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The Mary Curtis Horowitz Foundation at a glance

· Private foundation

The Mary Curtis Horowitz 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.

$46k
Granted FY2025still arriving
29
Grants FY2025still arriving
8
States reached
$6k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2024 to 2025.

Education$29kEnvironment$8kFood & Nutrition$8kCivil Rights$7kReligion$6kAnimals$6kScience & Tech$3kPublic Safety & Disaster$3kOther$0
02FY2025 · 29 grants

Where the money goes

Grants by size, and the largest recipients.

$1,000
Median grant
8
States reached
$11k
Total assets
Largest grants
RecipientAmount
BUCKNELL UNIVERSITY$6,000
Individual grant recipient$5,000
LITERACY VOLUNTEERS OF SOMERSET COUNTY$4,500
NATIONAL GEOGRAPHIC SOCIETY$3,000
CONGREGATION KEHILAT SHALOM ADULT EDUCATION$3,000
TRENTON AREA SOUP KITCHEN$2,500
NATURE CONSERVANCY$2,000
BERGEN COUNTY COOP LIBRARY SYSTEM INC$2,000
WILDLIFE CONSERVATION SOCIETY$1,500
RENNSELAER POLYTECHNIC INSTITUTE SCHOOL OF ARCHITECTURE$1,500
SWARTHMORE COLLEGE$1,500
CHICAGO PUBLIC LIBRARY FOUNDATION$1,500
AMERICAN MUSEUM OF NATURAL HISTORY$1,000
DONORSCHOOSE$1,000
TRI-BORO FOOD PANTRY$1,000
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 (FY24–25, $8k) land where the poverty rate runs at 5%, 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%LITERACY VOLUNTEERS OF SOMERSET COUNTY: $5k → 5%LITERACY VOLUNTEERS OF SOMERSET COUNTY: $3k → 5%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

IL
MI
NY
MA
PA
NJ
MD
DC
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.

85%of every dollar goes to organizations it has funded before.
$62k · 23 repeat orgs$11k to everyone else

Grantees it renews have grown median revenue +3% since the first grant, against 0% for those funded once.

23 repeat relationships: 23 still active in FY2025, 0 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

23
8

Total granted

$62k
$6k

Median revenue growth · since first grant

+3%
0%

Still filing today

78%
100%

New vs renewed · share of each year

In FY2025, 90% of grant dollars renewed an existing relationship; $4k went to new ones.

50%100%’24’25
RenewedFirst-time

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

’24’25
EducationAnimalsEnvironmentFood & NutritionHuman ServicesHousing & ShelterOther
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

  • LV
    LITERACY VOLUNTEERS OF SOMERSET COUNTY
    2× · 2024–2025 · $8k · revenue +55%
  • BC
    BERGEN COUNTY COOPERATIVE LIBRARY SYSTEM COMPUTER CONSORTIUM INC
    2× · 2024–2025 · $4k · revenue +4%
  • TASK Inc Trenton Area Soup Kitchen Inc
    2× · 2024–2025 · $4k · revenue +56%

Funded once

  • TV
    TRI-BORO VOLUNTEER AMBULANCE CORPS INC
    one grant, 2024 · $3k · revenue 0%
  • CC
    CHICAGO COALITION TO END HOMELESSNESS
    one grant, 2024 · $750 · revenue +18%
  • REACH OUT AND READ INC
    one grant, 2024 · $500 · revenue -3%
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
Conservation International Foundation

Ci works to spotlight and secure the critical benefits that nature provides to humanity.

Environment
2
Denver Zoological Foundation

Inspiring communities to save wildlife for future generations.

Animals
3
The Wildlife Society

The wildlife society's mission is to inspire, empower, and enable wildlife professionals to sustain wildlife populations and habitats through science-based management and conservation.

Animals
4
Rainforest Trust

Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.

International
5
The Adler Planetarium

The adler planetarium ('adler') is a not-for-profit cultural institution whose mission is to connect people to the universe and each other under the sky we all share. it aspires to be the world's premier center for engaging in astronomy…

Arts & Culture
6
The Academy of Natural Sciences of Philadelphia

The mission is "to understand the natural world and inspire everyone to care for it." the academy implements its mission through understanding the diversity of life; developing and applying science to protect the environment; and informing…

Science & Tech
7
Ocean Conservancy

Ocean conservancy unites science, people, and policy to protect our ocean, today and for generations to come.

Environment
8
Project Drawdown

Project drawdown's mission is to drive meaningful climate action by advancing science-based solutions and strategies. project drawdown's work is focused on three pillars: science - advancing science-based climate solutions and strategies;…

Education
9
National Audubon Society Inc

We work towards a future where birds thrive across the americas because audubon is a powerful, diverse, and ever-growing force for conservation. (continued on schedule o).

Environment
10
Lowell Observatory

The mission of lowell observatory is to pursue the study of astronomy, especially the study of our solar system and its evolution; to conduct pure research in astronomical phenomena; and to maintain quality public education and outreach…

Science & Tech
11
Property and Environment Research Center

Perc is dedicated to advancing conservation through markets, incentives, property rights, and partnerships.

Public Benefit
12
New Jersey Audubon Society

The new jersey audubon society is a privately supported, not-for-profit, statewide membership organization. (see schedule o for details).

Environment
How this is measured
The grantee most central to the portfolio’s shape is National Park Foundation; the most unlike its peers is Tri-Boro Food Pantry. 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

31 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. 31 of the 37 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)
1
Early backer (in before they grew)
31/31
Grantees still filing
11/31
Grew since first funded

Where the money sits, by cause and then by grantee

Individual grant recipient: $6,500 · OtherIndividual grant recipientCONGREGATION KEHILAT SHALOM ADULT EDUCATION: $6,000 · OtherCONGREGATION KEHILAT SHALOM ADULT EDUCAT…THE NATURE CONSERVANCY: $3,000 · OtherTHE NATURE CONSERVANCYRENNSELAER POLYTECHNIC INSTITUTE SCHOOL OF ARCHITECTURE: $2,500 · OtherRENNSELAER POLYTECHNIC INSTITUTE SCHOOL …UNIVERSITY OF CHICAGO DIVINITY SCHOOL: $2,000 · OtherUNIVERSITY OF CHICAGO DIVINITY SCHOOLSARAH'S CIRCLE: $1,250 · OtherCENTRAL PARK CONSERVANCY INC: $1,000 · OtherAmerican Museum of Natural History: $1,000 · Other+7 more: $3,850 · Other+7 moreBucknell University: $7,000 · EducationBucknell UniversityBERGEN COUNTY COOPERATIVE LIBRARY SYSTEM COMPUTER CONSORTIUM INC: $3,500 · EducationBERGEN COUNTY COOPERATIVE LIB…NATIONAL GEOGRAPHIC SOCIETY: $3,300 · EducationNATIONAL GEOGRAPHIC SOCIETYSWARTHMORE COLLEGE: $2,500 · EducationSWARTHMORE COLLEGECHICAGO PUBLIC LIBRARY FOUNDATION: $1,500 · EducationCHICAGO PUBLIC LIBRARY FOUNDA…DONORSCHOOSEORG: $1,000 · Education+2 more: $1,000 · EducationLITERACY VOLUNTEERS OF SOMERSET COUNTY: $7,500 · Human ServicesLITERACY VOLU…CRADLES TO CRAYONS INC: $1,500 · Human ServicesCRADLES TO CR…TASK Inc Trenton Area Soup Kitchen Inc: $3,500 · Food & NutritionTASK Inc Tr…TRI-BORO FOOD PANTRY: $2,000 · Food & NutritionTRI-BORO FO…GREATER CHICAGO FOOD DEPOSITORY: $2,000 · Food & NutritionGREATER CHI…Wildlife Conservation Society: $2,500 · AnimalsWildlife …DING DARLING WILDLIFE SOCIETY INC: $1,500 · AnimalsDING DARL…LINCOLN PARK ZOOLOGICAL SOCIETY: $1,250 · AnimalsLINCOLN P…Defenders of Wildlife: $800 · AnimalsDefenders…Land Conservancy of West Michigan: $1,250 · EnvironmentWORLD WILDLIFE FUND INC: $1,000 · EnvironmentSOUTHWEST MICHIGAN LAND CONSERVENCY INC: $500 · EnvironmentFRIENDS OF HOPEWELL VALLEY OPEN SPACE: $300 · EnvironmentTRI-BORO VOLUNTEER AMBULANCE CORPS INC: $3,000 · Health
Other$27,100Education$19,800Human Services$9,000Food & Nutrition$7,500Animals$6,050Environment$3,050Health$3,000

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 budgetLITERACY VOLUNTEERS OF SOMERSET COUNTY: $7,500 over 2y, 1.0% of budgetBucknell University: $7,000 over 2y, 0.0% of budgetBERGEN COUNTY COOPERATIVE LIBRARY SYSTEM COMPUTER CONSORTIUM INC: $3,500 over 2y, 0.1% of budgetTASK Inc Trenton Area Soup Kitchen Inc: $3,500 over 2y, 0.0% of budgetNATIONAL GEOGRAPHIC SOCIETY: $3,300 over 2y, 0.0% of budgetTHE NATURE CONSERVANCY: $3,000 over 2y, 0.0% of budgetTRI-BORO VOLUNTEER AMBULANCE CORPS INC: $3,000 over 1y, 0.9% of budgetWildlife Conservation Society: $2,500 over 2y, 0.0% of budgetSWARTHMORE COLLEGE: $2,500 over 2y, 0.0% of budgetTRI-BORO FOOD PANTRY: $2,000 over 2y, 0.6% of budgetGREATER CHICAGO FOOD DEPOSITORY: $2,000 over 2y, 0.0% of budgetCRADLES TO CRAYONS INC: $1,500 over 2y, 0.0% of budgetDING DARLING WILDLIFE SOCIETY INC: $1,500 over 2y, 0.0% of budgetLINCOLN PARK ZOOLOGICAL SOCIETY: $1,250 over 2y, 0.0% of budgetLand Conservancy of West Michigan: $1,250 over 2y, 0.1% of budgetSARAH'S CIRCLE: $1,250 over 2y, 0.0% of budgetCENTRAL PARK CONSERVANCY INC: $1,000 over 2y, 0.0% of budgetAmerican Museum of Natural History: $1,000 over 1y, 0.0% of budgetWORLD WILDLIFE FUND INC: $1,000 over 2y, 0.0% of budgetDONORSCHOOSEORG: $1,000 over 1y, 0.0% of budgetDefenders of Wildlife: $800 over 2y, 0.0% of budgetTHE STUDENT CONSERVATION ASSOCIATION INC: $800 over 2y, 0.0% of budgetCHICAGO COALITION TO END HOMELESSNESS: $750 over 1y, 0.0% of budgetREACH OUT AND READ INC: $500 over 1y, 0.0% of budgetLINCOLN PARK CONSERVANCY: $500 over 1y, 0.1% of budgetNATIONAL PARK FOUNDATION: $500 over 1y, 0.0% of budgetSOUTHWEST MICHIGAN LAND CONSERVENCY INC: $500 over 1y, 0.0% of budgetFRIENDS OF HOPEWELL VALLEY OPEN SPACE: $300 over 1y, 0.0% of budgetHILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE: $300 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.

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 Bank of America C…Vanguard Charitable E…American Online Givin…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
The Bank of America Charitable Foundation IncNC9.1× affinity5 shared granteesties to 5 of 5Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

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

2024
’20’21’22’23’24’25
no gov · 20%0%1%3%5%funder's share of their income ↑0%23%45%68%90%share of the org’s income from government →median 2%
  • Reach Out and Read Inc: 9% of income from government
  • Cradles to Crayons Inc: 2% of income from government
  • Friends of Hopewell Valley Open Space: 0% of income from government
no gov moneyreceives it· size = income
2get no government money at all
8report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–90%
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.

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 37 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 Mary Curtis Horowitz’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