· Private foundation
Holbrook R & Sarah M Davis Foundation Inc
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 FY2020–2025.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| DUBLIN SCHOOL | $5,000 |
| FOOD BANK OF THE SOUTHERN TIER | $3,000 |
| CURE ALZHEIMERS FUND | $2,000 |
| TIOGA COUNTY RURAL MINISTRY | $2,000 |
| CAPE ABILITIES INC | $2,000 |
| BARNSTABLE CLEAN WATER COALITION | $2,000 |
| CAPE COD HEALTHCARE FOUNDATION | $1,500 |
| CAPE COD TIMES NEIGHBORS FUND INC | $1,500 |
| WSKG | $1,500 |
| NORTH COUNTY PUBLIC RADIO | $1,250 |
| REGIONAL FOOD BANK OF NORTHEASTERN NEW YORK | $1,250 |
| FINGER LAKES LAND TRUST | $1,000 |
| UNIVERSITY OF VIRGINIA BREAST CARE PROGRAM | $1,000 |
| CHAMP HOMES | $1,000 |
| PLIMOUTH PATUXET MUSEUMS | $1,000 |
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 (FY20–25, $17k) land where the poverty rate runs at 8%, against an area that typically sits at 8%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-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.
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 +21% since the first grant, against +3% for the ones you funded once.
73 repeat relationships — 56 still active in FY2025, 17 since wound down; 7 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, 91% of grant dollars renewed an existing relationship; $5k 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
- DSDUBLIN SCHOOL INC5× · 2021–2025 · $18k · revenue +21%
- TBTHREE BAYS PRESERVATION INC4× · 2022–2025 · $10k · revenue +11%
- CACAPE ABILITIES INC6× · 2020–2025 · $8k · revenue +22%
Funded once
- MMMARSTONS MILLS HISTORICAL SOCIETY INCone grant, 2020 · $5k
- CCCAPE COD ACADEMYone grant, 2020 · $5k · revenue +23%
- BCBarnstable Clean Water Coalitionone grant, 2020 · $3k
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.
The nantucket conservation foundation owns, protects, and stewards over 9,000 acres of land and coastal shoreline, conserves nantucket's rare and significant natural resources, and engages in impactful ecological research to inform…
The mission of the atlantic coast conservancy is to provide 21st century solutions and sound scientific applications for conservation of critical natural resources in the face of a changing climate, focusing on the southeasthern united…
Overview - founded in boston by pioneering landscape architect and open space visionary charles eliot in 1891, the trustees is the nation's first and the commonwealth's largest conservation and preservation nonprofit.
To inspire appreciation, understanding and stewardship of our natural environment through discovery and learning.
To preserve and steward aquidneck island's open spaces for the lasting benefit of the community while connecting people with the land that defines the island's natural character.
The adirondack council ensures the ecological integrity (clean water and air, wildlife habitat, etc.), wild character (solitude, scenic beauty, etc.), and vibrant communities of new york's six-million-acre adirondack park. the adirondack…
To preserve the unique character and natural resources of harvard.
The aquarium of the pacific's mission is to instill a sense of wonder, respect, and stewardship for the pacific ocean, its inhabitants, and ecosystems.
The mission of Islesboro Islands Trust is to enhance the quality of residents' lives through the preservation of open space, educate all residents as to the value of the island's natural ecosystems, and act as an environmental advocate on…
The wildlands trust works throughout southeastern massachusetts to conserve and permanently protect native habitats, farmland, and lands of high ecologic and scenic value that serve to keep our communities healthy and our residents…
Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.
The mission of wildcoast is to conserve coastal and marine ecosystems and address climate change through natural solutions. our staff is dedicated to conserving threatened and endangered coastlines and wildlife in california and mexico.…
For reference, the grantee most central to the portfolio’s shape is Island Conservation and the most unlike its peers is The Khaled Hosseini Foundation. 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 40 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.
79 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. 79 of the 137 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 DUBLIN SCHOOL INC ↗
- Who funds THREE BAYS PRESERVATION INC ↗
- Who funds CAPE ABILITIES INC ↗
- Who funds PLIMOTH PATUXET MUSEUMS INC ↗
- Who funds PATHFINDER INTERNATIONAL ↗
- Who funds CAPE COD TIMES NEIGHBORS FUND INC ↗
- Who funds ALZHEIMER'S DISEASE RESEARCH FOUNDATION ↗
- Who funds Tioga County Rural Ministry Inc ↗
- Who funds The Finger Lakes Land Trust Inc ↗
- Who funds OSTERVILLE FREE LIBRARY CORPORATION ↗
- Who funds CAPE COD ACADEMY ↗
- Who funds REGIONAL FOOD BANK OF NORTHEASTERN NEW YORK INC ↗
- Who funds PLANNED PARENTHOOD OF GREATER NEW YORK INC ↗
- Who funds COTUIT LIBRARY ASSOCIATION ↗
- Who funds BARNSTABLE LAND TRUST INC ↗
- Who funds NATURAL HISTORY MUSEUM OF THE ADIRONDACKS ↗
- Who funds INDEPENDENCE HOUSE INC ↗
- Who funds ADIRONDACK FOLK SCHOOL INC ↗
- Who funds ALLIANCE FOR TOMPOTIKA CONSERVATION ↗
- Who funds GEORGIA'S FRIENDS INC ↗
- Who funds SEA EDUCATION ASSOCIATION INC ↗
- Who funds WOODEN CANOE HERITAGE ASSOCIATION LTD ↗
- Who funds COLLIE RESCUE LEAGUE OF NEW ENGLAND INC ↗
- Who funds IVY CREEK FOUNDATION INC ↗
- Who funds HUDSON HEADWATERS HEALTH NETWORK ↗
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: Cape Cod Foundation Inc · Mutual Bancorp Foundation Inc Fka Cape Cod 5 Foundation Inc · Rockland Trust Charitable Foundation Inc · Charlottesville Area Community Foundation · Bilezikian Family Foundation Inc · Cape Cod Five Cents Savings Bank Charitable Foundation Trust · Donald C McGraw Foundation Inc · Arthur V Davis Foundation Pf #3 · Eastern Bank Foundation · Perry Foundation Inc · The Genan Foundation · The Vela 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.
Government reliance of your grantees
Every dot is one organization Holbrook R & Sarah M Davis Foundation Inc 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.
- Independence House Inc — 85% of income from government
- Cape Abilities Inc — 81% of income from government
- Woods Hole Oceanographic Institution — 63% of income from government
- Center for Coastal Studies Inc — 26% of income from government
- Three Bays Preservation Inc — 18% of income from government
- The Coral Restoration Foundation Inc — 16% of income from government
- Sea Education Association Inc — 12% of income from government
- Housing Assistance Corporation — 10% of income from government
- Barnstable Land Trust Inc — 4% of income from government
- Mote Marine Laboratory Inc — 4% of income from government
- Chesapeake Bay Foundation Inc — 2% of income from government
- Cape Cod Foundation Inc — 2% of income from government
- Plimoth Patuxet Museums Inc — 1% of income from government
- Cotuit Library Association — 1% of income from government
- Osterville Historical Society Inc — 1% of income from government
- Cape Cod Academy — 0% of income from government
- The Sturgis Library — 0% of income from government
- Pan-Massachusetts Challenge Inc — 0% of income from government
- Milton Academy — 0% of income from government
- Boston Foundation Inc — 0% 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.
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Find your warmest path to Holbrook R & Sarah M Davis 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.