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Plinth

· Private foundation

Margaret Dumas Tr Uw

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.

$36k
Granted FY2025still arriving
12
Grants FY2025still arriving
1
States reached
$3k
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 FY20182025.

Arts & Culture$87kEnvironment$43kReligion$43kAnimals$22kHuman Services$22kScience & Tech$22kHealth$19k
02FY2025 · 12 grants

Where the money goes

Your grants by size, and where they go.

$2,958
Median grant
1
States reached
$680k
Total assets
Largest grants
RecipientAmount
South Shore Hospital$3,025
Phoenix Lodge AF & AM$2,958
Museum of Science$2,958
Boston Symphony Orchestra$2,958
Society for Pres of NE Antiquities$2,958
Appalachian Mountain Club$2,958
St Andrews Episcopal Church$2,958
Norwell Historical Society$2,958
First Parish of Norwell Unitarian$2,958
Museum of Fine Arts$2,958
MSPCA$2,958
Trustees of Reservations$2,958
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 (FY18–25) land where the poverty rate runs at 12%, against an area that typically sits at 8%. 59% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 8%South Shore Hospital: $3k → 7%Norwell Historical Society: $3k → 8%Trustees of Reservations: $3k → 10%Museum of Fine Arts: $3k → 16%South Shore Hospital: $3k → 7%First Parish of Norwell Unitarian: $3k → 8%Trustees of Reservations: $3k → 10%Boston Symphony Orchestra: $3k → 16%South Shore Hospital: $3k → 7%First Parish of Norwell Unitarian: $3k → 8%Trustees of Reservations: $3k → 10%Boston Symphony Orchestra: $3k → 16%SOUTH SHORE HOSPITAL: $3k → 7%Norwell Historical Society: $3k → 8%Trustees of Reservations: $3k → 10%Museum of Fine Arts: $3k → 16%Norwell Historical Society: $3k → 8%Boston Symphony Orchestra: $3k → 16%First Parish of Norwell Unitarian: $3k → 8%Museum of Fine Arts: $3k → 16%Norwell Historical Society: $3k → 8%Museum of Fine Arts: $3k → 16%First Parish of Norwell Unitarian: $3k → 8%Boston Symphony Orchestra: $3k → 16%Phoenix Lodge AF & AM: $3k → 8%Society for Pres of NE Antiquities: $3k → 16%St Andrews Episcopal Church: $3k → 8%Museum of Science: $3k → 16%Phoenix Lodge AF & AM: $3k → 8%Society for Pres of NE Antiquities: $3k → 16%St Andrews Episcopal Church: $3k → 8%Museum of Science: $3k → 16%St Andrews Episcopal Church: $3k → 8%Society for Pres of NE Antiquities: $3k → 16%Phoenix Lodge AF & AM: $3k → 8%Museum of Science: $3k → 16%Phoenix Lodge AF & AM: $3k → 8%Museum of Science: $3k → 16%St Andrews Episcopal Church: $3k → 8%Society for Pres of NE Antiquities: $3k → 16%MSPCA: $3k → 16%MSPCA: $3k → 16%MSPCA: $3k → 16%MSPCA: $3k → 16%Appalachian Mountain Club: $3k → 16%Appalachian Mountain Club: $3k → 16%Appalachian Mountain Club: $3k → 16%Appalachian Mountain Club: $3k → 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.

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.
$257k · 12 repeat orgs$0 to everyone else

12 repeat relationships — 12 still active in FY2025, 0 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

12
0

Total granted

$257k
$0

Still filing today

67%
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%’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’18’19’20’21’22’23’24’25
Arts & CultureEnvironmentAnimalsHealthOther

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

  • BS
    BOSTON SYMPHONY ORCHESTRA INC
    8× · 2018–2025 · $22k · revenue +6%
  • NH
    NORWELL HISTORICAL SOCIETY INC
    8× · 2018–2025 · $22k · revenue +334% · 35% of their budget
  • MASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS
    8× · 2018–2025 · $22k · revenue +94%

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
    American Museum of Natural History

    The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

    Arts & Culture
    2
    Massachusetts Outdoor Heritage Foundation Inc Attn Susan Sacco
    3
    Isabella Stewart Gardner Museum Inc

    Organization's mission statement true to the ambitious vision of its founder and her spirit of creative risk-taking, the mission of the isabella stewart gardner museum is: - to bring to life and preserve the rich historic collection; - to…

    Arts & Culture
    4
    Lowell Observatory

    The mission of lowell observatory is to pursue the study of astronomy, especially the study of our solar system and its evolution; to conduct pure research in astronomical phenomena; and to maintain quality public education and outreach…

    Science & Tech
    5
    Massachusetts Historical Society

    To promote understanding of the history of massachusetts and the nation by collecting and communicating materials and resources that foster historical knowledge.

    Arts & Culture
    6
    Science Museum of Minnesota

    The museum's mission statement is "turn on the science: inspire learning. inform policy. improve lives."

    Arts & Culture
    7
    Massachusetts Audubon Society Inc

    To protect the nature of massachusetts for people and for wildlife through education, land conservation, advocacy, scientific research, and habitat stewardship/restoration.

    Environment
    8
    New England Museum of Telephony
    9
    Maine Historical Society

    Maine Historical Society, founded in 1822, is a private non-profit whose mission is to preserve and share Maine's story. Based in Portland, we work closely with communities and partners throughout the state, and serve a statewide and…

    Arts & Culture
    10
    The Rhode Island Historical Society

    The rhode island historical society, through its collections, museums, and educational initiatives, welcomes everyone to engage with rhode island's complex and significant past.

    Arts & Culture
    11
    San Francisco Museum of Modern Art

    See schedule osfmoma believes the art of our time is vital and shares it with passion and purpose, and that art and the creative process can open minds and help build a better world. for that reason, we assemble unparalleled collections,…

    Arts & Culture
    12
    Manchester Historic Association

    To collect and preserve materials relating to the history of manchester, new hampshire, and to operate a museum, research center, and educational programs relating to this history for the benefit of the public.

    For reference, the grantee most central to the portfolio’s shape is The Trustees of Reservations and the most unlike its peers is Boston Symphony Orchestra 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

    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 12 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.

    1
    Load-bearing (≥25% of a budget)
    1
    Early backer (in before they grew)
    8/8
    Grantees still filing
    6/8
    Grew since you first funded

    Where your money sits — by cause, then by grantee

    BOSTON SYMPHONY ORCHESTRA INC — $21,643 · Arts & CultureBOSTON SYMPHONY ORCHESTRA INCNORWELL HISTORICAL SOCIETY INC — $21,643 · Arts & CultureNORWELL HISTORICAL SOCIETY INCMUSEUM OF SCIENCE — $21,643 · Arts & CultureMUSEUM OF SCIENCEMUSEUM OF FINE ARTS — $21,643 · Arts & CultureMUSEUM OF FINE ARTSPhoenix Lodge AF & AM — $21,643 · OtherPhoenix Lodge AF & AMFirst Parish of Norwell Unitarian — $21,643 · OtherFirst Parish of Norwell UnitarianSt Andrews Episcopal Church — $21,643 · OtherSt Andrews Episcopal ChurchSociety for Pres of NE Antiquities — $21,643 · OtherSociety for Pres of NE AntiquitiesAppalachian Mountain Club — $21,643 · EnvironmentAppalachian Mountai…THE TRUSTEES OF RESERVATIONS — $21,643 · EnvironmentTHE TRUSTEES OF RES…MASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS — $21,643 · AnimalsMASSACHUS…SOUTH SHORE HOSPITAL INC — $18,685 · Health
    Arts & Culture$86,572Other$86,572Environment$43,286Animals$21,643Health$18,685

    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 budgetAppalachian Mountain Club — $21,643 over 8y, 0.0% of budgetBOSTON SYMPHONY ORCHESTRA INC — $21,643 over 8y, 0.0% of budgetNORWELL HISTORICAL SOCIETY INC — $21,643 over 8y, 35% of budgetMASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS — $21,643 over 8y, 0.0% of budgetMUSEUM OF SCIENCE — $21,643 over 8y, 0.0% of budgetMUSEUM OF FINE ARTS — $21,643 over 8y, 0.0% of budgetTHE TRUSTEES OF RESERVATIONS — $21,643 over 8y, 0.0% of budgetSOUTH SHORE HOSPITAL INC — $18,685 over 8y, 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 Appalachian Mountain Club
    • Who funds BOSTON SYMPHONY ORCHESTRA INC
    • Who funds NORWELL HISTORICAL SOCIETY INC
    • Who funds MASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS
    • Who funds MUSEUM OF SCIENCE
    • Who funds MUSEUM OF FINE ARTS
    • Who funds THE TRUSTEES OF RESERVATIONS
    • Who funds SOUTH SHORE HOSPITAL INC

    Government reliance of your grantees

    Every dot is one organization Margaret Dumas Tr Uw 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 · 20%3%10%23%40%your share of their income ↑0%3%5%8%10%share of the org’s income from governmentmedian 1%
    • South Shore Hospital Inc5% of income from government
    • The Trustees of Reservations2% of income from government
    • Appalachian Mountain Club1% of income from government
    • Boston Symphony Orchestra Inc0% of income from government
    • Museum of Science0% of income from government
    • Museum of Fine Arts0% of income from government
    no gov moneyreceives it· size = income
    2get no government money at all
    0rely on government for over half their income
    ⤢ axis zoomed · 0–10%
    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.

    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 12 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