· Private foundation
Tillie and William Blumstein Family 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 FY2017–2025.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| The Light House | $1,500 |
| Temple Reyim | $1,000 |
| Chesapeake Bay Foundation | $1,000 |
| St Marys Parish and School | $1,000 |
| Doctors Without Borders USA | $1,000 |
| Jewish Family & Childrens Service of Greater Boston | $1,000 |
| New York Society for Ethical Culture | $750 |
| Eagles Autism Foundation | $750 |
| Icahn School of Medicine at Mount Sinai | $750 |
| Anne Arundel County Food Bank | $700 |
| Rutland Jewish Center | $504 |
| Commonwealth School | $500 |
| Cradles to Crayons | $500 |
| Clean Air Task Force | $500 |
| Brearley School | $500 |
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 (FY17–25, $11k) land where the poverty rate runs at 13%, against an area that typically sits at 10%. 68% 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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +29% since the first grant, against +26% for the ones you funded once.
45 repeat relationships — 20 still active in FY2025, 25 since wound down; 2 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, 91% of grant dollars renewed an existing relationship; $1k 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
MEDECINS SANS FRONTIERES USA INC9× · 2017–2025 · $6k · revenue +98%
PLANNED PARENTHOOD FEDERATION OF AMERICA INC8× · 2017–2025 · $4k · revenue +12%- AAANNE ARUNDEL COUNTY FOOD BANK INC4× · 2022–2025 · $3k · revenue +16%
Funded once
- RCRotary Clubone grant, 2024 · $2k
- LHLight House Shelterone grant, 2024 · $1k
- MHMARSHALL HOPE CORPORATIONgraduatedone grant, 2023 · $1k · revenue +29%
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.
Advance science, engineering, and innovation throughout the world for the benefit of all. the world's largest multidisciplinary scientific society and a leading publisher of cutting-edge research through its science family of journals,…
The fsmb serves as the voice for state medical boards, supporting them through education, assessment, research and advocacy while providing services and initiatives that promote patient safety, quality health care and regulatory best…
American gas association's (the association) mission is to develop and advocate for informed, innovative, and durable policy that fulfills our nation's energy needs, environmental aspirations and economic potential. we are committed to…
At the internet society foundation, we focus on funding initiatives that strengthen the internet in function and reach so that it can effectively serve all people. our work advances the vision of the internet society (isoc): the internet…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
American foreign service association (afsa) is both the principal advocate for the long-term institutional wellbeing of the professional career foreign service and responsible for safeguarding the interest of afsa members. (continued on…
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
The Academy's mission is to enhance member career fulfillment and promote brain health for all.
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
The purpose of the water research foundation (wrf) is a definitive research organization to advance the science of all things water to better meet the evolving needs of its subscribers and the water sector. to engage exclusively in…
Empowering financial professionals and consumers through world-class advocacy and education.
Ahip is the national trade association representing the health insurance industry. ahip's members provide health care coverage, services and solutions to more than 200 million americans. we are committed to market-based solutions and…
For reference, the grantee most central to the portfolio’s shape is Jewish Family and Children's Service Inc and the most unlike its peers is The Foundation for Aids Research. 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 36 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% 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 13% 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.
54 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. 54 of the 76 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 MEDECINS SANS FRONTIERES USA INC ↗
- Who funds THE LIGHT HOUSE INC ↗
- Who funds PLANNED PARENTHOOD FEDERATION OF AMERICA INC ↗
- Who funds CHESAPEAKE BAY FOUNDATION INC ↗
- Who funds ANNE ARUNDEL COUNTY FOOD BANK INC ↗
- Who funds JEWISH FAMILY & CHILDREN'S SERVICE INC ↗
- Who funds ALZHEIMER'S FOUNDATION OF AMERICA INC ↗
- Who funds SMILE TRAIN INC ↗
- Who funds THE COMMONWEALTH SCHOOL INC ↗
- Who funds EAGLES AUTISM CHALLENGE INC ↗
- Who funds DIRECT RELIEF ↗
- Who funds COMMUNITY SERVICE SOCIETY OF NEW YORK ↗
- Who funds ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI ↗
- Who funds THE BREARLEY SCHOOL ↗
- Who funds CRADLES TO CRAYONS INC ↗
- Who funds Ocean Blue Project Inc ↗
- Who funds THE FOUNDATION FOR AIDS RESEARCH ↗
- Who funds The New York Public Library Astor Lenox and Tilden Foundations ↗
- Who funds Teach for America Inc ↗
- Who funds Americans for the Arts Inc ↗
- Who funds YAD CHESSED FUND INC ↗
- Who funds MOUNT SINAI HEALTH SYSTEM INC ↗
- Who funds CLEAN AIR TASK FORCE INC ↗
- Who funds FRIENDS WITHOUT A BORDER ↗
- Who funds SPA CREEK CONSERVANCY INC ↗
- Who funds CITY PARKS FOUNDATION INC ↗
- Who funds THE CHILDREN'S AID SOCIETY ↗
- Who funds CITY HARVEST INC ↗
- Who funds Rehabilitation Center for Children and Adults Inc ↗
- Who funds Museum of Modern Art ↗
- Who funds METROPOLITAN MUSEUM OF ART ↗
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: Jpmorgan Chase Foundation · Jewish Communal Fund · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Morgan Stanley Global Impact Funding Trust Inc · Arundel Community Development Services Inc · Community Foundation of Anne Arundel Co · William J and Dorothy K O'Neill Foundation Inc · The Jm Kaplan Fund Inc · Combined Jewish Philanthropies of Greater Boston Inc · Renaissance Charitable Foundation Inc · The Pfizer Foundation Inc · Vanguard Charitable Endowment Program
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 Tillie and William Blumstein Family 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.
- Cradles to Crayons Inc — 2% of income from government
- Chesapeake Bay Foundation Inc — 2% of income from government
- Annapolis Maritime Museum Inc — 2% of income from government
- Jewish Family & Children's Service Inc — 1% of income from government
- Palm Beach County Food Bank 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.
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How do I get to Tillie and William Blumstein Family Foundation Inc?
Find your warmest path to Tillie and William Blumstein Family 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.