· Private foundation
Third Street 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 it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k25 grants · $66k
- $10k–50k5 grants · $59k
| Recipient | Amount |
|---|---|
| ST PAUL'S SCHOOL | $16,000 |
| BOSTON AREA GLEANERS | $11,500 |
| HARVARD COLLEGE | $11,000 |
| Waterfront Alliance | $10,000 |
| CORNING MUSEUM OF GLASS | $10,000 |
| OPEN TABLE | $6,500 |
| Christ Episcopal Church | $5,000 |
| Groton Hill Music Center | $5,000 |
| EQUAL JUSTICE INITIATIVE | $4,000 |
| WORLD CENTRAL KITCHEN | $4,000 |
| PLANNED PARENTHOOD FEDERATION OF AMERICA | $4,000 |
| DOCTORS WITHOUT BORDERS | $4,000 |
| ROSIE'S PLACE | $3,000 |
| PINE STREET INN | $3,000 |
| PARTNERS IN HEALTH | $3,000 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its human-services grants (FY17–25, $20k) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 60% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.
How this is measured
Which US states its grants reach
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +58% since the first grant, against +16% for those funded once.
30 repeat relationships: 19 still active in FY2025, 11 since wound down; 11 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, 78% of grant dollars renewed an existing relationship; $27k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- TCTHE CORNING MUSEUM OF GLASS7× · 2019–2025 · $147k · revenue +8%
- PSPURNELL SCHOOL4× · 2017–2021 · $63k · revenue +58%
- MSMARLBOROUGH SCHOOL4× · 2017–2021 · $20k · revenue +32%
Funded once
- TETOMORROW'S EDUCATION NETWORK INCone grant, 2022 · $30k · revenue -64%
- TTTHE TRIANGLE FUNDgraduatedone grant, 2023 · $14k · revenue +333%
- SHST HILDAS AND ST HUGHS SCHOOLone grant, 2024 · $5k
How this is measured
Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.
Closest unfunded matches
The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. 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.
Education and Research
Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
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…
Wpi transforms lives, turns knowledge into action to confront global challenges, and revolutionizes stem through distinctive and inclusive education, projects and research. (http://www.wpi.edu/about/mission.html)
To educate students to be ethical and socially responsible leaders in a global community.
Fordham university, the jesuit university of new york, is committed to the discovery of wisdom and the transmission of learning, through research and through education of the highest quality. for more information, see schedule o.
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 george washington university (gw) is to educate individuals in liberal arts, languages, sciences, learned professions, and other courses and subjects of study, and to conduct scholarly research and publish the findings…
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
Williams College strives to achieve educational excellence by fostering a community of learning in collaboration with students, faculty, staff, devoted alumni and parents.
How this is measured
37 grantees tracked through their own filings, 2017–2025.
Each grant beside the grantee’s revenue from every source, year by year.
How this is measured
Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 37 of the 54 grantees resolved in that span have returns of their own we could reconcile.
Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
Grantee by grantee: a decade per organization, before and after funding
A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.
- Who funds THE CORNING MUSEUM OF GLASS ↗
- Who funds PURNELL SCHOOL ↗
- Who funds CORNING COMMUNITY COLLEGE DEVELOPMENT FOUNDATION INC ↗
- Who funds TOMORROW'S EDUCATION NETWORK INC ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds MARLBOROUGH SCHOOL ↗
- Who funds EQUAL JUSTICE INITIATIVE ↗
- Who funds PLANNED PARENTHOOD FEDERATION OF AMERICA INC ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds PARTNERS IN HEALTH A NONPROFIT CORPORATION ↗
- Who funds THE TRIANGLE FUND ↗
- Who funds BOSTON AREA GLEANERS INC ↗
- Who funds PINE STREET INN INC ↗
- Who funds ROSIE'S PLACE INC ↗
- Who funds Save The Children Federation Inc ↗
- Who funds WORLD CENTRAL KITCHEN INC ↗
- Who funds ETHICAL CULTURE FIELDSTON SCHOOL ↗
- Who funds OPEN TABLE INC ↗
- Who funds WASHINGTON UNIVERSITY ↗
- Who funds HOUSEHOLD GOODS INC ↗
- Who funds HUMAN RIGHTS CAMPAIGN FOUNDATION ↗
- Who funds The Farm School Inc ↗
- Who funds UNITED STATES FUND FOR UNICEF ↗
- Who funds Trustees of Dartmouth College ↗
- Who funds NATIONAL DANCE INSTITUTE ↗
- Who funds CHEMUNG COUNTY CHILD CARE COUNCIL INC ↗
Co-funders
Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.
Open a dossier: The Triangle Fund · Ge Aerospace Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Vanguard Charitable Endowment Program · National Philanthropic Trust · American Endowment Foundation · Charities Aid Foundation America · Morgan Stanley Global Impact Funding Trust Inc · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
How this is measured
How much its grantees rely on government
Each dot is one organization Third Street Foundation funds: left to right is the share of its income from government, bottom to top the share from Third Street Foundation. Bigger dots raise more.
- Save the Children Federation Inc: 30% of income from government
- Boston Area Gleaners Inc: 20% of income from government
- The Farm School Inc: 12% of income from government
- Pine Street Inn Inc: 11% of income from government
- President and Fellows of Harvard College: 7% of income from government
- Open Table Inc: 7% of income from government
- Rosie's Place Inc: 0% of income from government
- Partners in Health a Nonprofit Corporation: 0% of income from government
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to Third Street Foundation?
Find your warmest path to Third Street 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.
Play a game based on Third Street’s filings →