· Private foundation
Walter & Sarah Diener Foundation Inc
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
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2020–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k8 grants · $24k
- $10k–50k6 grants · $167k
| Recipient | Amount |
|---|---|
| HEBREW HOME OF GREATER WASHINGTON | $43,750 |
| MAKOM | $35,000 |
| CHARLES SMITH LIFE COMMUNITIES | $27,500 |
| UNIVERSITY OF MARYLAND HILLELL | $25,000 |
| SUBURBAN HOSPITAL FOUNDATION | $20,000 |
| THE DIENER SCHOOL | $15,708 |
| MEDSTAR HEALTH | $5,000 |
| BREAKTHROUGH T1D | $5,000 |
| CHILDRENS INN | $5,000 |
| BNAI ISRAEL | $3,000 |
| HOPE CONNECTIONS FOR CANCER | $2,000 |
| SUNFLOWER BAKERY | $2,000 |
| LACROSSE THE GLOBE | $1,000 |
| NER ISRAEL RABBINICAL COLLEGE | $750 |
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 (FY21–22, $2k) land where the poverty rate runs at 9%, against an area that typically sits at 8%. 100% 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.
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.
20 repeat relationships — 10 still active in FY2025, 10 since wound down; 4 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, 81% of grant dollars renewed an existing relationship; $36k 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
- SHSUBURBAN HOSPITAL FOUNDATION INC5× · 2021–2025 · $80k · revenue +100%
- TSThe Shepherds Table Inc5× · 2020–2024 · $24k · revenue +24%
- MHMEDSTAR HEALTH INC3× · 2022–2025 · $18k · revenue +31%
Funded once
- WSWOODSIDE SYNAGOGUE AHAVAT TORAHone grant, 2020 · $18k
- NNNOURISH NOW FOUNDATION INCgraduatedone grant, 2021 · $12k · revenue +120%
- SHSUBURBAN HOSPITAL INCgraduatedone grant, 2020 · $8k · revenue +37%
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.
For more than 125 years, the mission of the johns hopkins hospital has been to lead the world in the diagnosis and treatment of disease and to train tomorrow's great physicians, nurses and scientists. above all, we aim to provide the…
Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.
Johns hopkins health system corporation provides centralized management of a multi-hospital healthcare system. it is a key component of johns hopkins medicine, a collaboration with the johns hopkins university school of medicine.
Fred hutch cancer center ("fred hutch") unites innovative research and compassionate care to prevent and eliminate cancer and infectious disease. continued on schedule o
See schedule o medstar franklin square medical center, a member of medstar health, provides the highest quality healthcare and education to our communities.
Sibley memorial hospital in washington, d.c., a member of johns hopkins medicine, has a distinguished history of serving the community since its founding in 1890. as a not-for-profit, full-service community hospital, sibley offers…
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.
As a leading academic healthcare organization, our mission is to elevate the health status of the communities we serve.(see schedule o for continuation)(continued)-we deliver exceptional healthcare enhanced by research and education-we…
The mission of dfci is to provide expert, compassionate, and equitable care to children, adults, and their families, while advancing the understanding, diagnosis, treatment, cure, and prevention of cancer and related diseases. we train new…
See schedule omedstar health research institute is dedicated to supporting the academic platform of medstar health by conducting high quality translational and health sciences research throughout the medstar system.
Mass general brigham incorporated is developing an integrated health care delivery system throughout the region that offers patients a continuum of coordinated, high-quality care.
The mission of the institute has remained constant since its founding in 1953. as its restated articles of incorporation state the primary purpose and objective of the howard hughes medical institute shall be the promotion of human…
For reference, the grantee most central to the portfolio’s shape is Suburban Hospital Foundation Inc and the most unlike its peers is Guardian Training. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 29 years old; the field is 17. You back the established end — and your money leans older still.
The field is 20% startups (under 5 years old) — 5% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 12% 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.
21 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. 21 of the 41 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 HEBREW HOME OF GREATER WASHINGTON INC ↗
- Who funds SUBURBAN HOSPITAL FOUNDATION INC ↗
- Who funds THE DIENER SCHOOL INC ↗
- Who funds The Shepherds Table Inc ↗
- Who funds MEDSTAR HEALTH INC ↗
- Who funds MAIN STREET CONNECT INC ↗
- Who funds CHILDREN'S INN AT NIH INC ↗
- Who funds NOURISH NOW FOUNDATION INC ↗
- Who funds SUBURBAN HOSPITAL INC ↗
- Who funds WORLD CENTRAL KITCHEN INC ↗
- Who funds HOPE CONNECTIONS FOR CANCER SUPPORT INC ↗
- Who funds AMERICAN CANCER SOCIETY INC ↗
- Who funds BREAKTHROUGH T1D ↗
- Who funds HOLY CROSS HEALTH FOUNDATION INC ↗
- Who funds The United States Holocaust Memorial Museum ↗
- Who funds THE BREAST CANCER RESEARCH FOUNDATION INC ↗
- Who funds SUNFLOWER BAKERY INC ↗
- Who funds Guardian Training ↗
- Who funds FAMILY SERVICES INC ↗
- Who funds HEARTS AND HOMES FOR YOUTH INC ↗
- Who funds BAR ILAN UNIVERSITY IN ISRAEL INC ↗
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: Greater Washington Community Foundation · Bender Foundation Inc · The Gary and Pennie Abramson Charitable Foundation · Clark-Winchcole Foundation · The Morris and Gwendolyn Cafritz Foundation · Wolpoff Family Foundation · Ronald & Joy Paul Family Foundation Inc · Healthcare Initiative Foundation · Adventist Healthcare Inc · The Phase Foundation · William S Abell Foundation Inc · Clark Charitable Foundation Inc Dba a James & Alice B Clark 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 Walter & Sarah Diener Foundation Inc 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.
- Medstar Health Inc — 23% of income from government
- Children's Inn at Nih Inc — 10% of income from government
- Hebrew Home of Greater Washington Inc — 0% of income from government
- Suburban Hospital Inc — 0% 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 Walter & Sarah Diener Foundation Inc?
Find your warmest path to Walter & Sarah Diener Foundation Inc 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.