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· Private foundation

The Long Stems 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.

$127k
Granted FY2024still arriving
29
Grants FY2024still arriving
5
States reached
$15k
Largest
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2024.

Arts & Culture$120kEducation$109kHealth$63kHuman Services$63kEnvironment$62kYouth Development$30kReligion$20kPublic Benefit$17kOther$0
02FY2024 · 29 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k22 grants · $47k
  • $10k–50k7 grants · $80k
$2,250
Median grant
5
States reached
$2.5M
Total assets
Largest grants
RecipientAmount
PENNY'S FLIGHT FOUNDATION INC$15,000
WNET CHANNEL 13$15,000
INDIAN MOUNTAIN SCHOOL$10,000
LEADERSHIP NEW HAMPSHIRE$10,000
UNTERMYER GARDEN CONSERVANCY$10,000
STEAMSHIP HISTORICAL SOCIETY OF AME$10,000
GIRL RISING$10,000
THE TAFT SCHOOL$9,000
FISHERS ISLAND COMMUNITY CENTER$4,000
THE UNION CHAPEL$3,650
DENISON PEQUOTSEPOS NATURE CENTER$2,500
YALE UNIVERSITY$2,500
THE GARDEN CONSERVANCY$2,500
MOUNTS BOTANICAL GARDEN$2,500
HERONFIELD ACADEMY$2,250
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 (FY19–24, $57k) land where the poverty rate runs at 7%, against an area that typically sits at 9%. 14% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 9%FISHERS ISLAND COMMUNITY CENTER: $15k → 7%THE TRYALL FUND: $4k → 11%FISHERS ISLAND COMMUNITY CENTER: $15k → 7%THE TRYALL FUND: $4k → 11%FISHERS ISLAND COMMUNITY CENTER: $13k → 7%FISHERS ISLAND COMMUNITY CENTER: $4k → 7%FISHERS ISLAND COMMUNITY CENTER: $3k → 7%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

NH
NY
MA
CT
RI
CA
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.

90%of every dollar goes to organizations it has funded before.
$448k · 35 repeat orgs$52k to everyone else

Grantees it renews have grown median revenue +45% since the first grant, against +25% for those funded once.

35 repeat relationships: 22 still active in FY2024, 13 since wound down; 7 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

35
14

Total granted

$448k
$25k

Median revenue growth · since first grant

+45%
+25%

Still filing today

74%
71%

New vs renewed · share of each year

In FY2024, 79% of grant dollars renewed an existing relationship; $27k went to new ones.

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

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

’19’20’21’22’24
Arts & CultureEducationHealthEnvironmentRecreation & SportsHuman ServicesOther
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

  • WNET
    5× · 2019–2024 · $68k · revenue +0%
  • IM
    INDIAN MOUNTAIN SCHOOL INC
    5× · 2019–2024 · $60k · revenue +83%
  • FI
    FISHERS ISLAND COMMUNITY CENTER INC
    5× · 2019–2024 · $49k · revenue +83%

Funded once

  • LC
    LINCOLN CENTER THEATHER
    one grant, 2020 · $6k
  • HF
    HOSPITAL FOR SPECIAL SURGERY FOUNDATION
    one grant, 2019 · $4k
  • SU
    SS United States Conservancy
    one grant, 2019 · $3k · revenue -10%
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
Governors Island Corporation

The governors island corporation, doing business as the trust for governors island, is the 501(c)(3) not-for-profit organization created by the city of new york and charged with the planning, redevelopment and ongoing operations of 150…

Animals
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
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
4
Montauk Historical Society

The purpose of the montauk historical society is to collect, restore, preserve and display historically significant buildings, objects and writings and to preserve and share the history and cultures of montauk and the east end for this and…

Arts & Culture
5
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
6
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
7
Peace Islands Institute New York Inc
Religion
8
Rhode Island School of Design

The mission of rhode island school of design, through its college and museum,is to educate its students and the public in the creation and (see schedule o)appreciation of works of art and design, to discover and transmit knowledge and to…

Education
9
Museum of Modern Art

The Museum of Modern Art is a private, non-profit institution chartered by the State of New York Department of Education in 1929 to foster public awareness of modern and contemporary art. (Continued in Schedule O)

Arts & Culture
10
The Feinstein Institutes for Medical Research

The feinstein institute for medical research ("the institute") is the research branch of northwell health ("northwell"). through its affiliation with northwell, the institute's mission is to bridge the gap between biomedical research and…

Health
11
The Parrish Art Museum Inc

The museum encourages an appreciation of modern and contemporary art through exhibitions, education, and public programs for diverse audiences.inspired by the natural setting and historical artistic community of long island's east end, the…

Arts & Culture
12
The Trustees of the New York Society Library

The new york society library was founded in 1754 by the new york society, a civic-minded group formed in the belief that the availability of books would help the city of new york to prosper.

—
How this is measured
The grantee most central to the portfolio’s shape is Fishers Island Community Center Inc; the most unlike its peers is Seventh Regiment Armory Conservancy 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

39 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. 39 of the 57 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)
39/39
Grantees still filing
31/39
Grew since first funded

Where the money sits, by cause and then by grantee

UNTERMYER GARDENS SOCIETY: $22,500 · OtherUNTERMYER GARDENS SOCIETYNY LANDMARKS CONSERVANCY INC: $21,000 · OtherNY LANDMARKS CONSERVANCY INCSTEAMSHIP HISTORICAL SOCIETY OF AME: $10,000 · OtherSTEAMSHIP HISTORICAL SOCIETY O…The Frick Collection: $8,000 · OtherThe Frick CollectionST JOHN'S CHURCH LARCHMONT: $7,000 · OtherYALE UNIVERSITY: $6,500 · OtherTHE UNION CHAPEL: $6,200 · OtherLINCOLN CENTER THEATHER: $6,000 · OtherTHE GARDEN CONSERVANCY INC: $7,000 · OtherUNTERMYER GARDENS CONSERVANCY INC: $10,000 · OtherUNTERMYER GARDENS CONSERVANCY …+18 more: $31,950 · Other+18 moreINDIAN MOUNTAIN SCHOOL INC: $60,000 · EducationINDIAN MOUNTAIN SCHOOL …HERONFIELD ACADEMY: $12,750 · EducationHERONFIELD ACADEMYTHE TAFT SCHOOL CORPORATION: $12,000 · EducationTHE TAFT SCHOOL CORPORA…MAMARONECK SCHOOLS FOUNDATION INC: $6,000 · EducationMAMARONECK SCHOOLS FOUN…CLIPPER FOUNDATION: $5,000 · EducationCHANCES FOR CHILDREN - NY INC: $4,000 · Education+3 more: $5,750 · Education+3 moreWNET: $68,000 · Arts & CultureWNETSTEAMSHIP HISTORICAL SOCIETY OF AMERICA: $15,400 · Arts & CultureSTEAMSHIP HISTORICAL …THE LIGHTHOUSE WORKS INC: $4,750 · Arts & Culture+7 more: $8,574 · Arts & Culture+7 morePennys Flight Foundation Inc: $30,000 · HealthPennys Flight…ISLAND HEALTH PROJECT INC: $11,000 · HealthISLAND HEALTH…Westchester Medical Center Foundation: $8,500 · HealthWestchester M…LAWRENCE MEMORIAL HOSPITAL INC: $7,000 · HealthLAWRENCE MEMO…ALZHEIMER'S DISEASE RESEARCH FOUNDATION: $2,000 · Health+1 more: $500 · HealthFISHERS ISLAND COMMUNITY CENTER INC: $49,480 · Human ServicesFISHERS ISLA…Tryall Fund Jamaica: $8,000 · Human ServicesTryall Fund …Girl Rising: $30,000 · InternationalLEADERSHIP NEW HAMPSHIRE: $16,850 · Public Benefit
Other$136,150Education$105,500Arts & Culture$96,724Health$59,000Human Services$57,480International$30,000Public Benefit$16,850

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 budgetWNET: $68,000 over 5y, 0.0% of budgetINDIAN MOUNTAIN SCHOOL INC: $60,000 over 5y, 0.2% of budgetFISHERS ISLAND COMMUNITY CENTER INC: $49,480 over 5y, 2.4% of budgetGirl Rising: $30,000 over 4y, 0.5% of budgetPennys Flight Foundation Inc: $30,000 over 2y, 2.3% of budgetLEADERSHIP NEW HAMPSHIRE: $16,850 over 3y, 3.1% of budgetSTEAMSHIP HISTORICAL SOCIETY OF AMERICA: $15,400 over 3y, 0.9% of budgetHERONFIELD ACADEMY: $12,750 over 4y, 0.2% of budgetTHE TAFT SCHOOL CORPORATION: $12,000 over 2y, 0.0% of budgetISLAND HEALTH PROJECT INC: $11,000 over 5y, 0.3% of budgetUNTERMYER GARDENS CONSERVANCY INC: $10,000 over 1y, 0.4% of budgetWestchester Medical Center Foundation: $8,500 over 4y, 0.0% of budgetTryall Fund Jamaica: $8,000 over 2y, 0.9% of budgetThe Frick Collection: $8,000 over 4y, 0.0% of budgetTHE GARDEN CONSERVANCY INC: $7,000 over 4y, 0.0% of budgetLAWRENCE MEMORIAL HOSPITAL INC: $7,000 over 5y, 0.0% of budgetMAMARONECK SCHOOLS FOUNDATION INC: $6,000 over 2y, 1.2% of budgetCLIPPER FOUNDATION: $5,000 over 3y, 5.5% of budgetTHE LIGHTHOUSE WORKS INC: $4,750 over 3y, 0.2% of budgetCHANCES FOR CHILDREN - NY INC: $4,000 over 3y, 0.2% of budgetGROTON SCHOOL: $3,500 over 2y, 0.0% of budgetFISHERS ISLAND FIRE DEPARTMENT: $3,000 over 5y, 0.5% of budgetSS United States Conservancy: $2,600 over 1y, 0.4% of budgetWAVE HILL INCORPORATED: $2,500 over 2y, 0.0% of budgetDENISON PEQUOTSEPOS NATURE CENTER: $2,500 over 1y, 0.2% of budgetSustainable Harvest International: $2,000 over 1y, 0.2% of budgetALZHEIMER'S DISEASE RESEARCH FOUNDATION: $2,000 over 1y, 0.0% of budgetHenry L Ferguson Museum: $2,000 over 5y, 0.1% of budgetFISHERS ISLAND RECREATIONAL PATH FOUNDATION: $1,500 over 1y, 0.2% of budgetMYSTIC SEAPORT MUSEUM INC: $1,500 over 1y, 0.0% of budgetISLAND PEOPLES PROJECT: $1,500 over 3y, 0.8% of budgetFISHERS ISLAND LIBRARY ASSOCIATION: $1,250 over 4y, 0.2% of budgetTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $1,000 over 1y, 0.0% of budgetSEVENTH REGIMENT ARMORY CONSERVANCY INC: $1,000 over 1y, 0.0% of budgetCENTRAL PARK CONSERVANCY INC: $750 over 1y, 0.0% of budgetCHILDREN'S TUMOR FOUNDATION: $500 over 1y, 0.0% of budgetThe Playwrights Realm: $500 over 1y, 0.0% of budgetTHE ROYAL OAK FOUNDATION INC: $500 over 2y, 0.0% of budgetMETROPOLITAN MUSEUM OF ART: $474 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 WNET ↗
  • Who funds INDIAN MOUNTAIN SCHOOL INC ↗
  • Who funds FISHERS ISLAND COMMUNITY CENTER INC ↗
  • Who funds Girl Rising ↗
  • Who funds Pennys Flight Foundation Inc ↗
  • Who funds LEADERSHIP NEW HAMPSHIRE ↗
  • Who funds STEAMSHIP HISTORICAL SOCIETY OF AMERICA ↗
  • Who funds HERONFIELD ACADEMY ↗
  • Who funds THE TAFT SCHOOL CORPORATION ↗
  • Who funds ISLAND HEALTH PROJECT INC ↗
  • Who funds UNTERMYER GARDENS CONSERVANCY INC ↗
  • Who funds Westchester Medical Center Foundation ↗
  • Who funds Tryall Fund Jamaica ↗
  • Who funds The Frick Collection ↗
  • Who funds THE GARDEN CONSERVANCY INC ↗
  • Who funds LAWRENCE MEMORIAL HOSPITAL INC ↗
  • Who funds MAMARONECK SCHOOLS FOUNDATION INC ↗
  • Who funds CLIPPER FOUNDATION ↗
  • Who funds THE LIGHTHOUSE WORKS INC ↗
  • Who funds CHANCES FOR CHILDREN - NY INC ↗
  • Who funds GROTON SCHOOL ↗
  • Who funds FISHERS ISLAND FIRE DEPARTMENT ↗
  • Who funds SS United States Conservancy ↗
  • Who funds WAVE HILL INCORPORATED ↗
  • Who funds DENISON PEQUOTSEPOS NATURE CENTER ↗
  • Who funds Sustainable Harvest International ↗
  • Who funds ALZHEIMER'S DISEASE RESEARCH FOUNDATION ↗
  • Who funds Henry L Ferguson Museum ↗

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 Willinphila FoundationNY26.3× affinity10 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Willinphila Foundation · The McCance Foundation · The Fairfield Foundation · Fleetwood Foundation · W L Lyons Brown Jr Charitable Foundation · The New York Community Trust · Jeanann Gray Dunlap Foundation · Trippe Fund Inc · The Duke of Omnium Fund · The Frederic C Hamilton Family Foundation · The Spofford Foundation Inc · The Emily Hall Tremaine Foundation 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 Long Stems Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from The Long Stems Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 50%1%3%6%10%funder's share of their income ↑0%5%10%15%20%share of the org’s income from government →median 0%
  • Mystic Seaport Museum Inc: 5% of income from government
  • Denison Pequotsepos Nature Center: 0% of income from government
  • Lawrence Memorial Hospital Inc: 0% of income from government
no gov moneyreceives it· size = income
5get no government money at all
6report 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.

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 57 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

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