· Private foundation
Charles B & Louis R Perini Family
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 FY2020–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k35 grants · $70k
- $10k–50k1 grant · $10k
| Recipient | Amount |
|---|---|
| MASSACHUSETTS INSTITUTE OF TECHNOLOGY | $10,000 |
| BAYPATH HUMANE SOCIETY | $8,300 |
| PAN-MASS CHALLENGE | $8,100 |
| EMERSON HEALTH CARE FOUNDATION | $5,000 |
| ENJOY LIFE EDUCATION INC | $5,000 |
| LADIES AUXILIARY OF HISPANIC APOSTOLATE | $4,300 |
| THE CAT CONNECTION | $3,000 |
| ST MICHAEL SPECIAL SCHOOL | $3,000 |
| WOMEN'S NEW LIFE CENTER | $3,000 |
| ST JUDE CHILDREN'S RESEARCH HOSPITAL | $3,000 |
| NATIONAL MARINE LIFE CENTER | $3,000 |
| DANA-FARBER CANCER INSTITUTE | $3,000 |
| SARAH LAWRENCE COLLEGE | $2,500 |
| ROSIE'S PLACE INC | $2,000 |
| FOUNDATION FOR SARCOIDOSIS RESEARCH | $2,000 |
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 (FY24–25, $3k) land where the poverty rate runs at 8%, against an area that typically sits at 11%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-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 +13% since the first grant, against +6% for the ones you funded once.
48 repeat relationships — 29 still active in FY2025, 19 since wound down; 5 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, 93% 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
PAN-MASSACHUSETTS CHALLENGE INC3× · 2023–2025 · $30k · revenue +6%- ELENJOY LIFE EDUCATION INC3× · 2023–2025 · $20k · revenue +50%
- EHEMERSON HEALTH CARE FOUNDATION INC3× · 2023–2025 · $9k · revenue +34%
Funded once
- GTGIVEWELL TOP CHARITIES FUNDone grant, 2022 · $6k
- MAMOUNT AUBURN HOSPITALone grant, 2024 · $5k · revenue 0%
- RMRONALD MCDONALD HOUSEone grant, 2023 · $5k
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 Marine Biological Laboratory (MBL) is a world-renowned center for biological discovery and training that is notably affiliated with more than 60 Nobel Prize winners. Research is conducted by full-time faculty as well as hundreds of the…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Sanford burnham prebys medical discovery institute's mission is to advance the biomedical sciences by cultivating the next generation of scientific leaders, providing meaningful opportunities for researchers of all backgrounds to learn,…
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
Provider of pediatric healthcare, education, research & community service
Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.
Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.
The mission of the institute is to translate basic genetic and molecular mechanisms of schizophrenia and related developmental brain disorders into clinical advances that change the lives of affected individuals. it is catalyzing a new…
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.
Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.
Whitehead institute forges new frontiers in science, uncovering insights today that unlock the potential of tomorrow. our advances in genetics and genomics are now enabling us to tackle the complexities of life with unprecedented depth and…
Mass general brigham incorporated is developing an integrated health care delivery system throughout the region that offers patients a continuum of coordinated, high-quality care.
For reference, the grantee most central to the portfolio’s shape is Emerson Health Care Foundation Inc and the most unlike its peers is Cat Connection 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 48 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) — 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 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.
36 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. 36 of the 81 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 PAN-MASSACHUSETTS CHALLENGE INC ↗
- Who funds Massachusetts Institute of Technology ↗
- Who funds ENJOY LIFE EDUCATION INC ↗
- Who funds Dana-Farber Cancer Institute Inc ↗
- Who funds EMERSON HEALTH CARE FOUNDATION INC ↗
- Who funds SARAH LAWRENCE COLLEGE ↗
- Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds FOUNDATION FOR SARCOIDOSIS RESEARCH ↗
- Who funds CAT CONNECTION INC ↗
- Who funds MOUNT AUBURN HOSPITAL ↗
- Who funds NATIONAL MARINE LIFE CENTER INC ↗
- Who funds TRUSTEES OF THE COLLEGE OF THE HOLY CROSS ↗
- Who funds RONALD MCDONALD HOUSE CHARITIES OF SOUTH LOUISIANA INC ↗
- Who funds TFI DIGITAL ARCHIVE ↗
- Who funds ASSOCIATION TO PRESERVE CAPE COD INC ↗
- Who funds VINFEN CORPORATION ↗
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: Cape Cod Foundation Inc · Cape Cod Five Cents Savings Bank Charitable Foundation Trust · Boston Foundation Inc · American Tower Corporation Foundation Inc · National Philanthropic Trust · Eastern Bank Foundation · Renaissance Charitable Foundation Inc · AbbVie Foundation · Shell USA Company Foundation · Ge Aerospace Foundation · The Pfizer Foundation Inc · Morgan Stanley Global Impact Funding Trust Inc
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 Charles B & Louis R Perini Family 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, a single department, or state — and drag the year to watch it move.
- Association to Preserve Cape Cod Inc — 100% of income from government
- Vinfen Corporation — 83% of income from government
- Buzzards Bay Coalition — 37% of income from government
- Massachusetts Institute of Technology — 35% of income from government
- Sistersatheart Inc — 24% of income from government
- National Marine Life Center Inc — 16% of income from government
- Trustees of Boston University — 12% of income from government
- President and Fellows of Harvard College — 7% of income from government
- Dana-Farber Cancer Institute Inc — 7% of income from government
- Atlantic White Shark Conservancy Inc — 5% of income from government
- Mystic Seaport Museum Inc — 5% of income from government
- Mount Auburn Hospital — 5% of income from government
- Rosie's Place Inc — 0% of income from government
- Pan-Massachusetts Challenge Inc — 0% of income from government
- Milton Academy — 0% of income from government
- Shriners Hospitals for Children — 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 Charles B & Louis R Perini Family?
Find your warmest path to Charles B & Louis R Perini Family 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.