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· Private foundation

Caithness Foundation

Its FY2026 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$84k
Granted FY2026still arriving
46
Grants FY2026still arriving
11
States reached
$10k
Largest
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2018 to 2025.

International$152kEnvironment$113kScience & Tech$83kHealth$72kHuman Services$54kEducation$39kAnimals$38kArts & Culture$28kOther$0
02FY2026 · 46 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2026

  • Under $10k45 grants · $74k
  • $10k–50k1 grant · $10k
$1,700
Median grant
11
States reached
$1.3M
Total assets
Largest grants
RecipientAmount
OXFAM AMERICA$10,000
DOCTORS WITHOUT BORDERS USA$5,000
ACLU FOUNDATION$4,000
US FUND FOR UNICEF$4,000
WOODWELL CLIMATE RESEARCH CENTER$3,500
THE COALITION FOR CHILDREN$3,500
THE ICSEE$2,000
FALMOUTH FUND OF THE CC FOUNDATION$2,000
LOVE WITHOUT BOUNDARIES$2,000
RED CROSS$2,000
YMCA OF CAPE COD$2,000
DANA FARBER CANCER INSTITUTE$2,000
CHILDREN'S HOSPITAL BOSTON$2,000
THE POPULATION COUNCIL$2,000
ROCKY MOUNTAIN INSTITUTE$2,000
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Its human-services grants (FY18–26, $58k) land where the poverty rate runs at 9%, against an area that typically sits at 10%. 15% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 10%THE COALITION FOR CHILDREN: $4k → 8%THE COALITION FOR CHILDREN: $4k → 8%THE COALITION FOR CHILDREN: $4k → 8%THE COALITION FOR CHILDREN: $4k → 8%RED CROSS: $2k → 14%RED CROSS: $2k → 14%RED CROSS: $2k → 14%RED CROSS: $2k → 14%RED CROSS: $1k → 14%THE COALITION FOR CHILDREN: $10k → 8%THE COALITION FOR CHILDREN: $10k → 8%THE COALITION FOR CHILDREN: $5k → 8%THE COALITION FOR CHILDREN: $5k → 8%THE COALITION FOR CHILDREN: $5k → 8%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

VT
MN
IL
NY
MA
IA
PA
CA
CO
MD
AR
DC
TX
FL
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

95%of every dollar goes to organizations it has funded before.
$684k · 49 repeat orgs$34k to everyone else

49 repeat relationships: 43 still active in FY2026, 6 since wound down; 3 grantees were first funded in FY2026 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

49
8

Total granted

$684k
$31k

Median revenue growth · since first grant

+47%
+73%

Still filing today

69%
25%

New vs renewed · share of each year

In FY2026, 97% of grant dollars renewed an existing relationship; $3k went to new ones.

50%100%’18’19’20’21’22’23’24’25’26
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’21’22’23’24’25’26
AnimalsInternationalHealthEnvironmentEducationHuman ServicesOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • MEDECINS SANS FRONTIERES USA INC
    9× · 2018–2026 · $34k · revenue +89%
  • UNITED STATES FUND FOR UNICEF
    8× · 2019–2026 · $26k · revenue +55%
  • Woodwell Climate Research Center Inc
    7× · 2020–2026 · $21k · revenue +123%

Funded once

  • GC
    Green Center Incgraduated
    one grant, 2018 · $22k · revenue +73%
  • IG
    Individual grant recipient
    one grant, 2018 · $2k
  • IG
    Individual grant recipient
    one grant, 2019 · $2k
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.

04Its field

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.

1
World Wildlife Fund Inc

Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)

Environment
2
Conservation International Foundation

Ci works to spotlight and secure the critical benefits that nature provides to humanity.

Environment
3
Friends of the Earth

Friends of the earth strives for a more healthy and just world by defendng the environment and human health while advancing social and economic justice by conducting research and education, transforming the economy so it protects the…

Environment
4
Conservation Law Foundation Inc

Conservation law foundation, inc. (clf) protects new england's environment for the benefit of all people and future generations. we use the law, science, and markets to create solutions that preserve and restore our natural resources,…

Environment
5
World Resources Institute

Wri is committed to creating change that improves people's lives and ensures the natural world can thrive. (see schedule o)wri's bold vision requires a formula for success we call "count it. change it. scale it.": - count it: our work is…

International
6
Ocean Conservancy

Ocean conservancy unites science, people, and policy to protect our ocean, today and for generations to come.

Environment
7
Climate Institute

The climate institute is organized for the purpose of educating the general public and policy makers as to the gravity of potential climate change, exploring the policy implications of the latest scientific findings on climate modelling…

Environment
8
Sustainable Fisheries Partnership Foundation

To engage and catalyze global seafood supply chains in rebuilding depleted fish stocks and reducing the environmental impacts of fishing and fish farming.

Animals
9
Fairchild Tropical Botanic Garden Inc

We harness the power of plants for humankind and share the joy and beauty of tropical gardening with everyone. fairchild tropical botanic garden is a museum of tropical plants within a world famous, 83-acre designed landscape. it was…

Environment
10
Earth & Space Research

Increase societal understanding of the earth system through scientific research and education.

Science & Tech
11
Rare

Rare inspires change so people and nature thrive.

Environment
12
Massachusetts Institute of Technology

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.

Education
How this is measured
The grantee most central to the portfolio’s shape is Wildaid Inc; the most unlike its peers is Green Center Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

38 grantees tracked through their own filings, 2017–2026.

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 2026, not grant rows in a single year, so this will not match the grant count on the cover. 38 of the 60 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.

0
Load-bearing (≥25% of a budget)
10
Early backer (in before they grew)
38/38
Grantees still filing
26/38
Grew since first funded

Where the money sits, by cause and then by grantee

WHOI: $56,000 · OtherWHOIGreen Center Inc: $22,000 · OtherGreen Center IncFALMOUTH FUND OF THE CC FOUNDATION: $18,000 · OtherFALMOUTH FUND OF THE CC FOUNDATIONTHE ICSEE: $14,000 · OtherAPCC: $13,800 · OtherFALMOUTH SERVICE CENTER INC: $13,300 · OtherUS FOUND FOR QUEENS UNIV: $13,000 · OtherRocky Mountain Institute: $12,500 · OtherMASS GENERAL BRIGHAM INCORPORATED: $12,000 · OtherCAPE COD HEALTH CARE FOUNDATION: $12,000 · OtherWoodwell Climate Research Center Inc: $20,500 · OtherWoodwell Climate Research Center IncNEIGHBORHOOD FALMOUTH INC: $11,000 · Other+22 more: $86,800 · Other+22 moreOXFAM-AMERICA INC: $90,500 · InternationalOXFAM-AMERICA INCMEDECINS SANS FRONTIERES USA INC: $33,600 · InternationalMEDECINS SANS FRONTIERES US…UNITED STATES FUND FOR UNICEF: $25,500 · InternationalUNITED STATES FUND FOR UNIC…THE POPULATION COUNCIL INC: $16,750 · InternationalTHE POPULATION COUNCIL INCTHE UNION OF CONCERNED SCIENTISTS INC: $11,000 · InternationalTHE UNION OF CONCERNED SCIE…COALITION FOR CHILDREN: $49,900 · Human ServicesCOALITION …American National Red Cross & Its Constituent Chapters and Branches: $14,500 · Human ServicesAmerican N…Children's Hospital Corporation: $15,250 · HealthChildren'…Dana-Farber Cancer Institute Inc: $14,500 · HealthDana-Farb…FRIENDS OF FAIRWINDS INC: $9,500 · HealthFRIENDS O…THE SAMARITANS ON CAPE COD: $9,000 · HealthTHE SAMAR…LOVE WITHOUT BOUNDARIES FOUNDATION: $8,900 · HealthLOVE WITH…THE 300 COMMITTEE LAND TRUST INC: $13,200 · EnvironmentENVIRONMENTAL DEFENSE ACTION FUND: $11,500 · EnvironmentNATURAL RESOURCES DEFENSE COUNCIL INC: $10,700 · EnvironmentCAPE AND ISLANDS SELF-RELIANCE CORPORATION INC: $10,500 · EnvironmentWILDAID INC: $13,400 · AnimalsHumane World for Animals International: $11,000 · AnimalsTHE SAMPSON FUND FOR VETERINARY CARE INC: $7,900 · AnimalsPEOPLE FOR CATS A NON-PROFIT CORPORATION: $6,800 · AnimalsFRIENDS OF FALMOUTH DOGS A NON PROFIT CORPORATION: $4,300 · Animals+1 more: $1,000 · AnimalsWIKIMEDIA FOUNDATION INC: $8,000 · EducationWilliam Marsh Rice University: $7,500 · EducationFALMOUTH ACADEMY INC: $7,500 · EducationNational Merit Scholarship Corporation: $1,000 · Education
Other$304,900International$177,350Human Services$64,400Health$57,150Environment$45,900Animals$44,400Education$24,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetOXFAM-AMERICA INC: $90,500 over 9y, 0.0% of budgetCOALITION FOR CHILDREN: $49,900 over 9y, 22% of budgetMEDECINS SANS FRONTIERES USA INC: $33,600 over 9y, 0.0% of budgetUNITED STATES FUND FOR UNICEF: $25,500 over 8y, 0.0% of budgetWoodwell Climate Research Center Inc: $20,500 over 7y, 0.0% of budgetTHE POPULATION COUNCIL INC: $16,750 over 9y, 0.0% of budgetChildren's Hospital Corporation: $15,250 over 9y, 0.0% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches: $14,500 over 8y, 0.0% of budgetDana-Farber Cancer Institute Inc: $14,500 over 8y, 0.0% of budgetWILDAID INC: $13,400 over 7y, 0.1% of budgetFALMOUTH SERVICE CENTER INC: $13,300 over 9y, 0.1% of budgetTHE 300 COMMITTEE LAND TRUST INC: $13,200 over 9y, 0.3% of budgetRocky Mountain Institute: $12,500 over 9y, 0.0% of budgetENVIRONMENTAL DEFENSE ACTION FUND: $11,500 over 8y, 0.0% of budgetHumane World for Animals International: $11,000 over 8y, 0.0% of budgetNEIGHBORHOOD FALMOUTH INC: $11,000 over 9y, 1.1% of budgetTHE UNION OF CONCERNED SCIENTISTS INC: $11,000 over 7y, 0.0% of budgetNATURAL RESOURCES DEFENSE COUNCIL INC: $10,700 over 8y, 0.0% of budgetCAPE AND ISLANDS SELF-RELIANCE CORPORATION INC: $10,500 over 9y, 0.5% of budgetFRIENDS OF FAIRWINDS INC: $9,500 over 9y, 4.1% of budgetTHE SAMARITANS ON CAPE COD: $9,000 over 8y, 0.5% of budgetLOVE WITHOUT BOUNDARIES FOUNDATION: $8,900 over 4y, 0.1% of budgetWIKIMEDIA FOUNDATION INC: $8,000 over 8y, 0.0% of budgetCape Cod Young Men's Christian Association Inc: $8,000 over 3y, 0.0% of budgetTHE SAMPSON FUND FOR VETERINARY CARE INC: $7,900 over 9y, 0.7% of budgetWilliam Marsh Rice University: $7,500 over 8y, 0.0% of budgetFALMOUTH ACADEMY INC: $7,500 over 5y, 0.0% of budgetAMERICAN FRIENDS OF THE BUGATTI TRUST INC: $7,000 over 7y, 2.1% of budgetPEOPLE FOR CATS A NON-PROFIT CORPORATION: $6,800 over 9y, 0.8% of budgetHISTORIC HIGHFIELD INC: $6,000 over 9y, 0.1% of budgetFRIENDS OF FALMOUTH DOGS A NON PROFIT CORPORATION: $4,300 over 9y, 0.5% of budgetFARM AND WILDERNESS FOUNDATION INC: $3,000 over 3y, 0.0% of budgetNORTH FALMOUTH ELEMENTARY PTO: $1,800 over 1y, 2.8% of budgetPAN-MASSACHUSETTS CHALLENGE INC: $1,500 over 3y, 0.0% of budgetNational Merit Scholarship Corporation: $1,000 over 2y, 0.0% of budget
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 OXFAM-AMERICA INC ↗
  • Who funds COALITION FOR CHILDREN ↗
  • Who funds MEDECINS SANS FRONTIERES USA INC ↗
  • Who funds UNITED STATES FUND FOR UNICEF ↗
  • Who funds Green Center Inc ↗
  • Who funds Woodwell Climate Research Center Inc ↗
  • Who funds THE POPULATION COUNCIL INC ↗
  • Who funds Children's Hospital Corporation ↗
  • Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
  • Who funds Dana-Farber Cancer Institute Inc ↗
  • Who funds WILDAID INC ↗
  • Who funds FALMOUTH SERVICE CENTER INC ↗
  • Who funds THE 300 COMMITTEE LAND TRUST INC ↗
  • Who funds Rocky Mountain Institute ↗
  • Who funds ENVIRONMENTAL DEFENSE ACTION FUND ↗
  • Who funds Humane World for Animals International ↗
  • Who funds NEIGHBORHOOD FALMOUTH INC ↗
  • Who funds THE UNION OF CONCERNED SCIENTISTS INC ↗
  • Who funds NATURAL RESOURCES DEFENSE COUNCIL INC ↗
  • Who funds CAPE AND ISLANDS SELF-RELIANCE CORPORATION INC ↗
  • Who funds FRIENDS OF FAIRWINDS INC ↗
  • Who funds THE SAMARITANS ON CAPE COD ↗
  • Who funds LOVE WITHOUT BOUNDARIES FOUNDATION ↗
  • Who funds WIKIMEDIA FOUNDATION INC ↗
  • Who funds Cape Cod Young Men's Christian Association Inc ↗
  • Who funds THE SAMPSON FUND FOR VETERINARY CARE INC ↗
  • Who funds William Marsh Rice University ↗
  • Who funds FALMOUTH ACADEMY INC ↗
  • Who funds AMERICAN FRIENDS OF THE BUGATTI TRUST INC ↗

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.

Cape Cod Foundation IncMA23.9× affinity9 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Cape Cod Foundation Inc · Stanley W Watson Foundation · Martha's Vineyard Bank Charitable Foundation Inc · Cape Cod Five Cents Savings Bank Charitable Foundation Trust · Mutual Bancorp Foundation Inc Fka Cape Cod 5 Foundation Inc · Harken Foundation · Lovell Charitable Foundation · Malcolm and Elizabeth Fraser Foundation Inc · The Future Hope Foundation · Esther Simon 1952 Charitable Trust Xxxxx8006 · Lyndon Paul Lorusso Charitable Foundatio · The Baltimore Family Fund

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization Caithness Foundation funds: left to right is the share of its income from government, bottom to top the share from Caithness Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 130%2%6%14%25%funder's share of their income ↑0%23%45%68%90%share of the org’s income from government →median 7%
  • The Samaritans On Cape Cod: 82% of income from government
  • Woodwell Climate Research Center Inc: 11% of income from government
  • Children's Hospital Corporation: 10% of income from government
  • Dana-Farber Cancer Institute Inc: 7% of income from government
  • Historic Highfield Inc: 1% of income from government
  • Farm and Wilderness Foundation Inc: 0% of income from government
  • Pan-Massachusetts Challenge Inc: 0% of income from government
  • Oxfam-America Inc: 0% of income from government
no gov moneyreceives it· size = income
13get no government money at all
2report government grants on their 990 we could not trace to a source (not plotted)
1rely on government for over half their income
⤢ axis zoomed · 0–90%
typical government reliance, FY20–25
How this is measured
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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 60 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2026, released 2026. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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