· Private foundation
Peter & Susan Solomon 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.
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 $10k51 grants · $112k
- $10k–50k2 grants · $43k
- $50k–250k4 grants · $284k
- $250k+1 grant · $521k
| Recipient | Amount |
|---|---|
| MEMORIAL SLOAN-KETTERING CANCER CENTER | $521,000 |
| PRESIDENT & FELLOWS OF HARVARD COLLEGE | $119,278 |
| MAHNHATTAN THEATRE CLUB | $60,000 |
| AMERICAN MUSEUM OF NATURAL HISTORY | $55,000 |
| UJAFEDERATION | $50,000 |
| RIVERSIDE THEATRE | $23,000 |
| ABRAHAM JOSHUA HESCHEL SCHOOL | $20,000 |
| COUNCIL ON FOREIGN RELATIONS | $8,140 |
| TEMPLE EMANU-EL | $7,500 |
| STUDENT LEADERSHIP NETWORK | $7,500 |
| CONGREGATION EMANU-EL | $5,400 |
| JOHN'S ISLAND COMMUINTY SERVICES LEAUGE | $5,000 |
| AMERICAN RIVERS | $5,000 |
| THE TAFT SCHOOL | $5,000 |
| THE NIGHTINGALE BAMFORD SCHOOL | $5,000 |
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 (FY23–25, $4k) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 86% 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 +16% since the first grant, against 0% for the ones you funded once.
40 repeat relationships — 32 still active in FY2025, 8 since wound down; 25 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, 89% of grant dollars renewed an existing relationship; $89k 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
- AMAmerican Museum of Natural History3× · 2023–2025 · $989k · revenue +8%
- MTMANHATTAN THEATRE CLUB INC3× · 2023–2025 · $175k · revenue +53%
- AJABRAHAM JOSHUA HESCHEL SCHOOL3× · 2023–2025 · $50k · revenue +26%
Funded once
- HUHAVARD UNIVERSITY CENTER FOR JEWISH STUDIESone grant, 2023 · $1.2M
- TATARGET ALS FOUNDATION INCone grant, 2024 · $100k · revenue -36%
- HUHAVARD UNIVERSITY - MANUSCRIPTS AT COSTone grant, 2023 · $54k
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.
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 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…
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…
To educate students to be ethical and socially responsible leaders in a global community.
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).
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…
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
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…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
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.
For reference, the grantee most central to the portfolio’s shape is New York Landmarks Conservancy Inc and the most unlike its peers is Friends of Bossinc. 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 40 years old; the field is 16. You back the established end — and your money leans older still.
The field is 20% startups (under 5 years old) — 3% of your grantees by number, and just 1% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 11% 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.
64 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. 64 of the 92 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 President and Fellows of Harvard College ↗
- Who funds American Museum of Natural History ↗
- Who funds MANHATTAN THEATRE CLUB INC ↗
- Who funds TARGET ALS FOUNDATION INC ↗
- Who funds UNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC ↗
- Who funds ABRAHAM JOSHUA HESCHEL SCHOOL ↗
- Who funds EAST HAMPTON LIBRARY ↗
- Who funds INDIAN RIVER HOSPITAL FOUNDATION INC ↗
- Who funds STUDENT LEADERSHIP NETWORK INC ↗
- Who funds Trustees of Tufts College ↗
- Who funds METROPOLITAN MUSEUM OF ART ↗
- Who funds POLY PREP COUNTRY DAY SCHOOL ↗
- Who funds AMERICAN RIVERS INC ↗
- Who funds COUNCIL ON FOREIGN RELATIONS INC ↗
- Who funds THE NIGHTINGALE-BAMFORD SCHOOL ↗
- Who funds THE TAFT SCHOOL CORPORATION ↗
- Who funds ALZHEIMER'S DRUG DISCOVERY FOUNDATION ↗
- Who funds THE JOHN'S ISLAND FOUNDATION INC ↗
- Who funds RILEY'S WAY FOUNDATION INC ↗
- Who funds UNITED WAY OF INDIAN RIVER COUNTY INC ↗
- Who funds VERO BEACH MUSEUM OF ART INC ↗
- Who funds LONGHOUSE RESERVE ↗
- Who funds CONSTELLATION FOUNDATION ↗
- Who funds THE PARRISH ART MUSEUM INC ↗
- Who funds Museum of Modern Art ↗
- Who funds EAST HAMPTON VILLAGE FOUNDATION ↗
- Who funds SESAME WORKSHOP ↗
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: Jewish Communal Fund · The Maryam and Hervey Seley Foundation · The Donald and Barbara Zucker Family Foundation · Daniel M Neidich & Brooke Garber Foundation · Indian River Community Foundation Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · The Goldman Sachs Charitable Gift Fund · Fjc · The Ayco Charitable Foundation · Federated Foundations Inc · The Thomas J Edelman Foundation · Alfred & Jane Ross Foundation Inc
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 Peter & Susan Solomon Family 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.
- Treasure Coast Community Health Inc — 17% of income from government
- Trustees of Tufts College — 13% of income from government
- President and Fellows of Harvard College — 7% of income from government
- Florida Sheriffs Association Inc — 4% of income from government
- Treasure Coast Food Bank Inc — 2% of income from government
- United Way of Indian River County Inc — 1% of income from government
- Indian River Land Trust 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 Peter & Susan Solomon Family Foundation?
Find your warmest path to Peter & Susan Solomon 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.