· Private foundation
Martha Mack Lewis Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k7 grants · $35k
- $10k–50k1 grant · $25k
| Recipient | Amount |
|---|---|
| KISKIMINETAS SPRINGS SCHOOL | $25,000 |
| PITTSBURGH SYMPHONY ORCHESTRA | $5,000 |
| THE CHILDREN'S HOME OF PITTSBURGH | $5,000 |
| PITTSBURGH YOUTH LEADERSHIP | $5,000 |
| FOLDS OF HONOR | $5,000 |
| PITTSBURGH YOUTH SYMPHONY ORCHESTRA | $5,000 |
| PITTSBURGH OPERA INC | $5,000 |
| VETERAN'S PLACE | $5,000 |
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.
Your 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. Your grants spread fairly evenly across need levels.
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.
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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +22% since the first grant, against +13% for the ones you 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
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 92% of grant dollars renewed an existing relationship; $5k went to new ones.
Where new relationships form · theme of each grantee’s first grant
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
- CICARNEGIE INSTITUTE4× · 2017–2020 · $80k · revenue +57%
- TKTHE KISKI SCHOOL3× · 2019–2025 · $65k · revenue +17%
- PSPITTSBURGH SYMPHONY INC4× · 2018–2025 · $32k · revenue +22%
Funded once
- CICHAUTAUQUA INSTITUTIONgraduatedone grant, 2018 · $10k · revenue +99%
- CMCHILDREN'S MUSEUM OF PITTSBURGHone grant, 2017 · $6k · revenue +13%
- FLFORT LIGONIER ASSOCIATIONone grant, 2017 · $6k · revenue +3%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
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.
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…
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…
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,…
Tourism development organization dedicated to expanding the tourism economy across allegheny county.
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;…
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.
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,…
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
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…
To provide a means for sharing resources and information among members, engage in joint projects, and offer a common voice on educational matters.
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…
For reference, the grantee most central to the portfolio’s shape is Gettysburg Foundation and 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.
20 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 2017–2025, 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; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
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 CARNEGIE INSTITUTE ↗
- Who funds THE KISKI SCHOOL ↗
- Who funds GETTYSBURG FOUNDATION ↗
- Who funds PITTSBURGH OPERA INC ↗
- Who funds PITTSBURGH SYMPHONY INC ↗
- Who funds THE CHILDREN'S HOME OF PITTSBURGH ↗
- Who funds GRIER FOUNDATION ↗
- Who funds PITTSBURGH YOUTH LEADERSHIP ↗
- Who funds CANINE COMPANIONS FOR INDEPENDENCE INC ↗
- Who funds FOLDS OF HONOR EASTERN-PA-NJ-CHAPTER ↗
- Who funds FOLDS OF HONOR WESTERN PA ↗
- Who funds CHAUTAUQUA INSTITUTION ↗
- Who funds Ronald McDonald House Global ↗
- Who funds PITTSBURGH BALLET THEATRE INC ↗
- Who funds CHILDREN'S MUSEUM OF PITTSBURGH ↗
- Who funds FORT LIGONIER ASSOCIATION ↗
- Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
- Who funds HISTORICAL SOCIETY OF WESTERN PENNSYLVANIA ↗
- Who funds ASSOCIATED LUTHERAN MISSIONS INC ↗
- Who funds OFF THE FLOOR PITTSBURGH ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
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
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Martha Mack Lewis Foundation 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 or a single department — and drag the year to watch it move.
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.
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.