· Private foundation
Iqbal G Mamdani and Shelby M Mamdani Foundation Inc
Its FY2024 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 FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k35 grants · $94k
- $10k–50k4 grants · $60k
| Recipient | Amount |
|---|---|
| WGCU - PLEDGE DRIVE | $20,000 |
| PLANNED PARENTHOOD | $20,000 |
| WSHU | $10,000 |
| HARRY CHAPIN FOOD BANK | $10,000 |
| THE GLOBAL GIRLS ALLIANCE | $5,000 |
| CROSSROADS COMMUNITY SERVICES | $5,000 |
| PFCU SCHOLARSHIP AWARDS PROGRAM | $5,000 |
| SHELTER ISLAND PRESERVATION & IMPORVEMENT SOCIETY | $5,000 |
| OUR AIM FOUNDATION | $5,000 |
| QUALITY LIFE CENTER | $5,000 |
| INTERFAITH ALLICANCE | $5,000 |
| THE CARTER CENTER | $5,000 |
| Individual grant recipient | $5,000 |
| DIGNITY MATTERS | $2,500 |
| THE FOOD BANK | $2,500 |
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 (FY17–24, $49k) land where the poverty rate runs at 12%, against an area that typically sits at 10%. 65% 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.
63 repeat relationships — 34 still active in FY2024, 29 since wound down; 5 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, 91% of grant dollars renewed an existing relationship; $14k 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
HARRY CHAPIN FOOD BANK OF SOUTHWEST FLORIDA INC7× · 2017–2024 · $60k · revenue +140%- SMSYLVESTER MANOR EDUCATIONAL FARM INC6× · 2017–2023 · $41k · revenue +114%
- NCNAPLES COUNCIL ON WORLD AFFAIRS INC7× · 2017–2024 · $33k · revenue +25%
Funded once
- AACLUone grant, 2017 · $10k
- SHSHRINERS HOSPITALone grant, 2018 · $5k
- TCTHE CHILDRENS SCHOLARSHIP FUNDone grant, 2020 · $5k · revenue +15%
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.
To save lives & relieve suffering through health interventions & related activities that strengthen communities affected by conflict, natural disasters & disease outbreaks.
Actionaid is an international network building a just, equitable, and sustainable world in solidarity with communities on the frontlines of poverty and injustice. actionaid usa is the u.s. branch of actionaid international, which works in…
Crisis group works to prevent and resolve deadly conflict around the world by informing and influencing the perceptions and actions of policymakers and other key conflict actors. to this end, we endeavour to talk to all sides and provide…
Pathfinder expands access to sexual and reproductive health services, opening the door to opportunities for women and all individuals to thrive-economically, educationally, and civically. driven by our country-led leadership and local…
(see schedule o)
See schedule oto serve the public by:- assuring the qualifications of health care professionals- providing primary-source verification of credentials of health careprofessionals, as they serve throughout the world- supporting international…
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.
To provide accurate, objective information and analysis on international strategic issues for legislators, diplomats, foreign affairs analysts, international business leaders, economists, the military, defense commentators, journalists,…
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…
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.
To provide multi-specialty surgical care, humanitarian aid and educational support to people in low- and middle-income countries.
The organization's mission is to build partnerships to enhance compassionate care globally. we are dedicated to improving access to hospice and palliative care worldwide.
For reference, the grantee most central to the portfolio’s shape is Nch Healthcare System Inc and the most unlike its peers is Islamic Center of Naples. 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) — 2% of your grantees by number, and just 1% 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.
53 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. 53 of the 97 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 HARRY CHAPIN FOOD BANK OF SOUTHWEST FLORIDA INC ↗
- Who funds AUBURN THEOLOGICAL SEMINARY ↗
- Who funds SYLVESTER MANOR EDUCATIONAL FARM INC ↗
- Who funds NAPLES COUNCIL ON WORLD AFFAIRS INC ↗
- Who funds CITYMEALS-ON-WHEELS ↗
- Who funds Feeding America ↗
- Who funds THE CARTER CENTER INC ↗
- Who funds International Rescue Committee INC ↗
- Who funds OUR AIM FOUNDATION INC ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds SOUTHERN POVERTY LAW CENTER INC ↗
- Who funds Dignity Matters Inc ↗
- Who funds WNET ↗
- Who funds GULFSHORE PLAYHOUSE INC ↗
- Who funds CENTER FOR HUMAN DEVELOPMENT INC ↗
- Who funds ROBIN HOOD FOUNDATION ↗
- Who funds SHELTER ISLAND HISTORY MUSEUM ↗
- Who funds SHELTER ISLAND AMBULANCE FOUNDATION ↗
- Who funds J STREET EDUCATION FUND INC ↗
- Who funds CROSSROADS COMMUNITY SERVICES 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: The New York Community Trust · Peoples United Community Foundation · Collier Community Foundation Inc · The Robert Wood Johnson Foundation · The Rockefeller Foundation · Jpmorgan Chase Foundation · WK Kellogg Foundation · The Ford Foundation · The Goldman Sachs Charitable Gift Fund · The Chicago Community Trust · Verizon Foundation · 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 Iqbal G Mamdani and Shelby M Mamdani 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.
- Education Development Center Inc — 65% of income from government
- Save the Children Federation Inc — 30% of income from government
- Center for Human Development Inc — 26% of income from government
- Tech Foundry Inc — 6% of income from government
- Gulfshore Playhouse Inc — 0% of income from government
- Friends of Rookery Bay Inc — 0% of income from government
- National Indian Child Welfare Association — 0% of income from government
- Partners in Health a Nonprofit Corporation — 0% of income from government
- Guadalupe Center 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 Iqbal G Mamdani and Shelby M Mamdani Foundation Inc?
Find your warmest path to Iqbal G Mamdani and Shelby M Mamdani 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.