· Private foundation
The Nigro Family Foundation
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 $10k8 grants · $12k
- $10k–50k1 grant · $10k
| Recipient | Amount |
|---|---|
| UNIVERSITY OF VIRGINIA | $10,000 |
| CHARLESTON ANIMAL SOCIETY | $6,000 |
| MUSC FOUNDATION | $1,650 |
| MCINTIRE SCHOOL OF COMMERCE | $1,500 |
| COASTAL COMMUNITY FOUNDATION | $1,000 |
| Individual grant recipient | $1,000 |
| ALZHEIMER'S ASSOCIATION | $1,000 |
| LIFELINE ANIMAL PROJECT | $150 |
| NORTH IOWA CULTURAL CENTER | $100 |
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 (FY17–18, $2k) land where the poverty rate runs at 12%, against an area that typically sits at 9%. 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.
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 +73% since the first grant, against +20% for the ones you funded once.
12 repeat relationships — 4 still active in FY2024, 8 since wound down; 4 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, 87% of grant dollars renewed an existing relationship; $3k 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
- CACHARLESTON ANIMAL SOCIETY6× · 2017–2024 · $33k · revenue +87%
- TCTHE COLLEGIATE SCHOOL2× · 2017–2018 · $5k · revenue +28%
- MMETANOIA3× · 2017–2023 · $2k · revenue +73%
Funded once
- VAVIRGINA ATHLETIC FOUNDATIONone grant, 2017 · $5k
- COCOLLEGE OF CHARLESTON WOMEN'S GOLFone grant, 2017 · $2k
- TKThe Kiawah Island Natural Habitat Conservancy Incone grant, 2017 · $1k · revenue +20%
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.
Healing all people with compassion, faith, and excellence.
Healing all people with compassion, faith, and excellence.
Healing all people with compassion, faith and excellence.
Healing all people with compassion, faith, and excellence.
Healing all people with compassion, faith, and excellence.
Healing all people with compassion, faith, and excellence.
Facilitate networking among hospitals
Mcleod physician associates ii operates as a part of the mcleod health system. the mission of mcleod health is to improve the overall health and well being of people living within south carolina and eastern north carolina by providing…
Calverthealth medical center provides quality inpatient and ambulatory health care to the people of southern maryland that is accessible, cost-effective and compassionate. chmc works in partnership with the community to improve the health…
To improve the health of our community through clinical excellence.
We, at ch, humbly join together to bring christ's healing mission and the mission of mercy of the catholic church expressed in catholic health care to our communities.
For reference, the grantee most central to the portfolio’s shape is Coastal Community Foundation of South Carolina Inc and the most unlike its peers is Dana-Farber Cancer Institute Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
12 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. 12 of the 28 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 CHARLESTON ANIMAL SOCIETY ↗
- Who funds COASTAL COMMUNITY FOUNDATION OF SOUTH CAROLINA INC ↗
- Who funds THE COLLEGIATE SCHOOL ↗
- Who funds METANOIA ↗
- Who funds COASTAL COMMUNITY FOUNDATION ↗
- Who funds RESPITE CARE OF CHARLESTON ↗
- Who funds The Kiawah Island Natural Habitat Conservancy Inc ↗
- Who funds BARRIER ISLANDS FREE MEDICAL CLINIC ↗
- Who funds Dana-Farber Cancer Institute Inc ↗
- Who funds Roper St Francis Foundation ↗
- Who funds LIFELINE ANIMAL PROJECT INC ↗
- Who funds SHRINERS HOSPITALS FOR CHILDREN ↗
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: George R & Janet E Desko Charitable Foundation · Kelly Family Foundation · Henry & Sylvia Yaschik Foundation Inc · Coastal Community Foundation of South Carolina Inc · Dominion Energy Charitable Foundation · The US Charitable Gift Trust · Raymond James Charitable Endowment Fund · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · Donor Advised Charitable Giving Inc
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 The Nigro Family 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.
- Dana-Farber Cancer Institute Inc — 7% of income from government
- Shriners Hospitals for Children — 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 The Nigro Family Foundation?
Find your warmest path to The Nigro Family 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.