Skip to content
Sl Green Family Foundation at a glance

· Private foundation

Sl Green 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.

$25k
Granted FY2024still arriving
1
Grants FY2024still arriving
1
States reached
$25k
Largest
01What it fundsRead
02The needRead
03Its fieldRead
04Through PlinthRead
01What it funds
01100% classified

What it funded, over time

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

Youth Development$65kEducation$65kRecreation & Sports$25kHealth$24kArts & Culture$15kPhilanthropy$5k
02FY2024 · 1 grant

Where the money goes

Grants by size, and the largest recipients.

$25,000
Median grant
1
States reached
$128k
Total assets
Largest grants
RecipientAmount
The Williston Northampton School$25,000
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:

Dollar for dollar, its grants (FY17–24) land where the poverty rate runs at 15%, against an area that typically sits at 8%. 92% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 8%The Williston Northampton School: $25k → 12%THE PERKIOMEN SCHOOL: $10k → 7%STATEN ISLAND MUSEUM: $5k → 11%BIG BROTHERS BIG SISTERS OF NYC: $10k → 17%NORTHERN PIEDMONT COMMUNITY FOUNDATION: $5k → 6%The Hartsbrook School: $30k → 12%BIG BROTHERS BIG SISTERS: $5k → 17%STREET SQUASH: $25k → 17%STREET SQUASH: $25k → 17%STREETSQUASH: $25k → 17%WEILL CORNELL MEDICAL COLLEGE: $15k → 17%NEW YORK PRESBYSTERIAN FUND INC: $5k → 17%INTREPID MUSEUM FOUNDATION: $10k → 17%NATIONAL JEWISH HEALTH: $1k → 17%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.
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 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
Pembroke Hill School

A preschool through 12th grade, private, college preparatory school. the school's mission statement is "together, cultivating the best in each for the benefit of all."

Education
2
Miss Porter's School Inc

Miss porter's school educates young women to become informed, bold, resourceful and ethical global citizens. we expect our graduates to shape a changing world.

Education
3
The New School of Northern Virginia Inc

The school has been formed for charitable and educational purposes to develop curriculum for the use in training and educating students in the traditional academic disciplines and skills essential for success in college and the…

Education
4
Northfield Mount Hermon School

Northfield mount hermon educates the head, heart and hands of our students. we engage their intellect, compassion, and talents, empowering them to act with humanity and purpose.

Education
5
Studentsponsor Partners Inc

Student/sponsor partners harnesses the power of quality education and mentorship to help low-income and academically average new york city youth escape the cycle of poverty and reach their highest potential.

Education
6
The Cambridge School of Weston Inc

The cambridge school of weston's mission is to provide a progressive education that emphasizes deep learning and meaningful relationships. our dynamic program inspires students to discover who they are and what their contribution is to…

Education
7
Stony Brook Internists University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
8
Regents of the Mercersburg College

At mercersburg academy we embrace the values of hard work, character, and community while learning to balance independence with interdependence and individual humility with collective pride. our students commit to a life of learning, seek…

Education
9
The Northwest School of the Arts Humanities and Environment

We offer an outstanding international college preparatory program for grades 6-12.

Education
10
The Benjamin Private School Inc

The mission of the benjamin school is to provide a challenging college preparatory education to a diverse student body in a structured, nurturing community environment. the school motivates students to master the skills of learning,…

Education
11
Public Prep Charter School Academies

Our mission is simple: we aim to guide children to realize their inherent greatness. from a very young age, we reinforce to our scholars that they are agents of change. we guide scholars to embody the values of scholarship, excellence,…

Education
12
The Trustees of Princeton University

Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…

Education
How this is measured
The grantee most central to the portfolio’s shape is Big Brothers Big Sisters of New York City Inc; the most unlike its peers is BWell Today for Tomorrow. 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

8 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. 8 of the 13 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)
0
Early backer (in before they grew)
7/8
Grantees still filing
3/8
Grew since first funded

Where the money sits, by cause and then by grantee

STREETSQUASH INC: $75,000 · Recreation & SportsSTREETSQUASH INCThe Hartsbrook School: $30,000 · OtherThe Hartsbrook SchoolWEILL CORNELL MEDICAL COLLEGE: $15,000 · OtherWEILL CORNELL MEDICAL COLLEGEBIG BROTHERS BIG SISTERS OF NEW YORK CITY INC: $10,000 · OtherBIG BROTHERS BIG SISTERS OF NEW YORK …STATEN ISLAND MUSEUM: $5,000 · OtherSTATEN ISLAND MUSEUMBIG BROTHERS BIG SISTERS: $5,000 · OtherBIG BROTHERS BIG SISTERS+1 more: $1,000 · OtherTHE WILLISTON NORTHAMPTON SCHOOL: $25,000 · EducationTHE WILLISTON NORTH…PERKIOMEN SCHOOL: $10,000 · EducationPERKIOMEN SCHOOLINTREPID MUSEUM FOUNDATION INC: $10,000 · Arts & CultureNEW YORK-PRESBYTERIAN FUND INC: $5,000 · HealthBWell Today for Tomorrow: $2,500 · HealthNORTHERN PIEDMONT COMMUNITY FOUNDATION: $5,000 · Philanthropy
Recreation & Sports$75,000Other$66,000Education$35,000Arts & Culture$10,000Health$7,500Philanthropy$5,000

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

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetSTREETSQUASH INC: $75,000 over 3y, 1.1% of budgetTHE WILLISTON NORTHAMPTON SCHOOL: $25,000 over 1y, 0.1% of budgetINTREPID MUSEUM FOUNDATION INC: $10,000 over 1y, 0.0% of budgetPERKIOMEN SCHOOL: $10,000 over 1y, 0.1% of budgetBIG BROTHERS BIG SISTERS OF NEW YORK CITY INC: $10,000 over 1y, 0.1% of budgetNORTHERN PIEDMONT COMMUNITY FOUNDATION: $5,000 over 1y, 0.1% of budgetNEW YORK-PRESBYTERIAN FUND INC: $5,000 over 1y, 0.0% of budgetBWell Today for Tomorrow: $2,500 over 1y, 4.1% 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 Pfizer Foundation…Fidelity Investments …Amazonsmile Foundation
The Pfizer Foundation IncNY11.5× affinity4 shared granteesties to 2 of 2Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Pfizer Foundation 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 Sl Green Family Foundation funds: left to right is the share of its income from government, bottom to top the share from Sl Green Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%0%1%3%5%funder's share of their income ↑0%1%3%4%5%share of the org’s income from government →
    no gov moneyreceives it· size = income
    1get no government money at all
    2report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–5%
    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.
    04Through Plinth

    Warm introductions · Powered by PlinthPlus

    How do I get to Sl Green Family Foundation?

    Find your warmest path to Sl Green 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 13 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.

    Possibly out of date. A more recent filing (FY2025) is on record but names no grant recipient in the published copy, so the figures above are from FY2024, the most recent year this funder’s grantee list reached the public record.

    Source object · view filing

    Play a game based on Sl Green 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