Skip to content
Plinth
Foundation Dossiers
Plinth

· Private foundation

J J Medveckis 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.

$140k
Granted FY2025still arriving
9
Grants FY2025still arriving
2
States reached
$92k
Largest
01What you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
05Through PlinthRead
01What you fund
0197% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.

Arts & Culture$954kEducation$133kInternational$59kPhilanthropy$22kHealth$8kFood & Nutrition$7kCivil Rights$7kSocial Science$2kOther$0
02FY2025 · 9 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k7 grants · $31k
  • $10k–50k1 grant · $18k
  • $50k–250k1 grant · $92k
$5,000
Median grant
2
States reached
$47k
Total assets
Largest grants
RecipientAmount
CURTIS INSTITUTE OF MUSIC$91,500
PHILADELPHIA MUSEUM OF ART$17,500
PENNSYLVANIA HORTICULTURAL SOCIETY$7,200
INDEPENDENCE HISTORICAL TRUST$5,000
FOREIGN POLICY RESEARCH INSTITUTE$5,000
AMERICAN FRIENDS OF LATVIA NATIONAL MUSEUM$5,000
AMERICAN PHILOSOPHICAL SOCIETY$4,000
UNIVERSITY OF ARIZONA FOUNDATION$3,000
Individual grant recipient$2,000
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 (FY17–25) land where the poverty rate runs at 20%, against an area that typically sits at 10%. 97% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 10%MAYO CLINIC: $5k → 9%TEMPLE UNIVERSITY: $45k → 22%AMERICAN ACADEMY IN ROME: $5k → 17%THE FUND FOR THE ENDOWMENT OF THE DIPLOMATIC RECEPTION ROOMS OF THE DEPARTM: $25k → 14%THE RUBICON FOUNDATION: $5k → 16%AMERICAN LATVIAN ASSOCIATION: $5k → 8%PHILADELPHIA MUSEUM OF ART: $133k → 22%AMERICAN FRIENDS OF BRITISH ARCH LIBRARY: $5k → 17%PHILADELPHIA MUSEUM OF ART: $128k → 22%LIBRARY OF CONGRESS: $44k → 14%FUND FOR THE ENDOWMENT OF DIPLOMATIC RECEPTION ROOMS OF DEPT OF STATE: $10k → 8%PHILADELPHIA MUSEUM OF ART: $48k → 22%LIBRARY OF CONGRESS: $38k → 14%PHILADELPHIA MUSEUM OF ART: $30k → 22%METROPOLITAN MUSEUM OF ART: $50k → 17%NATIONAL GALLERY OF ART: $5k → 14%PHILADELPHIA MUSEUM OF ART: $18k → 22%THE METROPOLITAN MUSEUM OF ART: $10k → 17%NATIONAL GALLERY OF ART: $5k → 14%PHILADELPHIA MUSEUM OF ART: $18k → 22%METROPOLITAN MUSEUM OF ART: $10k → 17%The Barnes Foundation: $10k → 22%metropolitan museum of art: $10k → 17%THE BARNES FOUNDATION: $5k → 22%METROPOLITAN MUSEUM OF ART: $10k → 17%PHILADELPHIA MUSEUM OF ART: $5k → 22%CURTIS INSTITUTE OF MUSIC: $92k → 22%CURTIS INSTITUTE OF MUSIC: $37k → 22%FOREIGN POLICY RESEARCH institute: $20k → 22%CURTIS INSTITUTE OF MUSIC: $25k → 22%EISENHOWER FELLOWSHIPS: $6k → 22%CURTIS INSTITUTE OF MUSIC: $23k → 22%FOREIGN POLICY RESEARCH INSTITUTE: $5k → 22%AMERICAN FRIENDS OF LATVIA NATIONAL MUSEUM: $20k → 22%FOREIGN POLICY RESEARCH INSTITUTE: $5k → 22%CURTIS INSTITUTE OF MUSIC: $15k → 22%FOREIGN POLICY RESEARCH INSTITUTE: $5k → 22%PENNSYLVANIA HORTICULTURAL SOCIETY: $7k → 22%TRUSTEES UNIVERSITY OF PENNSYLVANIA: $30k → 22%UNIVERSITY OF PENNSYLVANIA museum: $10k → 22%TRUSTEES UNIVERSITY OF PENNSYLVANIA: $10k → 22%UNIVERSITY OF PENNSYLVANIA MUSEUM: $10k → 22%TRUSTEES UNIVERSITY OF PENNSYLVANIA: $10k → 22%TRUSTEES UNIVERSITY OF PENNSYLVANIA: $10k → 22%TRUSTEES UNIVERSITY OF PENNSYLVANIA: $10k → 22%MUSEUM OF THE AMERICAN REVOLUTION: $26k → 22%INDEPENDENCE HISTORICAL TRUST: $10k → 22%museum of the american revolution: $6k → 22%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.

Which US states your grants reach

MN
NY
OH
PA
VA
MD
AZ
DC
TX

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.

90%of every dollar goes to organizations you’ve funded before.
$1.0M · 22 repeat orgs$117k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +21% since the first grant, against 0% for the ones you funded once.

22 repeat relationships — 6 still active in FY2025, 16 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

22
23

Total granted

$1.0M
$104k

Median revenue growth · since first grant

+21%
0%

Still filing today

77%
61%

New vs renewed · share of each year

In FY2025, 91% of grant dollars renewed an existing relationship; $13k went to new ones.

50%100%’17’18’19’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’21’22’23’24’25
Arts & CultureInternationalEducationPhilanthropySocial ScienceEnvironmentOther

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

  • PM
    PHILADELPHIA MUSEUM OF ART
    7× · 2017–2025 · $378k · revenue +14%
  • CI
    CURTIS INSTITUTE OF MUSIC
    6× · 2017–2025 · $197k · revenue +62%
  • MM
    METROPOLITAN MUSEUM OF ART
    5× · 2017–2024 · $90k · revenue +58%

Funded once

  • TU
    Temple University - Of The Commonwealth System of Higher Education
    one grant, 2022 · $45k · revenue +13%
  • XL
    XIV Latvian Song and Dance Festival Inc
    one grant, 2017 · $10k · revenue -100%
  • EE
    Eisenhower Exchange Fellowships Incorporated
    one grant, 2024 · $6k · revenue 0%

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
The Pierpont Morgan Library

The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.

Education
2
The Phillips Collection

The phillips collection is the oldest museum of modern and contemporary art in the u.s. in addition to presentation of works from the permanent collection and special exhibitions, the museum maintains active educational, academic,…

Arts & Culture
3
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
4
Berggruen Institute
Education
5
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
6
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
7
Boston Architectural College

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

—
8
The Frick Collection

The Frick Collection (the "Collection") operates an internationally recognized art museum and library program for the inspiration and enjoyment of the public and for the advancement of the study of fine arts and kindred subjects.

—
9
The Brooklyn Institute of Arts and Sciences

The mission of the brooklyn institute of arts and sciences, d/b/a brooklyn museum (the "museum") is to bring people together through art and experiences that inspire celebration, compassion, courage, and the will to act. (see schedule o).

Arts & Culture
10
Henry E Huntington Library and Art Gallery

The huntington library, art museum, and botanical gardens shares its world-renowned collections to support scholarship, foster learning, inspire creativity, and offer transformative experiences for diverse audiences.

Arts & Culture
11
American Academy of Arts & Sciences

Founded in 1780, the american academy of arts and sciences honors excellence and convenes leaders from every field of human endeavor to examine new ideas, address issues of importance to the nation and the world, and work together "to…

Social Science
12
The Asia Society

The society is an international nonprofit, nonpartisan organization which connects people and institutions in asia and the world to build understanding, address challenges and maximize opportunities.

International

For reference, the grantee most central to the portfolio’s shape is American Academy in Rome and the most unlike its peers is Andalusia Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.

← shrinkinggrowing →↓ leaning in → pulling backsteadyClassical Music EnsemblesFaith-Based Liberal Arts Co…Land Conservation Organizat…Public University Foundatio…Jewish Community FederationsGovernment Accountability R…Community Health CentersCommunity Arts Organizations
the sector your giving your giving is ahead of the sector the sector’s ahead of you· dot size = how much the theme matters to each side
Ordered by the change in your giving — leaning in on top, pulling back at the bottom. The bar between the two dots is how out of step you are with the sector. Hover any row for detail.

Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.

Your grantees are a median of 64 years old; the field is 19. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number18%3%<5yr13%0%5–10yr19%6%10–20yr17%18%20–35yr15%15%35–55yr17%59%55yr+
THE FIELDby orgYOUR MONEYby value18%1%<5yr13%0%5–10yr19%1%10–20yr17%24%20–35yr15%9%35–55yr17%66%55yr+

The field is 18% startups (under 5 years old) — 3% of your grantees by number, and just 1% of your money.

Closures · last 5 years

The orgs you fund almost never close — 0.0% lost their exemption, against 9% of the field you don’t fund.

orgs you fund
0.0%0/38
the rest of the field
9%
7,129/78,124

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

04the grantee network

37 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 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 37 of the 50 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)
3
Early backer (in before they grew)
35/37
Grantees still filing
21/37
Grew since you first funded

Where your money sits — by cause, then by grantee

PHILADELPHIA MUSEUM OF ART — $377,500 · Arts & CulturePHILADELPHIA MUSEUM OF ARTCURTIS INSTITUTE OF MUSIC — $196,700 · Arts & CultureCURTIS INSTITUTE OF MUSICMETROPOLITAN MUSEUM OF ART — $90,000 · Arts & CultureMETROPOLITAN MUSEUM OF ARTFUND FOR THE ENDOWMENT OF THE DIPLOMATIC RECEPTION ROOMS OF THE DEPT OF STATE — $38,000 · Arts & CultureMUSEUM OF THE AMERICAN REVOLUTION — $32,052 · Arts & Culture+10 more — $44,000 · Arts & Culture+10 moreFRIENDS OF THE LIBRARY OF CONGRESS — $82,700 · OtherFRIENDS OF THE LI…AMERICAN FRIENDS OF LATVIA NATIONAL MUSEUM — $25,000 · OtherAMERICAN FRIENDS …UNIVERSITY OF PENNSYLVANIA museum — $20,000 · OtherUNIVERSITY OF PEN…INDEPENDENCE HISTORICAL TRUST — $15,000 · OtherINDEPENDENCE HIST…XIV Latvian Song and Dance Festival Inc — $10,000 · OtherXIV Latvian Song …AMERICAN LATVIAN ASSOCIATION — $7,000 · Other+12 more — $25,500 · Other+12 moreTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA — $70,000 · EducationTRUSTEES OF …Temple University - Of The Commonwealth System of Higher Education — $45,000 · EducationTemple Unive…University of Arizona Foundation — $7,500 · EducationUniversity o…+3 more — $7,500 · Education+3 moreFOREIGN POLICY RESEARCH INSTITUTE — $40,000 · InternationalAMERICAN ACADEMY IN ROME — $7,000 · InternationalEisenhower Exchange Fellowships Incorporated — $6,000 · InternationalWORLD AFFAIRS COUNCIL OF PITTSBURGH — $6,000 · International+1 more — $2,000 · InternationalTHE LENFEST INSTITUTE FOR JOURNALISM SPECIAL ASSET FUND OF TPF — $15,000 · PhilanthropyTHE EAGLES CHARITABLE FOUNDATION INC — $10,000 · PhilanthropyTHE RUBICON FOUNDATION — $5,000 · PhilanthropyTHE PENNSYLVANIA HORTICULTURAL SOCIETY — $7,200 · EnvironmentMAYO CLINIC — $5,000 · HealthAMERICAN RESEARCH CENTER IN EGYPT INC — $2,000 · Social Science
Arts & Culture$778,252Other$185,200Education$130,000International$61,000Philanthropy$30,000Environment$7,200Health$5,000Social Science$2,000

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetPHILADELPHIA MUSEUM OF ART — $377,500 over 7y, 0.2% of budgetCURTIS INSTITUTE OF MUSIC — $196,700 over 6y, 0.2% of budgetMETROPOLITAN MUSEUM OF ART — $90,000 over 5y, 0.0% of budgetTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA — $70,000 over 5y, 0.0% of budgetTemple University - Of The Commonwealth System of Higher Education — $45,000 over 1y, 0.0% of budgetFOREIGN POLICY RESEARCH INSTITUTE — $40,000 over 5y, 0.8% of budgetFUND FOR THE ENDOWMENT OF THE DIPLOMATIC RECEPTION ROOMS OF THE DEPT OF STATE — $38,000 over 5y, 2.6% of budgetMUSEUM OF THE AMERICAN REVOLUTION — $32,052 over 2y, 0.2% of budgetTHE LENFEST INSTITUTE FOR JOURNALISM SPECIAL ASSET FUND OF TPF — $15,000 over 4y, 0.0% of budgetINDEPENDENCE HISTORICAL TRUST — $15,000 over 2y, 0.3% of budgetTHE BARNES FOUNDATION — $15,000 over 2y, 0.0% of budgetXIV Latvian Song and Dance Festival Inc — $10,000 over 1y, 2.3% of budgetNational Gallery of Art — $10,000 over 2y, 0.0% of budgetTHE EAGLES CHARITABLE FOUNDATION INC — $10,000 over 2y, 0.2% of budgetUniversity of Arizona Foundation — $7,500 over 3y, 0.0% of budgetTHE PENNSYLVANIA HORTICULTURAL SOCIETY — $7,200 over 1y, 0.0% of budgetAMERICAN ACADEMY IN ROME — $7,000 over 2y, 0.0% of budgetEisenhower Exchange Fellowships Incorporated — $6,000 over 1y, 0.1% of budgetWORLD AFFAIRS COUNCIL OF PITTSBURGH — $6,000 over 2y, 0.4% of budgetBRITISH ARCHITECTURAL LIBRARY TRUST INC — $5,000 over 1y, 9.2% of budgetROYAL SHAKESPEARE COMPANY AMERICA INC — $5,000 over 1y, 0.4% of budgetHistorical Society of Pennsylvania — $5,000 over 2y, 0.1% of budgetMAYO CLINIC — $5,000 over 1y, 0.0% of budgetTHE AMERICAN UNIVERSITY OF ROME — $4,000 over 2y, 0.0% of budgetDREXEL UNIVERSITY — $2,500 over 1y, 0.0% of budgetANDALUSIA FOUNDATION — $2,500 over 1y, 0.2% of budgetAMERICAN FRIENDS OF REICHMAN UNIVERSITY INC — $2,000 over 1y, 0.0% of budgetAMERICAN RESEARCH CENTER IN EGYPT INC — $2,000 over 1y, 0.1% of budgetTHE COLLEGE OF PHYSICIANS OF PHILADELPHIA — $2,000 over 1y, 0.0% of budgetTHE ATHENAEUM OF PHILADELPHIA — $1,000 over 2y, 0.0% of budgetBrandywine Conservancy & Museum of Art — $1,000 over 1y, 0.0% of budgetSIR JOHN SOANE'S MUSEUM FOUNDATION — $1,000 over 1y, 0.1% of budgetRoyal Academy America Inc — $1,000 over 1y, 0.0% of budgetWHYY INC — $1,000 over 1y, 0.0% of budgetCARPENTERS' COMPANY OF THE CITY AND COUNTY OF PHILADELPHIA — $1,000 over 1y, 0.1% 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.

The William Penn Foun…The Philadelphia Foun…Connelly FoundationHamilton Family Found…The Philadelphia Cult…The Snider FoundationNational Philanthropi…Vanguard Charitable E…Gs Donor Advised Phil…Renaissance Charitabl…Morgan Stanley Global…Donor Advised Charita…
The William Penn FoundationPA21.1× affinity8 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The William Penn Foundation · The Philadelphia Foundation · Connelly Foundation · Hamilton Family Foundation · The Philadelphia Cultural Fund Inc · The Snider Foundation · National Philanthropic Trust · Vanguard Charitable Endowment Program · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Renaissance Charitable Foundation Inc · Morgan Stanley Global Impact Funding Trust Inc · Donor Advised Charitable Giving Inc

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 J J Medveckis 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 or a single department — and drag the year to watch it move.

2024
’20’21’22’23’24’25
no gov · 00%0%1%3%5%your share of their income ↑0%25%50%75%100%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    7report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    typical government reliance, FY20–25

    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 J J Medveckis Foundation?

    Find your warmest path to J J Medveckis 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 directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 50 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

    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 camps
    funders cluster by geography, not ideology
    By state
    where grant money is based, and what stays home
    State money flows
    the interactive map of money crossing state lines