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Connecticut · Private foundation

The Orenstein 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.

$81k
Granted FY2025(still arriving)
10
Grants FY2025
13
Organizations funded FY2024
31%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$4,000
Largest grant, FY2025
$30,000
Organizations funded a year
3 to 13
FY2018 to FY2024
States reached, FY2025
4
Total assets, FY2025
$1.4M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 31% of the organizations The Orenstein Family Foundation funded were first-time grantees, receiving 16% of its grant dollars.

New vs renewed · share of each year

In FY2024, 84% of grant dollars renewed an existing relationship; $11k went to new ones.

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

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

’18’19’20’21’22’23’24
HealthEnvironmentRecreation & SportsPhilanthropyCommunity ImprovementArts & CultureOther
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
FY2025still arriving10$81k30%
FY202413$67k31%
FY202313$53k69%
FY20223$18k33%
FY20213$47k33%
FY202010$34k70%
FY20199$21k56%
FY201813$46k54%
97% classified

What it funded, over time

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

Education$113kHousing & Shelter$66kArts & Culture$44kPhilanthropy$37kEnvironment$18kHealth$16kRecreation & Sports$11kInternational$8kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

WA
IL
MI
NY
MA
OR
OH
CT
KS
NC
DC
TX

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 33 grantees

What it could do for these grantees

Plus 18 recipients with no EIN on record ($155k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget The Orenstein Family Foundation supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetDuke University: $72,100 over 9y, 0.0% of budgetMaloto Inc: $25,000 over 1y, 1.8% of budgetSyracuse University: $24,500 over 5y, 0.0% of budgetNorwalk Housing Foundation Inc: $20,500 over 2y, 4.0% of budgetFairfield Theatre Company Inc: $17,200 over 2y, 0.3% of budgetKing School Inc: $15,499 over 5y, 0.0% of budgetThe Stamford Hospital: $10,000 over 1y, 0.0% of budgetNantucket Land & Water Council Inc: $9,000 over 2y, 0.3% of budgetNantucket Student Lacrosse Inc: $8,500 over 3y, 5.8% of budgetPartners in Health a Nonprofit Corporation: $7,500 over 2y, 0.0% of budgetAmerica Gives Inc: $5,000 over 1y, 0.0% of budgetNantucket Shellfish Association Inc: $4,500 over 2y, 0.7% of budgetNorwalk Hospital Foundation: $3,500 over 1y, 0.0% of budgetProject Koru: $3,000 over 1y, 1.2% of budgetPlanned Parenthood: $2,500 over 1y, 0.9% of budgetToledo Science Center: $2,500 over 2y, 0.0% of budgetChild Advocates of Connecticut Inc: $2,500 over 1y, 0.6% of budgetDarien EMS Post 53 Inc: $2,000 over 1y, 0.3% of budgetConnecticut Foodshare Inc: $2,000 over 1y, 0.0% of budgetDarien Nature Center Inc: $1,500 over 1y, 0.1% of budgetBuilding One Community Corp: $1,000 over 1y, 0.1% of budgetFuture 5 Inc: $1,000 over 1y, 0.1% of budgetNorwalkstamford Grassroots Tennis & Education Inc: $1,000 over 1y, 0.1% of budgetBuild Inc: $753 over 2y, 0.0% of budgetThe Borgen Project: $150 over 1y, 0.0% of budgetPerson to Person Inc: $103 over 1y, 0.0% of budgetDarien Police Association Inc: $100 over 1y, 0.0% of budgetWaterside School Inc: $50 over 1y, 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 28.

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.

The Goodnow FundCT15.7× affinity5 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Goodnow Fund · Fairfield County's Community Foundation Inc · Bassler Family Foundation Inc · The Near and Far Association Inc · New Canaan Community Foundation Inc · Ge Aerospace Foundation · The Pfizer Foundation Inc · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · American Endowment Foundation · Morgan Stanley Global Impact Funding Trust Inc

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 Orenstein Family Foundation with peer funders

About The Orenstein Family Foundation

How much does The Orenstein Family Foundation give?
The Orenstein Family Foundation reported 10 grants totaling $81,000 in its FY2025 IRS filing. It funded between 3 and 13 organizations a year over FY2018 to FY2024.
What does The Orenstein Family Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Education (34%), Housing & Shelter (19%), Arts & Culture (13%).
Who are The Orenstein Family Foundation's largest grantees?
By total granted over FY2017 to FY2025: Duke University ($72k), Maloto Inc ($25k), Syracuse University ($25k).
Does The Orenstein Family Foundation fund new organizations?
In FY2024, 31% of the organizations it funded were first-time grantees.
Does The Orenstein Family 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 Orenstein Family Foundation?
Its strongest co-funders, measured against what their size predicts, include The Goodnow Fund, Fairfield County's Community Foundation Inc, Bassler Family Foundation Inc.
Where is The Orenstein Family Foundation based?
The Orenstein Family 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 52 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 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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