· Private foundation
Mattis Family 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 FY2020–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k2 grants · $10k
- $10k–50k3 grants · $40k
- $50k–250k3 grants · $230k
| Recipient | Amount |
|---|---|
| GREENWICH COUNTRY DAY SCHOOL | $100,000 |
| EAGLE HILL SCHOOL | $80,000 |
| KRIPALU CENTER FOR YOGA & HEALTH | $50,000 |
| BURNING MAN PROJECT | $20,000 |
| GREENWICH LIBRARY | $10,000 |
| NEIGHBOR TO NEIGHBOR | $10,000 |
| BRUCE MUSEUM | $5,000 |
| GREENWICH HISTORICAL SOCIETY | $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 (FY23–25, $70k) land where the poverty rate runs at 12%, 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.
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 +16% since the first grant, against -3% for the ones you funded once.
13 repeat relationships — 8 still active in FY2025, 5 since wound down.
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, 100% of grant dollars renewed an existing relationship; $0 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
- GCGREENWICH COUNTRY DAY SCHOOL INC6× · 2020–2025 · $385k · revenue +78%
- IMINDIAN MOUNTAIN SCHOOL INC3× · 2020–2022 · $145k · revenue +54%
- KCKRIPALU CENTER FOR YOGA & HEALTH3× · 2023–2025 · $70k · revenue +8%
Funded once
- IGIndividual grant recipientone grant, 2023 · $20k
- IGIndividual grant recipientone grant, 2022 · $20k
- MFM4BL FUNDone grant, 2020 · $20k
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 University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…
National public radio, inc. ("npr") works collaboratively with member public radio station licensees ("member stations") to create a more informed public, one that is challenged and invigorated by a deeper understanding and appreciation of…
The school's mission is grounded in the belief expressed by b. lord buckley that opening the eyes and awakening the mind is the essence of education. guided by that mission for almost a century, buckley has purposely focused on developing…
To bring quality public television programs and resources to communities throughout new jersey and its tri-state neighbors. its content, both on-air and online, aims to reflect the diverse
The philadelphia school educates children for a future that is impossible to know but not impossible to shape. learn here. go anywhere.
Greenwich academy is an independent college-preparatory day school for girls and young women that seeks to foster excellence. for more information see schedule o.its mission is to provide a challenging, comprehensive educational experience…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
New york school of interior design provides the most innovative, immersive, and transformative interior design education in the world, demonstrating the impact of professionally designed interiors on the health, happiness, and well-being…
The florence griswold museum seeks to promote a greater understanding of connecticut's contribution to american art and history through public exhibitions and educational programs.
The mission of rhode island school of design, through its college and museum,is to educate its students and the public in the creation and (see schedule o)appreciation of works of art and design, to discover and transmit knowledge and to…
The organization's mission is to conserve and promote new england's native plants to ensure healthy, biologically diverse landscapes.
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
For reference, the grantee most central to the portfolio’s shape is Neighbor to Neighbor Inc and the most unlike its peers is The Freecycle Network. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
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 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 19 of the 27 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 GREENWICH COUNTRY DAY SCHOOL INC ↗
- Who funds INDIAN MOUNTAIN SCHOOL INC ↗
- Who funds NEIGHBOR TO NEIGHBOR INC ↗
- Who funds KRIPALU CENTER FOR YOGA & HEALTH ↗
- Who funds THE GREENWICH LIBRARY ↗
- Who funds BURNING MAN PROJECT ↗
- Who funds The Peddie School ↗
- Who funds HIGHLANDER RESEARCH & EDUCATION CENTER INC ↗
- Who funds GIVEDIRECTLY INC ↗
- Who funds All Star Code Inc ↗
- Who funds NEW YORK PUBLIC RADIO ↗
- Who funds BRUCE MUSEUM INC ↗
- Who funds GREENWICH HISTORICAL SOCIETY INC ↗
- Who funds The Freecycle Network ↗
- Who funds PRO PUBLICA INC ↗
- Who funds THE GREENWICH LAND TRUST INC ↗
- Who funds BERKELEY CHESS SCHOOL ↗
- Who funds PLAYWRIGHTS HORIZONS INC ↗
- Who funds SMART KIDS WITH LEARNING DISABILITIES 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: The Goldman Sachs Charitable Gift Fund · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · National Philanthropic Trust · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · The Pfizer Foundation Inc · The Blackbaud Giving Fund · Donor Advised Charitable Giving Inc · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile 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 Mattis 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, a single department, or state — and drag the year to watch it move.
- Bruce Museum 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 Mattis Family Foundation?
Find your warmest path to Mattis 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.