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Piasecki Family Foundation at a glance

· Private foundation

Piasecki Family 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.

$90k
Granted FY2025still arriving
2
Grants FY2025still arriving
1
States reached
$80k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0191% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2025.

Arts & Culture$227kEducation$104kInternational$30kEnvironment$25kPhilanthropy$19kScience & Tech$5kReligion$4kOther$0
02FY2025 · 2 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • $10k–50k1 grant · $10k
  • $50k–250k1 grant · $80k
$80,000
Median grant
1
States reached
$1.9M
Total assets
Largest grants
RecipientAmount
PHILADELPHIA ORCHESTRA ASSOCIATION$80,000
UNIVERSITY OF PENNSYLVANIA$10,000
02The need
03

Does the money reach high-need areas?

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

show:

Dollar for dollar, its grants (FY19–25) land where the poverty rate runs at 18%, against an area that typically sits at 10%. 80% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%WEYERHAEUSER FAMILY FOUNDATION: $5k → 14%GLADWYNE MONTESSORI SCHOOL: $10k → 7%BRYN MAWR FILM INSTITUTE INC: $10k → 10%INDEPENDENCE MISSION SCHOOLS: $4k → 22%VASSAR COLLEGE: $3k → 9%MISS PORTER'S SCHOOL: $3k → 11%FOREST HISTORY SOCIETY: $10k → 11%SUSTAINABLE SEATTLE: $10k → 9%WORLD BICYCLE RELIEF: $10k → 14%WEYERHAEUSER FAMILY FOUNDATION: $5k → 14%GLADWYNE MONTESSORI SCHOOL: $10k → 7%BRYN MAWR FILM INSTITUTE INC: $10k → 10%INDEPENDENCE MISSION SCHOOLS: $1k → 22%VASSAR COLLEGE: $2k → 9%MISS PORTER'S SCHOOL: $1k → 11%FOREST HISTORY SOCIETY: $4k → 11%WORLD BICYCLE RELIEF: $10k → 14%WEYERHAEUSER FAMILY FOUNDATION: $5k → 14%GLADWYNE MONTESSORI SCHOOL: $10k → 7%BRYN MAWR FILM INSTITUTE INC: $10k → 10%UNIVERSITY OF PENNSYLVANIA: $10k → 22%WORLD BICYCLE RELIEF: $10k → 14%WEYERHAEUSER FAMILY FOUNDATION: $3k → 14%GLADWYNE MONTESSORI SCHOOL: $5k → 7%BRYN MAWR FILM INSTITUTE INC: $5k → 10%UNIVERSITY OF PENNSYLVANIA: $10k → 22%ST JOHN NEUMANN CHURCH: $2k → 10%UNIVERSITY OF PENNSYLVANIA: $10k → 22%UNIVERSITY OF PENNSYLVANIA: $10k → 22%UNIVERSITY OF PENNSYLVANIA: $10k → 22%VILLANOVA UNIVERSITY OFFICE FOR MISSION & MINISTRY: $5k → 10%PHILADELPHIA ORCHESTRA ASSOCIATION: $80k → 22%PHILADELPHIA ORCHESTRA ASSOCIATION: $50k → 22%PHILADELPHIA ORCHESTRA ASSOCIATION: $10k → 22%PHILADELPHIA ORCHESTRA ASSOCIATION: $10k → 22%PHILADELPHIA ORCHESTRA ASSOCIATION: $10k → 22%PHILADELPHIA ORCHESTRA ASSOCIATION: $6k → 22%WHYY PUBLIC TELEVISION: $17k → 22%WHYY PUBLIC TELEVISION: $15k → 22%WHYY PUBLIC TELEVISION: $10k → 22%WHYY PUBLIC TELEVISION: $10k → 22%NATIONAL CONSTITUTION CENTER: $8k → 22%NATIONAL CONSTITUTION CENTER: $5k → 22%WHYY PUBLIC TELEVISION: $5k → 22%SCIENCE HISTORY INSTITUTE: $5k → 22%NATIONAL CONSTITUTION CENTER: $5k → 22%NATIONAL CONSTITUTION CENTER: $5k → 22%NATIONAL CONSTITUTION CENTER: $3k → 22%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

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

95%of every dollar goes to organizations it has funded before.
$400k · 12 repeat orgs$20k to everyone else

12 repeat relationships: 1 still active in FY2025, 11 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

12
3

Total granted

$400k
$20k

Median revenue growth · since first grant

+18%
+19%

Still filing today

83%
100%

New vs renewed · share of each year

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

50%100%’19’20’21’22’23’24’25
RenewedFirst-time

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

’19’20’21’22’23’24’25
Arts & CultureEducationEnvironmentPublic Safety & DisasterScience & TechOther
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

  • BM
    BRYN MAWR THEATRE FILM INSTITUTE
    4× · 2021–2024 · $35k · revenue +5%
  • TG
    THE GLADWYNE MONTESSORI SCHOOL
    4× · 2021–2024 · $35k · revenue +126%
  • WORLD BICYCLE RELIEF NFP
    3× · 2022–2024 · $30k · revenue +17%

Funded once

  • SS
    SUSTAINABLE SEATTLE
    one grant, 2022 · $10k · revenue +9%
  • SH
    SCIENCE HISTORY INSTITUTE
    one grant, 2022 · $5k · revenue +20%
  • VU
    VILLANOVA UNIVERSITY
    one grant, 2023 · $5k · revenue +19%
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.

04Its 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
Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation

The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.

Science & Tech
2
Wilson College

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

Education
3
The Public School of Germantown

Germantown academy inspires students to be independent in thought; confident in expression; compassionate in spirit; collaborative in action; and honorable in deed. germantown academy is a private school educating students from pre-k…

Education
4
Boston Architectural College

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

—
5
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
6
Albright College

As a diverse community of learners, we cultivate integrity, curiosity, connection and resilience.

Education
7
Manhattanville University

To educate students to be ethical and socially responsible leaders in a global community.

Education
8
Virginia Wesleyan University

Virginia wesleyan university is a fully accredited liberal arts, united-methodist related institution founded in 1961.

—
9
Dickinson College

Dickinson college provides a useful, innovative and interdisciplinary education in the liberal arts and sciences to prepare students to lead rich and fulfilling lives of engaged global citizenship

Education
10
President and Fellows of Harvard College

Undergraduate, graduate, and professional education and research across a broad array of academic domains.

Education
11
Lehigh University

The university's goal in the coming decade is to advance learning through the integration of teaching, research and service to others. the core of this goal is to prepare graduates to engage with the world and lead lives of meaning. to do…

Education
12
The Philadelphia School

The philadelphia school educates children for a future that is impossible to know but not impossible to shape. learn here. go anywhere.

—
How this is measured
The grantee most central to the portfolio’s shape is Science History Institute; the most unlike its peers is Weyerhaeuser Family Foundationinc. 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

14 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. 14 of the 16 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)
14/14
Grantees still filing
11/14
Grew since first funded

Where the money sits, by cause and then by grantee

PHILADELPHIA ORCHESTRA ASSOCIATION: $166,000 · Arts & CulturePHILADELPHIA ORCHESTRA ASSOCIATIONBRYN MAWR THEATRE FILM INSTITUTE: $35,020 · Arts & CultureBRYN MAWR THEATRE FILM INSTITUTENATIONAL CONSTITUTION CENTER: $26,333 · Arts & CultureNATIONAL CONSTITUTION CENTERIndividual grant recipient: $57,000 · OtherIndividual grant recipientTHE GLADWYNE MONTESSORI SCHOOL: $35,000 · OtherTHE GLADWYNE MONTESSORI SCHO…WEYERHAEUSER FAMILY FOUNDATIONINC: $19,000 · OtherWEYERHAEUSER FAMILY FOUNDATI…VASSAR COLLEGE: $5,500 · Other+1 more: $3,500 · OtherTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $50,000 · EducationTRUSTEES OF THE…VILLANOVA UNIVERSITY: $5,000 · EducationVILLANOVA UNIVE…INDEPENDENCE MISSION SCHOOLS: $4,500 · EducationINDEPENDENCE MI…MISS PORTER'S SCHOOL INC: $3,500 · EducationMISS PORTER'S S…WORLD BICYCLE RELIEF NFP: $30,000 · Public Safety & DisasterFOREST HISTORY SOCIETY INC: $15,000 · EnvironmentSUSTAINABLE SEATTLE: $10,000 · EnvironmentSCIENCE HISTORY INSTITUTE: $5,000 · Science & Tech
Arts & Culture$227,353Other$120,000Education$63,000Public Safety & Disaster$30,000Environment$25,000Science & Tech$5,000

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

25%50%75%100%$10M$100Mgrantee revenue →↑ funder's share of their budgetPHILADELPHIA ORCHESTRA ASSOCIATION: $166,000 over 6y, 0.1% of budgetTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $50,000 over 5y, 0.0% of budgetBRYN MAWR THEATRE FILM INSTITUTE: $35,020 over 4y, 0.4% of budgetTHE GLADWYNE MONTESSORI SCHOOL: $35,000 over 4y, 0.2% of budgetWORLD BICYCLE RELIEF NFP: $30,000 over 3y, 0.1% of budgetNATIONAL CONSTITUTION CENTER: $26,333 over 5y, 0.0% of budgetWEYERHAEUSER FAMILY FOUNDATIONINC: $19,000 over 4y, 0.3% of budgetFOREST HISTORY SOCIETY INC: $15,000 over 4y, 0.4% of budgetSUSTAINABLE SEATTLE: $10,000 over 1y, 0.8% of budgetVASSAR COLLEGE: $5,500 over 3y, 0.0% of budgetSCIENCE HISTORY INSTITUTE: $5,000 over 1y, 0.1% of budgetVILLANOVA UNIVERSITY: $5,000 over 1y, 0.0% of budgetINDEPENDENCE MISSION SCHOOLS: $4,500 over 2y, 0.0% of budgetMISS PORTER'S SCHOOL INC: $3,500 over 2y, 0.0% 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.

Fidelity Investments …Donor Advised Charita…Amazonsmile Foundation
Fidelity Investments Charitable Gift FundMA5.5× affinity6 shared granteesties to 2 of 2Hover any node to trace its alignments.Compare side by side →

Open a dossier: Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc · 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.

How much its grantees rely on government

Each dot is one organization Piasecki Family Foundation funds: left to right is the share of its income from government, bottom to top the share from Piasecki Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%0%1%3%5%funder's share of their income ↑0%4%8%11%15%share of the org’s income from government →
    no gov moneyreceives it· size = income
    1get no government money at all
    4report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–15%
    typical government reliance, FY20–25
    How this is measured
    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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.
    05Through Plinth

    Warm introductions · Powered by PlinthPlus

    How do I get to Piasecki Family Foundation?

    Find your warmest path to Piasecki Family 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 16 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 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Source object · view filing

    Play a game based on Piasecki Family’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