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· Private foundation
CLAIRE AND JACK NATH
This foundation does not accept unsolicited requests — it funds preselected organizations.
$67k
Granted FY2025
20
Grants
6
Communities
$23k
Largest
01What you fund
01
What you funded, over time
By grantee IRS cause code (NTEE).
A cause breakdown isn’t shown here: 86% of CLAIRE AND JACK NATH’s grantee dollars go to organizations outside the IRS cause taxonomy (common for large international and research funders), so a chart would be mostly “unclassified” and misrepresent the portfolio.
02FY2025 · 20 grants
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k18 grants · $35k
- $10k–50k2 grants · $33k
$2,000
Median grant
6
States reached
$1.6M
Total assets
Largest grants
- VARIOUS UPON REQUEST$22,678
- MASS GENERAL HOSPITAL$10,000
- FRIENDS OF IDF$5,500
- COLUMBIA UNIVERSITY$5,000
- WASHINGTON HEBREW CONG$3,580
- THE DANIEL A NATH CHARITABLE FOUNDA$3,200
- TEMPLE EMETH$3,000
- TEMPLE SHIR TIKVAH$2,500
- WGBH$2,250
- ACC ORCHESTRA$2,000
- SMITH COLLEGE$2,000
- CHABAD OF POTOMAC VILLAGE$2,000
- REVELS INC$1,500
- PLANNED PARENTHOOD$700
- OPPORTUNITY VILLAGE$300
02The need
03
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
show:
Your human-services grants (FY17–23, $9k) land where the poverty rate runs at 9% — the area typically sits at 9%. 44% of those dollars reach neighborhoods with above-average need. Your grants spread fairly evenly across need levels.
grant to an above-average-need area below average· circle size = grant amount
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; grantee ZIP can differ from where services are delivered.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA, United Way ALICE — shown as context about the area, never attributed to your giving.
03Your edge
repeat funding
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
97%of every dollar goes to organizations you’ve funded before.
$536k · 24 repeat orgs$16k to everyone else
24 repeat relationships — 17 still active in FY2025, 7 since wound down; 3 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Re-uppedFunded once
Organizations
24
5
Total granted
$536k
$9k
Still filing today
38%
0%
New vs renewed · share of each year
In FY2025, 89% of grant dollars renewed an existing relationship; $7k went to new ones.
RenewedFirst-time
Where new relationships form · theme of each grantee’s first grant
Arts & CultureHealthHuman ServicesEducationHousing & ShelterEmploymentOther
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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
PRINCETON UNIVERSITY8× · 2017–2025 · $27k · revenue +21%- RIREVELS INC9× · 2017–2025 · $12k · revenue +2%
- GMGAY MENS HEALTH CRISIS9× · 2017–2025 · $12k · revenue +56%
Funded once
- FCFRIENDSHIP CIRCLEone grant, 2020 · $5k
- JSJOSEPH SLIFKA CENTERone grant, 2023 · $2k
- MRMELANOMA RESEARCH FNDone grant, 2017 · $1k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
04Your field
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
1
The George Washington University
Education and research
Education
2
The Rockefeller University
A world-renowned center for research and graduate education.
Education
3
Washington University
The washington university is a co-educational, nondenominational university with a long and distinguished history of teaching, research and (cont'd on schedule o)
Education
4
Trustees of Boston College
Mission strengthened by more than a century and a half of dedication to academic excellence, boston college commits itself to the highest standards of teaching and research in undergraduate, graduate and professional programs and to the…
Education
5
The Rosalind and Joseph Gurwin Jewish
Operation of a nursing home and daycare program
Health
6
Tufts Medical Center Physicians
The tufts medical center physicians organization, inc. coordinates the administrative and billing activities for the group practices in their mission of providing quality health care services to patients of tufts medical center, inc. and…
Health
7
Worcester Center for Performing
The hanover theatre seeks to ignite and nurture a passion for the performing arts in audiences and artists of today and tomorrow. in doing so we will participate fully in the revitalization of downtown worcester by bringing vistiors to the…
Arts & Culture
8
The Washington Hospital
The washington hospital is a community hospital dedicated to improving health / providing patient care to all persons without regard to race, color, religion, sex, national origin, disability or ability to pay.
Health
9
Washington College
Washington college challenges and inspires emerging citizen leaders to discover lives of purpose and passion.
Education
10
National Gallery of Art
The National Gallery of Art serves the nation by welcoming all people to explore and experience art, creativity, and our shared humanity.
Arts & Culture
11
Seattle Opera
To thrill, inspire and educate through the shared experience of opera
Arts & Culture
12
Philadelphia Chamber Music Society
To engage our community in a life more beautiful through the shared experience and transformative impact of chamber music.
Arts & Culture
For reference, the grantee most central to the portfolio’s shape is Rosie's Place Inc and the most unlike its peers is Bender Jcc of Greater Washington. 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
9 grantees, every filing reconciled, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue.
0
Load-bearing (≥25% of a budget)
1
Early backer (in before they grew)
9/9
Grantees still filing
7/9
Grew since you first funded
Where your money sits — by cause, then by grantee
Other$475,165Education$27,250Health$17,900Arts & Culture$15,500Human Services$8,860Housing & Shelter$4,300Employment$3,100
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
American Online Giving Foundation IncDE7.5× affinity4 shared granteesties to 2 of 2Hover any node to trace its alignments.Compare side by side →
Open a dossier: American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organisation CLAIRE AND JACK NATH funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.
2025
’20’21’22’23’24’25
- Brookline Music School Inc — 1% of income from government
no gov moneyreceives it· size = income
1get no government money at all
0rely on government for over half their income
⤢ axis zoomed · 0–10%
typical government reliance, FY20–25
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. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.
05Through Plinth
Through Plinth
Your grantmaking, live and operational
This dossier was generated cold from public filings. In Plinth it’s a working system — every applicant assessed and every grant monitored. Here’s a taste, run on one of your grantees: GEORGE WASHINGTON UNIVERSITY.
Agentic due diligence · confidence × risk
Financial management
medium risk
~4 months of operating runway; revenue contracted over 7 filed years.
Track record & reputation
low risk
7 years of Form 990 filings, still active.
Legal standing
low risk
US 501(c)(3); EIN 432058202 on file with current IRS Form 990 filings.
Governance
Live in Plinth
Board composition & governance documents — verified live in Plinth from the applicant.
Compliance & sanctions
Live in Plinth
OFAC / UN sanctions screening — run live in Plinth at assessment.
Program capacity
Live in Plinth
Staffing, M&E and activity alignment — assessed live in Plinth from submitted proposals.
Live · Plinth’s real DD engine
Run the actual assessment on GEORGE WASHINGTON UNIVERSITY, cold from public data.
Generated live from public IRS filings + open web sources by Plinth’s agentic engine. Shown as an illustration of the product, not a formal assessment.
Post-award monitoring · continuous checks
- WatchFinancial stability— Roughly 4 months of cash on hand.
- WatchSustained operations— Filing through 2025; revenue contracted over the period.
- On trackReliance on your funding— Your grants peaked at 3% of their budget — diversified.
- Awaiting reportEvidence of delivery— Plinth collects the grantee's own monitoring reports post-award.
What you see here is static and public. In Plinth it’s operational — the full six-pillar framework on every applicant (with their own documents + live registry and sanctions checks), monitoring dashboards on every award, custom board reports, and eligibility routing for intake.
Agentic due diligenceMonitoring dashboardsCustom board reportsEligibility routing
Preview generated from this grantee’s public IRS filings and independent reporting. Pillars marked “live in Plinth” require the applicant’s submitted documents. Shown as illustration, not a formal assessment.
Warm introductions · Powered by PlinthPro
How do I get to Claire and Jack Nath?
Find your warmest path to Claire and Jack Nath through people who sit on both boards. Search for your organization and Plinth traces the introduction across shared trustees and officers.
Every link is a documented governance overlap in public IRS 990 filings — not a personal network — and each hop carries its own confidence tier. Low-confidence or distant paths are held back rather than guessed.
More from the funding graph
The regranting layer
51% of grant dollars pass through an intermediary
The DAF merry-go-round
$9.7B circulates between donor-advised funds
Strange bedfellows
the named clusters of US funding
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home
State money flows
the interactive map of money crossing state lines