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Connecticut · Private foundation

The Stewart & Constance Greenfield 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.

$1.1M
Granted FY2024(still arriving)
1
Grants FY2024
63
Organizations funded FY2022
8%
First-time grantees FY2022
Read the full brief
Median grant, FY2024
$1,100,000
Largest grant, FY2024
$1,100,000
Organizations funded a year
59 to 81
FY2017 to FY2022
States reached, FY2024
1
Total assets, FY2024
$193k
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2022, 8% of the organizations The Stewart & Constance Greenfield Foundation funded were first-time grantees, receiving 20% of its grant dollars.

New vs renewed · share of each year

In FY2022, 80% of grant dollars renewed an existing relationship; $34k went to new ones.

50%100%’18’19’20’21’22
RenewedFirst-time

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

’18’19’20’21’22
Arts & CultureInternationalEnvironmentHuman ServicesEducationPublic Safety & DisasterOther
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.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2024still arriving1$1.1M100%
FY202263$170k8%
FY202162$160k13%
FY202059$164k19%
FY201981$173k17%
FY201878$205k26%
FY201778$270kn/a
96% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Environment$1.5MEducation$1.5MHealth$123kScience & Tech$78kArts & Culture$55kFood & Nutrition$54kAnimals$44kInternational$44kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

VT
MT
IL
WI
NY
MA
NJ
CT
CA
VA
MD
NM
KS
TN
DC
GA
TX

Top grantees

Largest recipients by total granted, FY2017 to FY2024, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
St John's College$1,100,00011%
Yale University$80,0002n/a
The Trustees of Mount Holyoke College$60,00060%
Santa Fe Institute$60,00060%
Bridgeport Hospital Foundation Inc$50,00060%
Yale University$40,0001n/a
Wholesome Wave Inc$35,00050%
Save the Sound$35,00030%
Ct League of Conservation Voters Education Fund$32,00064%
Medecins Sans Frontieres USA Inc$27,50060%
Show all 85 grantees
All grantees of The Stewart & Constance Greenfield Foundation by total granted
GranteeTotal grantedYearsShare of their budget
St John's College$1,100,00011%
Yale University$80,0002n/a
The Trustees of Mount Holyoke College$60,00060%
Santa Fe Institute$60,00060%
Bridgeport Hospital Foundation Inc$50,00060%
Yale University$40,0001n/a
Wholesome Wave Inc$35,00050%
Save the Sound$35,00030%
Ct League of Conservation Voters Education Fund$32,00064%
Medecins Sans Frontieres USA Inc$27,50060%
Environmental Defense Fund Incorporated$27,50060%
National Audubon Society Inc$25,00060%
Natural Resources Defense Council Inc$25,00050%
Federation for Jewish Philanthropy of Upper Fairfield County$17,50031%
Congregation Organized for a New Ct$15,00032%
Connecticut Audubon Society Inc$15,00050%
Earthplace Inc$15,00060%
Child Mind Institute Inc$14,00060%
Teach for America Inc$12,50060%
Achievement First Inc$10,00060%
Shelburne Farms$10,0001n/a
Aspetuck Land Trust$8,50060%
The Mount Sinai Medical Center$7,50061%
William J Brennan Center for Justice Inc$7,00060%
Pulmonary Fibrosis Foundation$6,00060%
Connecticut Foodshare Inc$6,00040%
Kipp Foundation$6,00030%
Connecticut Farmland Trust Inc$5,50060%
Planned Parenthood of Southern New England Inc$5,00060%
The American Society for the Protection of Nature in Israel Inc$5,00050%
Soundview Empowerment Alliance Inc$5,00010%
African Mission Healthcare Foundation$5,00010%
Ukraine Aid International Inc$5,00011%
Robin Hood Foundation$5,00020%
The Thoreau Society Inc$4,60050%
Wildearth Guardians$4,25060%
Playwrights Horizons Inc$4,00040%
Wildlife Conservation Society$4,00060%
New Haven International Festival of Arts and Ideas Inc$3,10060%
Technoserve Inc$3,00030%
Jewish Home for the Elderly of Fairfield County Inc$3,00060%
Habitat for Humanity International Inc$3,00030%
American Museum of Natural History$2,75050%
Healthcorps Inc$2,50010%
Touchstones Discussion Project Inc$2,50030%
United Way of Coastal Fairfield County Inc$2,50040%
Metropolitan Museum of Art$2,50010%
Positive Directions Inc$2,5001n/a
Fresh Air Fund$2,50030%
Westport Country Playhouse Inc$2,35040%
The North Shore Land Alliance Inc$2,00010%
The Carter Center Inc$2,00040%
Pacific House Inc$2,00020%
Westport Community Theatre Inc$1,60063%
A Better Chance of Westport Inc$1,50060%
Environment and Human Health Inc$1,50030%
Music Theatre of Ct Inc$1,35060%
Pequot Library Association$1,25030%
American Civil Liberties Union Foundation Inc$1,25020%
Brady Campaign to Prevent Gun Violence$1,25050%
The Alliance for Climate Protection$1,00010%
Smithsonian Institution$1,00030%
American Prairie Foundation$1,00010%
Congregation Emanu-El of the City of New York$1,0002n/a
United States Fund for Unicef$1,00010%
Fidelco Guide Dog Foundation Inc$1,00040%
Temple Israel Westport Inc$1,0004n/a
Board of Jewish Education Inc$1,00010%
Trudeau Institute Inc$75030%
School for Advanced Research$75030%
Westport Historical Society Inc$75030%
Thoreau Farm Trust Inc$50011%
Neighborhood Studios of Fairfield County Inc$5002n/a
The Union of Concerned Scientists Inc$50020%
National Multiple Sclerosis Society$50020%
Builders Beyond Borders$50010%
Charity Navigator$30030%
Moca Ct Inc$2501n/a
Dian Fossey Gorilla Fund International Inc$25010%
Citizens Climate Education Corp$25010%
Education Through Music Inc$25010%
Red Hen Press Inc$25010%
United States Association for UNHCR$25010%
Central Park Conservancy Inc$25010%
Center for Northern Woodlands Education Inc$25010%

What it could do for these grantees

Plus 52 recipients with no EIN on record ($379k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget The Stewart & Constance Greenfield Foundation supplied at peak.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetSt John's College: $1,100,000 over 1y, 0.8% of budgetThe Trustees of Mount Holyoke College: $60,000 over 6y, 0.0% of budgetSanta Fe Institute: $60,000 over 6y, 0.1% of budgetBridgeport Hospital Foundation Inc: $50,000 over 6y, 0.1% of budgetWholesome Wave Inc: $35,000 over 5y, 0.3% of budgetSave the Sound: $35,000 over 3y, 0.2% of budgetCt League of Conservation Voters Education Fund: $32,000 over 6y, 3.5% of budgetMedecins Sans Frontieres USA Inc: $27,500 over 6y, 0.0% of budgetEnvironmental Defense Fund Incorporated: $27,500 over 6y, 0.0% of budgetNational Audubon Society Inc: $25,000 over 6y, 0.0% of budgetNatural Resources Defense Council Inc: $25,000 over 5y, 0.0% of budgetFederation for Jewish Philanthropy of Upper Fairfield County: $17,500 over 3y, 0.7% of budgetCongregation Organized for a New Ct: $15,000 over 3y, 1.5% of budgetConnecticut Audubon Society Inc: $15,000 over 5y, 0.1% of budgetEarthplace Inc: $15,000 over 6y, 0.1% of budgetChild Mind Institute Inc: $14,000 over 6y, 0.0% of budgetTeach for America Inc: $12,500 over 6y, 0.0% of budgetAchievement First Inc: $10,000 over 6y, 0.0% of budgetAspetuck Land Trust: $8,500 over 6y, 0.1% of budgetThe Mount Sinai Medical Center: $7,500 over 6y, 0.6% of budgetWilliam J Brennan Center for Justice Inc: $7,000 over 6y, 0.0% of budgetPulmonary Fibrosis Foundation: $6,000 over 6y, 0.0% of budgetConnecticut Foodshare Inc: $6,000 over 4y, 0.0% of budgetKipp Foundation: $6,000 over 3y, 0.0% of budgetConnecticut Farmland Trust Inc: $5,500 over 6y, 0.4% of budgetPlanned Parenthood of Southern New England Inc: $5,000 over 6y, 0.0% of budgetThe American Society for the Protection of Nature in Israel Inc: $5,000 over 5y, 0.1% of budgetSoundview Empowerment Alliance Inc: $5,000 over 1y, 0.4% of budgetAfrican Mission Healthcare Foundation: $5,000 over 1y, 0.1% of budgetUkraine Aid International Inc: $5,000 over 1y, 1.3% of budgetRobin Hood Foundation: $5,000 over 2y, 0.0% of budgetThe Thoreau Society Inc: $4,600 over 5y, 0.4% of budgetWildearth Guardians: $4,250 over 6y, 0.1% of budgetPlaywrights Horizons Inc: $4,000 over 4y, 0.0% of budgetWildlife Conservation Society: $4,000 over 6y, 0.0% of budgetNew Haven International Festival of Arts and Ideas Inc: $3,100 over 6y, 0.0% of budgetTechnoserve Inc: $3,000 over 3y, 0.0% of budgetJewish Home for the Elderly of Fairfield County Inc: $3,000 over 6y, 0.0% of budgetHabitat for Humanity International Inc: $3,000 over 3y, 0.0% of budgetAmerican Museum of Natural History: $2,750 over 5y, 0.0% of budgetHealthcorps Inc: $2,500 over 1y, 0.1% of budgetTouchstones Discussion Project Inc: $2,500 over 3y, 0.2% of budgetUnited Way of Coastal Fairfield County Inc: $2,500 over 4y, 0.0% of budgetMetropolitan Museum of Art: $2,500 over 1y, 0.0% of budgetFresh Air Fund: $2,500 over 3y, 0.0% of budgetWestport Country Playhouse Inc: $2,350 over 4y, 0.0% of budgetThe North Shore Land Alliance Inc: $2,000 over 1y, 0.1% of budgetThe Carter Center Inc: $2,000 over 4y, 0.0% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 77.

Nonprofits that may fit its grantmaking

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.

Fairfield County's Community Foundation IncCT34.2× affinity15 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Fairfield County's Community Foundation Inc · Connecticut Humanities Council Inc · Newman's Own Foundation · Howard & Katherine Aibel Foundation · Ibm International Foundation · The Carl Marks Foundation Inc · Smilow Foundation · The James & Mary Ellen Marpe Family Foundation · Fjc · Jewish Communal Fund · The Lundberg Family Foundation · The Bessemer Giving 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.

Compare The Stewart & Constance Greenfield Foundation with peer funders

About The Stewart & Constance Greenfield Foundation

How much does The Stewart & Constance Greenfield Foundation give?
The Stewart & Constance Greenfield Foundation reported 1 grants totaling $1,100,000 in its FY2024 IRS filing. It funded between 59 and 81 organizations a year over FY2017 to FY2022.
What does The Stewart & Constance Greenfield Foundation fund?
By grant dollars over FY2017 to FY2024, its largest causes are Environment (43%), Education (42%), Health (4%).
Who are The Stewart & Constance Greenfield Foundation's largest grantees?
By total granted over FY2017 to FY2024: St John's College ($1.1M), Yale University ($80k), The Trustees of Mount Holyoke College ($60k).
Does The Stewart & Constance Greenfield Foundation fund new organizations?
In FY2022, 8% of the organizations it funded were first-time grantees.
Does The Stewart & Constance Greenfield Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as The Stewart & Constance Greenfield Foundation?
Its strongest co-funders, measured against what their size predicts, include Fairfield County's Community Foundation Inc, Connecticut Humanities Council Inc, Newman's Own Foundation.
Where is The Stewart & Constance Greenfield Foundation based?
The Stewart & Constance Greenfield Foundation is based in CT.

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 140 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 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Possibly out of date. A more recent filing (FY2025) is on record and reports no grant expense, so the figures above are from FY2024, the most recent year this funder made grants.

Source object · view filing

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