Skip to content
Martha Mack Lewis Foundation at a glance

· Private foundation

Martha Mack Lewis Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$60k
Granted FY2025still arriving
8
Grants FY2025still arriving
1
States reached
$25k
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 2025.

Arts & Culture$207kEducation$126kHuman Services$69kYouth Development$26kHousing & Shelter$20kScience & Tech$20kAnimals$18kReligion$5kOther$0
02FY2025 · 8 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k7 grants · $35k
  • $10k–50k1 grant · $25k
$5,000
Median grant
1
States reached
$1.0M
Total assets
Largest grants
RecipientAmount
KISKIMINETAS SPRINGS SCHOOL$25,000
PITTSBURGH YOUTH SYMPHONY ORCHESTRA$5,000
PITTSBURGH SYMPHONY ORCHESTRA$5,000
PITTSBURGH OPERA INC$5,000
PITTSBURGH YOUTH LEADERSHIP$5,000
FOLDS OF HONOR$5,000
VETERAN'S PLACE$5,000
THE CHILDREN'S HOME OF PITTSBURGH$5,000
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 (FY19–24, $21k) land where the poverty rate runs at 10%, against an area that typically sits at 9%. 51% of those dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.

area typical 9%OFF THE FLOOR PITTSBURGH: $3k → 11%CANINE COMPANIONS FOR INDEPENDENCE: $5k → 5%CANINE COMPANIONS FOR INDEPENDENCE: $5k → 15%CANINE COMPANIONS FOR INDEPENDENCE: $5k → 5%CANINE COMPANIONS FOR INDEPENDENCE: $3k → 15%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.

89%of every dollar goes to organizations it has funded before.
$438k · 15 repeat orgs$56k to everyone else

Grantees it renews have grown median revenue +22% since the first grant, against +13% for those funded once.

15 repeat relationships: 7 still active in FY2025, 8 since wound down; 1 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

15
10

Total granted

$438k
$51k

Median revenue growth · since first grant

+22%
+13%

Still filing today

87%
60%

New vs renewed · share of each year

In FY2025, 92% of grant dollars renewed an existing relationship; $5k 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 & CultureEducationHealthHuman ServicesYouth 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

  • CI
    CARNEGIE INSTITUTE
    4× · 2017–2020 · $80k · revenue +57%
  • TK
    THE KISKI SCHOOL
    3× · 2019–2025 · $65k · revenue +17%
  • PS
    PITTSBURGH SYMPHONY INC
    4× · 2018–2025 · $32k · revenue +22%

Funded once

  • CI
    CHAUTAUQUA INSTITUTIONgraduated
    one grant, 2018 · $10k · revenue +99%
  • CM
    CHILDREN'S MUSEUM OF PITTSBURGH
    one grant, 2017 · $6k · revenue +13%
  • FL
    FORT LIGONIER ASSOCIATION
    one grant, 2017 · $6k · revenue +3%
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
Point Park University

Provides innovative education in a dynamic urban setting. dedicated to academic excellence and community engagement,we prepare students of diverse backgrounds with the knowledge, skill,and experience to lead meaningful lives as informed…

—
2
The Friends of the Pittsburgh Institutions
—
3
University of Pittsburgh

The university of pittsburgh, founded in 1787, is one of the oldest institutions of higher education in the united states and one of the nation's top public research universities. for more than two centuries, the university of pittsburgh…

Education
4
Zoological Society of Pittsburgh

The zoological society of pittsburgh is dedicated to being a leader in, and significant contributor to, the conservation of endangered and threatened species. the society provides an enjoyable family experience that fosters understanding,…

Animals
5
Greater Pittsburgh Convention & Visitors Bureau Inc

Tourism development organization dedicated to expanding the tourism economy across allegheny county.

—
6
Pittsburgh History & Landmarks Foundation

Phlf works within a 250-mile radius of pittsburgh, pennsylvania to: identify and save historically significant places; renew historic neighborhoods, towns, and urban areas; preserve historic farms and historically designated landscapes;…

Arts & Culture
7
Westmoreland Museum of American Art

The westmoreland museum of american art offers a place to share compelling and meaningful cultural experiences that open the door to new ideas, perspectives, and possibilities.

Arts & Culture
8
The Children's Hospital of Philadelphia

The children's hospital of philadelphia, the oldest hospital in the united states dedicated exclusively to pediatrics, strives to be the world leader in the advancement of health care for children by integrating excellent patient care,…

Health
9
The Pittsburgh Foundation

Established in 1945, the pittsburgh foundation is one of the oldest and largest community foundations in the united states. see additional information in schedule o

Philanthropy
10
Western Pennsylvania Conservancy

The western pennsylvania conservancy protects and restores exceptional places to provide our region with clean waters and healthy forests, wildlife and natural areas for the benefit of present and future generations. the conservancy…

Environment
11
Pittsburgh Council On Higher Education

To provide a means for sharing resources and information among members, engage in joint projects, and offer a common voice on educational matters.

Education
12
Pittsburgh Mercy Health System Inc

We, pittsburgh mercy health system (pittsburgh mercy) and trinity health, serve together in the spirit of the gospel as a compassionate and transforming healing presence within our communities. pittsburgh mercy is a member of trinity…

Health
How this is measured
The grantee most central to the portfolio’s shape is Gettysburg Foundation; the most unlike its peers is Associated Lutheran Missions Inc. 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

20 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. 20 of the 26 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)
1
Early backer (in before they grew)
19/20
Grantees still filing
14/20
Grew since first funded

Where the money sits, by cause and then by grantee

CARNEGIE INSTITUTE: $80,000 · Arts & CultureCARNEGIE INSTITUTEGETTYSBURG FOUNDATION: $38,500 · Arts & CultureGETTYSBURG FOUNDATIONPITTSBURGH OPERA INC: $33,000 · Arts & CulturePITTSBURGH OPERA INCPITTSBURGH SYMPHONY INC: $32,000 · Arts & CulturePITTSBURGH SYMPHONY INCCHAUTAUQUA INSTITUTION: $10,000 · Arts & CulturePITTSBURGH BALLET THEATRE INC: $8,500 · Arts & Culture+3 more: $17,500 · Arts & Culture+3 moreTHE KISKI SCHOOL: $65,000 · EducationTHE KISKI SCHOOLGRIER FOUNDATION: $30,000 · EducationGRIER FOUNDATIONFOLDS OF HONOR EASTERN-PA-NJ-CHAPTER: $15,500 · EducationFOLDS OF HONOR EASTERN-PA-NJ…FOLDS OF HONOR WESTERN PA: $10,000 · EducationFOLDS OF HONOR WESTERN PASTEPHEN SILLER TUNNEL TO TOWERS FOUNDATION: $5,500 · EducationVETERAN'S PLACE: $25,500 · OtherVETERAN'S PLAC…HABITAT FOR HUMANITY: $15,000 · OtherHABITAT FOR HU…HABITAT FOR HUMANITY OF GREATER: $5,000 · OtherHABITAT FOR HU…PITTSBURGH YOUTH SYMPHONY ORCHESTRA: $5,000 · OtherPITTSBURGH YOU…ASSOCIATED LUTHERAN MISSIONS INC: $5,000 · OtherASSOCIATED LUT…CHILDRENS HOSPITAL OF PITTSBURGH: $3,000 · OtherPITTSBURGH YOUTH SYMPHONY: $2,700 · OtherTHE CHILDREN'S HOME OF PITTSBURGH: $30,500 · HealthTHE CHILD…Ronald McDonald House Global: $10,000 · HealthRonald Mc…PITTSBURGH YOUTH LEADERSHIP: $26,000 · Youth DevelopmentCANINE COMPANIONS FOR INDEPENDENCE INC: $18,000 · Human ServicesOFF THE FLOOR PITTSBURGH: $2,500 · Human Services
Arts & Culture$219,500Education$126,000Other$61,200Health$40,500Youth Development$26,000Human Services$20,500

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 budgetCARNEGIE INSTITUTE: $80,000 over 4y, 0.0% of budgetTHE KISKI SCHOOL: $65,000 over 3y, 0.2% of budgetGETTYSBURG FOUNDATION: $38,500 over 5y, 0.1% of budgetPITTSBURGH OPERA INC: $33,000 over 5y, 0.1% of budgetPITTSBURGH SYMPHONY INC: $32,000 over 4y, 0.0% of budgetTHE CHILDREN'S HOME OF PITTSBURGH: $30,500 over 4y, 0.1% of budgetGRIER FOUNDATION: $30,000 over 2y, 0.3% of budgetPITTSBURGH YOUTH LEADERSHIP: $26,000 over 6y, 4.3% of budgetCANINE COMPANIONS FOR INDEPENDENCE INC: $18,000 over 4y, 0.0% of budgetFOLDS OF HONOR EASTERN-PA-NJ-CHAPTER: $15,500 over 3y, 1.2% of budgetCHAUTAUQUA INSTITUTION: $10,000 over 1y, 0.0% of budgetRonald McDonald House Global: $10,000 over 2y, 0.0% of budgetFOLDS OF HONOR WESTERN PA: $10,000 over 2y, 1.4% of budgetPITTSBURGH BALLET THEATRE INC: $8,500 over 2y, 0.1% of budgetCHILDREN'S MUSEUM OF PITTSBURGH: $6,000 over 1y, 0.0% of budgetFORT LIGONIER ASSOCIATION: $6,000 over 1y, 0.4% of budgetHISTORICAL SOCIETY OF WESTERN PENNSYLVANIA: $5,500 over 1y, 0.1% of budgetSTEPHEN SILLER TUNNEL TO TOWERS FOUNDATION: $5,500 over 1y, 0.0% of budgetOFF THE FLOOR PITTSBURGH: $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.

Richard King Mellon F…The Pittsburgh Founda…Clapp G H Decd Char a…The Jack Buncher Foun…Eqt FoundationAllegheny FoundationEden Hall FoundationThe Grable FoundationHillman Family Founda…Wi Patterson Charitab…The Burke FoundationThe Burke Family Foun…
Richard King Mellon FoundationPA23.9× affinity9 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Richard King Mellon Foundation · The Pittsburgh Foundation · Clapp G H Decd Char and Ed Tr · The Jack Buncher Foundation · Eqt Foundation · Allegheny Foundation · Eden Hall Foundation · The Grable Foundation · Hillman Family Foundations · Wi Patterson Charitable Fund · The Burke Foundation · The Burke Family 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 Martha Mack Lewis Foundation funds: left to right is the share of its income from government, bottom to top the share from Martha Mack Lewis Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%0%1%3%5%funder's share of their income ↑0%3%5%8%10%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get 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, 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 Martha Mack Lewis Foundation?

    Find your warmest path to Martha Mack Lewis 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 26 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

    Play a game based on Martha Mack Lewis’ 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