· Private foundation
Sapoff Foundation
Its FY2023 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2023.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| NJ SPCA | $5,000 |
| ANTI DEFAMATION LEAGUE | $3,000 |
| INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS | $1,000 |
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 (FY21–21, $360) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 100% 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 +26% since the first grant, against +14% for the ones you funded once.
26 repeat relationships — 0 still active in FY2023, 26 since wound down; 3 grantees were first funded in FY2023 (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 FY2023, 0% of grant dollars renewed an existing relationship; $9k 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
- RFRAYMOND F KRAVIS CENTER FOR THE PERFORMING ARTS INC6× · 2017–2022 · $76k · revenue +72%
- PBPALM BEACH OPERA INC4× · 2018–2021 · $29k · revenue +69%
MCCARTER THEATRE COMPANY4× · 2017–2021 · $22k · revenue +5%
Funded once
- NSNJ SCHOOL OF DRAMATIC ARTSone grant, 2019 · $10k
Metropolitan Opera Association Incone grant, 2017 · $3k · revenue -2%- TMTHE METROPOLITAN OPERAone grant, 2018 · $3k
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 institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
Biu produces students who excel in the sciences, humanities, law, engineering, business & the arts.
See Form 990, Part I, Line 1, Description of Organization Mission.
Chartered by a unanimous act of congress, the museum is america's national institution for the documentation, study, interpretation, and education of holocaust history and serves as our country's memorial to the victims of the holocaust.…
The Academy's mission is to enhance member career fulfillment and promote brain health for all.
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…
The mission of the jewish museum is to collect, preserve, exhibit and interpret art and jewish culture. see schedule o for more information.
The trustees of the university of pennsylvania (the "university") sees itself as having a public service mission. in such regard, the university aims to provide a rich and diverse educational environment for its students; to pioneer…
AJC's mission is to enhance the wellbeing of the Jewish people and Israel, and to advance human rights and democratic values in the United States and around the world. In pursuit of this mission, AJC advances democratic principles, fights…
The weitzman national museum of american jewish history, on independence mall in philadelphia, presents educational programs and experiences that preserve, explore, and celebrate the history of jews in america. its purpose is to connect…
Fairleigh dickinson university is a center of academic excellence dedicated to the preparation of world citizens through global education. the university strives to provide students with the multi-disciplinary, intercultural, and ethical…
Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.
For reference, the grantee most central to the portfolio’s shape is Jewish Federation of South Palm Beach County Inc and the most unlike its peers is Njspca 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 43 years old; the field is 12. You back the established end — and your money leans older still.
The field is 27% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 17% 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.
27 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. 27 of the 58 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 JEWISH FEDERATION OF SOUTH PALM BEACH COUNTY INC ↗
- Who funds RAYMOND F KRAVIS CENTER FOR THE PERFORMING ARTS INC ↗
- Who funds PALM BEACH OPERA INC ↗
- Who funds MCCARTER THEATRE COMPANY ↗
- Who funds MIAMI CITY BALLET INC ↗
- Who funds THE BICOL CLINIC FOUNDATION INC ↗
- Who funds NJSPCA INC ↗
- Who funds Boca Raton Regional Hospital Inc ↗
- Who funds Metropolitan Opera Association Inc ↗
- Who funds ANTI-DEFAMATION LEAGUE ↗
- Who funds University of Michigan ↗
- Who funds Jewish Women International ↗
- Who funds Institute of Electrical and Electronics Engineers Inc ↗
- Who funds ARTHRITIS FOUNDATION INC ↗
- Who funds GREENWOOD HOUSE HOME FOR THE JEWISH AGED ↗
- Who funds New York University ↗
- Who funds METROPOLITAN MUSEUM OF ART ↗
- Who funds Best Buddies International Inc ↗
- Who funds WOUNDED WARRIOR PROJECT INC ↗
- Who funds THE HIGHLAND BEACH POLICE AND FIRE FOUNDATION 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 Robert Wood Johnson Foundation · The Anne and Gerald Freedman Charitable Foundation Inc · Bristol-Myers Squibb Foundation Inc · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc · Amazonsmile Foundation
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 Sapoff 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, a single department, or state — and drag the year to watch it move.
- Best Buddies International Inc — 4% of income from government
- Institute of Electrical and Electronics Engineers Inc — 1% of income from government
- Wounded Warrior Project 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 Sapoff Foundation?
Find your warmest path to Sapoff 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.