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The Joan & Leo Mahoney Family Foundation at a glance

· Private foundation

The Joan & Leo Mahoney Family Foundation

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.

$220k
Granted FY2024still arriving
6
Grants FY2024still arriving
1
States reached
$50k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
01100% classified

What it funded, over time

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

Education$1.3MHealth$465kYouth Development$153kReligion$90kPhilanthropy$1k
02FY2024 · 6 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • $10k–50k2 grants · $20k
  • $50k–250k4 grants · $200k
$50,000
Median grant
1
States reached
$1.0M
Total assets
Largest grants
RecipientAmount
LOWELL CATHOLIC SCHOOL$50,000
BOYS GIRLS CLUB LOWELL$50,000
ST PATRICKS SCHOOL$50,000
BOSTON MEDICAL CENTER$50,000
CATHOLIC SCHOOLS FOUNDATION$10,000
XAVERIAN BROTHERS$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 (FY17–24) land where the poverty rate runs at 11%, against an area that typically sits at 10%. 40% of its dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.

area typical 10%NOTRE DAME ACADEMY: $50k → 8%XAVERIAN BROTHERS GNENERALATE: $25k → 10%HOLY FAMILY ACADEMY: $25k → 11%BOSTON MEDICAL CENTER: $50k → 16%SYRACUSE UNIVERSITY: $10k → 14%BUIST ACADEMY: $10k → 12%FAIRFIELD UNIVERISTY: $10k → 9%NOTRE DAME ACADEMY: $50k → 8%XAVERIAN BROTHERS GENERALATE: $25k → 10%HOLY FAMILY ACADEMY: $25k → 11%BOSTON MEDICAL CENTER: $50k → 16%SYRACUSE UNIVERSITY: $10k → 14%FAIRFIELD UNIVERSITY: $10k → 9%NOTRE DAME ACADEMY: $50k → 8%XAVERIAN BROS GENERAL: $25k → 10%BOSTON MEDICAL CENTER: $50k → 16%SYRACUSE UNIVERSITY: $10k → 14%FAIRFIELD UNIVERSITY: $10k → 9%NOTRE DAME EDUCATIONAL CENTER: $25k → 8%XAVERIAN BROTHES GENERALATE: $10k → 10%BOSTON MEDICAL CENTER: $50k → 16%ST PATRICK SCHOOL: $50k → 8%XAVERIAN BROTHERS: $10k → 10%BOSTON MEDICAL CENTER: $50k → 16%ST PATRICKSSCHOOL: $50k → 8%XAVERIAN BROTHERS GENERALATE: $10k → 10%BOSTON MEDICAL CENTER: $50k → 16%ST PATRICKS SCHOOL: $50k → 8%XAVERIAN BROTHERS: $10k → 10%BOSTON MEDICAL CENTER: $50k → 16%SAINT PATRICKS SCHOOL: $50k → 8%BOSTON MEDICAL CENTER: $50k → 16%ST PATRICKS CHURCH: $50k → 8%CATHOLIC SCHOOLS FOUNDATION: $12k → 16%ST PATRICKS SCHOOL: $50k → 8%ST PATRICKS SCHOOL: $50k → 8%ST PATRICKS SCHOOL: $50k → 8%ST PATRICKS SCHOOL: $50k → 8%LAWRENCE ACADEMY: $25k → 8%LOWELL CATHOLIC SCHOOL: $50k → 8%LOWELL CATHOLIC HIGH SCHOOL: $50k → 8%BOYS GIRLS CLUB LOWELL: $50k → 8%BOYS GIRLS CLUB OF GREATER LOWELL: $50k → 8%LOWELL CATHOLIC HIGH SCH: $50k → 8%LOWELL CATHOLIC HIGH SCHOOL: $50k → 8%BOYS GIRLS CLUB OF GREATER LOWELL: $50k → 8%LOWELL CATHOLIC HIGH SCHOOL: $50k → 8%BOYS GIRLS CLUB GREATER LOWELL: $50k → 8%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.

75%of every dollar goes to organizations it has funded before.
$1.5M · 16 repeat orgs$500k to everyone else

Grantees it renews have grown median revenue +40% since the first grant, against -51% for those funded once.

16 repeat relationships: 4 still active in FY2024, 12 since wound down; 2 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

16
20

Total granted

$1.5M
$400k

Median revenue growth · since first grant

+40%
-51%

Still filing today

44%
10%

New vs renewed · share of each year

In FY2024, 55% of grant dollars renewed an existing relationship; $100k 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
EducationHealthPhilanthropyYouth DevelopmentOther
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

  • BOSTON MEDICAL CENTER CORPORATION
    8× · 2017–2024 · $400k · revenue +115%
  • CS
    CATHOLIC SCHOOLS FOUNDATION INC
    5× · 2019–2024 · $52k · revenue +20%
  • TO
    TRUSTEES OF LAWRENCE ACADEMY AT GROTON MA CORP
    3× · 2017–2019 · $45k · revenue +40%

Funded once

  • SP
    ST PATRICKS CHURCH
    one grant, 2020 · $50k
  • BG
    BOYS GIRLS CLUB GREATER LOWELL
    one grant, 2023 · $50k
  • SP
    SAINT PATRICKS SCHOOL
    one grant, 2019 · $50k
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
New England Lawboston

New england law/boston dedicates itself to preparing students to be successful lawyers and leaders in the public and private sectors through integrated practical, theoretical and ethical education of the highest caliber and to contributing…

Education
3
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
4
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
5
Saint Anselm College

Saint anselm is a catholic, benedictine college providing all of its students a distinctive liberal arts education that incorporates opportunities for professional and career preparation. it does so in a learning community that encourages…

Education
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
President and Trustees of Bates College

Bates is a college of the liberal arts and sciences, and is a coeducational, nonsectarian, residential college with special commitments to academic rigor, and to assuring in all of its efforts the dignity of each individual, and access to…

Education
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
Northeastern University
Education
10
Trustees of Boston College

Mission strengthened by more than a century and a half of dedication to academic excellence, boston college commits itself to the highest standards of teaching and research in undergraduate, graduate and professional programs and to the…

Education
11
Trustees of Boston University

Organization's mission: boston university is an international, comprehensive, private research university, committed to educating students to be reflective, resourceful individuals ready to live, adapt, and lead in an interconnected world.…

—
12
Emmanuel College

Emmanuel college is a coed, residential catholic liberal arts and sciences college with 2,112 undergraduate and graduate students.

Education
How this is measured
The grantee most central to the portfolio’s shape is Syracuse University; the most unlike its peers is Sti Cares Foundation. 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

11 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. 11 of the 38 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)
0
Early backer (in before they grew)
10/11
Grantees still filing
6/11
Grew since first funded

Where the money sits, by cause and then by grantee

ST PATRICKS SCHOOL: $300,000 · OtherST PATRICKS SCHOOLLOWELL CATHOLIC: $150,000 · OtherLOWELL CATHOLICNOTRE DAME ACADEMY: $150,000 · OtherNOTRE DAME ACADEMYBOYS GIRLS CLUB OF GREATER LOWELL: $100,000 · OtherBOYS GIRLS CLUB OF GREATER LOWELLST PATRICKS CHURCH: $50,000 · OtherBOYS GIRLS CLUB GREATER LOWELL: $50,000 · OtherSAINT PATRICKS SCHOOL: $50,000 · OtherHOLY FAMILY ACADEMY: $50,000 · OtherLOWELL CATHOLIC HIGH SCH: $50,000 · OtherST PATRICK SCHOOL: $50,000 · OtherLOWELL CATHOLIC SCHOOL: $50,000 · Other+18 more: $301,000 · Other+18 moreBOSTON MEDICAL CENTER CORPORATION: $400,000 · HealthBOSTON MEDICAL CENTER C…+1 more: $9,000 · HealthCATHOLIC SCHOOLS FOUNDATION INC: $52,000 · EducationCATHOLIC …TRUSTEES OF LAWRENCE ACADEMY AT GROTON MA CORP: $45,000 · EducationTRUSTEES …SYRACUSE UNIVERSITY: $30,000 · EducationSYRACUSE …Fairfield University: $30,000 · EducationFairfield…+1 more: $5,000 · EducationBOYS & GIRLS CLUB OF GREATER LOWELL INC: $50,000 · Youth DevelopmentSTI CARES FOUNDATION: $1,000 · Philanthropy
Other$1,351,000Health$409,000Education$162,000Youth Development$50,000Philanthropy$1,000

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetBOSTON MEDICAL CENTER CORPORATION: $400,000 over 8y, 0.0% of budgetCATHOLIC SCHOOLS FOUNDATION INC: $52,000 over 5y, 0.1% of budgetBOYS & GIRLS CLUB OF GREATER LOWELL INC: $50,000 over 1y, 0.6% of budgetTRUSTEES OF LAWRENCE ACADEMY AT GROTON MA CORP: $45,000 over 3y, 0.1% of budgetSYRACUSE UNIVERSITY: $30,000 over 3y, 0.0% of budgetTHE FENN SCHOOL: $30,000 over 3y, 0.1% of budgetFairfield University: $30,000 over 3y, 0.0% of budgetNOTRE DAME EDUCATION CENTER INC: $10,000 over 1y, 0.8% of budgetYOUNG SURVIVAL COALITION INC: $9,000 over 3y, 0.1% of budgetSUFFOLK UNIVERSITY: $5,000 over 1y, 0.0% of budgetSTI CARES FOUNDATION: $1,000 over 1y, 0.3% 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 BOSTON MEDICAL CENTER CORPORATION ↗
  • Who funds CATHOLIC SCHOOLS FOUNDATION INC ↗
  • Who funds BOYS & GIRLS CLUB OF GREATER LOWELL INC ↗
  • Who funds TRUSTEES OF LAWRENCE ACADEMY AT GROTON MA CORP ↗
  • Who funds SYRACUSE UNIVERSITY ↗
  • Who funds THE FENN SCHOOL ↗
  • Who funds Fairfield University ↗
  • Who funds NOTRE DAME EDUCATION CENTER INC ↗
  • Who funds YOUNG SURVIVAL COALITION INC ↗
  • Who funds SUFFOLK UNIVERSITY ↗
  • Who funds STI CARES FOUNDATION ↗

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 FoundationVerizon FoundationAmerican Endowment Fo…The Pfizer Foundation…The Bank of America C…American Online Givin…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
Fidelity FoundationMA13.1× affinity4 shared granteesties to 8 of 8Hover any node to trace its alignments.Compare side by side →

Open a dossier: Fidelity Foundation · Verizon Foundation · American Endowment Foundation · The Pfizer Foundation Inc · The Bank of America Charitable Foundation Inc · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · 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 The Joan & Leo Mahoney Family Foundation funds: left to right is the share of its income from government, bottom to top the share from The Joan & Leo Mahoney Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 30%0%1%3%5%funder's share of their income ↑0%10%20%30%40%share of the org’s income from government →median 23%
  • Boys & Girls Club of Greater Lowell Inc: 27% of income from government
  • Boston Medical Center Corporation: 23% of income from government
  • Suffolk University: 1% of income from government
  • Fairfield University: 1% of income from government
no gov moneyreceives it· size = income
3get no government money at all
1report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–40%
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 The Joan & Leo Mahoney Family Foundation?

Find your warmest path to The Joan & Leo Mahoney 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 38 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 Joan & Leo Mahoney 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