· Private foundation
Rk Mellon Family Foundation
Its FY2024 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 FY2019–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k82 grants · $282k
- $10k–50k122 grants · $1.9M
- $50k–250k7 grants · $493k
| Recipient | Amount |
|---|---|
| LOYALHANNA ASSOCIATION | $130,000 |
| NATIONAL GALLERY OF ART | $100,000 |
| WESTMORELAND MUSEUM OF ART | $62,500 |
| LATROBE AREA HOSPITAL CHARITABLE FOUNDATION | $50,000 |
| CAPE COD HEALTHCARE INC | $50,000 |
| CAPE COD HEALTHCARE INC | $50,000 |
| EASTERN LONG ISLAND HOSPITAL FOUNDATION | $50,000 |
| HILLSDALE COLLEGE INDEPENDENCE FOUNDATION | $40,000 |
| PASSION WORKS | $30,000 |
| WOODS HOLE PUBLIC LIBRARY | $30,000 |
| CHUBB INTERNATIONAL SHOOTING SPORTS INC | $30,000 |
| SKIDMORE COLLEGE | $30,000 |
| ST MICHAEL'S OF THE VALLEY EPISCOPAL CHURCH | $30,000 |
| MEMORIAL SLOAN KETTERING CANCER CENTER | $26,000 |
| MASS GENERAL BRIGHAM INC | $25,000 |
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, $694k) land where the poverty rate runs at 12%, against an area that typically sits at 9%. 86% 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.
Which US states your grants reach
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 +31% since the first grant, against +18% for the ones you funded once.
168 repeat relationships — 108 still active in FY2024, 60 since wound down; 37 grantees were first funded in FY2024 (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 FY2024, 86% of grant dollars renewed an existing relationship; $360k 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
- VSVALLEY SCHOOL OF LIGONIER6× · 2019–2024 · $784k · revenue +61%
- NGNational Gallery of Art6× · 2019–2024 · $476k · revenue +40%
THE CONSERVATION FUND A NONPROFIT CORPORATION2× · 2021–2023 · $470k · revenue +41%
Funded once
- SOSPECIAL OPERATIONS CARE FUND INCone grant, 2022 · $100k · revenue -46%
- SISWP INC dba SHADOW WARRIORSone grant, 2023 · $60k · revenue -47%
- PFPHOEBE FOUNDATION INCone grant, 2023 · $50k
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.
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
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,…
Eastern national promotes the public's understanding and support of america's national parks and other public trust partners by providing quality educational experiences, products and services.
Naples zoo is accredited by the american zoo & aquarium association (aza) and has numerous animal exhibits placed on its 45-acre site. (continued on schedule o)each exhibit is unique and designed to simulate typical conditions for the…
The purpose of the water research foundation (wrf) is a definitive research organization to advance the science of all things water to better meet the evolving needs of its subscribers and the water sector. to engage exclusively in…
The organization's mission is to conserve and promote new england's native plants to ensure healthy, biologically diverse landscapes.
To preserve the unique character and natural resources of harvard.
To sustain, restore, and enhance the nation's fish, wildlife, plants, and habitats.
See schedule onylcv is a non-partisan policy making and political action organization that works to make environmental protection a top priority with elected officials, decision-makers and the voters by evaluating incumbent performance and…
To establish and promote programs to protect the global climate, forests, wildlife and the natural environment, through research, advocacy, and investigation.
The wildlands trust works throughout southeastern massachusetts to conserve and permanently protect native habitats, farmland, and lands of high ecologic and scenic value that serve to keep our communities healthy and our residents…
The npr foundation ("foundation") is organized and operated exclusively for the benefit of its sole supported organization, national public radio, inc. ("npr inc."). the foundation supports npr inc. through various activities such as…
For reference, the grantee most central to the portfolio’s shape is Convoy of Hope and the most unlike its peers is Quissett Harbor Preservation Trust Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 33 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 3% of your grantees by number, and just 2% of your money.
The orgs you fund almost never close — 1% lost their exemption, against 13% 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.
269 grantees tracked through their own filings, 2017–2026.
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 2017–2026, not grant rows in a single year — so this will not match the grant count on the cover. 269 of the 324 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
Showing your 200 largest grantees by grant value.
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 Loyalhanna Association Inc ↗
- Who funds VALLEY SCHOOL OF LIGONIER ↗
- Who funds National Gallery of Art ↗
- Who funds THE CONSERVATION FUND A NONPROFIT CORPORATION ↗
- Who funds WESTMORELAND MUSEUM OF AMERICAN ART ↗
- Who funds GALLMANN AFRICA CONSERVANCY INC ↗
- Who funds EASTERN LONG ISLAND HOSPITAL FOUNDATION ↗
- Who funds Maine Coast Heritage Trust ↗
- Who funds UNIVERSITY OF PITTSBURGH ↗
- Who funds PASSION WORKS ↗
- Who funds BYERSCHOOL FOUNDATION ↗
- Who funds WOODS HOLE PUBLIC LIBRARY ↗
- Who funds FALMOUTH ACADEMY INC ↗
- Who funds TALL TIMBERS RESEARCH INC ↗
- Who funds LIGONIER VALLEY FIRE COMPANIES ↗
- Who funds LATROBE AREA HOSPITAL CHARITABLE FOUNDATION ↗
- Who funds THE PITTSBURGH FOUNDATION ↗
- Who funds FORT LIGONIER ASSOCIATION ↗
- Who funds Old Westbury Gardens Inc ↗
- Who funds SKIDMORE COLLEGE ↗
- Who funds WESTMORELAND COUNTY FOOD BANK INC ↗
- Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
- Who funds FRIENDS ACADEMY ↗
- Who funds NATIONAL MARINE LIFE CENTER INC ↗
- Who funds ST ANNE'S-BELFIELD INC ↗
- Who funds PAWS4PEOPLE INC ↗
- Who funds WOODMERE ART MUSEUM ↗
- Who funds CHUBB INTERNATIONAL SHOOTING SPORTS INC ↗
- Who funds WEISER MEMORIAL HOSPITAL FOUNDATION ↗
- Who funds SPECIAL OPERATIONS CARE FUND INC ↗
- Who funds ST PAUL'S SCHOOL ↗
- Who funds CANINE COMPANIONS FOR INDEPENDENCE INC ↗
- Who funds MASS GENERAL BRIGHAM INCORPORATED ↗
- Who funds LIGONIER VALLEY SCHOOL DISTRICT FOUNDATI ↗
- Who funds COMMUNITY ACTION OF SOUTHOLD TOWN INC ↗
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 · Katherine Mabis McKenna Foundation · Eden Hall Foundation · Summit Foundation · Hillman Family Foundations · The Moore Charitable Foundation Inc · The Bessemer Giving Fund · Laurel Ridge Foundation Inc · The Simpson Family Foundation U/A Dtd 10/19/1999 · Eqt Foundation · The New York Community Trust
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 Rk Mellon Family 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.
- Massachusetts Institute of Technology — 35% of income from government
- National Marine Life Center Inc — 16% of income from government
- Move United — 16% of income from government
- Sea Education Association Inc — 12% of income from government
- Tall Timbers Research Inc — 10% of income from government
- Warrior Canine Connection Inc — 5% of income from government
- Nantucket Conservation Foundation Inc — 4% of income from government
- Chesapeake Bay Foundation Inc — 2% of income from government
- Boys & Girls Club of Martin County — 2% of income from government
- Sea Turtle Conservancy — 1% 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 Rk Mellon Family Foundation?
Find your warmest path to Rk Mellon 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.