How much does The Stephen & Suzanne Weiss Foundation I give?

The Stephen & Suzanne Weiss Foundation I reported 28 grants totaling $447,450 in its FY2025 IRS filing. It funded between 18 and 25 organizations a year over FY2020 to FY2024.

What does The Stephen & Suzanne Weiss Foundation I fund?

By grant dollars over FY2020 to FY2025, its largest causes are Education (30%), Health (25%), Philanthropy (10%).

Who are The Stephen & Suzanne Weiss Foundation I's largest grantees?

By total granted over FY2020 to FY2025: Cornell University ($183k), United Jewish Appeal-Federation of Jewish Philanthropies of New York Inc ($70k), Admirals Cove Foundation Inc ($27k).

Does The Stephen & Suzanne Weiss Foundation I fund new organizations?

In FY2024, 11% of the organizations it funded were first-time grantees.

Does The Stephen & Suzanne Weiss Foundation I 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 Stephen & Suzanne Weiss Foundation I?

Its strongest co-funders, measured against what their size predicts, include Hilda & Preston Davis Foundation, The Ayco Charitable Foundation, National Philanthropic Trust.

Where is The Stephen & Suzanne Weiss Foundation I based?

The Stephen & Suzanne Weiss Foundation I is based in CT.

The Stephen & Suzanne Weiss Foundation I

The Stephen & Suzanne Weiss Foundation I at a glance

· Private foundation

The Stephen & Suzanne Weiss Foundation I

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.

$447k

Granted FY2025still arriving

Grants FY2025still arriving

States reached

$150k

Largest

01What it funds

0192% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Education$287kHealth$244kPhilanthropy$97kReligion$32kCivil Rights$18kArts & Culture$7kHuman Services$6kMembership Benefit$3kOther$0

02FY2025 · 28 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

Under $10k19 grants · $30k
$10k–50k5 grants · $118k
$50k–250k4 grants · $300k

$2,750

Median grant

States reached

$20k

Total assets

Largest grants
Recipient	Amount
Individual grant recipient	$150,000
WEILL MEDICAL COLLEGE - DEAN HARRINGTON DISCRETIONARY FUNE	$50,000
CORNELL UNIVERSITY - PRESIDENT MICAEL KOTLIKOFF DISCRETIONARY FUND	$50,000
WEILL MEDICAL COLLEGE - CARDIOTHORACIC SURGEON LEONARD GIRARDI	$50,000
NEW YORK PRESBYTERIAN FUND - PLATES FOR PEDIATRICS	$37,500
HOSPITAL FOR SPECIAL SURGERY FOUNDATION	$25,000
UJA FEDERATION	$20,000
JEWISH COMMUNITY RELATIONS COUNCIL OF NEW YORK	$17,500
BREAKTHROUGH T1D	$17,500
JUPITER MEDICAL CENTER FOUNDATION	$5,000
Individual grant recipient	$5,000
DEERFIELD ACADEMY	$5,000
AMERICAN CANCER SOCIETY	$3,000
EDNA W RUNNER EDUCATION CENTER	$2,750
NATIONAL HUMANITIES CENTER	$2,000

02The need

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 (FY20–25, $6k) land where the poverty rate runs at 9%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

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

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.

75%of every dollar goes to organizations it has funded before.

$726k · 24 repeat orgs$238k to everyone else

24 repeat relationships: 18 still active in FY2025, 6 since wound down; 10 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

Total granted

$726k

$6k

Median revenue growth · since first grant

+8%

+16%

Still filing today

71%

64%

New vs renewed · share of each year

In FY2025, 48% of grant dollars renewed an existing relationship; $232k went to new ones.

RenewedFirst-time

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

HealthEducationPhilanthropyReligionHuman ServicesInternationalOther

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

Cornell University
3× · 2020–2022 · $183k · revenue +46%
UJ
UNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC
6× · 2020–2025 · $70k · revenue +46%
AC
ADMIRALS COVE FOUNDATION INC
2× · 2023–2024 · $27k · revenue +32%

Funded once

CF
CYSTIC FIBROSIS FOUNDATION
one grant, 2020 · $1k · revenue -56%
JM
JOYCE MEYER MINISTRIES INC
one grant, 2022 · $1k
GL
Global Leadership Inc
one grant, 2021 · $1k · revenue -25%

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.

Stony Brook Urology University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health

Stony Brook Internists University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health

Neurology Associates of Stony Brook University Faculty Practice Corp

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health

University of New Haven

The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…

Education

Northeast College of Health Sciences

Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.

Education

Metropolitan Jewish Health System Inc

Mjhs health system is a charitable not-for-profit established to support the activities of affiliated organizations. mjhs is built on the core values of compassion, dignity and respect, first established by the four brooklyn ladies in…

Health

Stony Brook Surgical Associates University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health

Stony Brook Ophthalmology University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health

University Associates in Obstetrics and Gynecology University Faculty Pract ice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health

Stony Brook Childrens Services University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health

Isabella Geriatric Center Inc

Operating as isabella center for rehabilitation and nursing care, isabella is a 705-bed not-for-profit organization that is a member of the mjhs health system family. isabella is committed to providing exceptional short-term, sub-acute…

Human Services

Stony Brook Orthopedic Associates University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health

How this is measured

The grantee most central to the portfolio’s shape is Pencils of Promise Incorporated; the most unlike its peers is Global Leadership 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

28 grantees tracked through their own filings, 2017–2025.

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 2025, not grant rows in a single year, so this will not match the grant count on the cover. 28 of the 45 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.

Load-bearing (≥25% of a budget)

Early backer (in before they grew)

28/28

Grantees still filing

14/28

Grew since first funded

Where the money sits, by cause and then by grantee

Other$572,350Education$211,500Philanthropy$102,000Health$29,350International$24,000Civil Rights$17,500Arts & Culture$7,000

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

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.

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.

Hilda & Preston Davis FoundationFL13.6× affinity4 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Hilda & Preston Davis Foundation · The Ayco Charitable Foundation · National Philanthropic Trust · Vanguard Charitable Endowment Program · Jpmorgan Chase Foundation · Morgan Stanley Global Impact Funding Trust Inc · American Endowment Foundation · Natl Christian Charitable Fdn Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · American Online Giving Foundation Inc · Amazonsmile Foundation

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 The Stephen & Suzanne Weiss Foundation I funds: left to right is the share of its income from government, bottom to top the share from The Stephen & Suzanne Weiss Foundation I. Bigger dots raise more.

2024

’20’21’22’23’24’25

no gov moneyreceives it· size = income

9get no government money at all

2report government grants on their 990 we could not trace to a source (not plotted)

0rely on government for over half their income

⤢ axis zoomed · 0–50%

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.

05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to The Stephen & Suzanne Weiss Foundation I?

Find your warmest path to The Stephen & Suzanne Weiss Foundation I 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.

Play a game based on Stephen & Suzanne Weiss Foundation I’s filings →

More from the funding graph

The unnamed billions

grants reported with no recipient in the public record

The regranting layer

51% of grant dollars land in the regranting layer

The DAF merry-go-round

$9.7B circulates between donor-advised funds

The endowment market

who holds foundation money, and what just moved

The camps

funders cluster by geography, not ideology

By state

where grant money is based, and what stays home