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The Nigro Family Foundation at a glance

· Private foundation

The Nigro Family Foundation

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.

$30k
Granted FY2025still arriving
9
Grants FY2025still arriving
5
States reached
$10k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0189% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Education$52kAnimals$34kHealth$9kPhilanthropy$7kRecreation & Sports$7kCommunity Improvement$2kEnvironment$1kReligion$1kOther$0
02FY2025 · 9 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k8 grants · $20k
  • $10k–50k1 grant · $10k
$1,800
Median grant
5
States reached
$438k
Total assets
Largest grants
RecipientAmount
UNIVERSITY OF VIRGINIA ATHLETICS$10,000
CHARLESTON ANIMAL SOCIETY$9,000
UNIVERSITY OF VIRGINIA$2,500
MUSC FOUNDATION$2,500
Individual grant recipient$1,800
DUKE UNIVERSITY HOSPITAL$1,500
COASTAL COMMUNITY FOUNDATION$1,500
REPSITE CARE$750
OUR CAUSE FOR PAWS$250
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 (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 its grants land in higher-need ZIPs.

area typical 9%RESPITE CARE OF CHARLESTON: $1k → 12%RESPITE CARE OF CHARLESTON: $1k → 12%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.

Which US states its grants reach

NY
MA
IA
CA
VA
MD
NC
SC
GA
FL
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.

80%of every dollar goes to organizations it has funded before.
$113k · 12 repeat orgs$28k to everyone else

Grantees it renews have grown median revenue +73% since the first grant, against +12% for those funded once.

12 repeat relationships: 4 still active in FY2025, 8 since wound down; 4 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

12
14

Total granted

$113k
$15k

Median revenue growth · since first grant

+73%
+12%

Still filing today

42%
36%

New vs renewed · share of each year

In FY2025, 56% of grant dollars renewed an existing relationship; $13k went to new ones.

50%100%’17’18’19’20’21’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’23’24’25
HealthAnimalsEducationCommunity ImprovementHuman ServicesEnvironmentOther
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

  • CA
    CHARLESTON ANIMAL SOCIETY
    7× · 2017–2025 · $42k · revenue +87%
  • TC
    THE COLLEGIATE SCHOOL
    2× · 2017–2018 · $5k · revenue +28%
  • M
    METANOIA
    3× · 2017–2023 · $2k · revenue +73%

Funded once

  • VA
    VIRGINA ATHLETIC FOUNDATION
    one grant, 2017 · $5k
  • CO
    COLLEGE OF CHARLESTON WOMEN'S GOLF
    one grant, 2017 · $2k
  • MS
    MCINTIRE SCHOOL OF COMMERCE
    one grant, 2024 · $2k
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
Carolinas Center for Medical Excellence Found ation
Health
2
Bon Secours-St Francis Xavier Hospital Inc

Healing all people with compassion, faith, and excellence.

Health
3
Roper St Francis Physicians Network

Healing all people with compassion, faith and excellence.

Health
4
Medical Society of South Carolina

To improve the health of our community through clinical excellence.

Health
5
Clinical Biotechnology Research Institute at Rsfh

Healing all people with compassion, faith, and excellence.

Health
6
Gaston Memorial Hospital Inc

To provide compassionate, exceptional and highly reliable care.

Health
7
Coastal Carolinas Health Alliance

Facilitate networking among hospitals

Health
8
Unc Health Foundation Inc

At unc health foundation, we inspire philanthropic support for unc health and unc school of medicine that transforms healthcare and provides hope to the people of north carolina and communities around the world.

Education
9
Mcleod Physician Associates Ii

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…

Health
10
St Charles Hospital Foundation

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.

—
11
Prisma Health

Inspire health. serve with compassion. be the difference.

Health
12
Caromont Health

To provide compassionate, exceptional and highly reliable care.

Health
How this is measured
The grantee most central to the portfolio’s shape is Coastal Community Foundation of South Carolina Inc; 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.
04the grantee network

13 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. 13 of the 32 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)
3
Early backer (in before they grew)
13/13
Grantees still filing
10/13
Grew since first funded

Where the money sits, by cause and then by grantee

UNIVERSITY OF VIRGINIA: $24,500 · OtherUNIVERSITY OF VIRGINIAMUSC FOUNDATION: $23,250 · OtherMUSC FOUNDATIONUNIVERSITY OF VIRGINIA ATHLETICS: $10,000 · OtherUNIVERSITY OF VIRGINIA ATHLETICSVIRGINA ATHLETIC FOUNDATION: $5,000 · OtherVIRGINA ATHLETIC FOUNDATIONIndividual grant recipient: $3,800 · OtherCOASTAL COMMUNITY FOUNDATION: $3,500 · OtherMEMORIAL SLOAN KETTERING CANCER CTR: $3,000 · OtherCOLLEGE OF CHARLESTON: $3,000 · Other+12 more: $12,350 · Other+12 moreCHARLESTON ANIMAL SOCIETY: $42,400 · AnimalsCHARLESTON ANIMAL SOCIETY+1 more: $150 · AnimalsTHE COLLEGIATE SCHOOL: $4,500 · EducationDUKE UNIVERSITY: $1,500 · EducationCOASTAL COMMUNITY FOUNDATION OF SOUTH CAROLINA INC: $5,000 · PhilanthropyDana-Farber Cancer Institute Inc: $1,000 · HealthBARRIER ISLANDS FREE MEDICAL CLINIC: $1,000 · HealthRoper St Francis Foundation: $250 · Health+1 more: $50 · HealthMETANOIA: $2,250 · Community ImprovementRESPITE CARE OF CHARLESTON: $2,000 · Human ServicesThe Kiawah Island Natural Habitat Conservancy Inc: $1,000 · Environment
Other$88,400Animals$42,550Education$6,000Philanthropy$5,000Health$2,300Community Improvement$2,250Human Services$2,000Environment$1,000

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetCHARLESTON ANIMAL SOCIETY: $42,400 over 7y, 0.1% of budgetCOASTAL COMMUNITY FOUNDATION OF SOUTH CAROLINA INC: $5,000 over 3y, 0.0% of budgetTHE COLLEGIATE SCHOOL: $4,500 over 2y, 0.0% of budgetCOASTAL COMMUNITY FOUNDATION: $3,500 over 3y, 0.2% of budgetMETANOIA: $2,250 over 3y, 0.1% of budgetRESPITE CARE OF CHARLESTON: $2,000 over 2y, 0.4% of budgetDUKE UNIVERSITY: $1,500 over 1y, 0.0% of budgetDana-Farber Cancer Institute Inc: $1,000 over 2y, 0.0% of budgetBARRIER ISLANDS FREE MEDICAL CLINIC: $1,000 over 1y, 0.1% of budgetThe Kiawah Island Natural Habitat Conservancy Inc: $1,000 over 1y, 0.1% of budgetRoper St Francis Foundation: $250 over 1y, 0.0% of budgetLIFELINE ANIMAL PROJECT INC: $150 over 1y, 0.0% of budgetSHRINERS HOSPITALS FOR CHILDREN: $50 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 CHARLESTON ANIMAL SOCIETY ↗
  • Who funds COASTAL COMMUNITY FOUNDATION OF SOUTH CAROLINA INC ↗
  • Who funds THE COLLEGIATE SCHOOL ↗
  • Who funds COASTAL COMMUNITY FOUNDATION ↗
  • Who funds METANOIA ↗
  • Who funds RESPITE CARE OF CHARLESTON ↗
  • Who funds DUKE UNIVERSITY ↗
  • Who funds Dana-Farber Cancer Institute Inc ↗
  • Who funds BARRIER ISLANDS FREE MEDICAL CLINIC ↗
  • Who funds The Kiawah Island Natural Habitat Conservancy Inc ↗
  • Who funds Roper St Francis Foundation ↗
  • Who funds LIFELINE ANIMAL PROJECT INC ↗
  • Who funds SHRINERS HOSPITALS FOR CHILDREN ↗

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.

George R & Janet E De…Kelly Family Foundati…Henry & Sylvia Yaschi…Coastal Community Fou…Dominion Energy Chari…The US Charitable Gif…Raymond James Charita…The Bank of America C…Vanguard Charitable E…Morgan Stanley Global…National Philanthropi…Donor Advised Charita…
George R & Janet E Desko Charitable FoundationPA13.6× affinity4 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

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

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 The Nigro Family Foundation funds: left to right is the share of its income from government, bottom to top the share from The Nigro Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%0%1%3%5%funder's share of their income ↑0%5%10%15%20%share of the org’s income from government →median 7%
  • Dana-Farber Cancer Institute Inc: 7% of income from government
  • Shriners Hospitals for Children: 0% of income from government
no gov moneyreceives it· size = income
0get no government money at all
4report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–20%
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 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.

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 32 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

Play a game based on Nigro Family’s filings →

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