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· Private foundation

Susan S and Kenneth L Wallach 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.

$4.0M
Granted FY2025still arriving
46
Grants FY2025still arriving
5
States reached
$1.3M
Largest
01What it funds
01100% 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$15MEducation$3.6MReligion$2.6MInternational$1.7MSocial Science$900kScience & Tech$475kHealth$361kCrime & Legal$55kOther$0
02FY2025 · 46 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k20 grants · $68k
  • $10k–50k16 grants · $310k
  • $50k–250k7 grants · $745k
  • $250k+3 grants · $2.9M
$10,000
Median grant
5
States reached
$97M
Total assets
Largest grants
RecipientAmount
LINCOLN CENTER FOR THE PERFORMING ARTS INC$1,250,000
COUNCIL ON FOREIGN RELATIONS INC$1,000,000
THE CHAMBER MUSIC SOCIETY OF LINCOLN CENTER$600,000
THE 92ND STREET Y$200,000
WNET$150,000
AMERICAN MUSEUM OF NATURAL HISTORY$145,000
AMERICAN ACADEMY OF ARTS AND SCIENCES$75,000
MASTERVOICES$75,000
MARTHA'S VINEYARD HOSPITAL INC$50,000
PACE UNIVERSITY$50,000
SPENCE SCHOOL$45,000
HARVARD UNIVERSITY PRESIDENT & FELLOWS OF HARVARD COLLEGE$35,000
TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK$30,000
NEW YORK PUBLIC LIBRARY$30,000
ST HILDA'S AND ST HUGH'S SCHOOL$25,000
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:

Its human-services grants (FY20–22, $12k) land where the poverty rate runs at 16%, against an area that typically sits at 10%. 92% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%FAMILY NURTURING CENTER OF MASSACHUSETTS INC: $1k → 16%UNITED WAY OF WESTCHESTER & PUTNAM INC: $1k → 9%LIFEFORCE IN LATER YEARS INC: $2k → 17%LIFEFORCE IN LATER YEARS INC: $2k → 17%VACLAV HAVEL LIBRARY FOUNDATION: $5k → 17%INNOCENCE PROJECT INC: $1k → 17%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.

Which US states its grants reach

WA
NY
MA
NJ
CT
CA
DC
TX
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.
$23M · 55 repeat orgs$1.2M to everyone else

Grantees it renews have grown median revenue +31% since the first grant, against +17% for those funded once.

55 repeat relationships: 40 still active in FY2025, 15 since wound down; 4 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

55
35

Total granted

$23M
$1.2M

Median revenue growth · since first grant

+31%
+17%

Still filing today

82%
77%

New vs renewed · share of each year

In FY2025, 99% of grant dollars renewed an existing relationship; $25k 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 & CultureEducationHealthInternationalEnvironmentHuman ServicesOther
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

  • LC
    LINCOLN CENTER FOR THE PERFORMING ARTS INC
    7× · 2019–2025 · $6.6M · revenue +55%
  • AM
    American Museum of Natural History
    7× · 2019–2025 · $3.5M · revenue +13%
  • TY
    THE YOUNG MEN'S AND YOUNG WOMEN'S HEBREW ASSOCIATION
    7× · 2019–2025 · $2.9M · revenue +18%

Funded once

  • RU
    RUTGERS UNIVERSITY RUTGERS LAW SCHOOL ALUMNI ASSOCIATION
    one grant, 2024 · $800k
  • BH
    BLUE HILL TROUPE LTDgraduated
    one grant, 2020 · $100k · revenue +39%
  • CE
    CARNEGIE ENDOWMENT FOR INTERNATIONAL PEACE
    one grant, 2024 · $50k · revenue -34%
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
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
2
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
3
Manhattanville University

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

Education
4
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
5
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
6
Boston Architectural College

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

—
7
Bard College

Bard college seeks to provide a challenging academic program and a supportive environment that fosters a collaborative interchange of ideas in the classroom as well as ambition to achieve excellence.

Education
8
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
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
Massachusetts Institute of Technology

The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.

Education
11
New York University

Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.

Education
12
Fordham University

Fordham university, the jesuit university of new york, is committed to the discovery of wisdom and the transmission of learning, through research and through education of the highest quality. for more information, see schedule o.

Education
How this is measured
The grantee most central to the portfolio’s shape is New York Landmarks Conservancy Inc; the most unlike its peers is The Institute of Classical Architecute & Art Texas Chapter. 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

81 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. 81 of the 98 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.

1
Load-bearing (≥25% of a budget)
13
Early backer (in before they grew)
79/81
Grantees still filing
55/81
Grew since first funded

Where the money sits, by cause and then by grantee

LINCOLN CENTER FOR THE PERFORMING ARTS INC: $6,635,000 · Arts & CultureLINCOLN CENTER FOR THE PERFORMING ARTS INCAmerican Museum of Natural History: $3,450,000 · Arts & CultureAmerican Museum of Natural HistoryWNET: $1,984,573 · Arts & CultureWNETThe Chamber Music Society of Lincoln Center Inc: $1,620,000 · Arts & CultureThe Chamber Music Society of Lincoln Center Inc+13 more: $567,000 · Arts & CultureTHE YOUNG MEN'S AND YOUNG WOMEN'S HEBREW ASSOCIATION: $2,855,000 · ReligionTHE YOUNG MEN…PACE UNIVERSITY: $1,020,000 · EducationPACE UNIVERS…President and Fellows of Harvard College: $746,000 · EducationPresident an…The New York Public Library Astor Lenox and Tilden Foundations: $189,317 · EducationThe New York…THE SPENCE SCHOOL: $185,000 · EducationTHE SPENCE S…TRUSTEES OF DEERFIELD ACADEMY: $115,000 · EducationTHE LIBRARY FOUNDATION OF LOS ANGELES: $105,000 · EducationPRINCETON DAY SCHOOL INC: $95,000 · Education+11 more: $229,400 · Education+11 moreRUTGERS UNIVERSITY RUTGERS LAW SCHOOL ALUMNI ASSOCIATION: $800,000 · OtherRUTGERS U…NATIONAL BOOK FOUNDATION INC: $271,000 · OtherNATIONAL …HARVARD UNIVERSITYPRESIDENT & FELLOWS OF HARVARD COLLEGE: $200,000 · OtherHARVARD U…HARVARD UNIVERSITY HARVARD LAW SCHOOL ALUMNI CENTER: $160,000 · OtherHARVARD U…MASS GENERAL BRIGHAM INCORPORATED: $102,000 · OtherBLUE HILL TROUPE LTD: $100,000 · OtherST HILDAS AND ST HUGHS SCHOOL: $100,000 · OtherFRIENDS SEMINARY: $75,000 · Other+40 more: $343,725 · Other+40 moreCOUNCIL ON FOREIGN RELATIONS INC: $1,600,000 · International+5 more: $125,000 · InternationalAMERICAN ACADEMY OF ARTS & SCIENCES: $900,000 · Social ScienceNEW YORK-PRESBYTERIAN FUND INC: $185,000 · HealthTHE COMMON GOOD INSTITUTE INC: $47,500 · HealthHUNTINGTON'S DISEASE FOUNDATION: $40,000 · Health+4 more: $11,000 · Health
Arts & Culture$14,256,573Religion$2,855,000Education$2,684,717Other$2,151,725International$1,725,000Social Science$900,000Health$283,500

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

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetLINCOLN CENTER FOR THE PERFORMING ARTS INC: $6,635,000 over 7y, 1.0% of budgetAmerican Museum of Natural History: $3,450,000 over 7y, 0.5% of budgetTHE YOUNG MEN'S AND YOUNG WOMEN'S HEBREW ASSOCIATION: $2,855,000 over 7y, 0.7% of budgetWNET: $1,984,573 over 7y, 0.4% of budgetThe Chamber Music Society of Lincoln Center Inc: $1,620,000 over 7y, 3.7% of budgetCOUNCIL ON FOREIGN RELATIONS INC: $1,600,000 over 7y, 1.0% of budgetPACE UNIVERSITY: $1,020,000 over 7y, 0.1% of budgetAMERICAN ACADEMY OF ARTS & SCIENCES: $900,000 over 7y, 1.7% of budgetPresident and Fellows of Harvard College: $746,000 over 7y, 0.0% of budgetMASTERVOICES INC: $279,500 over 7y, 4.6% of budgetNATIONAL BOOK FOUNDATION INC: $271,000 over 7y, 3.3% of budgetThe New York Public Library Astor Lenox and Tilden Foundations: $189,317 over 7y, 0.0% of budgetTHE SPENCE SCHOOL: $185,000 over 7y, 0.1% of budgetNEW YORK-PRESBYTERIAN FUND INC: $185,000 over 5y, 0.0% of budgetARCHITECTURAL CONSERVATION TRUST FOR MASSACHUSETTS INC: $125,000 over 4y, 32% of budgetTRUSTEES OF DEERFIELD ACADEMY: $115,000 over 7y, 0.1% of budgetTHE LIBRARY FOUNDATION OF LOS ANGELES: $105,000 over 7y, 0.2% of budgetBLUE HILL TROUPE LTD: $100,000 over 1y, 18% of budgetPRINCETON DAY SCHOOL INC: $95,000 over 7y, 0.1% of budgetTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $60,000 over 7y, 0.0% of budgetCARNEGIE ENDOWMENT FOR INTERNATIONAL PEACE: $50,000 over 1y, 0.1% of budgetTHE COMMON GOOD INSTITUTE INC: $47,500 over 6y, 1.4% of budgetHUNTINGTON'S DISEASE FOUNDATION: $40,000 over 6y, 0.5% of budgetTHE NIGHTINGALE-BAMFORD SCHOOL: $40,000 over 4y, 0.0% of budgetTrevor Day School: $35,000 over 7y, 0.0% of budgetTHE THIRTY SIX EAST SIXTY SECOND STREET FOUNDATION INC: $35,000 over 2y, 3.2% of budgetPRO PUBLICA INC: $35,000 over 7y, 0.0% of budgetHUMAN RIGHTS FIRST: $30,000 over 5y, 0.1% of budgetThe Foundation for a Civil Society LTD: $30,000 over 3y, 2.7% of budgetUNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC: $25,000 over 1y, 0.0% of budgetCaramoor Center for Music & the Arts Inc: $23,000 over 3y, 0.2% of budgetFIORELLO H LAGUARDIA COMMUNITY COLLEGE FOUNDATION INC: $20,000 over 2y, 0.2% of budgetTHE HOTCHKISS SCHOOL: $20,000 over 7y, 0.0% of budgetTHE RECORDER NEWS INC: $20,000 over 2y, 1.6% of budgetSCHOOL OF AMERICAN BALLET INC: $20,000 over 1y, 0.1% of budgetNEW YORK COMMON PANTRY: $20,000 over 3y, 0.1% of budget1898 FOUNDATION INC: $17,000 over 6y, 1.8% of budgetCARNEGIE HILL NEIGHBORS INC: $16,000 over 7y, 0.4% of budgetPAN-MASSACHUSETTS CHALLENGE INC: $15,000 over 1y, 0.0% of budgetCENTRAL PARK CONSERVANCY INC: $15,000 over 3y, 0.0% of budgetThe Browning School: $15,000 over 2y, 0.0% of budgetAPERTURE FOUNDATION INC: $12,000 over 4y, 0.1% of budgetKING'S ACADEMY INC: $10,000 over 1y, 0.3% of budgetTHE JEWISH MUSEUM: $10,000 over 1y, 0.0% of budgetTHE PHILHARMONIC SYMPHONY SOCIETY OF NY INC: $10,000 over 1y, 0.0% of budgetNEW YORK LANDMARKS CONSERVANCY INC: $10,000 over 1y, 0.2% of budgetLOUIS AUGUST JONAS FOUNDATION INC: $10,000 over 1y, 0.6% of budgetInternational Rescue Committee INC: $10,000 over 1y, 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.

  • Who funds LINCOLN CENTER FOR THE PERFORMING ARTS INC ↗
  • Who funds American Museum of Natural History ↗
  • Who funds THE YOUNG MEN'S AND YOUNG WOMEN'S HEBREW ASSOCIATION ↗
  • Who funds WNET ↗
  • Who funds The Chamber Music Society of Lincoln Center Inc ↗
  • Who funds COUNCIL ON FOREIGN RELATIONS INC ↗
  • Who funds PACE UNIVERSITY ↗
  • Who funds AMERICAN ACADEMY OF ARTS & SCIENCES ↗
  • Who funds President and Fellows of Harvard College ↗
  • Who funds MASTERVOICES INC ↗
  • Who funds NATIONAL BOOK FOUNDATION INC ↗
  • Who funds The New York Public Library Astor Lenox and Tilden Foundations ↗
  • Who funds THE SPENCE SCHOOL ↗
  • Who funds NEW YORK-PRESBYTERIAN FUND INC ↗
  • Who funds ARCHITECTURAL CONSERVATION TRUST FOR MASSACHUSETTS INC ↗
  • Who funds TRUSTEES OF DEERFIELD ACADEMY ↗
  • Who funds THE LIBRARY FOUNDATION OF LOS ANGELES ↗
  • Who funds BLUE HILL TROUPE LTD ↗
  • Who funds PRINCETON DAY SCHOOL INC ↗
  • Who funds THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK ↗
  • Who funds CARNEGIE ENDOWMENT FOR INTERNATIONAL PEACE ↗
  • Who funds THE COMMON GOOD INSTITUTE INC ↗
  • Who funds HUNTINGTON'S DISEASE FOUNDATION ↗
  • Who funds THE NIGHTINGALE-BAMFORD SCHOOL ↗
  • Who funds Trevor Day School ↗
  • Who funds THE THIRTY SIX EAST SIXTY SECOND STREET FOUNDATION INC ↗
  • Who funds PRO PUBLICA INC ↗
  • Who funds HUMAN RIGHTS FIRST ↗
  • Who funds The Foundation for a Civil Society LTD ↗
  • Who funds UNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC ↗
  • Who funds Caramoor Center for Music & the Arts Inc ↗

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.

The New York Community TrustNY24.1× affinity11 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The New York Community Trust · The Goldman Sachs Charitable Gift Fund · Jewish Communal Fund · The Ayco Charitable Foundation · The Bessemer Giving Fund · The Ford Foundation · AC Israel Foundation Inc · American Express Foundation · LNS&ARS Foundation · One Hundred Ways Foundation · The Fledgling Fund · The Speyer Family Foundation Inc

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 Susan S and Kenneth L Wallach Foundation funds: left to right is the share of its income from government, bottom to top the share from Susan S and Kenneth L Wallach Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 90%3%10%23%40%funder's share of their income ↑0%13%25%38%50%share of the org’s income from government →median 3%
  • Martha's Vineyard Community Foundation Inc: 34% of income from government
  • President and Fellows of Harvard College: 7% of income from government
  • Martha's Vineyard Preservation Trust Inc: 4% of income from government
  • American Academy of Arts & Sciences: 3% of income from government
  • Martha's Vineyard Playhouse Inc: 2% of income from government
  • Island Housing Trust Corporation: 1% of income from government
  • Massachusetts Audubon Society Inc: 1% of income from government
  • Pan-Massachusetts Challenge Inc: 0% of income from government
no gov moneyreceives it· size = income
9get no government money at all
19report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–50%
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 Susan S and Kenneth L Wallach Foundation?

Find your warmest path to Susan S and Kenneth L Wallach 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 98 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

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