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Mariposa Foundation Inc at a glance

· Private foundation

Mariposa 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.

$5.2M
Granted FY2024still arriving
41
Grants FY2024still arriving
5
States reached
$600k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0197% classified

What it funded, over time

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

Environment$8.7MArts & Culture$6.2MEducation$5.0MCivil Rights$3.6MHealth$3.5MPhilanthropy$2.5MFood & Nutrition$2.4MCrime & Legal$2.2MOther$0
02FY2024 · 41 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k1 grant · $5k
  • $10k–50k5 grants · $55k
  • $50k–250k29 grants · $2.8M
  • $250k+6 grants · $2.4M
$100,000
Median grant
5
States reached
$77M
Total assets
Largest grants
RecipientAmount
AMERICAN MUSEUM NATURAL HISTORY$600,000
AMERICAN CIVIL LIBERTIES UNION$500,000
PROPUBLICA$500,000
INTERNATIONAL RESCUE COMMITTEE$250,000
NATURAL RESOURCES DEFENSE COUN$250,000
NEO PHILANTHROPHY$250,000
NEW YORK PRESBYTERIAN HOSPITAL$200,000
PLANNED PARENTHOOD FEDERATION$200,000
FOOD BANK FOR NEW YORK CITY$150,000
HOPEWELL FUND$150,000
EVERYTOWN FOR GUN SAFETY$150,000
OCEAN CONSERVANCY$130,000
SD FOUNDATION$100,000
REPRODUCTIVE FREEDOM FOR ALL FOUNDATION$100,000
MAKE THE ROAD NEW YORK$100,000
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 (FY17–24, $1.0M) land where the poverty rate runs at 19%, against an area that typically sits at 11%. 95% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%BED STUY CAMPAIGN AGANIST HUNGER: $10k → 20%AMERICAN NATIONAL RED CROSS: $50k → 10%THE CAMPAIGN AGAINST HUNGER: $10k → 20%THE RIVER FUND: $10k → 13%GREEN CITY FORCE: $75k → 20%GREEN CITY FORCE: $75k → 20%GREEN CITY FORCE: $75k → 20%GREEN CITY FORCE: $75k → 20%GREEN CITY FORCE: $75k → 20%GREEN CITY FORCE: $75k → 20%GREEN CITY FORCE: $50k → 20%GREEN CITY FORCE: $50k → 20%RED HOOK INITIATIVE: $75k → 20%RED HOOK INITIATIVE: $50k → 20%RED HOOK INITIATIVE: $50k → 20%RED HOOK INITIATIVE: $50k → 20%RED HOOK INITIATIVE: $50k → 20%RED HOOK INITIATIVE: $50k → 20%RED HOOK INITIATIVE: $50k → 20%RED HOOK INITIATIVE: $40k → 20%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

WA
NY
OR
NJ
CT
RI
CA
UT
CO
NC
DC
LA
AL
TX
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.

96%of every dollar goes to organizations it has funded before.
$38M · 61 repeat orgs$1.6M to everyone else

Grantees it renews have grown median revenue +47% since the first grant, against +41% for those funded once.

61 repeat relationships: 35 still active in FY2024, 26 since wound down; 3 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

61
38

Total granted

$38M
$1.5M

Median revenue growth · since first grant

+47%
+41%

Still filing today

77%
61%

New vs renewed · share of each year

In FY2024, 98% of grant dollars renewed an existing relationship; $115k went to new ones.

50%100%’17’18’19’20’21’22’23’24
RenewedFirst-time

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

’17’18’19’20’21’22’23’24
Arts & CultureEducationHealthCommunity ImprovementCrime & LegalInternationalOther
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

  • NATURAL RESOURCES DEFENSE COUNCIL INC
    8× · 2017–2024 · $6.0M · revenue +41%
  • PRO PUBLICA INC
    8× · 2017–2024 · $1.9M · revenue +48%
  • ENVIRONMENTAL DEFENSE FUND INCORPORATED
    5× · 2019–2024 · $1.8M · revenue +139%

Funded once

  • SARAH LAWRENCE COLLEGE
    one grant, 2017 · $500k · revenue +14%
  • EG
    ECHOING GREEN INCgraduated
    one grant, 2017 · $100k · revenue +107%
  • HH
    HERMITAGE HEART INC
    one grant, 2017 · $75k
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
City Report Inc

CITY REPORT, INC. serves the people of New York through independent journalism that answers their information needs and holds the powerful to account.

Arts & Culture
2
Open Markets Institute

The open markets institute works to help people relearn how to use competition policy to build stronger democracies, more just and equitable societies, more innovative and sustainable economies, and a more secure and peaceful world.

Education
3
University of New Haven

The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…

Education
4
Friends of the Earth

Friends of the earth strives for a more healthy and just world by defendng the environment and human health while advancing social and economic justice by conducting research and education, transforming the economy so it protects the…

Environment
5
Cdp North America Inc

Cdp north america, inc. 's ("cdp-na") vision for the future is a thriving economy that works for people and planet in the long term. we focus investors and companies on taking urgent action to build a truly sustainable economy by measuring…

Environment
6
The Union of Concerned Scientists Inc

The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.

International
7
The Roosevelt Institute

To create a nation where everyone enjoys a fair share of our collective prosperity.

Education
8
The Architectural League of New York

The architectural league of new york supports critically transformative work in the allied fields that shape the built environment. as a vital, independent forum, the league stimulates thinking, debate, and action on today's (continued on…

—
9
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
10
The Climate Group Inc

Climate group advances climate action by mobilizing business and government leadership to drive systemic decarbonization across energy, transport, and industry, while engaging the public through large-scale convenings and global platforms.…

Environment
11
Npr Foundation

The npr foundation ("foundation") is organized and operated exclusively for the benefit of its sole supported organization, national public radio, inc. ("npr inc."). the foundation supports npr inc. through various activities such as…

—
12
Manhattanville University

To educate students to be ethical and socially responsible leaders in a global community.

Education
How this is measured
The grantee most central to the portfolio’s shape is The Queens Library Foundation Inc; the most unlike its peers is Wildlife Conservation Society. 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

80 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. 80 of the 109 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)
9
Early backer (in before they grew)
80/80
Grantees still filing
61/80
Grew since first funded

Where the money sits, by cause and then by grantee

NATURAL RESOURCES DEFENSE COUNCIL INC: $5,950,000 · EnvironmentNATURAL RESOURCES DEFENS…ENVIRONMENTAL DEFENSE FUND INCORPORATED: $1,750,000 · EnvironmentENVIRONMENTAL DEFENSE FU…OCEAN CONSERVANCY: $830,000 · EnvironmentOCEAN CONSERVANCY+2 more: $270,000 · EnvironmentREAD TO LEAD INC: $2,025,000 · OtherREAD TO LEAD INCNEW YORK PRESBYTERIAN HOSPITAL: $1,650,000 · OtherNEW YORK PRESBYTERIAN HOSPITALAMERICAN CIVIL LIBERTIES UNION: $1,400,000 · OtherAMERICAN CIVIL LIBERTIES UNIONUS FUNDS FOR UNICEF: $600,000 · OtherPLANNED PARENTHOOD FEDERATION OF AMERICA INC: $1,600,000 · OtherPLANNED PARENTHOOD FEDERATION OF AMERICA INCMEDECINS SANS FRONTIERES USA INC: $625,000 · OtherWildlife Conservation Society: $1,035,000 · OtherWildlife Conservation SocietyCITY HARVEST INC: $860,000 · OtherAMERICAN CIVIL LIBERTIES UNION FOUNDATION INC: $1,000,000 · OtherAMERICAN CIVIL LIBERTIES UNION FOUNDATION INC+58 more: $5,864,168 · Other+58 moreAmerican Museum of Natural History: $3,077,000 · Arts & CultureAmerican Museum …PRO PUBLICA INC: $1,850,000 · Arts & CulturePRO PUBLICA INCTHE CORPORATION OF YADDO: $667,000 · Arts & CultureTHE CORPORATION …+10 more: $270,000 · Arts & CultureEVERYTOWN FOR GUN SAFETY SUPPORT FUND INC: $1,110,000 · Crime & LegalMake the Road New York: $925,000 · Crime & LegalBRADY CENTER TO PREVENT GUN VIOLENCE: $650,000 · Crime & LegalSAFE PASSAGE PROJECT CORPORATION: $275,000 · Crime & Legal+1 more: $50,000 · Crime & LegalPURPOSE FOUNDATION: $535,000 · EducationSARAH LAWRENCE COLLEGE: $500,000 · EducationWILLIAM J BRENNAN CENTER FOR JUSTICE INC: $375,000 · EducationRIVERDALE COUNTRY SCHOOL INC: $375,000 · EducationCenter for Educational Innovation Inc: $200,000 · EducationBROOKLYN PUBLIC LIBRARY: $190,000 · EducationTHE GILDER LEHRMAN INSTITUTE OF AMERICAN HISTORY: $140,000 · EducationThe New York Public Library Astor Lenox and Tilden Foundations: $120,000 · EducationECHOING GREEN INC: $100,000 · Education+1 more: $25,000 · EducationNEO Philanthropy Inc: $1,750,000 · Public BenefitCENTER FOR POPULAR DEMOCRACY INC: $400,000 · Public Benefit+1 more: $25,000 · Public BenefitFOOD BANK FOR NEW YORK CITY: $1,285,000 · Community ImprovementBROWN UNIVERSITY: $290,000 · Community ImprovementASCENDUS INC: $200,000 · Community ImprovementHISPANIC FEDERATION INC: $125,000 · Community Improvement+2 more: $65,000 · Community Improvement
Environment$8,800,000Other$16,659,168Arts & Culture$5,864,000Crime & Legal$3,010,000Education$2,560,000Public Benefit$2,175,000Community Improvement$1,965,000

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 budgetNATURAL RESOURCES DEFENSE COUNCIL INC: $5,950,000 over 8y, 0.5% of budgetAmerican Museum of Natural History: $3,077,000 over 7y, 0.4% of budgetREAD TO LEAD INC: $2,025,000 over 5y, 12% of budgetPRO PUBLICA INC: $1,850,000 over 8y, 0.8% of budgetENVIRONMENTAL DEFENSE FUND INCORPORATED: $1,750,000 over 5y, 0.3% of budgetNEO Philanthropy Inc: $1,750,000 over 6y, 0.4% of budgetPLANNED PARENTHOOD FEDERATION OF AMERICA INC: $1,600,000 over 8y, 0.1% of budgetFOOD BANK FOR NEW YORK CITY: $1,285,000 over 8y, 0.4% of budgetEVERYTOWN FOR GUN SAFETY SUPPORT FUND INC: $1,110,000 over 8y, 0.5% of budgetWildlife Conservation Society: $1,035,000 over 7y, 0.1% of budgetAMERICAN CIVIL LIBERTIES UNION FOUNDATION INC: $1,000,000 over 4y, 0.2% of budgetMake the Road New York: $925,000 over 8y, 0.5% of budgetCITY HARVEST INC: $860,000 over 8y, 0.1% of budgetOCEAN CONSERVANCY: $830,000 over 8y, 0.4% of budgetTHE CORPORATION OF YADDO: $667,000 over 3y, 6.7% of budgetBRADY CENTER TO PREVENT GUN VIOLENCE: $650,000 over 6y, 1.3% of budgetMEDECINS SANS FRONTIERES USA INC: $625,000 over 8y, 0.0% of budgetInternational Rescue Committee INC: $550,000 over 3y, 0.0% of budgetGREEN CITY FORCE INC: $550,000 over 8y, 2.1% of budgetPURPOSE FOUNDATION: $535,000 over 2y, 3.9% of budgetSARAH LAWRENCE COLLEGE: $500,000 over 1y, 0.4% of budgetRED HOOK INITIATIVE: $415,000 over 8y, 1.8% of budgetCENTER FOR POPULAR DEMOCRACY INC: $400,000 over 7y, 0.3% of budgetWILLIAM J BRENNAN CENTER FOR JUSTICE INC: $375,000 over 8y, 0.2% of budgetRIVERDALE COUNTRY SCHOOL INC: $375,000 over 6y, 0.2% of budgetTHE ALLEN-STEVENSON SCHOOL: $335,000 over 2y, 0.6% of budgetBROWN UNIVERSITY: $290,000 over 7y, 0.0% of budgetBROOKLYN COMMUNITY FOUNDATION: $275,000 over 8y, 1.8% of budgetSAFE PASSAGE PROJECT CORPORATION: $275,000 over 4y, 1.7% of budgetNEW VENTURE FUND: $200,000 over 4y, 0.0% of budgetCenter for Educational Innovation Inc: $200,000 over 2y, 1.2% of budgetSD Foundation: $200,000 over 2y, 1.3% of budgetASCENDUS INC: $200,000 over 4y, 0.7% of budgetREPRODUCTIVE FREEDOM FOR ALL FOUNDATION: $200,000 over 2y, 0.7% of budgetTHE QUEENS LIBRARY FOUNDATION INC: $190,000 over 4y, 2.7% of budgetBROOKLYN PUBLIC LIBRARY: $190,000 over 4y, 0.1% of budgetHOPEWELL FUND: $150,000 over 1y, 0.1% of budgetTHE GILDER LEHRMAN INSTITUTE OF AMERICAN HISTORY: $140,000 over 7y, 0.3% of budgetTHE FORTUNE SOCIETY INC: $140,000 over 5y, 0.1% of budgetPATH: $125,000 over 2y, 0.0% of budgetHISPANIC FEDERATION INC: $125,000 over 2y, 0.3% of budgetThe New York Public Library Astor Lenox and Tilden Foundations: $120,000 over 3y, 0.0% of budgetECHOING GREEN INC: $100,000 over 1y, 1.6% of budgetWORLD CENTRAL KITCHEN INC: $100,000 over 2y, 0.0% of budgetCenter for Humane Technology: $100,000 over 1y, 2.8% of budgetSUPERHUMANS UKRAINE INC: $100,000 over 2y, 0.8% of budgetMuseum of Modern Art: $95,000 over 4y, 0.0% of budgetSUNRISE MOVEMENT EDUCATION FUND: $70,000 over 2y, 0.2% 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 NATURAL RESOURCES DEFENSE COUNCIL INC ↗
  • Who funds American Museum of Natural History ↗
  • Who funds READ TO LEAD INC ↗
  • Who funds PRO PUBLICA INC ↗
  • Who funds ENVIRONMENTAL DEFENSE FUND INCORPORATED ↗
  • Who funds NEO Philanthropy Inc ↗
  • Who funds PLANNED PARENTHOOD FEDERATION OF AMERICA INC ↗
  • Who funds FOOD BANK FOR NEW YORK CITY ↗
  • Who funds EVERYTOWN FOR GUN SAFETY SUPPORT FUND INC ↗
  • Who funds Wildlife Conservation Society ↗
  • Who funds AMERICAN CIVIL LIBERTIES UNION FOUNDATION INC ↗
  • Who funds Make the Road New York ↗
  • Who funds CITY HARVEST INC ↗
  • Who funds OCEAN CONSERVANCY ↗
  • Who funds THE CORPORATION OF YADDO ↗
  • Who funds BRADY CENTER TO PREVENT GUN VIOLENCE ↗
  • Who funds MEDECINS SANS FRONTIERES USA INC ↗
  • Who funds International Rescue Committee INC ↗
  • Who funds GREEN CITY FORCE INC ↗
  • Who funds PURPOSE FOUNDATION ↗
  • Who funds SARAH LAWRENCE COLLEGE ↗
  • Who funds RED HOOK INITIATIVE ↗
  • Who funds CENTER FOR POPULAR DEMOCRACY INC ↗
  • Who funds WILLIAM J BRENNAN CENTER FOR JUSTICE INC ↗
  • Who funds RIVERDALE COUNTRY SCHOOL INC ↗
  • Who funds THE ALLEN-STEVENSON SCHOOL ↗
  • Who funds BROWN UNIVERSITY ↗
  • Who funds BROOKLYN COMMUNITY FOUNDATION ↗
  • Who funds SAFE PASSAGE PROJECT CORPORATION ↗
  • Who funds NEW VENTURE FUND ↗
  • Who funds Center for Educational Innovation Inc ↗
  • Who funds SD Foundation ↗
  • Who funds ASCENDUS INC ↗
  • Who funds REPRODUCTIVE FREEDOM FOR ALL FOUNDATION ↗

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.

Jewish Communal FundThe New York Communit…The Goldman Sachs Cha…The Howard Gilman Fou…Select Equity Group F…Robin Hood FoundationMother Cabrini Health…Silicon Valley Commun…The Vidda FoundationBooth Ferris Foundati…Pinkerton FoundationThe Jm Kaplan Fund Inc
Jewish Communal FundNY21.9× affinity12 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Jewish Communal Fund · The New York Community Trust · The Goldman Sachs Charitable Gift Fund · The Howard Gilman Foundation Inc · Select Equity Group Foundation · Robin Hood Foundation · Mother Cabrini Health Foundation Inc · Silicon Valley Community Foundation · The Vidda Foundation · Booth Ferris Foundation Xxxxx4008 · Pinkerton Foundation · The Jm Kaplan Fund 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 Mariposa Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Mariposa Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%1%4%8%15%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 0%
  • Silver Hill Hospital Inc: 0% of income from government
no gov moneyreceives it· size = income
1get no government money at all
21report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
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 Mariposa Foundation Inc?

Find your warmest path to Mariposa 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 109 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 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on Mariposa’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