· Private foundation
The Mountz Family Foundation
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.
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.
By grant size · FY2025
- Under $10k4 grants · $10k
- $10k–50k4 grants · $72k
- $250k+1 grant · $280k
| Recipient | Amount |
|---|---|
| MIT | $280,000 |
| DEERFIELD ACADEMY | $25,000 |
| BOSTON CHILDREN'S HOSPITAL | $22,200 |
| THE FENN SCHOOL | $12,500 |
| CARROLL SCHOOL | $12,500 |
| NATIONAL INVENTORS HALL OF FAME | $5,000 |
| THE UMBRELLA ARTS CENTER | $2,500 |
| PAN MASS CHALLENGE | $1,000 |
| KHAN ACADEMY | $1,000 |
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.
Dollar for dollar, your grants (FY17–25) land where the poverty rate runs at 13%, against an area that typically sits at 7%. 99% of your 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 +46% since the first grant, against -7% for the ones you funded once.
15 repeat relationships — 8 still active in FY2025, 7 since wound down; 1 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; $25k 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
- CHChildren's Hospital Corporation9× · 2017–2025 · $621k · revenue +69%
- NBNASHOBA BROOKS SCHOOL OF CONCORD INC4× · 2021–2024 · $107k · revenue +6%
- LMLEXINGTON MONTESSORI SCHOOL INC3× · 2017–2019 · $35k · revenue +46%
Funded once
- SISANDBOX INNOVATION FUNDone grant, 2018 · $50k
- LFLMS Fund to Preserve the LMS Woodsone grant, 2017 · $25k
- NRNASHOBA REGIONAL SCHOOL DISTRICTone 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 bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
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.
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
The peak school seeks to ignite a passion for learning, to develop students of diverse talents and backgrounds who think critically and act with integrity, and to graduate compassionate, confident, capable students who will embrace their…
We create confident learners who lead lives of intellectual curiosity, self-knowledge, and social responsibility.
Northfield mount hermon educates the head, heart and hands of our students. we engage their intellect, compassion, and talents, empowering them to act with humanity and purpose.
Darrow school is dedicated to serving students with diverse backgrounds and abilities, building on each student's talents and interests to inspire enduring confidence for success in college and life. this mission is accomplished through…
A preschool through 12th grade, private, college preparatory school. the school's mission statement is "together, cultivating the best in each for the benefit of all."
Meadowbrook knows, loves, and challenges every child. together, as a diverse community with high academic, ethical and social standards, we nurture character, promote confidence, inspire creativity and foster critical thinking skills as we…
Innovative and full of heart, mark day school nurtures each child to pursue their curiosity, think critically, embrace challenge with courage and joy, and work in partnership with others to build more caring and inclusive communities.
Organization's mission: boston university is an international, comprehensive, private research university, committed to educating students to be reflective, resourceful individuals ready to live, adapt, and lead in an interconnected world.…
The Foundation's mission is to provide pathology services primarily to patients at Boston Children's Hospital and at satellite locations. The Foundation carries on and promotes basic and applied medical research and education in the field…
For reference, the grantee most central to the portfolio’s shape is Trustees of Deerfield Academy and the most unlike its peers is Cottonwood Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
16 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. 16 of the 28 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 Children's Hospital Corporation ↗
- Who funds Massachusetts Institute of Technology ↗
- Who funds NASHOBA BROOKS SCHOOL OF CONCORD INC ↗
- Who funds LEXINGTON MONTESSORI SCHOOL INC ↗
- Who funds THE FENN SCHOOL ↗
- Who funds THE CARROLL SCHOOL ↗
- Who funds TRUSTEES OF DEERFIELD ACADEMY ↗
- Who funds FAMILY REACH FOUNDATION ↗
- Who funds NATIONAL INVENTORS HALL OF FAME INC ↗
- Who funds PAN-MASSACHUSETTS CHALLENGE INC ↗
- Who funds KHAN ACADEMY INC ↗
- Who funds MAYO CLINIC ↗
- Who funds COTTONWOOD FOUNDATION ↗
- Who funds MATHCOUNTS Foundation ↗
- Who funds THE BOSTON ATHLETIC ASSOCIATION ↗
- Who funds The Side-Out Foundation ↗
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: Fidelity Foundation · Boston Foundation Inc · Verizon Foundation · Morgan Stanley Global Impact Funding Trust Inc · The Pfizer Foundation Inc · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Donor Advised Charitable Giving 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 The Mountz 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.
- Massachusetts Institute of Technology — 35% of income from government
- Children's Hospital Corporation — 10% of income from government
- Pan-Massachusetts Challenge 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.