ROXBURY LATIN SCHOOLTHE BEAVER COUNTRY DAY SCHOOL INC — $190,000 · EducationTHE BEAVER COUNTRY DAY SCHOOL INCNOBLE AND GREENOUGH SCHOOL — $165,000 · EducationNOBLE AND GREENOUGH SCHOOLBROOKS SCHOOL — $120,000 · EducationBROOKS SCHOOLTRUSTEES OF THAYER ACADEMY INC — $85,000 · EducationTRUSTEES OF THAYER ACADEMY INC+1 more — $35,000 · EducationTHE RIVERS SCHOOL CORPORATION — $250,000 · OtherTHE RIVERS SCHOOL CORPORAT…MILTON ACADEMY SCHOOL — $150,000 · OtherMILTON ACADEMY SCHOOL
    Education$1,280,000Other$400,000

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

    25%50%75%100%$100Mgrantee revenue →↑ your share of their budgetTHE WINSOR SCHOOL — $360,000 over 6y, 0.2% of budgetTHE ROXBURY LATIN SCHOOL — $325,000 over 6y, 0.3% of budgetTHE RIVERS SCHOOL CORPORATION — $250,000 over 6y, 0.1% of budgetTHE BEAVER COUNTRY DAY SCHOOL INC — $190,000 over 6y, 0.1% of budgetNOBLE AND GREENOUGH SCHOOL — $165,000 over 6y, 0.1% of budgetBROOKS SCHOOL — $120,000 over 6y, 0.1% of budgetTRUSTEES OF THAYER ACADEMY INC — $85,000 over 6y, 0.0% of budgetMILTON ACADEMY — $35,000 over 2y, 0.0% 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.

    • Who funds THE WINSOR SCHOOL
    • Who funds THE ROXBURY LATIN SCHOOL
    • Who funds THE RIVERS SCHOOL CORPORATION
    • Who funds THE BEAVER COUNTRY DAY SCHOOL INC
    • Who funds NOBLE AND GREENOUGH SCHOOL
    • Who funds BROOKS SCHOOL
    • Who funds TRUSTEES OF THAYER ACADEMY INC
    • Who funds MILTON ACADEMY

    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.

    Fidelity FoundationMA13.3× affinity4 shared granteesties to 9 of 9Hover any node to trace its alignments.Compare side by side →

    Open a dossier: Fidelity Foundation · Boston Foundation Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · 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.

    Government reliance of your grantees

    Every dot is one organization Sneath Dorothy Melcher Tr Uind 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
    202122232425
    no gov · 60%0%1%3%5%your share of their income ↑0%1%3%4%5%share of the org’s income from governmentmedian 0%
    • Milton Academy0% of income from government
    no gov moneyreceives it· size = income
    6get no government money at all
    1report 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, FY2025

    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.

    05Through Plinth

    Warm introductions · Powered by PlinthPlus

    How do I get to Sneath Dorothy Melcher Tr Uind?

    Find your warmest path to Sneath Dorothy Melcher Tr Uind 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 directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 9 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

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