· Private foundation
The Linaburg 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.
| Recipient | Amount |
|---|---|
| PITTSBURGH CULTURAL TRUST | $6,000 |
| Individual grant recipient | $2,500 |
| PITTSBURGH BALLET THEATRE | $2,500 |
| PITTSBURGH SYMPHONY ASSOCIATION | $2,500 |
| PITTSBURGH SYMPHONY ASSOCIATION | $2,000 |
| PITTSBURGH EARTH DAY | $1,500 |
| UPMC MERCY - SR GUERIN SOCIAL FD | $1,000 |
| PITTSBURGH SYMPHONY ASSOCIATION | $1,000 |
| SENATOR JOHN HEINZ HISTORY CENTER | $1,000 |
| PITTSBURGH SYMPHONY ASSOCIATION | $800 |
| PITTSBURGH PARKS CONSERVANCY | $600 |
| ALLIES FOR HEALTH & WELLBEING | $500 |
| HISTORICAL SOCIETY OF MT LEBANON | $500 |
| MATTRESS FACTORY | $500 |
| ST CLAIR HEALTH FOUNDATION | $500 |
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 (FY17–19, $1k) land where the poverty rate runs at 12%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
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.
27 repeat relationships — 12 still active in FY2025, 15 since wound down; 2 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, 94% of grant dollars renewed an existing relationship; $2k 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
- HSHISTORICAL SOCIETY OF WESTERN PENNSYLVANIA5× · 2020–2025 · $40k · revenue +181%
- PCPITTSBURGH CULTURAL TRUST8× · 2018–2025 · $40k · revenue +6%
- PBPITTSBURGH BALLET THEATRE INC8× · 2017–2025 · $26k · revenue +46%
Funded once
- LHLADIES HOSPITAL AID SOCIETYone grant, 2017 · $10k
- CHCHILDREN'S HOSPITAL OF PITTSBURGH FOUNDATIONgraduatedone grant, 2018 · $2k · revenue +49%
- CMCARNEGIE MUSEUM OF ARTone grant, 2018 · $2k
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.
The mission of pittsburgh public theater is to provide artistically diverse theatrical experiences of the highest quality. pittsburgh public theater also strives to serve, challenge, stimulate, and (continued on schedule o)
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,…
To protect, preserve, and promote the scenic resources of southwestern pennsylvania.
Pittsburgh festival opera presents innovative opera for imaginative audiences. pittsburgh festival opera is pittsburgh's modern music drama company and, as such, focuses on creating new works, on reinterpreting older works in new ways, on…
The mission of pittsburgh arts & lectures is to connect celebrated authors with the community, elevate civic discourse, and inspire creativity and a passion for the literary arts. our commitment to knowledge, learning, integrity, and…
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…
To create a vibrant, responsible, and sustainable film and digital media sector in southwestern pennsylvania.
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;…
Challenging, educating and entertaining pittsburgh audiences by providing high quality theatre at reasonable prices, while focusing on irish, english and classical works.
By sharing resources and fostering meaningful relationships that strengthen the region's creative community, the greater pittsburgh arts council builds a more resourced, connected, and informed arts sector, empowering artists and arts…
The corporation advances excellence in the arts, including studio, media, and creative writing. to achieve its mission, the corporation provides equipment and facilities for individual artists, conducts educational programs, and stimulates…
For reference, the grantee most central to the portfolio’s shape is Pittsburgh Cultural Trust and the most unlike its peers is Little Sisters of the Poor. 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 39 years old; the field is 20. You back the established end — and your money leans older still.
The field is 16% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 8% of the field you don’t fund.
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.
31 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. 31 of the 63 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 HISTORICAL SOCIETY OF WESTERN PENNSYLVANIA ↗
- Who funds PITTSBURGH CULTURAL TRUST ↗
- Who funds PITTSBURGH BALLET THEATRE INC ↗
- Who funds PITTSBURGH EMERGENCY MEDICINE FOUNDATION ↗
- Who funds FRICK ART & HISTORICAL CENTER INC ↗
- Who funds PITTSBURGH OPERA INC ↗
- Who funds PITTSBURGH PARKS CONSERVANCY ↗
- Who funds PITTSBURGH EARTH DAY ↗
- Who funds PITTSBURGH SYMPHONY INC ↗
- Who funds CHILDREN'S HOSPITAL OF PITTSBURGH FOUNDATION ↗
- Who funds THE MATTRESS FACTORY LTD ↗
- Who funds THE CINDERELLA WOMENS COMMITTEE ↗
- Who funds FRIENDS OF MT LEBANON PERCUSSION ↗
- Who funds HISTORICAL SOCIETY OF MOUNT LEBANON ↗
- Who funds PERSAD CENTER INC ↗
- Who funds Animal Friends Inc ↗
- Who funds THE BRASHEAR ASSOCIATION INC ↗
- Who funds SOUTH HILLS INTERFAITH MINISTRIES ↗
- Who funds PROPEL SCHOOLS FOUNDATION ↗
- Who funds CARNEGIE INSTITUTE ↗
- Who funds LOG CABIN INSTITUTE ↗
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: The Pittsburgh Foundation · Hillman Family Foundations · The Grable Foundation · The Heinz Endowments · McCune Foundation Pnc Bank Na · The Fine Foundation · Richard King Mellon Foundation · Eqt Foundation · Upmc Group · Giant Eagle Foundation · Snee-Reinhardt Charitable Foundation · The United Way of Southwestern Pennsylvania
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 The Linaburg 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.
- Wounded Warrior Project Inc — 0% of income from government
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 The Linaburg Foundation?
Find your warmest path to The Linaburg 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.