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Plinth

· Private foundation

Mason Martha Lockhart

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.

$413k
Granted FY2025still arriving
33
Grants FY2025still arriving
2
States reached
$83k
Largest
01What you fund
0189% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20202025.

Health$862kReligion$396kHuman Services$338kYouth Development$245kEducation$223kAnimals$58kMembership Benefit$19kOther$0
02FY2025 · 33 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k22 grants · $118k
  • $10k–50k10 grants · $213k
  • $50k–250k1 grant · $83k
$8,260
Median grant
2
States reached
$7.2M
Total assets
Largest grants
RecipientAmount
ALLEGHENY GENERAL HOSPITAL$82,596
KINGSLEY ASSOCIATION$41,296
PRESBYTERIAN CHURCH (USA) FDN$35,104
Individual grant recipient$20,648
CHATHAM UNIVERSITY$20,648
EASTMINSTER UNTD PRSBYTRN CHURCH$20,648
PRESBYTERIAN SENIOR CARE FOUNDATION$20,648
FORBES HEALTH FOUNDATION$20,648
EASTMINSTER CHURCH WOMEN TRUST$12,388
ST BARNABAS CHARITIES$10,324
HUMANE ANIMAL RESCUE$10,324
BREATHE PENNSYLVANIA$8,260
Individual grant recipient$8,260
Y M C A OF GREATER PITTSBURGH$8,260
MARS HOME FOR YOUTH FOUNDATION$8,260
02The need
03

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.

show:

Your human-services grants (FY20–25, $163k) land where the poverty rate runs at 11%, against an area that typically sits at 9%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 9%MARS HOME FOR YOUTH FOUNDATION: $8k → 9%MARS HOME FOR YOUTH FOUNDATION: $8k → 9%MARS HOME FOR YOUTH FOUNDATION: $8k → 9%MARS HOME FOR YOUTH FOUNDATION: $8k → 9%MARS HOME FOR YOUTH FOUNDATION: $7k → 9%MARS HOME FOR YOUTH FOUNDATION: $7k → 9%Y M C A OF GREATER PITTSBURGH: $17k → 11%Y M C A OF GREATER PITTSBURGH: $8k → 11%Y M C A OF GREATER PITTSBURGH: $8k → 11%Y M C A OF GREATER PITTSBURGH: $8k → 11%Y M C A OF GREATER PITTSBURGH: $8k → 11%Y M C A OF GREATER PITTSBURGH: $8k → 11%Y M C A OF GREATER PITTSBURGH: $8k → 11%Y M C A OF GREATER PITTSBURGH: $7k → 11%Y M C A OF GREATER PITTSBURGH: $7k → 11%Y M C A OF GREATER PITTSBURGH: $7k → 11%Y M C A OF GREATER PITTSBURGH: $7k → 11%FAMILY RESOURCES: $4k → 11%FAMILY RESOURCES: $4k → 11%FAMILY RESOURCES: $4k → 11%FAMILY RESOURCES: $4k → 11%FAMILY RESOURCES: $4k → 11%FAMILY RESOURCES: $3k → 11%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

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.

03Your edge
repeat funding

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.

98%of every dollar goes to organizations you’ve funded before.
$2.3M · 32 repeat orgs$49k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +20% since the first grant, against +11% for the ones you funded once.

32 repeat relationships — 31 still active in FY2025, 1 since wound down; 1 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

32
7

Total granted

$2.3M
$44k

Median revenue growth · since first grant

+20%
+11%

Still filing today

53%
29%

New vs renewed · share of each year

In FY2025, 99% of grant dollars renewed an existing relationship; $4k went to new ones.

50%100%’20’21’22’23’24’25
RenewedFirst-time

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

’20’21’22’23’24’25
HealthEducationHuman ServicesHousing & ShelterAnimalsPhilanthropyOther

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

  • TK
    THE KINGSLEY ASSOCIATION
    6× · 2020–2025 · $233k · revenue +79%
  • PS
    Presbyterian Seniorcare Foundation
    6× · 2020–2025 · $117k · revenue +35%
  • CU
    CHATHAM UNIVERSITY
    6× · 2020–2025 · $117k · revenue +13%

Funded once

  • EC
    EASTMINSTER CHURCH WOMEN TRUST FUNDS
    one grant, 2024 · $12k
  • PT
    PITTSBURGH THEOL SM OF US PRESB CH IN US
    one grant, 2024 · $8k
  • SH
    STBARNABAS HEALTH SYSTEMINC
    one grant, 2020 · $7k · revenue +11%

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

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.

1
Wrc Pennsylvania Memorial Home

Wrc pennsylvania memorial home's mission is to provide choices for generations. built on a not-for-profit foundation of caring, the organization offers residential and personal care, home and community-based services, skilled and…

Health
2
Highlands Hospital

Highlands hospital is committed to providing health care to the community in a competent, nurturing and healing environment. our staff will provide support in times of crisis and furnish the resources necessary to promote a healthy…

Health
3
Upmc Western Maryland Corporation

The mission of upmc western maryland is to serve our community by providing outstanding patient care and to shape tomorrow's health system through clinical & technological innovation, research and education.

Health
4
University of Maryland Pediatric Associates Pa

Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…

Health
5
University of Maryland Anesthesiology Associates Pa

Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…

6
University of Maryland Physicians Pa

Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…

7
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
8
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…

9
University of Maryland Family Medicine Associates Pa

Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…

10
Penn Highlands Healthcare Inc

Our community-based and controlled health care system exists to improve regional access to a wide array of premier primary care and advanced health services while supporting a reverence for life and the worth and dignity of each individual.

Health
11
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
12
Penn State Health Hampden Medical Center

Penn state health hampden medical center's mission is to continually improve the health and well-being of the people in pennsylvania. the organization provides patients with excellent, compassionate and culturally responsive and equitable…

Health

For reference, the grantee most central to the portfolio’s shape is St Margaret Foundation and the most unlike its peers is Chatham University. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

Your grantees are a median of 55 years old; the field is 20. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number16%0%<5yr12%0%5–10yr19%5%10–20yr21%24%20–35yr16%19%35–55yr16%52%55yr+
THE FIELDby orgYOUR MONEYby value16%0%<5yr12%0%5–10yr19%2%10–20yr21%23%20–35yr16%6%35–55yr16%69%55yr+

The field is 16% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close 0.0% lost their exemption, against 8% of the field you don’t fund.

orgs you fund
0.0%0/22
the rest of the field
8%
764/9,884

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

04the grantee network

19 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 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 19 of the 40 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.

0
Load-bearing (≥25% of a budget)
3
Early backer (in before they grew)
19/19
Grantees still filing
14/19
Grew since you first funded

Where your money sits — by cause, then by grantee

ALLEGHENY GENERAL HOSPITAL — $466,144 · OtherALLEGHENY GENERAL HOSPITALTHE KINGSLEY ASSOCIATION — $233,072 · OtherTHE KINGSLEY ASSOCIATIONPRESBYTERIAN CHURCH USA FOUNDATION — $198,112 · OtherPRESBYTERIAN CHURCH USA FOUNDATIONIndividual grant recipient — $116,532 · OtherIndividual grant recipientEASTMINSTER UNITED PRESBYTERIAN CHURCH — $116,532 · OtherEASTMINSTER UNITED PRESBYTERIAN CHURCHFORBES HEALTH FOUNDATION — $116,532 · OtherFORBES HEALTH FOUNDATIONEASTMINSTER CHURCH WOMEN TRUST — $58,408 · Other+17 more — $279,646 · Other+17 moreST BARNABAS CHARITIES INC — $51,437 · HealthST BARNAB…CHILDREN'S HOSPITAL OF PITTSBURGH FOUNDATION — $46,616 · HealthCHILDREN'…BREATHE PENNSYLVANIA — $46,616 · HealthBREATHE P…EYE AND EAR FOUNDATION — $23,308 · HealthEYE AND E…ST MARGARET FOUNDATION — $23,308 · HealthST MARGAR…+1 more — $1,920 · HealthCHATHAM UNIVERSITY — $116,532 · EducationCHATHAM U…WESTMINSTER COLLEGE — $46,616 · EducationWESTMINST…WESTERN PENNSYLVANIA SCHOOL FOR THE DEAF — $23,308 · EducationWESTERN P…YOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER PITTSBURGH — $93,232 · Human ServicesMARS HOME FOR YOUTH FOUNDATION — $46,616 · Human ServicesFAMILY RESOURCES — $23,308 · Human ServicesPresbyterian Seniorcare Foundation — $116,532 · Housing & ShelterHUMANE ANIMAL RESCUE — $51,437 · AnimalsPASSAVANT HOSPITAL FOUNDATION — $23,308 · PhilanthropyBOYS AND GIRLS CLUBS OF WESTERN PENNSYLVANIA — $11,652 · Youth Development
Other$1,584,978Health$193,205Education$186,456Human Services$163,156Housing & Shelter$116,532Animals$51,437Philanthropy$23,308Youth Development$11,652

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetTHE KINGSLEY ASSOCIATION — $233,072 over 6y, 2.4% of budgetPresbyterian Seniorcare Foundation — $116,532 over 6y, 0.6% of budgetCHATHAM UNIVERSITY — $116,532 over 6y, 0.0% of budgetYOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER PITTSBURGH — $93,232 over 6y, 0.1% of budgetHUMANE ANIMAL RESCUE — $51,437 over 6y, 0.1% of budgetST BARNABAS CHARITIES INC — $51,437 over 6y, 0.7% of budgetCHILDREN'S HOSPITAL OF PITTSBURGH FOUNDATION — $46,616 over 6y, 0.0% of budgetMARS HOME FOR YOUTH FOUNDATION — $46,616 over 6y, 1.4% of budgetWESTMINSTER COLLEGE — $46,616 over 6y, 0.0% of budgetBREATHE PENNSYLVANIA — $46,616 over 6y, 0.9% of budgetEYE AND EAR FOUNDATION — $23,308 over 6y, 0.1% of budgetST MARGARET FOUNDATION — $23,308 over 6y, 0.2% of budgetFAMILY RESOURCES — $23,308 over 6y, 0.1% of budgetPRESSLEY RIDGE — $23,308 over 6y, 0.0% of budgetWESTERN PENNSYLVANIA SCHOOL FOR THE DEAF — $23,308 over 6y, 0.0% of budgetPASSAVANT HOSPITAL FOUNDATION — $23,308 over 6y, 0.2% of budgetBOYS AND GIRLS CLUBS OF WESTERN PENNSYLVANIA — $11,652 over 6y, 0.0% of budgetSTBARNABAS HEALTH SYSTEMINC — $6,831 over 1y, 0.1% of budgetMARY & ALEXANDER LAUGHLIN CHILDREN'S CENTER — $1,920 over 1y, 0.1% of budget
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 THE KINGSLEY ASSOCIATION
  • Who funds Presbyterian Seniorcare Foundation
  • Who funds CHATHAM UNIVERSITY
  • Who funds YOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER PITTSBURGH
  • Who funds HUMANE ANIMAL RESCUE
  • Who funds ST BARNABAS CHARITIES INC
  • Who funds CHILDREN'S HOSPITAL OF PITTSBURGH FOUNDATION
  • Who funds MARS HOME FOR YOUTH FOUNDATION
  • Who funds WESTMINSTER COLLEGE
  • Who funds BREATHE PENNSYLVANIA
  • Who funds EYE AND EAR FOUNDATION
  • Who funds ST MARGARET FOUNDATION
  • Who funds FAMILY RESOURCES
  • Who funds PRESSLEY RIDGE
  • Who funds WESTERN PENNSYLVANIA SCHOOL FOR THE DEAF
  • Who funds PASSAVANT HOSPITAL FOUNDATION
  • Who funds BOYS AND GIRLS CLUBS OF WESTERN PENNSYLVANIA
  • Who funds STBARNABAS HEALTH SYSTEMINC
  • Who funds MARY & ALEXANDER LAUGHLIN CHILDREN'S CENTER

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.

The Pittsburgh FoundationPA30.1× affinity13 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Pittsburgh Foundation · M L Mason Mem Fund 12-26-35 · M L Mason Memorial Fund Sch B · Lockhart James H & Florence D · Hillman Family Foundations · Allegheny Foundation · The Jack Buncher Foundation · Staunton Farm Foundation 540-054 Dba Staunton Farm Foundation · Richard King Mellon Foundation · The United Way of Southwestern Pennsylvania · Tickets for Kids Foundation · Brooks Charles for Charities

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 Mason Martha Lockhart 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.

2024
202122232425
no gov · 00%0%1%3%5%your share of their income ↑0%5%10%15%20%share of the org’s income from government
    no gov moneyreceives it· size = income
    0get no government money at all
    3report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–20%
    typical government reliance, FY2025

    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.

    On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 40 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your 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. How we build these →

    Generated from your IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

    Source object · view filing

    More from the funding graph