· Private foundation
The Jack and Dorothy Byrne Foundation Inc
Its FY2025 filing reports that it accepted unsolicited grant applications.
What you funded, over time
By grantee IRS cause code (NTEE).
A cause breakdown isn’t shown here: 84% of THE JACK AND DOROTHY BYRNE FOUNDATION INC’s grantee dollars fall outside its nine largest cause areas, whether because the recipient carries no IRS cause code or because its cause sits in the long tail. A chart would be mostly one residual band and misrepresent the portfolio.
Where the money goes
Your grants by size, and where they go.
The 172 grants below total $3,167,600 — the rows itemised in this filing. The $12,046,100 headline is the total grant expense reported on the return, so the remaining $8,878,500 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.
By grant size · FY2024
- Under $10k79 grants · $290k
- $10k–50k75 grants · $1.4M
- $50k–250k17 grants · $1.2M
- $250k+1 grant · $300k
Anchored by a single position — about 97% of reported assets are held in Berkshire Hathaway A.
| Recipient | Amount |
|---|---|
| Dartmouth Health Children's (CHaD) | $300,000 |
| American Society for Reproductive Immunology - Geisel School of Medicine | $100,000 |
| Dartmouth Health Palliative (Formerly named Dartmouth-Hitchcock Palliative) | $100,000 |
| Colby-Sawyer College | $100,000 |
| Catholic Medical Center | $100,000 |
| American Heart Association - Manchester, New Hampshire | $75,000 |
| American Cancer Society - New Hampshire/Northeast Region | $75,000 |
| Carter Community Building Associati | $75,000 |
| Grafton County Senior Citizens Cour | $75,000 |
| Headrest | $75,000 |
| Family Place | $75,000 |
| Aloha Foundation | $65,000 |
| Gifford Health Care | $50,000 |
| Gifford Health Care | $50,000 |
| David's House | $50,000 |
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 +10% since the first grant, against +6% for the ones you funded once.
113 repeat relationships — 90 still active in FY2024, 23 since wound down; 49 grantees were first funded in FY2024 (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 FY2024, 65% of grant dollars renewed an existing relationship; $1.1M 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
- APAlice Peck Day Memorial Hospital2× · 2022–2023 · $300k · revenue +13%
- TFTHE FAMILY PLACE INC2× · 2022–2024 · $150k · revenue +8%
- DHDAVID'S HOUSE INC3× · 2022–2024 · $125k · revenue +126%
Funded once
- SSSEE STATMENT 10one grant, 2020 · $15M
- GCGrafton County Senior Citizens Council Incone grant, 2022 · $165k · revenue +1%
- FOFriend of Oak Hillone grant, 2022 · $100k
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.
As one of New Englands leading visual and performing arts institutions, SVAC's mission is to promote and nurture the arts.
Cvph medical center's mission is to provide quality health care for the north country region in upstate new york.
A premier center for the arts in the white mountain area of new hampshire
Vermont public informs, educates, and entertains through public service journalism and enlightening content rooted in vermont. our storytelling enriches lives and fosters community connection and understanding.
Mountain Village is a public Nature-based, Montessori school, engaging students in experiences that integrate natural environments with the Montessori curriculum, igniting achievement in academic, social-emotional and physical development.
Fostering, encouraging and assisting the physical location of business enterprises within the States of Vermont and New Hampshire, and having its principal purpose be industrial and economic development of one or more political…
The Addison County Chamber of Commerce mission is to enhance the economic vitality of Addison County.
Cvmc works collaboratively to meet the needs and improve the health of the residents of central vermont.
Catamount Institute is dedicated to connecting kids to the outdoors through environmental education and outdoor adventures.
The Castleton Free Library serves as a welcoming center for our community and a gateway to the world of information and imagination. We provide free access to materials and ideas through robust collection development, cultural and creative…
Promote business opportunities
Center provides a supportive gathering place for community members over the age of 50 with free & donation based programs. These programs promote social, physical & emotional wellbeing
For reference, the grantee most central to the portfolio’s shape is Boys & Girls Clubs of Central and Northern Nh Inc and the most unlike its peers is Haverhill Library Association. 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 32 years old; the field is 19. You back the established end — and your money leans older still.
The field is 18% startups (under 5 years old) — 4% of your grantees by number, and just 2% of your money.
The orgs you fund almost never close — 2% lost their exemption, against 8% 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.
95 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. 95 of the 241 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
Showing your 200 largest grantees by grant value.
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 Colby-Sawyer College ↗
- Who funds Alice Peck Day Memorial Hospital ↗
- Who funds Catholic Medical Center ↗
- Who funds THE ALOHA FOUNDATION INC ↗
- Who funds Community Gallery Inc ↗
- Who funds Grafton County Senior Citizens Council Inc ↗
- Who funds THE FAMILY PLACE INC ↗
- Who funds CHILDREN'S LITERACY FOUNDATION ↗
- Who funds Headrest Inc ↗
- Who funds DAVID'S HOUSE INC ↗
- Who funds Gifford Health Care Inc ↗
- Who funds FRIENDS OF HANOVER CREW ↗
- Who funds FRIENDS OF OAKHILL ↗
- Who funds HANOVER ROTARY CHARITIES INC ↗
- Who funds CLAREMONT OPERA HOUSE INC ↗
- Who funds CITY CENTER BALLET INC ↗
- Who funds CHANDLER CENTER FOR THE ARTS INC ↗
- Who funds Good Neighbor Health Clinic Inc ↗
- Who funds Bradford Teen Center Inc ↗
- Who funds COMMUNITYCARE OF LYME ↗
- Who funds Dayspring Pregnancy Care Center ↗
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: New Hampshire Charitable Foundation · The Vermont Community Foundation · The Couch Family Foundation · Mascoma Bank Foundation · Cogswell Benevolent Trust · Ben & Jerry's Foundation Inc · National Life Group Charitable Foundation Inc · Agnes M Lindsay Trust · Vermont Council on the Arts Inc · Emily Landecker Foundation Inc · Granite United Way · Claremont Savings Bank Foundation
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.
Warm introductions · Powered by PlinthPlus
How do I get to The Jack and Dorothy Byrne Foundation Inc?
Find your warmest path to The Jack and Dorothy Byrne 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.