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Plinth

· Private foundation

The Peter M Sacerdote Foundation

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.

$410k
Granted FY2025still arriving
9
Grants FY2025still arriving
4
States reached
$100k
Largest
01What you fund
0192% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20212025.

Arts & Culture$409kEducation$310kHealth$200kEnvironment$180kRecreation & Sports$100kYouth Development$5kOther$0
02FY2025 · 9 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k1 grant · $5k
  • $10k–50k3 grants · $55k
  • $50k–250k5 grants · $350k
$50,000
Median grant
4
States reached
$13M
Total assets
Largest grants
RecipientAmount
Nantucket Conservation Foundation Inc$100,000
Central Park Conservancy$100,000
Metropolitan Museum of Art$50,000
Nantucket Atheneum$50,000
The Garden Conservancy$50,000
Greenwich Country Day School Inc$25,000
Taft School Corporation$20,000
The Greenwich Land Trust Inc$10,000
Boys & Girls Clubs of America$5,000
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 (FY23–25) land where the poverty rate runs at 12%, against an area that typically sits at 11%. 54% of your dollars go to grantees based in above-average-need neighborhoods. Your grants spread fairly evenly across need levels.

area typical 11%NANTUCKET COTTAGE HOSPITAL: $170k → 6%The Garden Conservancy: $50k → 6%Central Park Conservancy: $100k → 17%Taft School Corporation: $20k → 9%The Greenwich Land Trust Inc: $10k → 9%Boys & Girls Clubs of America: $5k → 13%GREENWICH COUNTRY DAY SCHOOL INC: $25k → 14%Nantucket Conservation Foundation Inc: $100k → 6%Metropolitan Museum of Art: $293k → 17%GREENWICH COUNTRY DAY SCHOOL INC: $25k → 14%Nantucket Atheneum: $50k → 6%Metropolitan Museum of Art: $50k → 17%Greenwich Country Day School Inc: $25k → 14%NANTUCKET COTTAGE HOSPITAL: $30k → 6%Nantucket Atheneum: $10k → 6%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.

65%of every dollar goes to organizations you’ve funded before.
$778k · 6 repeat orgs$426k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +30% since the first grant, against +12% for the ones you funded once.

6 repeat relationships — 5 still active in FY2025, 1 since wound down; 4 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

6
5

Total granted

$778k
$171k

Median revenue growth · since first grant

+30%
+12%

Still filing today

83%
40%

New vs renewed · share of each year

In FY2025, 38% of grant dollars renewed an existing relationship; $255k went to new ones.

50%100%’23’24’25
RenewedFirst-time

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

’23’24’25
EducationEnvironmentArts & CultureRecreation & SportsYouth DevelopmentOther

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

  • MM
    METROPOLITAN MUSEUM OF ART
    2× · 2024–2025 · $343k · revenue +30%
  • GC
    GREENWICH COUNTRY DAY SCHOOL INC
    3× · 2023–2025 · $75k · revenue +52%
  • TT
    THE TAFT SCHOOL CORPORATION
    2× · 2024–2025 · $70k · revenue +53%

Funded once

  • NOBLE AND GREENOUGH SCHOOL
    one grant, 2023 · $50k · revenue +12%
  • TT
    THE TUFT SCHOOL
    one grant, 2023 · $50k
  • ES
    EPIPHANY SCHOOL INC
    one grant, 2023 · $50k

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
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
3
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
4
National Tropical Botanical Garden

To enrich life by perpetuating tropical plants, ecosystems and cultural heritage through discovery, scientific research, conservation, and education.

Environment
5
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
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
Buckley Country Day School

The school's mission is grounded in the belief expressed by b. lord buckley that opening the eyes and awakening the mind is the essence of education. guided by that mission for almost a century, buckley has purposely focused on developing…

Education
8
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
9
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
10
Greenwich Academy Inc

Greenwich academy is an independent college-preparatory day school for girls and young women that seeks to foster excellence. for more information see schedule o.its mission is to provide a challenging, comprehensive educational experience…

Education
11
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
12
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.

For reference, the grantee most central to the portfolio’s shape is Noble and Greenough School and the most unlike its peers is Metropolitan Museum of Art. 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

11 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. 11 of the 15 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)
2
Early backer (in before they grew)
11/11
Grantees still filing
7/11
Grew since you first funded

Where your money sits — by cause, then by grantee

NANTUCKET COTTAGE HOSPITAL — $200,000 · OtherNANTUCKET COTTAGE HOSPITALNANTUCKET ATHENEUM INC — $60,000 · OtherNANTUCKET ATHENEUM INCTHE TUFT SCHOOL — $50,000 · OtherTHE TUFT SCHOOLEPIPHANY SCHOOL INC — $50,000 · OtherEPIPHANY SCHOOL INC+1 more — $6,000 · OtherMETROPOLITAN MUSEUM OF ART — $343,000 · Arts & CultureMETROPOLITAN MUSEUM OF ARTGREENWICH COUNTRY DAY SCHOOL INC — $75,000 · EducationGREENWICH COUNTRY D…THE TAFT SCHOOL CORPORATION — $70,000 · EducationTHE TAFT SCHOOL COR…NOBLE AND GREENOUGH SCHOOL — $50,000 · EducationNOBLE AND GREENOUGH…THE FESSENDEN SCHOOL — $15,000 · EducationTHE FESSENDEN SCHOO…NANTUCKET CONSERVATION FOUNDATION INC — $100,000 · EnvironmentNANTUCKET CONSER…THE GARDEN CONSERVANCY INC — $50,000 · EnvironmentTHE GARDEN CONSE…THE GREENWICH LAND TRUST INC — $30,000 · EnvironmentTHE GREENWICH LA…CENTRAL PARK CONSERVANCY INC — $100,000 · Recreation & SportsCENTRAL P…BOYS & GIRLS CLUBS OF AMERICA — $5,000 · Youth Development
Other$366,000Arts & Culture$343,000Education$210,000Environment$180,000Recreation & Sports$100,000Youth Development$5,000

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

25%50%75%100%$10M$100Mgrantee revenue →↑ your share of their budgetMETROPOLITAN MUSEUM OF ART — $343,000 over 2y, 0.0% of budgetCENTRAL PARK CONSERVANCY INC — $100,000 over 1y, 0.1% of budgetGREENWICH COUNTRY DAY SCHOOL INC — $75,000 over 3y, 0.0% of budgetTHE TAFT SCHOOL CORPORATION — $70,000 over 2y, 0.1% of budgetNANTUCKET ATHENEUM INC — $60,000 over 2y, 0.2% of budgetTHE GARDEN CONSERVANCY INC — $50,000 over 1y, 0.7% of budgetNOBLE AND GREENOUGH SCHOOL — $50,000 over 1y, 0.1% of budgetTHE GREENWICH LAND TRUST INC — $30,000 over 3y, 1.0% of budgetTHE FESSENDEN SCHOOL — $15,000 over 1y, 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.

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.

Gs Donor Advised Philanthropy FundNY12.3× affinity4 shared granteesties to 3 of 3Hover any node to trace its alignments.Compare side by side →

Open a dossier: Gs Donor Advised Philanthropy Fund · National Philanthropic Trust · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund

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 Peter M Sacerdote Foundation 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 · 40%0%1%3%5%your share of their income ↑0%6%13%19%25%share of the org’s income from governmentmedian 4%
  • Nantucket Conservation Foundation Inc4% of income from government
  • The Fessenden School0% of income from government
no gov moneyreceives it· size = income
4get 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 · 0–25%
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 15 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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