· Private foundation
Harold and Nancy Zirkin Foundation
Its FY2024 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k2 grants · $10k
- $10k–50k4 grants · $102k
| Recipient | Amount |
|---|---|
| BRAVO VAIL | $45,000 |
| SIBLEY MEMORIAL HOSPITAL FOUNDATION | $30,000 |
| MEDSTAR | $16,500 |
| SHARE OUR STRENGTH | $10,000 |
| WASHINGTON HEBREW CONGREGATION | $5,380 |
| CAPITAL JEWISH MUSEUM | $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 (FY19–19, $3k) land where the poverty rate runs at 14%, 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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +41% since the first grant, against +21% for the ones you funded once.
19 repeat relationships — 4 still active in FY2024, 15 since wound down; 2 grantees were first funded in FY2024 (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 FY2024, 58% of grant dollars renewed an existing relationship; $47k 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
SHARE OUR STRENGTH3× · 2017–2024 · $80k · revenue +60%- RRROUNDUP RIVER RANCH4× · 2017–2023 · $74k · revenue +73%
- UUSAGAINSTALZHEIMER'S5× · 2018–2023 · $52k · revenue +40%
Funded once
- BABOYS AND GIRLS CLUBS OF GREATER WASHINGTON AND AFFILIATEgraduatedone grant, 2017 · $25k · revenue +128%
- WHWASHINGTON HOSPITAL CENTER CORPORATIONone grant, 2021 · $20k · revenue +20%
- SMSIBLEY MEMORIAL HOSPITALone grant, 2017 · $20k
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 children's hospital of philadelphia, the oldest hospital in the united states dedicated exclusively to pediatrics, strives to be the world leader in the advancement of health care for children by integrating excellent patient care,…
Provider of pediatric healthcare, education, research & community service
Children's research institute dba children's national research institute conducts and promotes translational and clinical medical research and education programs that lead to improved understanding, prevention, treatment, and care of…
The mission of the george washington university (gw) is to educate individuals in liberal arts, languages, sciences, learned professions, and other courses and subjects of study, and to conduct scholarly research and publish the findings…
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…
Meridian international center is a nonpartisan diplomacy institution founded in 1960 to advance american leadership. headquartered on a historic campus in washington dc, our mission is to empower leaders to advance the next era of…
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…
Plan, develop, coordinate, direct and manage an integrated healthcare system.
Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.
Today, with the formal approval of congress, the society continues exploring and instituting new and creative ways to bring the fascinating story of the capitol, its institutions and america's unique history to people across the nation and…
To inform and enrich the intellectual lives of 20,000 alumni of harvard university in the washington, dc area and to assist harvard university with respect to applicants and undergraduates from the dc area.
We extend god's care through the ministry of physical, mental and spiritual healing.
For reference, the grantee most central to the portfolio’s shape is Children's Hospital and the most unlike its peers is All Our Kids Inc. 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 38 years old; the field is 18. You back the established end — and your money leans older still.
The field is 20% 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 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 35 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 SHARE OUR STRENGTH ↗
- Who funds ROUNDUP RIVER RANCH ↗
- Who funds USAGAINSTALZHEIMER'S ↗
- Who funds JOHN F KENNEDY CENTER FOR THE PERFORMING ARTS ↗
- Who funds MARTHA'S TABLE INC ↗
- Who funds SIBLEY MEMORIAL HOSPITAL FOUNDATION ↗
- Who funds BOYS AND GIRLS CLUBS OF GREATER WASHINGTON AND AFFILIATE ↗
- Who funds CHILDREN'S HOSPITAL ↗
- Who funds WASHINGTON HOSPITAL CENTER CORPORATION ↗
- Who funds THE DC CENTRAL KITCHEN INC ↗
- Who funds J STREET ↗
- Who funds ALL OUR KIDS INC ↗
- Who funds Lillian and Albert Small Capital Jewish Museum ↗
- Who funds CHILDREN'S NATIONAL ↗
- Who funds The United States Holocaust Memorial Museum ↗
- Who funds THE PHILLIPS COLLECTION ↗
- Who funds THE LEADERSHIP CONFERENCE ON CIVIL AND HUMAN RIGHTS INC ↗
- Who funds FIRST DESCENTS ↗
- Who funds American Heart Association Inc ↗
- Who funds GEORGETOWN DAY SCHOOL ↗
- Who funds Iona Senior Services ↗
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: Posner-Wallace Foundation · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving 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 organization Harold and Nancy Zirkin 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 or a single department — and drag the year to watch it move.
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 Harold and Nancy Zirkin Foundation?
Find your warmest path to Harold and Nancy Zirkin 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.