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Plinth

· Private foundation

William J Siegel and Sally R Siegel Foundation Ltd

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.

$99k
Granted FY2025still arriving
12
Grants FY2025still arriving
5
States reached
$15k
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 FY20172025.

Arts & Culture$304kHealth$108kInternational$108kEducation$75kScience & Tech$62kCivil Rights$46kReligion$44kPublic Safety & Disaster$17kOther$0
02FY2025 · 12 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k9 grants · $64k
  • $10k–50k3 grants · $35k
$8,000
Median grant
5
States reached
$2.4M
Total assets
Largest grants
RecipientAmount
SMITHSONIAN INSTITUTION$15,000
PLANNED PARENTHOOD FEDERATION OF AMERICA INC$10,000
FIOS FEMINISTA (INT'L PLANNED PARENTHOOD FED WESTERN HEMISPHERE REGION)$10,000
SIMON WIESENTHAL CENTERMUSEUM OF TOLERANCE$9,000
UNITED STATES HOLOCAUST MEMORIAL MUSEUM$8,500
AMERICAN TECHNION SOCIETY$8,000
WAMU AMERICAN UNIVERSITY$7,500
ANTI-DEFAMATION LEAGUE OF B'NAI B'RITH$7,500
HILLEL INTERNATIONAL$6,500
THE JEWISH FEDERATION OF GREATER WASHINGTON$6,000
JEWBELONG$6,000
MANDEL JCC OF THE PALM BEACHES$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 (FY17–25) land where the poverty rate runs at 15%, against an area that typically sits at 10%. 98% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 10%SIMON WIESENTHAL CENTERMUSEUM OF TOLERANCE: $9k → 14%JEWBELONG: $6k → 17%UNITED STATES HOLOCAUST MEMORIAL MUSEUM: $9k → 14%THE LIGHTHOUSE ART CENTER: $15k → 10%MANDEL JCC OF THE PALM BEACHES: $6k → 11%SOUTHERN POVERTY LAW CENTER: $10k → 18%THE JEWISH FEDERATION OF GREATER WASHINGTON: $6k → 8%SIMON WIESENTHAL CENTERMUSEUM OF TOLERANCE: $8k → 14%UNITED STATES HOLOCAUST MEMORIAL MUSEUM: $9k → 14%THE LIGHTHOUSE ART CENTER: $15k → 10%SIMON WIESENTHAL CENTERMUSEUM OF TOLERANCE: $7k → 14%INTERNATIONAL PLANNED PARENTHOOD FEDERATION: $16k → 17%UNITED STATES HOLOCAUST MEMORIAL MUSEUM: $7k → 14%THE LIGHTHOUSE ART CENTER: $13k → 10%SIMON WIESENTHAL CENTERMUSEUM OF TOLERANCE: $7k → 14%PLANNED PARENTHOOD FEDERATION OF AMERICA INC: $16k → 17%UNITED STATES HOLOCAUST MEMORIAL MUSEUM: $6k → 14%THE LIGHTHOUSE ART CENTER: $10k → 10%SIMON WIESENTHAL CENTERMUSEUM OF TOLERANCE: $7k → 14%PLANNED PARENTHOOD FEDERATION OF AMERICA INC: $16k → 17%THE LIGHTHOUSE ART CENTER: $10k → 10%INTERNATIONAL PLANNED PARENTHOOD FEDERATION: $16k → 17%THE LIGHTHOUSE ART CENTER: $10k → 10%INTERNATIONAL PLANNED PARENTHOOD FEDERATION: $14k → 17%PLANNED PARENTHOOD FEDERATION OF AMERICA INC: $14k → 17%INTERNATIONAL PLANNED PARENTHOOD FEDERATION: $14k → 17%FIOS FEMINISTA (INT'L PLANNED PARENTHOOD FED WESTERN HEMISPHERE REGION): $10k → 17%WAMU AMERICAN UNIVERSITY: $8k → 14%FIOS FEMINISTA (INT'L PLANNED PARENTHOOD FED WESTERN HEMISPHERE REGION): $10k → 17%WAMU AMERICAN UNIVERSITY: $8k → 14%PLANNED PARENTHOOD FEDERATION OF AMERICA INC: $10k → 17%INTERNATIONAL PLANNED PARENTHOOD FEDERATION: $10k → 17%FIOS FEMINISTA (INT'L PLANNED PARENTHOOD FED WESTERN HEMISPHERE REGION): $10k → 17%PLANNED PARENTHOOD FEDERATION OF AMERICA INC: $10k → 17%PLANNED PARENTHOOD FEDERATION OF AMERICA INC: $10k → 17%INTERNATIONAL PLANNED PARENTHOOD FEDERATION: $9k → 17%AMERICAN TECHNION SOCIETY: $8k → 17%AMERICAN TECHNION SOCIETY: $8k → 17%WORLD CENTRAL KITCHEN INC: $10k → 14%AMERICAN TECHNION SOCIETY: $8k → 17%WORLD CENTRAL KITCHEN INC: $7k → 14%AMERICAN TECHNION SOCIETY: $8k → 17%AMERICAN TECHNION SOCIETY: $7k → 17%AMERICAN TECHNION SOCIETY: $7k → 17%AMERICAN TECHNION SOCIETY: $7k → 17%PLANNED PARENTHOOD FEDERATION OF AMERICA INC: $14k → 17%PLANNED PARENTHOOD FEDERATION OF AMERICA INC: $10k → 17%PLANNED PARENTHOOD FEDERATION OF AMERICA INC: $9k → 17%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.

99%of every dollar goes to organizations you’ve funded before.
$692k · 14 repeat orgs$8k to everyone else

14 repeat relationships — 10 still active in FY2025, 4 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

14
2

Total granted

$692k
$8k

Median revenue growth · since first grant

+12%
+29%

Still filing today

79%
50%

New vs renewed · share of each year

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

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
Arts & CultureReligionInternationalHealthCrime & LegalCivil RightsOther

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

  • INTERNATIONAL PLANNED PARENTHOOD FEDERATION WESTERN HEMISPHERE REGION
    9× · 2017–2025 · $108k · revenue +39%
  • PLANNED PARENTHOOD FEDERATION OF AMERICA INC
    9× · 2017–2025 · $108k · revenue +12%
  • SMITHSONIAN INSTITUTION
    9× · 2017–2025 · $98k · revenue +34%

Funded once

  • AL
    ANTI-DEFAMATION LEAGUE OF B'NAI B'RITH
    one grant, 2017 · $6k
  • TA
    THE ARMORY ART CENTER INCgraduated
    one grant, 2017 · $2k · revenue +29%

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 Jewish Museum

The mission of the jewish museum is to collect, preserve, exhibit and interpret art and jewish culture. see schedule o for more information.

Arts & Culture
2
Weitzman National Museum of American Jewish History

The weitzman national museum of american jewish history, on independence mall in philadelphia, presents educational programs and experiences that preserve, explore, and celebrate the history of jews in america. its purpose is to connect…

Arts & Culture
3
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
4
Yeshiva University

The university is composed of several colleges and schools providing undergraduate, graduate, professional and post-doctoral education and training and research and clinical programs.

Education
5
Us Middle East Project Inc

The organization's mission is to engage in non partisan analysis of u.s. foreign policy in the middle east, with special emphasis on the middle east peace process, and to present policymakers in the united states, in the region and in the…

International
6
Shalom School

Shalom school's mission is to provide each child with an outstanding education in a nurturing environment that is academically excellent, inclusive, innovative, and inspired by jewish values and traditions.

7
T of L Inc

The tree of life is a 501(c)(3) nonprofit organization based in pittsburgh, pennsylvania. our mission is to uproot antisemitism by preserving the memory of those lost on october 27, 2018-the deadliest antisemitic attack in u.s. history-and…

Arts & Culture
8
The Adler Planetarium

The adler planetarium ('adler') is a not-for-profit cultural institution whose mission is to connect people to the universe and each other under the sky we all share. it aspires to be the world's premier center for engaging in astronomy…

Arts & Culture
9
Philadelphia Jewish Film and Media

Philadelphia jewish film and medias mission is to educate and engage diverse philadelphia communities, jewish and non-jewish alike, by presenting world-class film premieres, repertory cinema, and associated programs that are inspired by…

Human Services
10
Bar Ilan University in Israel Inc

Biu produces students who excel in the sciences, humanities, law, engineering, business & the arts.

11
Auschwitz Institute for the Prevention of Genocide and Mass Atrocities

The auschwitz institute for the prevention of genocide and mass atrocities is dedicated to building a world that prevents genocide. we aim to see every state effectively integrate within government the domestically developed function of…

International
12
The Young Men's and Young Women's Hebrew Association

For over 150 years, the 92nd street y, new york has been serving its communities and the larger world by bringing people together (continued on schedule o)and providing exceptional, groundbreaking programs in the performing and visual…

Religion

For reference, the grantee most central to the portfolio’s shape is Anti-Defamation League and the most unlike its peers is Smithsonian Institution. 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 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. 14 of the 18 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)
1
Early backer (in before they grew)
14/14
Grantees still filing
12/14
Grew since you first funded

Where your money sits — by cause, then by grantee

SMITHSONIAN INSTITUTION — $97,500 · Arts & CultureSMITHSONIAN INSTITUTIONLIGHTHOUSE ARTCENTER INC — $82,500 · Arts & CultureLIGHTHOUSE ARTCENTER INCThe United States Holocaust Memorial Museum — $60,000 · Arts & CultureThe United States Holocaust Memoria…+1 more — $2,000 · Arts & CultureINTERNATIONAL PLANNED PARENTHOOD FEDERATION WESTERN HEMISPHERE REGION — $107,500 · InternationalINTERNATIONAL PLANNED PAREN…AMERICAN SOCIETY FOR TECHNION ISRAEL INSTITUTE OF TECHNOLOGY INC — $62,000 · InternationalAMERICAN SOCIETY FOR TECHNI…WORLD CENTRAL KITCHEN INC — $17,000 · InternationalWORLD CENTRAL KITCHEN INCSIMON WIESENTHAL CENTERMUSEUM OF TOLERANCE — $62,000 · OtherSIMON WIESENTHAL CEN…WAMU AMERICAN UNIVERSITY — $50,000 · OtherWAMU AMERICAN UNIVER…MANDEL JCC PALM BEACH GARDENS — $24,500 · OtherMANDEL JCC PALM BEAC…ANTI-DEFAMATION LEAGUE OF B'NAI B'RITH — $6,000 · OtherPLANNED PARENTHOOD FEDERATION OF AMERICA INC — $107,500 · HealthPLANNED PARENTH…MANDEL JEWISH COMMUNITY CENTER OF THE PALM BEACHES INC — $20,000 · ReligionJEWBELONG INC — $13,500 · ReligionHILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE — $10,500 · ReligionSOUTHERN POVERTY LAW CENTER INC — $20,000 · Crime & LegalANTI-DEFAMATION LEAGUE — $19,500 · Civil RightsTHE JEWISH FEDERATION OF GREATER WASHINGTON INC — $10,000 · Philanthropy
Arts & Culture$242,000International$186,500Other$142,500Health$107,500Religion$44,000Crime & Legal$20,000Civil Rights$19,500Philanthropy$10,000

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 budgetINTERNATIONAL PLANNED PARENTHOOD FEDERATION WESTERN HEMISPHERE REGION — $107,500 over 9y, 0.1% of budgetPLANNED PARENTHOOD FEDERATION OF AMERICA INC — $107,500 over 9y, 0.0% of budgetSMITHSONIAN INSTITUTION — $97,500 over 9y, 0.0% of budgetLIGHTHOUSE ARTCENTER INC — $82,500 over 8y, 0.8% of budgetAMERICAN SOCIETY FOR TECHNION ISRAEL INSTITUTE OF TECHNOLOGY INC — $62,000 over 9y, 0.0% of budgetThe United States Holocaust Memorial Museum — $60,000 over 9y, 0.0% of budgetMANDEL JEWISH COMMUNITY CENTER OF THE PALM BEACHES INC — $20,000 over 4y, 0.0% of budgetSOUTHERN POVERTY LAW CENTER INC — $20,000 over 3y, 0.0% of budgetANTI-DEFAMATION LEAGUE — $19,500 over 3y, 0.0% of budgetWORLD CENTRAL KITCHEN INC — $17,000 over 2y, 0.0% of budgetJEWBELONG INC — $13,500 over 3y, 0.1% of budgetHILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE — $10,500 over 2y, 0.0% of budgetTHE JEWISH FEDERATION OF GREATER WASHINGTON INC — $10,000 over 2y, 0.0% of budgetTHE ARMORY ART CENTER INC — $2,000 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.

  • Who funds INTERNATIONAL PLANNED PARENTHOOD FEDERATION WESTERN HEMISPHERE REGION
  • Who funds PLANNED PARENTHOOD FEDERATION OF AMERICA INC
  • Who funds SMITHSONIAN INSTITUTION
  • Who funds LIGHTHOUSE ARTCENTER INC
  • Who funds AMERICAN SOCIETY FOR TECHNION ISRAEL INSTITUTE OF TECHNOLOGY INC
  • Who funds The United States Holocaust Memorial Museum
  • Who funds MANDEL JEWISH COMMUNITY CENTER OF THE PALM BEACHES INC
  • Who funds SOUTHERN POVERTY LAW CENTER INC
  • Who funds ANTI-DEFAMATION LEAGUE
  • Who funds WORLD CENTRAL KITCHEN INC
  • Who funds JEWBELONG INC
  • Who funds HILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE
  • Who funds THE JEWISH FEDERATION OF GREATER WASHINGTON INC
  • Who funds THE ARMORY ART CENTER INC

Government reliance of your grantees

Every dot is one organization William J Siegel and Sally R Siegel Foundation Ltd 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 · 10%0%1%3%5%your share of their income ↑0%3%5%8%10%share of the org’s income from governmentmedian 0%
  • The Armory Art Center Inc0% of income from government
  • Lighthouse Artcenter Inc0% of income from government
no gov moneyreceives it· size = income
1get no government money at all
5report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–10%
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 18 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