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Walter & Sarah Diener Foundation Inc at a glance

· 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.

$191k
Granted FY2025still arriving
14
Grants FY2025still arriving
2
States reached
$44k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0188% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Health$244kHuman Services$200kReligion$173kPhilanthropy$93kHousing & Shelter$43kEducation$32kInternational$13kFood & Nutrition$12kOther$0
02FY2025 · 14 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k8 grants · $24k
  • $10k–50k6 grants · $167k
$5,000
Median grant
2
States reached
$1.2M
Total assets
Largest grants
RecipientAmount
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
BREAKTHROUGH T1D$5,000
CHILDRENS INN$5,000
MEDSTAR HEALTH$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
02The need
03

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 (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 its grants land in higher-need ZIPs.

area typical 8%FAMILY SERVICES INC: $1k → 11%HEARTS & HOMES FOR YOUTH INC: $1k → 8%0%20%40%50%more need →
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.
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.

90%of every dollar goes to organizations it has funded before.
$860k · 20 repeat orgs$101k to everyone else

Grantees it renews have grown median revenue +24% since the first grant, against +21% for those funded once.

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

Re-uppedFunded once

Organizations

20
17

Total granted

$860k
$65k

Median revenue growth · since first grant

+24%
+21%

Still filing today

45%
59%

New vs renewed · share of each year

In FY2025, 81% of grant dollars renewed an existing relationship; $36k went to new ones.

50%100%’20’21’22’23’24’25
RenewedFirst-time

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

’20’21’22’23’24’25
HealthHuman ServicesEducationRecreation & SportsFood & NutritionEmploymentOther
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

  • SH
    SUBURBAN HOSPITAL FOUNDATION INC
    5× · 2021–2025 · $80k · revenue +100%
  • TS
    The Shepherds Table Inc
    5× · 2020–2024 · $24k · revenue +24%
  • MH
    MEDSTAR HEALTH INC
    3× · 2022–2025 · $18k · revenue +31%

Funded once

  • WS
    WOODSIDE SYNAGOGUE AHAVAT TORAH
    one grant, 2020 · $18k
  • NN
    NOURISH NOW FOUNDATION INCgraduated
    one grant, 2021 · $12k · revenue +120%
  • SH
    SUBURBAN HOSPITAL INCgraduated
    one grant, 2020 · $8k · revenue +37%
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.

1
The Johns Hopkins Hospital

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…

Health
2
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
3
Johns Hopkins Health System Corporation

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.

Health
4
Fred Hutchinson Cancer Center

Fred hutch cancer center ("fred hutch") unites innovative research and compassionate care to prevent and eliminate cancer and infectious disease. continued on schedule o

Health
5
Franklin Square Hospital Center Inc

See schedule o medstar franklin square medical center, a member of medstar health, provides the highest quality healthcare and education to our communities.

Health
6
Lucy Webb Hayes National Training School for Deaconesses & Missionaries

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…

Health
7
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
8
Cedars-Sinai Medical Center

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…

Health
9
Dana-Farber Cancer Institute Inc

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…

Health
10
Medstar Health Research Institute Inc

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.

—
11
Mass General Brigham Incorporated & Affiliates Group Return

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.

Health
12
Howard Hughes Medical Institute

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…

Health
How this is measured
The grantee most central to the portfolio’s shape is Suburban Hospital Foundation Inc; 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.
04the grantee network

21 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. 21 of the 41 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.

0
Load-bearing (≥25% of a budget)
5
Early backer (in before they grew)
21/21
Grantees still filing
15/21
Grew since first funded

Where the money sits, by cause and then by grantee

HEBREW HOME OF: $189,250 · OtherHEBREW HOME OFMAKOM: $90,000 · OtherMAKOMJEWISH FOUNDATION FOR: $87,500 · OtherJEWISH FOUNDATION FORUNIVERSITY OF MARYLAND HILLELL: $65,000 · OtherUNIVERSITY OF MARYLAND HILLELLUNIVERSITY OF MARYLAND HILLEL: $50,000 · OtherUNIVERSITY OF MARYLAND HILLELIndividual grant recipient: $45,000 · OtherIndividual grant recipientCHARLES SMITH LIFE COMMUNITIES: $27,500 · OtherThe Shepherds Table Inc: $24,000 · Other+19 more: $77,650 · Other+19 moreHEBREW HOME OF GREATER WASHINGTON INC: $99,110 · HealthHEBREW HOME OF GREATER WASHI…SUBURBAN HOSPITAL FOUNDATION INC: $80,000 · HealthSUBURBAN HOSPITAL FOUNDATION…MEDSTAR HEALTH INC: $17,500 · HealthMEDSTAR HEALTH INCCHILDREN'S INN AT NIH INC: $15,000 · HealthCHILDREN'S INN AT NIH INC+5 more: $26,000 · Health+5 moreTHE DIENER SCHOOL INC: $30,708 · EducationMAIN STREET CONNECT INC: $15,000 · Housing & ShelterNOURISH NOW FOUNDATION INC: $11,500 · Food & NutritionWORLD CENTRAL KITCHEN INC: $7,000 · InternationalTHE BREAST CANCER RESEARCH FOUNDATION INC: $2,500 · Public Safety & Disaster
Other$655,900Health$237,610Education$30,708Housing & Shelter$15,000Food & Nutrition$11,500International$7,000Public Safety & Disaster$2,500

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$10M$100Mgrantee revenue →↑ funder's share of their budgetHEBREW HOME OF GREATER WASHINGTON INC: $99,110 over 2y, 0.1% of budgetSUBURBAN HOSPITAL FOUNDATION INC: $80,000 over 5y, 0.3% of budgetTHE DIENER SCHOOL INC: $30,708 over 2y, 0.3% of budgetThe Shepherds Table Inc: $24,000 over 5y, 0.4% of budgetMEDSTAR HEALTH INC: $17,500 over 3y, 0.0% of budgetMAIN STREET CONNECT INC: $15,000 over 2y, 0.8% of budgetCHILDREN'S INN AT NIH INC: $15,000 over 2y, 0.1% of budgetNOURISH NOW FOUNDATION INC: $11,500 over 1y, 0.8% of budgetSUBURBAN HOSPITAL INC: $7,500 over 1y, 0.0% of budgetWORLD CENTRAL KITCHEN INC: $7,000 over 2y, 0.0% of budgetHOPE CONNECTIONS FOR CANCER SUPPORT INC: $6,000 over 3y, 0.1% of budgetAMERICAN CANCER SOCIETY INC: $5,000 over 1y, 0.0% of budgetBREAKTHROUGH T1D: $5,000 over 1y, 0.0% of budgetHOLY CROSS HEALTH FOUNDATION INC: $2,500 over 1y, 0.2% of budgetTHE BREAST CANCER RESEARCH FOUNDATION INC: $2,500 over 1y, 0.0% of budgetThe United States Holocaust Memorial Museum: $2,500 over 1y, 0.0% of budgetGuardian Training: $2,000 over 1y, 0.8% of budgetSUNFLOWER BAKERY INC: $2,000 over 1y, 0.1% of budgetBAR ILAN UNIVERSITY IN ISRAEL INC: $1,000 over 1y, 0.0% of budgetFAMILY SERVICES INC: $1,000 over 1y, 0.0% of budgetHEARTS AND HOMES FOR YOUTH INC: $1,000 over 1y, 0.0% of budget
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.

  • 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 BREAST CANCER RESEARCH FOUNDATION INC ↗
  • Who funds The United States Holocaust Memorial Museum ↗
  • Who funds Guardian Training ↗
  • Who funds SUNFLOWER BAKERY INC ↗
  • Who funds BAR ILAN UNIVERSITY IN ISRAEL INC ↗
  • Who funds FAMILY SERVICES INC ↗
  • Who funds HEARTS AND HOMES FOR YOUTH INC ↗

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.

Greater Washington Co…Bender Foundation IncThe Gary and Pennie A…Clark-Winchcole Found…The Morris and Gwendo…Wolpoff Family Founda…Ronald & Joy Paul Fam…Healthcare Initiative…Adventist Healthcare …The Phase FoundationWilliam S Abell Found…Clark Charitable Foun…
Greater Washington Community FoundationDC16.6× affinity6 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

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

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 Walter & Sarah Diener Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Walter & Sarah Diener Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 40%0%1%3%5%funder's share of their income ↑0%8%15%22%30%share of the org’s income from government →median 10%
  • 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
no gov moneyreceives it· size = income
4get no government money at all
9report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–30%
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 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.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 41 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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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