· Private foundation
Martin D & Jean Shafiroff 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.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2021–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k70 grants · $170k
- $10k–50k21 grants · $325k
- $50k–250k2 grants · $199k
| Recipient | Amount |
|---|---|
| GLOBAL STRAYS | $127,000 |
| CENTER FOR JEWISH LIFE OF NY | $72,000 |
| SOUTHAMPTON HOSPITAL FOUNDATION | $41,780 |
| AMERICAN RED CROSS | $24,900 |
| NEW YORK WOMEN'S FOUNDATION | $24,000 |
| FRENCH HERITAGE SOCIETY | $21,010 |
| CASITA MARIA | $19,000 |
| SOUTHAMPTON ANIMAL SHELTER | $16,680 |
| MISSION SOCIETY OF NYC | $16,100 |
| URBAN RESOURCE INSTITUTE | $15,000 |
| JUPITER POLICE FOUNDATION | $15,000 |
| VIENNESE OPERA BALL | $15,000 |
| FIT FOUNDATION | $12,000 |
| HISTORICAL SOCIETY OF PALM BEACH | $11,900 |
| MUSEUM OF DEMOCRCY | $11,250 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your human-services grants (FY21–25, $203k) land where the poverty rate runs at 16%, against an area that typically sits at 10%. 85% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +7% since the first grant, against 0% for the ones you funded once.
80 repeat relationships — 60 still active in FY2025, 20 since wound down; 33 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 86% of grant dollars renewed an existing relationship; $100k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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
- GSGLOBAL STRAYS INC5× · 2021–2025 · $263k · revenue +14%
- TSTHE SOUTHAMPTON HOSPITAL FOUNDATION INC5× · 2021–2025 · $181k · revenue +215%
- TSTHE SOUTHAMPTON ANIMAL SHELTER FOUNDATION INC5× · 2021–2025 · $127k · revenue +24%
Funded once
- VIVETERINARIANS INTERNATIONAL INCone grant, 2022 · $43k · revenue -52%
- CACHESHAL ACADEMYone grant, 2023 · $10k
- WEWOMEN'S E-NEWSone grant, 2024 · $9k · revenue -34%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
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)
Established in 1971, the mission of the new york foundation for the arts (nyfa) is to empower artists in all disciplines, as well as cultural workers, to achieve success on their own terms by providing critical support, resources, and…
The mission of the jewish museum is to collect, preserve, exhibit and interpret art and jewish culture. see schedule o for more information.
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).
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…
The Foundation for Art and Preservation in Embassies (FAPE) is dedicated to enhancing the United States' image abroad through American Art. Founded as a public-private, non-partisan partnership in 1986, FAPE works with the U.S. Department…
The Museum's mission is to encourage and promote the appreciation of fine art to people in its surrounding communities and beyond. The Museum is dedicated to fostering a deeper understanding of the arts, with particular emphasis on the…
Supports the nyu institute of fine arts, a division of the nyu graduate school of arts and science; which is devoted to graduate teaching and research in the history of art and archeology and the conservation of works of 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.
The mission of the national academy of design is to promote the fine arts in america through exhibition and education.
The museum of jewish heritage - a living memorial to the holocaust is new york's contribution to the global responsibility to never forget. see schedule o for additional information.
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.
For reference, the grantee most central to the portfolio’s shape is French Heritage Society Inc and the most unlike its peers is Mommys Heart Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 31 years old; the field is 15. You back the established end — and your money leans older still.
The field is 21% startups (under 5 years old) — 3% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 2% lost their exemption, against 12% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
99 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 99 of the 184 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds GLOBAL STRAYS INC ↗
- Who funds THE SOUTHAMPTON HOSPITAL FOUNDATION INC ↗
- Who funds THE SOUTHAMPTON ANIMAL SHELTER FOUNDATION INC ↗
- Who funds FRENCH HERITAGE SOCIETY INC ↗
- Who funds NEW YORK WOMEN'S FOUNDATION INC ↗
- Who funds CASITA MARIA INC ↗
- Who funds FASHION INSTITUTE OF TECHNOLOGY FOUNDATION ↗
- Who funds VIENNESE OPERA BALL ↗
- Who funds AMERICAN HUMANE ASSOCIATION ↗
- Who funds THE ELLEN P HERMANSON FOUNDATION ↗
- Who funds VETERINARIANS INTERNATIONAL INC ↗
- Who funds N Y C MISSION SOCIETY ↗
- Who funds SCOA INC ↗
- Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
- Who funds SOUTHAMPTON HISTORY MUSEUM ↗
- Who funds NEW YORK BOTANICAL GARDEN ↗
- Who funds HEART OF THE HAMPTONS LTD ↗
- Who funds ADMIRALS COVE FOUNDATION INC ↗
- Who funds American Foundation of Savoy Orders Incorporated ↗
- Who funds BALLET THEATRE FOUNDATION INC ↗
- Who funds NEW YORK CITY BALLET INC ↗
- Who funds URBAN RESOURCE INSTITUTE ↗
- Who funds JUPITER POLICE FOUNDATION INC ↗
- Who funds American Friends of Blerancourt Inc ↗
- Who funds MODACARES FOUNDATION INC ↗
- Who funds Jupiter Medical Center Inc ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: The David Hochberg Foundation · Yaffa Foundation Inc · Andrew Sabin Family Foundation · Jewish Communal Fund · John and Margo Catsimatidis Foundation Inc · The New York Community Trust · May and Samuel Rudin Family Foundation Inc · Albert a Arditti Foundation Inc · The Harry & Phyllis Manko Family Foundation · Druckenmiller Foundation · The Donald and Barbara Zucker Family Foundation · The Goldman Sachs Charitable Gift Fund
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Martin D & Jean Shafiroff Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
- Jupiter Medical Center Inc — 2% of income from government
- Big Dog Ranch Rescue Inc — 0% of income from government
- The Palm Beach Symphony Society Inc — 0% of income from government
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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.
Warm introductions · Powered by PlinthPlus
How do I get to Martin D & Jean Shafiroff Foundation?
Find your warmest path to Martin D & Jean Shafiroff 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.