· Private foundation
Tremont Street Foundation Inc
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 $10k27 grants · $48k
- $10k–50k1 grant · $25k
| Recipient | Amount |
|---|---|
| WATUPPA ROWING CENTER | $25,000 |
| CONCRETE FOUNDATION | $5,070 |
| BELMONT HILL SCHOOL | $5,000 |
| Individual grant recipient | $5,000 |
| THE GOLD CUP CHALLENGE FOUNDATION | $5,000 |
| NEWHALL FIELDS COMMUNITY FARM | $4,500 |
| UVRF | $2,500 |
| DANA FARBER | $2,000 |
| MCCLEAN HOSPITAL | $2,000 |
| D-HHTHE PROUTY | $2,000 |
| BOSTON SYMPHONY ORCHESTRA | $1,000 |
| ROSIE'S PLACE | $1,000 |
| GREEN MOUNTAIN CLUB | $1,000 |
| ECHO | $1,000 |
| Individual grant recipient | $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.
Your human-services grants (FY19–25, $6k) land where the poverty rate runs at 14%, against an area that typically sits at 8%. 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.
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.
43 repeat relationships — 10 still active in FY2025, 33 since wound down; 18 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, 62% of grant dollars renewed an existing relationship; $28k 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
- BHBELMONT HILL SCHOOL INC9× · 2017–2025 · $47k · revenue +141%
- WRWATUPPA ROWING CENTER INC5× · 2020–2025 · $47k · revenue +359%
- NFNEWHALL FIELDS COMMUNITY FARM INC5× · 2021–2025 · $12k · revenue +124%
Funded once
- NRNATIONAL ROWING FOUNDATION INCone grant, 2021 · $25k
SYRACUSE UNIVERSITYgraduatedone grant, 2020 · $10k · revenue +29%- BSBAY STATE ROWING CENTERone grant, 2019 · $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 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.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
The organization's primary exempt purpose is to provide access to and conduct activities in furtherance of higher education.
Wheaton college provides a transformative liberal arts education, combining theory and practice, for intellectually curious students within a collaborative and vibrant extended community and network that values and strives to create an…
Dean college is a private, residential new england college grounded in a culture and tradition that all students deserve the opportunity to discover and exceed their greatest aspirations. a personal and transformative community since 1865,…
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.
Bates is a college of the liberal arts and sciences, and is a coeducational, nonsectarian, residential college with special commitments to academic rigor, and to assuring in all of its efforts the dignity of each individual, and access to…
Our mission is to ensure that the people of greater boston benefit from a vibrant, resilient, and inclusive waterfront, harbor, and islands; these spaces are equitable, accessible, and adapted to climate change; and to ensure our public,…
Wentworth institute of technology is a nationally recognized private coeducational and residential university of higher education with a mission to empower, inspire and innovate through experiential learning with a core purpose of career…
The mission of the roundtable is to make massachusetts the most desirable place to live, work and do business by engaging private sector executives and public leaders to ensure access to a robust, diverse and talented workforce that…
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…
Western new england university, a comprehensive private institution with a tradition of excellence in teaching and scholarship and a commitment to service, awards undergraduate, master's, and doctoral degrees in various departments from…
For reference, the grantee most central to the portfolio’s shape is Girls Incorporated of Boston and Lynn and the most unlike its peers is Concrete Foundation 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 35 years old; the field is 17. You back the established end — and your money leans older still.
The field is 20% startups (under 5 years old) — 3% of your grantees by number, and just 1% of your money.
The orgs you fund almost never close — 2% lost their exemption, against 11% 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.
42 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. 42 of the 85 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 BELMONT HILL SCHOOL INC ↗
- Who funds WATUPPA ROWING CENTER INC ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds COMMUNITY ROWING INC ↗
- Who funds NEWHALL FIELDS COMMUNITY FARM INC ↗
- Who funds THE DOROTHY AND CHARLES MOSESIAN CENTER FOR THE ARTS INC ↗
- Who funds SEWPPORTIVE FRIENDS INC ↗
- Who funds SYRACUSE UNIVERSITY ↗
- Who funds FRIENDS OF CAMBRIDGE RINDGE AND ↗
- Who funds CODMAN COMMUNITY FARMS INC ↗
- Who funds ROW NEW YORK INC ↗
- Who funds PARA ROWING FOUNDATION ↗
- Who funds The Food Project Inc ↗
- Who funds CONCRETE FOUNDATION INC ↗
- Who funds Appalachian Mountain Club ↗
- Who funds ROCHESTER COMMUNITY INCLUSIVE ROWING INC ↗
- Who funds ADAPTIVE SPORTS NEW ENGLAND INC ↗
- Who funds EMERSON HOSPITAL ↗
- Who funds WOMENADE BOSTON INC ↗
- Who funds GIRLS INCORPORATED OF BOSTON AND LYNN ↗
- Who funds George Pocock Rowing Foundation ↗
- Who funds CENTRAL NEW YORK COMMUNITY FOUNDATION 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: Boston Foundation Inc · Eastern Bank Foundation · Fidelity Foundation · Ge Aerospace Foundation · American Tower Corporation Foundation Inc · The Vermont Community Foundation · Yawkey Foundation II · National Life Group Charitable Foundation Inc · Rockland Trust Charitable Foundation Inc · Combined Jewish Philanthropies of Greater Boston Inc · Citizens Charitable Foundation · The Chicago 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 Tremont Street Foundation Inc 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.
- Hope Works Inc — 49% of income from government
- Girls Incorporated of Boston and Lynn — 28% of income from government
- The Green Mountain Club Inc Debonis — 17% of income from government
- Ellie Fund Inc — 15% of income from government
- Champlain Housing Trust — 15% of income from government
- HowardCenter Inc — 8% of income from government
- President and Fellows of Harvard College — 7% of income from government
- Emerson Hospital — 3% of income from government
- Shelburne Farms — 3% of income from government
- Community Rowing Inc — 2% of income from government
- Appalachian Mountain Club — 1% of income from government
- Boston Symphony Orchestra Inc — 0% of income from government
- Rosie's Place Inc — 0% of income from government
- Migrant Justice Inc — 0% of income from government
- Concrete Foundation 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 Tremont Street Foundation Inc?
Find your warmest path to Tremont Street Foundation Inc 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.