· Private foundation
Brk Family 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 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 $10k12 grants · $41k
- $10k–50k7 grants · $158k
| Recipient | Amount |
|---|---|
| Individual grant recipient | $40,000 |
| ROBIN HOOD FOUNDATION | $35,000 |
| US-JAPAN BRIDGING FOUNDATION | $25,000 |
| HUDSON INSTITUTE INC | $15,000 |
| GEORGETOWN UNIVERSITY | $15,000 |
| THE COLLEGE DIABETES NETWORK (DIABETES LINK) | $15,000 |
| Individual grant recipient | $12,500 |
| NANTUCKET COTTAGE HOSPITAL | $7,000 |
| AMERICAN RED CROSS | $5,000 |
| HARVARD BUSINESS SCHOOL | $5,000 |
| NANTUCKET CONSERVATION FOUNDATION | $5,000 |
| COX SCIENCE CENTER AND AQUARIUM | $5,000 |
| NANTUCKET LAND COUNCIL | $5,000 |
| HOOVER INSTITUTION | $5,000 |
| PALM BEACH DIOCESAN SERVICES APPEAL | $1,500 |
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 (FY17–17, $1k) land where the poverty rate runs at 9%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-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.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 6% of Brk Family Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
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 +64% since the first grant, against +8% for the ones you funded once.
24 repeat relationships — 14 still active in FY2025, 10 since wound down; 4 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, 96% of grant dollars renewed an existing relationship; $8k 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
- RHROBIN HOOD FOUNDATION9× · 2017–2025 · $205k · revenue +49%
- BTBREAKTHROUGH T1D3× · 2017–2023 · $118k · revenue +49%
GEORGETOWN UNIVERSITY9× · 2017–2025 · $107k · revenue +47%
Funded once
- IGIndividual grant recipientone grant, 2024 · $25k
- IGIndividual grant recipientone grant, 2019 · $4k
- GHGREAT HARBOR YACHT CLUB FOUNDATION INCone grant, 2023 · $3k · revenue +2%
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.
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 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 bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…
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…
Undergraduate, graduate, and professional education and research across a broad array of academic domains.
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 Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.
Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.
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 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…
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
For reference, the grantee most central to the portfolio’s shape is Blacksmith Institute Inc and the most unlike its peers is Breakthrough T1D. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 46 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) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% 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.
22 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. 22 of the 42 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 ROBIN HOOD FOUNDATION ↗
- Who funds BREAKTHROUGH T1D ↗
- Who funds GEORGETOWN UNIVERSITY ↗
- Who funds Hudson Institute Inc ↗
- Who funds MOREHOUSE COLLEGE ↗
- Who funds CENTRAL PARK CONSERVANCY INC ↗
- Who funds NANTUCKET LAND & WATER COUNCIL INC ↗
- Who funds NANTUCKET CONSERVATION FOUNDATION INC ↗
- Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
- Who funds COLLEGE DIABETES NETWORK INC ↗
- Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
- Who funds Cox Science Center and Aquarium Inc ↗
- Who funds GREAT HARBOR YACHT CLUB FOUNDATION INC ↗
- Who funds THE CHAPIN SCHOOL LTD ↗
- Who funds NANTUCKET SHELLFISH ASSOCIATION INC ↗
- Who funds Peggy Adams Animal Rescue League of the Palm Beaches Inc ↗
- Who funds CAROLINA MEADOWS INC ↗
- Who funds THE ISAMU NOGUCHI FOUNDATION AND GARDEN MUSEUM ↗
- Who funds BLACKSMITH INSTITUTE INC ↗
- Who funds THOROUGHBRED RETIREMENT 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: Ernst & Elfriede Frank Foundation Inc · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund
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 Brk Family Foundation 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.
- Cox Science Center and Aquarium Inc — 6% of income from government
- Nantucket Conservation Foundation Inc — 4% 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 Brk Family Foundation?
Find your warmest path to Brk Family 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.