How much does Jaf Foundation give?

Jaf Foundation reported 20 grants totaling $359,500 in its FY2024 IRS filing. It funded between 16 and 23 organizations a year over FY2017 to FY2023.

What does Jaf Foundation fund?

By grant dollars over FY2017 to FY2024, its largest causes are Arts & Culture (53%), Health (19%), Education (7%).

Who are Jaf Foundation's largest grantees?

By total granted over FY2017 to FY2024: Byrd Hoffman Water Mill Foundation ($1.0M), Scoa Inc ($610k), Icahn School of Medicine at Mount Sinai ($500k).

Does Jaf Foundation fund new organizations?

In FY2023, 14% of the organizations it funded were first-time grantees.

Does Jaf 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 Jaf Foundation?

Its strongest co-funders, measured against what their size predicts, include The New York Community Trust, Gardner Cowles III Charitable Foundation, Audrey and Martin Gruss Foundation.

Jaf Foundation

Jaf Foundation at a glance Also receives grants: funding profile →

· Private foundation

Jaf Foundation

Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$360k

Granted FY2024still arriving

Grants FY2024still arriving

States reached

$140k

Largest

01What it funds

0196% classified

What it funded, over time

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

Arts & Culture$2.1MHealth$724kEducation$258kInternational$224kScience & Tech$165kRecreation & Sports$119kEnvironment$71kYouth Development$65kOther$0

02FY2024 · 20 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

Under $10k12 grants · $33k
$10k–50k6 grants · $130k
$50k–250k2 grants · $197k

$2,500

Median grant

States reached

$9.2M

Total assets

Largest grants
Recipient	Amount
ETH FOUNDATION	$140,000
SOUTH FORK NATURAL HISTORY MUSEUM	$57,000
PESTALOZZI US CHILDRENS CHARITY INC	$45,000
BYRD HOFFMAN WATERMILL FOUNDATION	$30,000
SOUTHAMPTON ARTS CENTER	$25,000
GABRIELLES ANGELS FOUNDATION	$10,000
Syracuse University College of Law	$10,000
SOUTHAMPTON ROSE SOCIETY	$10,000
The Opera Foundation	$5,000
SAG HARBOR PARTNERSHIP	$2,500
SAG HARBOR FIRE DEPARTMENT	$2,500
Heart of The Hamptons	$2,500
Southampton Hospital Foundation	$2,500
ANIMAL RESCUE FUND OF THE HAMPTONS INC	$2,500
SAG HARBOR VOLUNTEER AMBULANCE	$2,500

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 (FY17–21, $15k) land where the poverty rate runs at 7%, against an area that typically sits at 11%. 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.

95%of every dollar goes to organizations it has funded before.

$3.7M · 31 repeat orgs$192k to everyone else

Grantees it renews have grown median revenue +38% since the first grant, against +25% for those funded once.

31 repeat relationships: 20 still active in FY2024, 11 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

Total granted

$3.7M

$192k

Median revenue growth · since first grant

+38%

+25%

Still filing today

65%

64%

New vs renewed · share of each year

In FY2024, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

RenewedFirst-time

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

Arts & CultureHealthEnvironmentEducationPhilanthropyCommunity ImprovementOther

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

SI
SCOA INC
7× · 2017–2024 · $610k · revenue +95%
ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
3× · 2020–2023 · $500k · revenue +39%
SF
SOUTH FORK NATURAL HISTORY SOCIETY
8× · 2017–2024 · $385k · revenue +29%

Funded once

DB
DAVID BROWER CENTER
one grant, 2017 · $50k · revenue +1%
PC
PROSTATE CANCER FOUNDATION
one grant, 2021 · $50k · revenue +7%
AP
AMERICAN PASTIME
one grant, 2021 · $25k

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.

United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

—

Nantucket Conservation Foundation Inc

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…

Environment

The Sargasso Sea Project Inc

The mission of the organization is to achieve international recognition of the importance of the Sargasso Sea and to develop protection measures for it through competent regional and international organizations.

Environment

South Shore University Hospital

South shore university hospital is part of northwell health ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality clinical care; educating the current and future…

Health

Harvard Conservation Trust

To preserve the unique character and natural resources of harvard.

Environment

Peconic Public Broadcasting

Peconic Public Broadcasting is a public FM radio station located in Southampton, New York. The station services Long Island and coastal Connecticut and offers listeners both national and local programs.

—

Brooklyn Navy Yard Development Corp

To manage the brooklyn navy yard for the city of new york, specifically to expand job opportunities for new yorkers by fostering the development of small businesses.

Community Improvement

The Trustees of the New York Society Library

The new york society library was founded in 1754 by the new york society, a civic-minded group formed in the belief that the availability of books would help the city of new york to prosper.

—

Governors Island Corporation

The governors island corporation, doing business as the trust for governors island, is the 501(c)(3) not-for-profit organization created by the city of new york and charged with the planning, redevelopment and ongoing operations of 150…

Animals

Susquehanna Heritage Corporation

As a designated national and state heritage area, susquehanna heritage corporation works to raise awareness and appreciation of the cultural and economic value of the susquehanna riverlands, and preserve, enhance and celebrate the area's…

Community Improvement

SouthStreet Seaport Museum Foundation

Support and foster growth of the south street seaport museum via loans of collections to the museum for exhibit.

Philanthropy

Suny Maritime Foundation Inc

The suny maritime foundation, inc. is the primary organization to raise and manage private financial support for suny maritime college. this support assists suny maritime to achieve its mission and vision while at the same time enriching…

Education

How this is measured

The grantee most central to the portfolio’s shape is The Southampton Hospital Foundation Inc; the most unlike its peers is Dana-Farber Cancer Institute 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

31 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. 31 of the 46 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)

30/31

Grantees still filing

23/31

Grew since first funded

Where the money sits, by cause and then by grantee

Arts & Culture$1,776,038Other$690,747Education$575,000Environment$445,000Philanthropy$278,695Human Services$65,000Health$62,750

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.

The New York Community TrustNY16.5× affinity6 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The New York Community Trust · Gardner Cowles III Charitable Foundation · Audrey and Martin Gruss Foundation · Martin D & Jean Shafiroff Foundation · Earle I Mack Foundation Inc · Andrew Sabin Family Foundation · Jewish Communal Fund · National Philanthropic Trust · Morgan Stanley Global Impact Funding Trust Inc · Vanguard Charitable Endowment Program · The Bank of America Charitable Foundation Inc · Donor Advised Charitable Giving 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.

How much its grantees rely on government

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

2024

’20’21’22’23’24’25

no gov moneyreceives it· size = income

1get no government money at all

8report government grants on their 990 we could not trace to a source (not plotted)

0rely on government for over half their income

⤢ axis zoomed · 0–25%

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 Jaf Foundation?

Find your warmest path to Jaf Foundation 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 Jaf’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