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The Slater Foundation Inc at a glance

· Private foundation

The Slater Foundation Inc

Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$1.1M
Granted FY2024still arriving
14
Grants FY2024still arriving
4
States reached
$250k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
0199% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Education$2.1MHuman Services$1.5MSocial Science$1.2MHealth$1.0MScience & Tech$775kReligion$433kPhilanthropy$247kAnimals$210kOther$0
02FY2024 · 14 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k4 grants · $11k
  • $10k–50k4 grants · $65k
  • $50k–250k4 grants · $510k
  • $250k+2 grants · $500k
$35,000
Median grant
4
States reached
$64k
Total assets
Largest grants
RecipientAmount
BOSTON UNIVERSITY$250,000
OPERATION HOMEFRONT$250,000
MASSACHUSETTS GENERAL HOSPITAL$210,000
WOODROW WILSON INTERNATIONAL CENTER FOR SCHOLARS$150,000
TEMPLE EMANUEL$100,000
SPAULDING REHABILITATION HOSPITAL$50,000
MCGILL UNIVERSITY$35,000
BOSTON CHILDREN'S MUSEUM$10,000
THE LENNY ZAKIM FUND$10,000
NEW ENGLAND AQUARIUM$10,000
ADAMS PRESIDENTIAL CENTER$5,000
AMERICAN FRIENDS OF MAGEN DAVID ADOM$5,000
TOWN OF WESTON - WEEFC$500
MORRISON SCHOOL PTO$500
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 (FY17–23, $88k) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 63% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%PLUMMER YOUTH PROMISE INC: $30k → 10%HILL HOUSE: $10k → 16%UNITED SOUTH END SETTLEMENTS: $3k → 16%QUINCY AFTER SCHOOL CHILD CARE INC: $3k → 7%MISSION HILL LINK INC: $5k → 16%FENWAY COMMUNITY CENTER: $3k → 16%FATHERS UPLIFT INC: $25k → 16%HILL HOUSE: $10k → 16%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

IL
NY
MA
IN
CA
MD
TN
DC
TX
FL
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.
04

Where the work is directed

The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.

About 11% of The Slater Foundation Inc’s grant dollars are earmarked for a different county than the recipient’s own address.

The Slater Foundation Inclessmore of its giving
Placed by recipient address · 3.9% directed abroad (not shown)
How this is measured
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the funder’s own 990 grant descriptions.
03Its grantees
repeat funding

Who it funds again

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

90%of every dollar goes to organizations it has funded before.
$6.4M · 29 repeat orgs$749k to everyone else

Grantees it renews have grown median revenue +61% since the first grant, against +25% for those funded once.

29 repeat relationships: 10 still active in FY2024, 19 since wound down; 4 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

29
38

Total granted

$6.4M
$548k

Median revenue growth · since first grant

+61%
+25%

Still filing today

76%
63%

New vs renewed · share of each year

In FY2024, 81% of grant dollars renewed an existing relationship; $201k went to new ones.

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

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

’17’18’19’20’21’22’23’24
Human ServicesHealthInternationalEducationArts & CulturePhilanthropyOther
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

  • OH
    OPERATION HOMEFRONT INC
    7× · 2017–2024 · $1.4M · revenue +41%
  • TRUSTEES OF BOSTON UNIVERSITY
    4× · 2019–2024 · $1.0M · revenue +32%
  • ELLIE FUND INC
    4× · 2017–2022 · $123k · revenue +178%

Funded once

  • AE
    AMERICAN EPILEPSY SOCIETY
    one grant, 2020 · $100k · revenue +9%
  • AI
    AMERICAN ISRAEL EDUCATION FOUNDATION INC
    one grant, 2021 · $75k · revenue -6%
  • PLUMMER YOUTH PROMISE INCgraduated
    one grant, 2020 · $30k · revenue +84%
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
Boston Architectural College

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

—
2
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
3
Massachusetts Higher Education Assistance Corporation

The organization's primary exempt purpose is to provide access to and conduct activities in furtherance of higher education.

—
4
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.

—
5
Federation of State Medical Boards of the United States Inc

The fsmb serves as the voice for state medical boards, supporting them through education, assessment, research and advocacy while providing services and initiatives that promote patient safety, quality health care and regulatory best…

Health
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
Massachusetts Business Roundtable Inc

The mission of the roundtable is to make massachusetts the most desirable place to live, work and do business by engaging private sector executives and public leaders to ensure access to a robust, diverse and talented workforce that…

—
8
Wentworth Institute of Technology Inc

Wentworth institute of technology is a nationally recognized private coeducational and residential university of higher education with a mission to empower, inspire and innovate through experiential learning with a core purpose of career…

Education
9
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
10
Children's Hospital Corporation

Provider of pediatric healthcare, education, research & community service

Health
11
Brighton Marine Inc

Brighton marine, inc. provides military and veteran families with comprehensive campus-based quality health care, as well as affordable and supportive housing for at-risk veterans and their families.

Health
12
The Bridgespan Group Inc

Bridgespan's mission is to build a better world by strengthening the ability of mission-driven organizations and philanthropists to achieve breakthrough results in addressing society's most important challenges and opportunities.

Community Improvement
How this is measured
The grantee most central to the portfolio’s shape is The Lenny Zakim Fund; the most unlike its peers is The Joseph Lemm Memorial Foundation Ltd. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
05the grantee network

54 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. 54 of the 76 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)
13
Early backer (in before they grew)
52/54
Grantees still filing
42/54
Grew since first funded

Where the money sits, by cause and then by grantee

THE WILSON CENTER: $1,165,000 · OtherTHE WILSON CENTERTRUSTEES OF BOSTON UNIVERSITY: $1,002,000 · OtherTRUSTEES OF BOSTON UNIVERSITYMCGILL UNIVERSITY: $765,000 · OtherMCGILL UNIVERSITYMASSACHUSETTS GENERAL HOSPITAL: $607,000 · OtherMASSACHUSETTS GENERAL HOSPITALTEMPLE EMANUEL: $376,530 · OtherTEMPLE EMANUEL+47 more: $840,873 · Other+47 moreOPERATION HOMEFRONT INC: $1,400,000 · Community ImprovementOPERATION HOMEFRONT…AMERICAN SOCIETY FOR TECHNION ISRAEL INSTITUTE OF TECHNOLOGY INC: $775,000 · InternationalAMERICAN SOC…AMERICAN ISRAEL EDUCATION FOUNDATION INC: $75,000 · InternationalAMERICAN ISR…+5 more: $54,700 · International+5 moreELLIE FUND INC: $122,907 · EducationBRIDGE BOSTON FOUNDATION INC: $73,000 · EducationBEACON HILL NURSERY SCHOOL INC: $43,500 · EducationNETWORK OF ENLIGHTENED WOMEN INC: $10,000 · Education+1 more: $5,000 · EducationTHE LENNY ZAKIM FUND: $213,422 · ReligionMASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $100,000 · AnimalsNEW ENGLAND AQUARIUM CORPORATION: $95,000 · AnimalsBIG DOG RANCH RESCUE INC: $15,000 · AnimalsAMERICAN EPILEPSY SOCIETY: $100,000 · HealthDana-Farber Cancer Institute Inc: $69,300 · HealthTHE BINA FARM INC: $11,500 · HealthHAYMAKERS FOR HOPE INC: $7,500 · Health+3 more: $10,000 · Health
Other$4,756,403Community Improvement$1,400,000International$904,700Education$254,407Religion$213,422Animals$210,000Health$198,300

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 budgetOPERATION HOMEFRONT INC: $1,400,000 over 7y, 0.7% of budgetTRUSTEES OF BOSTON UNIVERSITY: $1,002,000 over 4y, 0.0% of budgetAMERICAN SOCIETY FOR TECHNION ISRAEL INSTITUTE OF TECHNOLOGY INC: $775,000 over 4y, 0.5% of budgetTHE LENNY ZAKIM FUND: $213,422 over 5y, 6.8% of budgetWOODROW WILSON INTERNATIONAL CENTER FOR SCHOLARS: $150,000 over 1y, 0.5% of budgetELLIE FUND INC: $122,907 over 4y, 5.1% of budgetTHE CHILDRENS MUSEUM: $116,873 over 7y, 0.3% of budgetMASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $100,000 over 2y, 0.1% of budgetAMERICAN EPILEPSY SOCIETY: $100,000 over 1y, 0.9% of budgetNEW ENGLAND AQUARIUM CORPORATION: $95,000 over 7y, 0.1% of budgetAMERICAN ISRAEL EDUCATION FOUNDATION INC: $75,000 over 1y, 0.1% of budgetBRIDGE BOSTON FOUNDATION INC: $73,000 over 7y, 0.7% of budgetTHE KINGSLEY MONTESSORI SCHOOL INC: $70,000 over 3y, 0.3% of budgetDana-Farber Cancer Institute Inc: $69,300 over 5y, 0.0% of budgetBEACON HILL NURSERY SCHOOL INC: $43,500 over 3y, 0.9% of budgetPLUMMER YOUTH PROMISE INC: $30,000 over 1y, 0.4% of budgetFATHERS UPLIFT INCORPORATED: $25,000 over 1y, 1.0% of budgetHOUSING FORWARD-MA INC: $25,000 over 1y, 9.7% of budgetHILL HOUSE INC: $20,000 over 2y, 1.1% of budgetEMERALD NECKLACE CONSERVANCY INC: $20,000 over 3y, 0.3% of budgetBest Buddies International Inc: $15,000 over 2y, 0.0% of budgetBIG DOG RANCH RESCUE INC: $15,000 over 2y, 0.1% of budgetPalm Beach Fellowship of Christians and Jews Inc: $15,000 over 1y, 7.5% of budgetSARASOTA FILM FESTIVAL INC: $15,000 over 1y, 1.8% of budgetCOMPASS WORKING CAPITAL INC: $12,500 over 2y, 0.3% of budgetTHE BINA FARM INC: $11,500 over 3y, 0.7% of budgetALEX'S TEAM FOUNDATION INC: $11,000 over 3y, 2.9% of budgetTHE SOLDIERS FUND INC: $11,000 over 2y, 4.7% of budgetThe Joseph Lemm Memorial Foundation LTD: $10,000 over 1y, 14% of budgetFRIENDS OF JEWISH RENEWAL IN POLAND: $10,000 over 1y, 8.5% of budgetNETWORK OF ENLIGHTENED WOMEN INC: $10,000 over 2y, 0.7% of budgetGIVE2ASIA: $10,000 over 1y, 0.0% of budgetVIETNAM VETERANS WORKSHOP INC DBA NEW ENGLAND CENTER AND HOME FOR VETERANS: $10,000 over 1y, 0.1% of budgetJEWISH BIG BROTHER & BIG SISTER ASSOCIATION OF GREATER BOSTON: $10,000 over 1y, 0.6% of budgetGREATER MIAMI JEWISH FEDERATION INC: $10,000 over 1y, 0.0% of budgetAMERICAN FRIENDS OF MAGEN DAVID ADOM: $8,700 over 2y, 0.0% of budgetHAYMAKERS FOR HOPE INC: $7,500 over 2y, 0.2% of budgetFENWAY COMMUNITY DEVELOPMENT CORPORATION: $5,000 over 1y, 0.1% of budgetMISSION HILL LINK INC: $5,000 over 1y, 4.0% of budgetSOCIEDAD LATINA INC: $5,000 over 1y, 0.2% of budgetBRANDEIS UNIVERSITY: $5,000 over 1y, 0.0% of budgetThe Commonwealth Shakespeare Co Inc: $3,500 over 2y, 0.2% of budgetTHE FENWAY COMMUNITY CENTER AT VIRIDIAN INC: $3,000 over 1y, 2.8% of budgetUNITED SOUTH END SETTLEMENTS: $2,500 over 1y, 0.1% of budgetFOUNDATION FOR BOSTON CENTERS FOR YOUTH & FAMILIES INC: $2,500 over 1y, 0.2% of budgetBoston Foundation Inc: $2,500 over 1y, 0.0% of budgetST JUDE CHILDREN'S RESEARCH HOSPITAL INC: $2,500 over 1y, 0.0% of budgetQUINCY AFTER SCHOOL CHILD CARE INC: $2,500 over 1y, 0.1% 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.

Boston Foundation IncEastern Bank Foundati…Combined Jewish Phila…Liberty Mutual Founda…United Way Of Massach…Boston Charitable Tru…Cummings Foundation G…Children's Hospital C…The Klarman Family Fo…Highland Street Conne…Fidelity FoundationBarr Foundation
Boston Foundation IncMA31.1× affinity16 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Boston Foundation Inc · Eastern Bank Foundation · Combined Jewish Philanthropies of Greater Boston Inc · Liberty Mutual Foundation Inc · United Way Of Massachusetts Bay Inc · Boston Charitable Trust Fund City of Boston Trust Office · Cummings Foundation Grants Inc (Fka Oneworld Boston Inc) · Children's Hospital Corporation · The Klarman Family Foundation · Highland Street Connection and Subsidiaries · Fidelity Foundation · Barr 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 The Slater Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from The Slater Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 130%1%4%8%15%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 12%
  • Vietnam Veterans Workshop Inc Dba New England Center and Home for Veterans: 66% of income from government
  • Plummer Youth Promise Inc: 64% of income from government
  • International Institute of New England Inc: 24% of income from government
  • Fathers Uplift Incorporated: 22% of income from government
  • Mission Hill Link Inc: 20% of income from government
  • Ellie Fund Inc: 15% of income from government
  • Sociedad Latina Inc: 15% of income from government
  • The Fenway Community Center at Viridian Inc: 15% of income from government
  • Trustees of Boston University: 12% of income from government
  • New England Aquarium Corporation: 12% of income from government
  • Brandeis University: 9% of income from government
  • Dana-Farber Cancer Institute Inc: 7% of income from government
  • Best Buddies International Inc: 4% of income from government
  • The Childrens Museum: 1% of income from government
  • Compass Working Capital Inc: 1% of income from government
  • Emerald Necklace Conservancy Inc: 0% of income from government
  • Big Dog Ranch Rescue Inc: 0% of income from government
  • Boston Foundation Inc: 0% of income from government
no gov moneyreceives it· size = income
13get no government money at all
8report government grants on their 990 we could not trace to a source (not plotted)
2rely on government for over half their income
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.

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 76 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.

Source object · view filing

Play a game based on Slater’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