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The Peter and Eaddo Kiernan Foundation at a glance

· Private foundation

The Peter and Eaddo Kiernan 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.

$1.2M
Granted FY2024still arriving
20
Grants FY2024still arriving
10
States reached
$415k
Largest
01What it fundsRead
02Its granteesRead
03Its fieldRead
04Through PlinthRead
01What it funds
0188% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Arts & Culture$730kEducation$668kPhilanthropy$470kEnvironment$160kCommunity Improvement$100kRecreation & Sports$85kHealth$55kAnimals$35kOther$0
02FY2024 · 20 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • $10k–50k15 grants · $230k
  • $50k–250k4 grants · $550k
  • $250k+1 grant · $415k
$20,000
Median grant
10
States reached
$1.7M
Total assets
Largest grants
RecipientAmount
The Society of the Four Arts Inc$415,000
The President & Trustees of Williams College$200,000
The Society of the Four Arts Inc$200,000
Robin Hood Foundation$100,000
Canterbury School Operating Account$50,000
University of Virginia$40,000
The Society of the Four Arts Inc$25,000
Virginia Athletics Foundation$25,000
Icahn School of Medicine at Mount Sinai$20,000
Corporation of Mercer University$20,000
National Sailing Hall of Fame$10,000
Salve Regina University$10,000
Trout Unlimited$10,000
Salve Regina University$10,000
Robert Potter League for Animals Inc$10,000
02Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

52%of every dollar goes to organizations it has funded before.
$1.3M · 8 repeat orgs$1.2M to everyone else

Grantees it renews have grown median revenue +24% since the first grant, against +17% for those funded once.

8 repeat relationships: 5 still active in FY2024, 3 since wound down; 10 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

8
14

Total granted

$1.3M
$365k

Median revenue growth · since first grant

+24%
+17%

Still filing today

50%
64%

New vs renewed · share of each year

In FY2024, 33% of grant dollars renewed an existing relationship; $805k went to new ones.

50%100%’20’21’23’24
RenewedFirst-time

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

’20’21’23’24
Arts & CultureEducationEnvironmentAnimalsPhilanthropyCommunity ImprovementOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • Williams College
    2× · 2023–2024 · $253k · revenue +25%
  • NATIONAL PARKS CONSERVATION ASSOCIATION
    2× · 2021–2023 · $70k · revenue +24%
  • TC
    THE CORPORATION OF MERCER UNIVERSITY
    3× · 2021–2024 · $60k · revenue +9%

Funded once

  • NY
    NEW YORK YACHT CLUB FOUNDATION
    one grant, 2021 · $100k · revenue +17%
  • TP
    THE PRESERVATION SOCIETY OF NEWPORT COUNTYgraduated
    one grant, 2021 · $40k · revenue +150%
  • UA
    UVA Athletics Program
    one grant, 2021 · $25k
How this is measured

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

03Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. 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
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
3
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
4
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
5
Boston Architectural College

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

—
6
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
7
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
8
New York School of Interior Design

New york school of interior design provides the most innovative, immersive, and transformative interior design education in the world, demonstrating the impact of professionally designed interiors on the health, happiness, and well-being…

Education
9
Saint Anselm College

Saint anselm is a catholic, benedictine college providing all of its students a distinctive liberal arts education that incorporates opportunities for professional and career preparation. it does so in a learning community that encourages…

Education
10
Harvard Conservation Trust

To preserve the unique character and natural resources of harvard.

Environment
11
Wilson College

Wilson college empowers students to be confident and critical thinkers, creative visionaries, effective communicators, honorable leaders, and agents of justice.

Education
12
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
How this is measured
The grantee most central to the portfolio’s shape is The Preservation Society of Newport County; the most unlike its peers is The Everglades Foundation Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
03the grantee network

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

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 18 of the 32 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
1
Early backer (in before they grew)
18/18
Grantees still filing
14/18
Grew since first funded

Where the money sits, by cause and then by grantee

The Society of the Four Arts Inc: $640,000 · Arts & CultureThe Society of the Four Arts IncTHE PRESERVATION SOCIETY OF NEWPORT COUNTY: $40,000 · Arts & CultureTHE PRESERVATION SOCIETY OF NEWP…+4 more: $35,000 · Arts & CultureThe President & Trustee of Williams College: $300,000 · OtherThe President & Trustee of Wil…University of Virginia: $70,000 · OtherUniversity of VirginiaCanterbury School Operating Account: $50,000 · OtherCanterbury School Operating Ac…Trout Unlimited Inc.: $45,000 · OtherTrout Unlimited Inc.TROUT UNLIMITED: $30,000 · OtherUVA Athletics Program: $25,000 · OtherPreservation Society: $25,000 · OtherMount Sinai Hospital - Dubin Benefit: $25,000 · OtherUniversity of Virginia Fund: $25,000 · OtherVirginia Athletics Foundation: $25,000 · Other+4 more: $40,000 · Other+4 moreROBIN HOOD FOUNDATION: $460,000 · PhilanthropyROBIN HOOD FOUNDATIONWilliams College: $252,500 · EducationWilliams CollegeTHE CORPORATION OF MERCER UNIVERSITY: $60,000 · EducationTHE CORPORATION O…VIRGINIA STUDENT AID FOUNDATION INC: $25,000 · EducationVIRGINIA STUDENT …ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $20,000 · EducationSALVE REGINA UNIVERSITY: $20,000 · EducationNATIONAL PARKS CONSERVATION ASSOCIATION: $70,000 · EnvironmentTHE EVERGLADES FOUNDATION INC: $25,000 · EnvironmentDENVER BOTANIC GARDENS INC: $15,000 · EnvironmentNEW YORK YACHT CLUB FOUNDATION: $100,000 · Community ImprovementNATIONAL FISH AND WILDLIFE FOUNDATION: $25,000 · AnimalsROBERT POTTER LEAGUE FOR ANIMALS INC: $10,000 · Animals
Arts & Culture$715,000Other$660,000Philanthropy$460,000Education$377,500Environment$110,000Community Improvement$100,000Animals$35,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetThe Society of the Four Arts Inc: $640,000 over 1y, 1.4% of budgetROBIN HOOD FOUNDATION: $460,000 over 3y, 0.1% of budgetWilliams College: $252,500 over 2y, 0.0% of budgetNEW YORK YACHT CLUB FOUNDATION: $100,000 over 1y, 3.4% of budgetNATIONAL PARKS CONSERVATION ASSOCIATION: $70,000 over 2y, 0.1% of budgetTHE CORPORATION OF MERCER UNIVERSITY: $60,000 over 3y, 0.0% of budgetTHE PRESERVATION SOCIETY OF NEWPORT COUNTY: $40,000 over 1y, 0.2% of budgetVIRGINIA STUDENT AID FOUNDATION INC: $25,000 over 1y, 0.0% of budgetNATIONAL FISH AND WILDLIFE FOUNDATION: $25,000 over 1y, 0.0% of budgetTHE EVERGLADES FOUNDATION INC: $25,000 over 1y, 0.2% of budgetICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $20,000 over 1y, 0.0% of budgetSALVE REGINA UNIVERSITY: $20,000 over 1y, 0.0% of budgetDENVER BOTANIC GARDENS INC: $15,000 over 1y, 0.0% of budgetJAZZ HOUSE KIDS INC: $15,000 over 1y, 0.8% of budgetNATIONAL SAILING HALL OF FAME & MUSEUM INC: $10,000 over 1y, 0.8% of budgetROBERT POTTER LEAGUE FOR ANIMALS INC: $10,000 over 1y, 0.2% of budgetNEWPORT HISTORICAL SOCIETY: $5,000 over 1y, 0.2% of budgetNEWPORT FILM INC: $5,000 over 1y, 0.6% of budget
Grantee by grantee: a decade per organization, before and after funding

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

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Van Beuren Charitable…Hamilton Family Found…Gs Donor Advised Phil…National Philanthropi…Morgan Stanley Global…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
Van Beuren Charitable Foundation IncNY13.6× affinity4 shared granteesties to 7 of 7Hover any node to trace its alignments.Compare side by side →

Open a dossier: Van Beuren Charitable Foundation Inc · Hamilton Family Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · National Philanthropic Trust · Morgan Stanley Global Impact Funding Trust Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.
04Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to The Peter and Eaddo Kiernan Foundation?

Find your warmest path to The Peter and Eaddo Kiernan Foundation 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 from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 32 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its 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.

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

Possibly out of date. A more recent filing (FY2025) is on record and reports $1.1M of grant expense with no grantee named in the published copy. A private foundation itemizes every grant it makes, so a return carrying none has filed its list as an attachment that the public copy does not include. The figures above are therefore from FY2024, the most recent year this funder’s grantee list reached the public record.

Source object · view filing

Play a game based on Peter and Eaddo Kiernan’s filings →

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