· Private foundation
The Mortimer & Barbara Klaus 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.
What you funded, over time
By grantee IRS cause code (NTEE).
A cause breakdown isn’t shown here: 84% of THE MORTIMER & BARBARA KLAUS FAMILY FOUNDATION’s grantee dollars fall outside its nine largest cause areas, whether because the recipient carries no IRS cause code or because its cause sits in the long tail. A chart would be mostly one residual band and misrepresent the portfolio.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k29 grants · $91k
- $10k–50k6 grants · $92k
| Recipient | Amount |
|---|---|
| MAIMONIDES MEDICAL CENTER | $25,000 |
| TEMPLE EMANUEL | $18,000 |
| SAJ | $18,000 |
| CONGREGATION BETH DAVID | $11,400 |
| SHARON HOSPITAL | $10,000 |
| Individual grant recipient | $10,000 |
| PARK AVENUE SYNAGOGUE | $9,919 |
| NATIONAL ALLIANCE ON MENTAL ILLNESS OF NYC (NAMI-NYC) | $5,000 |
| CITY HARVEST DONOR SYSTEMS | $5,000 |
| JEWISH FEDERATION OF SOUTH PALM BEACH COUNTY | $5,000 |
| SECOND HARVEST FOOD BANK OF NORTHWEST NC | $5,000 |
| MAZON | $5,000 |
| MEMORIAL SLOAN KETTERING CANCER CENTER | $5,000 |
| SHEFFIELD KIWANIS FOUNDATION | $5,000 |
| WORLD CENTRAL KITCHEN | $5,000 |
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.
Your human-services grants (FY22–25, $25k) land where the poverty rate runs at 13%, against an area that typically sits at 12%. 59% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
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 — shown as context about the area, never attributed to your giving.
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.
33 repeat relationships — 29 still active in FY2025, 4 since wound down; 5 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 93% of grant dollars renewed an existing relationship; $13k went to new ones.
Where new relationships form · theme of each grantee’s first grant
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
- MMMAIMONIDES MEDICAL CENTER4× · 2022–2025 · $105k · revenue +25%
- UJUNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC3× · 2022–2024 · $46k · revenue +19%
SECOND HARVEST FOOD BANK OF NORTHWEST NC INC4× · 2022–2025 · $23k · revenue +21%
Funded once
- JJDCone grant, 2022 · $18k
- PAPARK AVENUE SYNAGOGUE MEMBERSHIPone grant, 2022 · $15k
- YTYeshiva Tiferes Yisroelone grant, 2022 · $10k · revenue -21%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
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.
The network is an international membership association of more than 170 non profit human service agencies in the united states, canada and israel. its members provide a full range of human services for the jewish community and beyond,…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Jewish home lifecare (d/b/a the new jewish home, manhattan), is a not-for-profit organization committed to transforming eldercare for new yorkers so they can live meaningful lives in the place they call home.
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…
A non-profit organization dedicated to maintaining the independence and dignity of seniors and at risk populations through a spectrum of services. selfhelp is a not-for-profit organization dedicated to maintaining the independence and…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
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…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
& part iii, line 1: the mission of the nassau-suffolk hospital council, inc. (nshc) is to:- provide a forum for the exchange of ideas regarding the development of regional, state, and national health policy,- identify key policy issues…
The mission of the daughters of sarah nursing center, inc. is to enhance the quality of life, assure the safety and dignity, and foster the independence of those we serve through residential, personal care, health and other quality…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
For reference, the grantee most central to the portfolio’s shape is West Side Center for Community Life and the most unlike its peers is The One East Sixtieth Street Historical Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 41 years old; the field is 18. You back the established end — and your money leans older still.
The field is 19% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 10% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
25 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 25 of the 54 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
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.
- Who funds MAIMONIDES MEDICAL CENTER ↗
- Who funds UNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC ↗
- Who funds SECOND HARVEST FOOD BANK OF NORTHWEST NC INC ↗
- Who funds MAZON A Jewish Response to Hunger ↗
- Who funds SHARON FIRE DEPARTMENT INC ↗
- Who funds HABITAT FOR HUMANITY OF FORSYTH COUNTY INC ↗
- Who funds Children's Home Society of North Carolina Inc ↗
- Who funds Yeshiva Tiferes Yisroel ↗
- Who funds THE MENTAL HEALTH ASSOCIATION IN FORSYTH COUNTY INC ↗
- Who funds CHORE SERVICE INC ↗
- Who funds LIVING RESOURCES CORPORATION ↗
- Who funds JEWISH FEDERATION OF SOUTH PALM BEACH COUNTY INC ↗
- Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
- Who funds WEST SIDE CENTER FOR COMMUNITY LIFE ↗
- Who funds WORLD CENTRAL KITCHEN INC ↗
- Who funds PROJECT SAGE INC ↗
- Who funds HOTCHKISS LIBRARY OF SHARON INC ↗
- Who funds NEW YORK LAW SCHOOL ↗
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.
Open a dossier: Walter and Phyllis Ann Borten Foundation · Northwest Connecticut Community Foundation Inc · MJPM Foundation · Peter and Helen Haje Foundation · The Robert L and Jean Clarke Family Foundation · The Hallingby Family Foundation Inc · Low Road Foundation · Berkshire Taconic Community Foundation Inc · The New York Community Trust · The Rhoades-Robinson Fund · Easton Family Fund · Tilia 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 organization The Mortimer & Barbara Klaus Family Foundation 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.
- Northwest Connecticut Land Conservancy Inc — 9% of income from government
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 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.
Warm introductions · Powered by PlinthPlus
How do I get to The Mortimer & Barbara Klaus Family Foundation?
Find your warmest path to The Mortimer & Barbara Klaus Family 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.