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· Private foundation

Louis and Sandra Grotta 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.

$29k
Granted FY2025still arriving
18
Grants FY2025still arriving
4
States reached
$14k
Largest
01What it funds
0197% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2025.

Arts & Culture$265kPhilanthropy$99kYouth Development$19kEducation$18kHealth$11kEnvironment$9kHousing & Shelter$5kPublic Safety & Disaster$3kOther$0
02FY2025 · 18 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k17 grants · $15k
  • $10k–50k1 grant · $14k
$1,000
Median grant
4
States reached
$243k
Total assets
Largest grants
RecipientAmount
JEWISH FEDERATION$14,000
HARDING LAND TRUST$3,000
MUSEUM OF ARTS & DESIGN$2,500
KEMMERER LIBRARY$1,500
LONGHOUSE RESERVE$1,000
FOUNDATION FOR MORRISTOWN MEDICAL CENTER$1,000
THE CENTER FOR ART IN WOOD$1,000
AMERICAN CRAFT COUNCIL$1,000
TOSHIKO TAKAEZU FOUNDATION$1,000
TEMPLE B'NAI JESHURUN$1,000
NAKAHIMA FOUNDATION$500
MRCC FOUNDATION INC$500
GREEN VILLAGE FIRE DEPT$500
TUNNEL TO TOWERS$500
NEW VERNON FIRE DEPT$100
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 (FY19–19, $150) land where the poverty rate runs at 4%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 10%THE SEEING EYE: $150 → 4%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

MN
WI
MI
NY
PA
NJ
CA
NE
VA
NM
TN
DC
TX
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.

95%of every dollar goes to organizations it has funded before.
$407k · 22 repeat orgs$23k to everyone else

22 repeat relationships: 14 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

22
25

Total granted

$407k
$21k

Median revenue growth · since first grant

+28%
+32%

Still filing today

50%
48%

New vs renewed · share of each year

In FY2025, 93% of grant dollars renewed an existing relationship; $2k went to new ones.

50%100%’19’20’21’22’23’24’25
RenewedFirst-time

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

’19’20’21’22’23’24’25
Arts & CultureEnvironmentEducationHealthHuman ServicesInternationalOther
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

  • LR
    LONGHOUSE RESERVE
    6× · 2020–2025 · $14k · revenue +5%
  • FF
    Foundation for Morristown Medical Center
    7× · 2019–2025 · $10k · revenue +45%
  • HL
    HARDING LAND TRUST
    7× · 2019–2025 · $8k · revenue +62%

Funded once

  • AJ
    Art Jewelry Forumgraduated
    one grant, 2020 · $10k · revenue +50%
  • L
    LONGHOUSE
    one grant, 2019 · $5k
  • TM
    THE MORRIS MUSEUM INC
    one grant, 2019 · $1k · revenue -19%
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
The Jewish Museum

The mission of the jewish museum is to collect, preserve, exhibit and interpret art and jewish culture. see schedule o for more information.

Arts & Culture
2
The Pierpont Morgan Library

The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.

Education
3
New Museum of Contemporary Art

A center for exhibitions, information, and documentation about living artists since 1977, which continues to be a place of experimentation and a hub of new art and new ideas.

Arts & Culture
4
Kadist Collection Manager Inc
Arts & Culture
5
The Brooklyn Institute of Arts and Sciences

The mission of the brooklyn institute of arts and sciences, d/b/a brooklyn museum (the "museum") is to bring people together through art and experiences that inspire celebration, compassion, courage, and the will to act. (see schedule o).

Arts & Culture
6
Staten Island Institute of Arts and Sciences dba the Staten Island Museum

Founded in 1881 the Staten Island Museum engages visitors with interdisciplinary exhibitions, public programs, and educational activities for all ages. It is the mission of the Staten Island Museum to spark curiosity and generate…

Arts & Culture
7
National Academy of Design

The mission of the national academy of design is to promote the fine arts in america through exhibition and education.

Education
8
The Frick Collection

The Frick Collection (the "Collection") operates an internationally recognized art museum and library program for the inspiration and enjoyment of the public and for the advancement of the study of fine arts and kindred subjects.

—
9
The American Federation of Arts Inc

The american federation of arts initiates and organizes a national and international program of art exhibitions, publications, and educational activities to benefit the museum community and enrich the public's experience and understanding…

Arts & Culture
10
New York Botanical Garden

The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…

Environment
11
Asian Art Museum Foundation of San Francisco

The asian art museum celebrates, preserves, and promotes asian and asian american art and cultures for local and global audiences. we provide a dynamic forum for exchanging ideas, inviting collaboration, and fueling imagination to deepen…

Arts & Culture
12
San Francisco Museum of Modern Art

See schedule osfmoma believes the art of our time is vital and shares it with passion and purpose, and that art and the creative process can open minds and help build a better world. for that reason, we assemble unparalleled collections,…

Arts & Culture
How this is measured
The grantee most central to the portfolio’s shape is The Morris Museum Inc; the most unlike its peers is Green Village Fire Department. 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

25 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. 25 of the 52 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)
5
Early backer (in before they grew)
24/25
Grantees still filing
20/25
Grew since first funded

Where the money sits, by cause and then by grantee

UNIVERSITY OF MICHIGAN MUSEUM FUND: $200,150 · OtherUNIVERSITY OF MICHIGAN MUSEUM FUNDJEWISH FEDERATION: $98,500 · OtherJEWISH FEDERATIONTHIRTEEN: $18,500 · Other+28 more: $34,344 · Other+28 moreMUSEUM OF ARTS AND DESIGN: $23,700 · Arts & CultureMUSEUM OF A…Art Jewelry Forum: $10,000 · Arts & CultureArt Jewelry…THE ISAMU NOGUCHI FOUNDATION AND GARDEN MUSEUM: $2,500 · Arts & CultureTHE ISAMU N…AMERICAN CRAFT COUNCIL: $2,100 · Arts & CultureTOSHIKO TAKAEZU FOUNDATION INC: $2,000 · Arts & Culture+5 more: $1,950 · Arts & CultureLONGHOUSE RESERVE: $13,500 · EducationMRCC FOUNDATION INC: $2,000 · EducationSTEPHEN SILLER TUNNEL TO TOWERS FOUNDATION: $1,000 · EducationFoundation for Morristown Medical Center: $10,000 · Health+1 more: $200 · HealthHARDING LAND TRUST: $8,100 · EnvironmentNEW JERSEY HIGHLANDS COALITION: $1,000 · Environment+2 more: $200 · EnvironmentAMERICAN JEWISH CONGRESS INC: $500 · InternationalTHE SEEING EYE INC: $150 · Human Services
Other$351,494Arts & Culture$42,250Education$16,500Health$10,200Environment$9,300International$500Human Services$150

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 budgetMUSEUM OF ARTS AND DESIGN: $23,700 over 7y, 0.0% of budgetLONGHOUSE RESERVE: $13,500 over 6y, 0.2% of budgetFoundation for Morristown Medical Center: $10,000 over 7y, 0.0% of budgetArt Jewelry Forum: $10,000 over 1y, 3.1% of budgetHARDING LAND TRUST: $8,100 over 7y, 0.6% of budgetThe Center for Art in Wood Inc: $5,000 over 5y, 0.1% of budgetTHE ISAMU NOGUCHI FOUNDATION AND GARDEN MUSEUM: $2,500 over 2y, 0.0% of budgetAMERICAN CRAFT COUNCIL: $2,100 over 3y, 0.0% of budgetMRCC FOUNDATION INC: $2,000 over 4y, 0.3% of budgetTOSHIKO TAKAEZU FOUNDATION INC: $2,000 over 2y, 1.1% of budgetGreen Village Fire Department: $1,950 over 7y, 0.1% of budgetSTEPHEN SILLER TUNNEL TO TOWERS FOUNDATION: $1,000 over 2y, 0.0% of budgetTHE MORRIS MUSEUM INC: $1,000 over 1y, 0.0% of budgetNEW JERSEY HIGHLANDS COALITION: $1,000 over 1y, 0.2% of budgetAMERICAN JEWISH CONGRESS INC: $500 over 1y, 0.3% of budgetTHE VALERIE FUND: $500 over 1y, 0.0% of budgetAmerican Museum of Natural History: $500 over 1y, 0.0% of budgetST JUDE CHILDREN'S RESEARCH HOSPITAL INC: $200 over 1y, 0.0% of budgetMuseum of Modern Art: $200 over 1y, 0.0% of budgetCFILE FOUNDATION co GARTH R CLARK: $150 over 1y, 0.2% of budgetTHE SEEING EYE INC: $150 over 1y, 0.0% of budgetTHE NATURE CONSERVANCY: $100 over 1y, 0.0% of budgetTHE INTERNATIONAL MUSEUM OF DINNERWARE DESIGN INC: $100 over 1y, 0.2% of budgetNATIONAL AUDUBON SOCIETY INC: $100 over 1y, 0.0% of budgetNATIONAL ARBOR DAY FOUNDATION: $100 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 MUSEUM OF ARTS AND DESIGN ↗
  • Who funds LONGHOUSE RESERVE ↗
  • Who funds Foundation for Morristown Medical Center ↗
  • Who funds Art Jewelry Forum ↗
  • Who funds HARDING LAND TRUST ↗
  • Who funds The Center for Art in Wood Inc ↗
  • Who funds THE ISAMU NOGUCHI FOUNDATION AND GARDEN MUSEUM ↗
  • Who funds AMERICAN CRAFT COUNCIL ↗
  • Who funds MRCC FOUNDATION INC ↗
  • Who funds TOSHIKO TAKAEZU FOUNDATION INC ↗
  • Who funds Green Village Fire Department ↗
  • Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
  • Who funds THE MORRIS MUSEUM INC ↗
  • Who funds NEW JERSEY HIGHLANDS COALITION ↗
  • Who funds AMERICAN JEWISH CONGRESS INC ↗
  • Who funds THE VALERIE FUND ↗
  • Who funds American Museum of Natural History ↗
  • Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
  • Who funds Museum of Modern Art ↗
  • Who funds CFILE FOUNDATION co GARTH R CLARK ↗
  • Who funds THE SEEING EYE INC ↗

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.

The Kronthal Family Foundation IncNJ13.6× affinity4 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Kronthal Family Foundation Inc · Fm Kirby Foundation Inc · The Lazard Charitable Foundation · Community Foundation of New Jersey · Jewish Communal Fund · National Philanthropic Trust · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · Paypal Charitable Giving Fund · The Bank of America Charitable Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund

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 Louis and Sandra Grotta Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Louis and Sandra Grotta Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 60%0%1%3%5%funder's share of their income ↑0%15%30%45%60%share of the org’s income from government →median 7%
  • The Morris Museum Inc: 7% of income from government
no gov moneyreceives it· size = income
6get 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 · 0–60%
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 Louis and Sandra Grotta Foundation Inc?

Find your warmest path to Louis and Sandra Grotta 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.

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 52 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

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