How much does The Harold Wetterberg Foundation give?

The Harold Wetterberg Foundation reported 49 grants totaling $210,000 in its FY2025 IRS filing. It funded between 47 and 57 organizations a year over FY2018 to FY2024.

What does The Harold Wetterberg Foundation fund?

By grant dollars over FY2017 to FY2025, its largest causes are Education (33%), Arts & Culture (16%), Animals (14%).

Who are The Harold Wetterberg Foundation's largest grantees?

By total granted over FY2017 to FY2025: American Veterinary Medical Foundation ($173k), Roundabout Theatre Company Inc ($90k), Rowan University Foundation Inc ($50k).

Does The Harold Wetterberg Foundation fund new organizations?

In FY2024, 21% of the organizations it funded were first-time grantees.

Does The Harold Wetterberg Foundation accept unsolicited applications?

Its most recent filing reports that it accepts unsolicited grant applications.

Which funders back the same organizations as The Harold Wetterberg Foundation?

Its strongest co-funders, measured against what their size predicts, include Princeton Area Community Foundation Inc, The Robert Wood Johnson Foundation, Investors Foundation Inc.

Where is The Harold Wetterberg Foundation based?

The Harold Wetterberg Foundation is based in NJ.

The Harold Wetterberg Foundation

The Harold Wetterberg Foundation at a glance

· Private foundation

The Harold Wetterberg Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$210k

Granted FY2025still arriving

Grants FY2025still arriving

States reached

$50k

Largest

01What it funds

0199% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$552kArts & Culture$276kAnimals$237kHealth$186kPhilanthropy$137kRecreation & Sports$59kHuman Services$48kReligion$36kOther$0

02FY2025 · 49 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

Under $10k45 grants · $80k
$10k–50k3 grants · $80k
$50k–250k1 grant · $50k

$1,500

Median grant

States reached

$1.7M

Total assets

Largest grants
Recipient	Amount
ROWAN UNIVERSITY FOUNDATION	$50,000
DREW UNIVERSITY	$30,000
ROUNDABOUT THEATRE COMPANY	$25,000
COMMUNITY FOUNDATION OF GREENVILLE	$25,000
DREW O'DONOGHUE FUND INC	$5,000
TUNNELS TO TOWER FOUNDATION	$5,000
STATE THEATER OF NEW JERSEY	$5,000
BUCKS COUNTY PLAYHOUSE	$5,000
SAFE HARBOR	$5,000
CHILDREN'S HOSPITAL OF PHILADELPHIA	$4,000
LORE SCHOOL PARENTS ASSOCIATION INC	$3,000
ALZHEIMER'S ASSOCIATION	$3,000
COMMUNITY KARMA	$2,500
DISABILITY RIGHTS NEW JERSEY	$2,000
MARKET STREET MISSION INC	$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 (FY17–25, $57k) land where the poverty rate runs at 11%, against an area that typically sits at 9%. 63% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-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.

79%of every dollar goes to organizations it has funded before.

$1.2M · 84 repeat orgs$317k to everyone else

Grantees it renews have grown median revenue +27% since the first grant, against +15% for those funded once.

84 repeat relationships: 44 still active in FY2025, 40 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

Total granted

$1.2M

$265k

Median revenue growth · since first grant

+27%

+15%

Still filing today

54%

29%

New vs renewed · share of each year

In FY2025, 72% of grant dollars renewed an existing relationship; $52k went to new ones.

RenewedFirst-time

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

HealthEducationHuman ServicesArts & CultureAnimalsPhilanthropyOther

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

AV
AMERICAN VETERINARY MEDICAL FOUNDATION
8× · 2017–2024 · $173k · revenue +19%
DU
DREW UNIVERSITY
2× · 2024–2025 · $50k · revenue +3%
AT
ATLANTIC THEATER COMPANY
7× · 2017–2024 · $49k · revenue +51%

Funded once

UO
UNIVERSITY OF WISCONSIN-MADISON (ANSEN-WILSON)
one grant, 2017 · $13k
UO
UNIVERSITY OF CALIFORNIA-DAVIS (SCHLESINGER)
one grant, 2021 · $13k
CU
CORNELL UNIVERSITY (LACHENAUER)
one grant, 2017 · $13k

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.

The Jewish Museum

The mission of the jewish museum is to collect, preserve, exhibit and interpret art and jewish culture. see schedule o for more information.

Arts & Culture

New York Genome Center Inc

Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.

Health

Albert Einstein College of Medicine

Committed to exceptional healthcare quality for all and actively engaged with our community, einstein drives scientific discovery and educates compassionate leaders in health and science.

Education

The Trustees of Princeton University

Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…

Education

Public Media Nj Inc

To bring quality public television programs and resources to communities throughout new jersey and its tri-state neighbors. its content, both on-air and online, aims to reflect the diverse

Arts & Culture

Manhattanville University

To educate students to be ethical and socially responsible leaders in a global community.

Education

New York University

Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.

Education

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

Memorial Sloan-Kettering Cancer Center

Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.

Health

Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation

The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.

Science & Tech

Jfk Medical Associates Pa

Jfk medical associates, p.a. is committed to excellence in providing quality and compassionate healthcare services to diverse communities.

Health

Jewish Communal Fund

To facilitate and promote philanthropy through donor advised funds.

Philanthropy

How this is measured

The grantee most central to the portfolio’s shape is Mercy Center Corporation; the most unlike its peers is Play With Jack Foundation 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

69 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. 69 of the 143 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)

67/69

Grantees still filing

44/69

Grew since first funded

Where the money sits, by cause and then by grantee

Other$787,715Education$206,700Animals$187,750Arts & Culture$187,500Philanthropy$165,335Health$77,000Human Services$60,000

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.

Princeton Area Community Foundation IncNJ22.1× affinity9 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Princeton Area Community Foundation Inc · The Robert Wood Johnson Foundation · Investors Foundation Inc · Bristol-Myers Squibb Foundation Inc · Manasquan Bank Charitable Foundation Inc · New Jersey Natural Gas Company Charity Inc · Citizens Philanthropic Foundation Inc · The Provident Bank Foundation · Oceanfirst Foundation · Columbia Bank Foundation · Community Foundation of New Jersey · The Dardin Fund 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 The Harold Wetterberg Foundation funds: left to right is the share of its income from government, bottom to top the share from The Harold Wetterberg Foundation. Bigger dots raise more.

2024

’20’21’22’23’24’25

no gov moneyreceives it· size = income

21get no government money at all

14report government grants on their 990 we could not trace to a source (not plotted)

0rely on government for over half their income

⤢ axis zoomed · 0–90%

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.

05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to The Harold Wetterberg Foundation?

Find your warmest path to The Harold Wetterberg 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 Harold Wetterberg’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