· Private foundation
Joseph M Hamilburg 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, FY2020 to 2025.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k78 grants · $63k
- $10k–50k1 grant · $10k
| Recipient | Amount |
|---|---|
| NEW ENGLAND BAPTIST HOSPITAL | $10,000 |
| BOSTON BALLET | $7,600 |
| BRIGHAM & WOMENS HOSPITAL | $5,000 |
| BIDMC (BETH ISRAEL DEACONESS MEDICAL CENTER) | $5,000 |
| DANA-FARBER CANCER INSTITUTE | $5,000 |
| MASS GENERAL HOSPITAL | $5,000 |
| WILDLANDS TRUST | $5,000 |
| NEWTON-WELLESLEY HOSPITAL | $5,000 |
| TUFTS MEDICAL CENTER | $4,000 |
| NEW ENGLAND SKATING CLUB | $3,000 |
| MUSEUM OF FINE ARTS BOSTON | $3,000 |
| NOBLE & GREENOUGH SCHOOL | $2,000 |
| NATIONAL WILD TURKEY FEDERATION | $2,000 |
| NEW ENGLAND BAPTIST HOSPITAL | $1,500 |
| NOBLE & GREENOUGH SCHOOL | $1,000 |
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 (FY21–25, $200) land where the poverty rate runs at 8%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-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 +45% since the first grant, against +24% for those funded once.
91 repeat relationships: 62 still active in FY2025, 29 since wound down; 9 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; $5k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
BOSTON BALLET INC6× · 2020–2025 · $45k · revenue +19%
Dana-Farber Cancer Institute Inc6× · 2020–2025 · $26k · revenue +95%- WTWILDLANDS TRUST INC5× · 2020–2025 · $19k · revenue +45%
Funded once
- M4MASS 4-H FOUNDATIONone grant, 2021 · $5k
- TVTUFTS VETERINARY SCHOOLone grant, 2024 · $3k
- DYDORCHESTER YOUTH HOCKEY INCgraduatedone grant, 2021 · $1k · revenue +29%
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.
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
The organization's mission is to conserve and promote new england's native plants to ensure healthy, biologically diverse landscapes.
Ci works to spotlight and secure the critical benefits that nature provides to humanity.
Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
To sustain, restore, and enhance the nation's fish, wildlife, plants, and habitats.
The wildlife society's mission is to inspire, empower, and enable wildlife professionals to sustain wildlife populations and habitats through science-based management and conservation.
To preserve the unique character and natural resources of harvard.
Advance science, engineering, and innovation throughout the world for the benefit of all. the world's largest multidisciplinary scientific society and a leading publisher of cutting-edge research through its science family of journals,…
The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."
The Marine Biological Laboratory (MBL) is a world-renowned center for biological discovery and training that is notably affiliated with more than 60 Nobel Prize winners. Research is conducted by full-time faculty as well as hundreds of the…
Eastern national promotes the public's understanding and support of america's national parks and other public trust partners by providing quality educational experiences, products and services.
How this is measured
77 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. 77 of the 136 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 BOSTON BALLET INC ↗
- Who funds NEW ENGLAND BAPTIST HOSPITAL ↗
- Who funds Dana-Farber Cancer Institute Inc ↗
- Who funds WILDLANDS TRUST INC ↗
- Who funds Trustees of Tufts College ↗
- Who funds NOBLE AND GREENOUGH SCHOOL ↗
- Who funds NEW ENGLAND SKATING CLUB INC ↗
- Who funds THE NATURE CONSERVANCY ↗
- Who funds AMERICAN BOXER CHARITABLE FOUNDATION ↗
- Who funds WHEATON COLLEGE ↗
- Who funds WEST SIDE BENEVOLENT CIRCLE INC ↗
- Who funds JUDICIAL WATCH INC ↗
- Who funds Walpole Little League Inc ↗
- Who funds DORCHESTER YOUTH HOCKEY INC ↗
- Who funds RUFFED GROUSE SOCIETY ↗
- Who funds Atlantic Salmon Federation (US) Inc ↗
- Who funds TROUT UNLIMITED INC ↗
- Who funds SMITHSONIAN INSTITUTION ↗
- Who funds GREATER BOSTON FOOD BANK INC ↗
- Who funds The United States Holocaust Memorial Museum ↗
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: Combined Jewish Philanthropies of Greater Boston Inc · Analog Devices Foundation · Eastern Bank Foundation · The Pfizer Foundation Inc · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · American Endowment Foundation · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · Network for Good · Donor Advised Charitable Giving Inc · American Online Giving Foundation Inc
How this is measured
How much its grantees rely on government
Each dot is one organization Joseph M Hamilburg Foundation funds: left to right is the share of its income from government, bottom to top the share from Joseph M Hamilburg Foundation. Bigger dots raise more.
- Vietnam Veterans Workshop Inc Dba New England Center and Home for Veterans: 66% of income from government
- Woods Hole Oceanographic Institution: 63% of income from government
- Greater Boston Food Bank Inc: 22% of income from government
- National Marine Life Center Inc: 16% of income from government
- Hospice of the Good Shepherd Inc: 13% of income from government
- Trustees of Tufts College: 13% of income from government
- Trustees of Boston University: 12% of income from government
- New England Aquarium Corporation: 12% of income from government
- Dana-Farber Cancer Institute Inc: 7% of income from government
- Wildlands Trust Inc: 5% of income from government
- Atlantic White Shark Conservancy Inc: 5% of income from government
- Special Olympics Massachusetts Inc: 1% of income from government
- New England Baptist Hospital: 1% of income from government
- Boston Ballet Inc: 0% of income from government
- Wheaton College: 0% of income from government
- Pan-Massachusetts Challenge Inc: 0% of income from government
How this is measured
Play a game based on Joseph M Hamilburg’s filings →