· Private foundation
Mazar Family Charitable Foundation Trust
Its FY2024 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 FY2018–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k46 grants · $119k
- $10k–50k19 grants · $274k
- $50k–250k3 grants · $220k
| Recipient | Amount |
|---|---|
| OSA CONSERVATION | $100,000 |
| VILLAGE & WILDERNESS | $70,000 |
| METACOMET LAND TRUST | $50,000 |
| NATURE CONSERVANCY | $30,000 |
| UNICEF | $20,000 |
| PATHFINDER INTERNATIONAL | $20,000 |
| FOS FEMINISTA | $20,000 |
| BIODIVERSITY WORKS | $17,500 |
| NEW ENGLAND FUTBOL CLUB | $16,050 |
| CARE | $15,000 |
| DOCTORS WITHOUT BORDERS | $15,000 |
| CENTER FOR BIOLOGICAL DIVERSITY | $12,000 |
| GREAT POND FOUNDATION | $12,000 |
| Individual grant recipient | $12,000 |
| WBUR BOSTON UNIVERSITY | $12,000 |
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 (FY18–24, $21k) land where the poverty rate runs at 16%, against an area that typically sits at 10%. 97% 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 +53% since the first grant, against +13% for the ones you funded once.
72 repeat relationships — 53 still active in FY2024, 19 since wound down; 12 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, 93% of grant dollars renewed an existing relationship; $41k 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
- VAVillage and Wilderness Project Inc2× · 2022–2024 · $135k · revenue +38%
- BIBIODIVERSITYWORKS INC7× · 2018–2024 · $122k · revenue +327%
INTERNATIONAL PLANNED PARENTHOOD FEDERATION WESTERN HEMISPHERE REGION7× · 2018–2024 · $120k · revenue +24%
Funded once
- MVMARTHA'S VINEYARD PRESERVATION TRUST INCone grant, 2023 · $8k · revenue +21%
- TDTHE DRUM WORKSHOPone grant, 2019 · $2k
- EFESSENTIAL FOODS PROJECT - WHEELHOUSEone grant, 2020 · $1k
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.
Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.
Ci works to spotlight and secure the critical benefits that nature provides to humanity.
Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)
Wri is committed to creating change that improves people's lives and ensures the natural world can thrive. (see schedule o)wri's bold vision requires a formula for success we call "count it. change it. scale it.":- count it: our work is…
Friends of the earth strives for a more healthy and just world by defendng the environment and human health while advancing social and economic justice by conducting research and education, transforming the economy so it protects the…
The purpose of rainforest foundation us is to support indigenous peoples and forest communities in their efforts to secure their lands, protect their environment, and uphold their rights.
Ocean conservancy unites science, people, and policy to protect our ocean, today and for generations to come.
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…
To establish and promote programs to protect the global climate, forests, wildlife and the natural environment, through research, advocacy, and investigation.
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
To drive transformational adaptation to protect communities across the country from higher seas, stronger storms, and more frequent flooding.
To advocate for policy changes by governments and corporations in order to preserve ocean life and return the oceans to their former abundance.
For reference, the grantee most central to the portfolio’s shape is Environmental Defense Fund Incorporated and the most unlike its peers is Lost Sierra Food Project. 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 42 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) — 4% of your grantees by number, and just 0% 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.
81 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. 81 of the 115 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 THE NATURE CONSERVANCY ↗
- Who funds Village and Wilderness Project Inc ↗
- Who funds BIODIVERSITYWORKS INC ↗
- Who funds PATHFINDER INTERNATIONAL ↗
- Who funds INTERNATIONAL PLANNED PARENTHOOD FEDERATION WESTERN HEMISPHERE REGION ↗
- Who funds UNITED STATES FUND FOR UNICEF ↗
- Who funds COOPERATIVE FOR ASSISTANCE AND RELIEF EVERYWHERE INC ↗
- Who funds Save The Children Federation Inc ↗
- Who funds NEW ENGLAND FUTBOL CLUB INC ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds AMERICAN INDIAN COLLEGE FUND ↗
- Who funds The Great Pond Foundation Inc ↗
- Who funds CENTER FOR BIOLOGICAL DIVERSITY INC ↗
- Who funds METACOMET LAND TRUST INC ↗
- Who funds International Rescue Committee INC ↗
- Who funds Feeding America ↗
- Who funds THE UNION OF CONCERNED SCIENTISTS INC ↗
- Who funds ISLAND HOUSING TRUST CORPORATION ↗
- Who funds ANIMAL WELFARE INSTITUTE ↗
- Who funds AMERICAN HUMANE ASSOCIATION ↗
- Who funds EQUAL JUSTICE INITIATIVE ↗
- Who funds HUMAN RIGHTS WATCH INC ↗
- Who funds ISLAND GROWN INITIATIVE LTD ↗
- Who funds TECHNOSERVE INC ↗
- Who funds ENVIRONMENTAL DEFENSE FUND INCORPORATED ↗
- Who funds THE STUDENT CONSERVATION ASSOCIATION INC ↗
- Who funds THE TRUSTEES OF RESERVATIONS ↗
- Who funds JANE GOODALL INSTITUTE FOR WILDLIFE RESEARCH EDUCATION AND CONSERVATION ↗
- Who funds HUMANE FARMING ASSOCIATION ↗
- Who funds THE CARTER CENTER INC ↗
- Who funds MASSACHUSETTS AUDUBON SOCIETY INC ↗
- Who funds NATIVE PLANT TRUST INC ↗
- Who funds VINEYARD CONSERVATION SOCIETY 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: South Mountain Company Foundation · The Kohlberg Foundation Inc · Martha's Vineyard Bank Charitable Foundation Inc · Boston Foundation Inc · Stonehouse Inc · Henry & Anne Garfinkle Foundation Inc · Cardinal Brook Trust · Healey Family Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · T Rowe Price Program for Charitable Giving Inc · Analog Devices Foundation · Eastern Bank 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 Mazar Family Charitable Foundation Trust 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.
- Woods Hole Oceanographic Institution — 63% of income from government
- Martha's Vineyard Community Foundation Inc — 34% of income from government
- Save the Children Federation Inc — 30% of income from government
- Vermont Community Garden Network Inc — 28% of income from government
- Metacomet Land Trust Inc — 25% of income from government
- Community Harvest Project Inc — 18% of income from government
- Freedom Reads Inc — 12% of income from government
- Woodwell Climate Research Center Inc — 11% of income from government
- Pine Street Inn Inc — 11% of income from government
- Children's Hospital Corporation — 10% of income from government
- Connecticut Children's Medical Center — 5% of income from government
- Martha's Vineyard Preservation Trust Inc — 4% of income from government
- Native Plant Trust Inc — 3% of income from government
- The Trustees of Reservations — 2% of income from government
- Island Housing Trust Corporation — 1% of income from government
- Massachusetts Audubon Society Inc — 1% of income from government
- Worcester County Food Bank Inc — 1% of income from government
- Biodiversityworks Inc — 0% of income from government
- Emerson College — 0% of income from government
- Island Grown Initiative Ltd — 0% 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.
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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.