· Private foundation
Tamarack 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 2025.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k53 grants · $79k
- $10k–50k4 grants · $65k
| Recipient | Amount |
|---|---|
| ST JOHN THE BAPTIST PARISH | $20,000 |
| CHABAD LUBAVITCH | $18,000 |
| BOSTON SYMPHONY ORCHESTRA | $17,000 |
| FNE INTERNATIONAL | $10,000 |
| GIRL'S INC LYNN | $6,500 |
| SWAMPSCOTT TIDES | $5,000 |
| WGBH CHANNEL 2 | $5,000 |
| MCLEAN HOSPITAL | $4,000 |
| WALDORF SCHOOL AT MORAINE FARM | $3,000 |
| UNITARIAN UNIVERSALIST CHURCH OF GREATER LYNN | $2,500 |
| Individual grant recipient | $2,000 |
| BOSTON CHONG DE CULTURAL ED TEMPLE | $2,000 |
| THE MID ATLANTIC PATHWORK | $2,000 |
| SIMMONS COLLEGE | $2,000 |
| CIRCLE OF CONCERN | $2,000 |
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, $97k) land where the poverty rate runs at 13%, against an area that typically sits at 10%. 70% 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 +13% since the first grant, against +13% for those funded once.
70 repeat relationships: 43 still active in FY2025, 27 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, 89% of grant dollars renewed an existing relationship; $17k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- FIFNE INTERNATIONAL INC6× · 2020–2025 · $60k · revenue +0%
GIRLS INCORPORATED OF BOSTON AND LYNN4× · 2022–2025 · $27k · revenue +41%- BSBOSTON SYMPHONY ORCHESTRA INC9× · 2017–2025 · $22k · revenue +38%
Funded once
- IGIndividual grant recipientone grant, 2024 · $8k
- AAALS ASSOCIATIONone grant, 2018 · $5k
- TSTHE SERENGETI FOUNDATIONone grant, 2018 · $5k · revenue -90%
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 bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
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.
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
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…
The organization's mission is to conserve and promote new england's native plants to ensure healthy, biologically diverse landscapes.
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 primary mission of furman as a liberal arts institution is to provide a distinctive education in fine arts, humanities, social sciences, mathematics and the sciences, as well as selected professional disciplines.
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…
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…
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.
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…
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…
How this is measured
56 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. 56 of the 108 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 FNE INTERNATIONAL INC ↗
- Who funds UNCORNERED INC ↗
- Who funds GIRLS INCORPORATED OF BOSTON AND LYNN ↗
- Who funds BOSTON SYMPHONY ORCHESTRA INC ↗
- Who funds OPERATION FOOD SEARCH INC ↗
- Who funds CIRCLE OF CONCERN ↗
- Who funds FAMILY & CHILDREN'S SERVICE OF GREATER LYNN INC ↗
- Who funds HUMANE SOCIETY OF MISSOURI ↗
- Who funds THE LOWELL WHITEMAN SCHOOL ↗
- Who funds WALDORF SCHOOL AT MORAINE FARM INC ↗
- Who funds MISSOURI BOTANICAL GARDEN BOARD OF TRUSTEES ↗
- Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
- Who funds MID-ATLANTIC PATHWORK INC ↗
- Who funds SIMMONS UNIVERSITY ↗
- Who funds THE PINGREE SCHOOL INC ↗
- Who funds PLUMMER YOUTH PROMISE INC ↗
- Who funds THE SERENGETI FOUNDATION ↗
- Who funds Lift Up of Routt County ↗
- Who funds Swampscott Tides Inc ↗
- Who funds Bowdoin College ↗
- Who funds UNITED WAY OF THE YAMPA VALLEY ↗
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: Eastern Bank Foundation · Boston Foundation Inc · Essex County Community Foundation Inc · Craig-Scheckman Family Foundation · Institution for Savings in Newburyport & Its Vicinity Charitable Foundation Inc · Cummings Foundation Grants Inc (Fka Oneworld Boston Inc) · Fidelity Foundation · Colorado Gives Foundation · Hurdle Hill Foundation · Salem Five Charitable Foundation Inc · Alfred Chase Charity Fdn Ui · The Coughlin Family Trust
How this is measured
How much its grantees rely on government
Each dot is one organization Tamarack Foundation funds: left to right is the share of its income from government, bottom to top the share from Tamarack Foundation. Bigger dots raise more.
- Plummer Youth Promise Inc: 64% of income from government
- Woods Hole Oceanographic Institution: 63% of income from government
- Girls Incorporated of Boston and Lynn: 28% of income from government
- Uncornered Inc: 24% of income from government
- United Way of Massachusetts Bay Inc: 23% of income from government
- Care Dimensions Inc: 14% of income from government
- Trustees of Boston University: 12% of income from government
- The Salem Mission Inc: 4% of income from government
- Peabody Essex Museum Inc: 3% of income from government
- The Trustees of Reservations: 2% of income from government
- New England Conservatory of Music: 1% of income from government
- Simmons University: 1% of income from government
- Boston Symphony Orchestra Inc: 0% of income from government
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to Tamarack Foundation?
Find your warmest path to Tamarack 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.
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