· Private foundation
Sonder 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 FY2017–2025.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| BLACK PUBLIC MEDIA INC | $43,100 |
| TEACH FOR AMERICA INC | $40,000 |
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 (FY17–23, $19k) land where the poverty rate runs at 15%, against an area that typically sits at 9%. 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.
38 repeat relationships — 2 still active in FY2025, 36 since wound down.
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, 100% of grant dollars renewed an existing relationship; $0 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
- BPBLACK PUBLIC MEDIA INC8× · 2018–2025 · $95k · revenue +57%
- MCMONTCLAIR CHILD DEVELOPMENT CENTER INC7× · 2017–2023 · $70k · revenue +17%
- MFMONTCLAIR FREE PUBLIC LIBRARY FOUNDATION INC7× · 2017–2023 · $69k · revenue +124%
Funded once
- GPGATES PHILANTHROPY PARTNERSgraduatedone grant, 2022 · $25k · revenue +33%
THE MICHAEL J FOX FOUNDATION FOR PARKINSON'S RESEARCHgraduatedone grant, 2020 · $10k · revenue +150%
MEDECINS SANS FRONTIERES USA INCgraduatedone grant, 2017 · $10k · revenue +98%
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.
To educate students to be ethical and socially responsible leaders in a global community.
To bring quality public television programs and resources to communities throughout new jersey and its tri-state neighbors. its content, both on-air and online, aims to reflect the diverse
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 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.
Manhattan university is an independent catholic instituion of higher learning that embraces qualified men and women of all faiths, cultures, and traditions. the mission of manhattan university is to provide a contemporary, person-centered…
Finance impacts everyone. as a socially relevant organization, the museum of american finance seeks to improve understanding of the influence of financial institutions and capital markets on the u.s. and global economies, and on…
The german marshall fund of the united states (gmf) strives to champion democratic values and the transatlantic alliance by strengthening civil society, forging bold and innovative policy ideas, and developing a new generation of leaders…
To collect, display and interpret objects in craft art and design.
Vision: the morris museum is the region's premier engine of curiosity and wonderment. mission: the morris museum enriches lives with exemplary exhibitions and performances of art, design, and science. see statement attached on schedule o.
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)
Morristown beard school is an educational college preparatory school in grades 6 to 12 located in morristown, new jersey.
Mitchell college educates students through a highly individualized educational approach that brings forward each student's potential, reveals their strengths, and fosters personal growth.
For reference, the grantee most central to the portfolio’s shape is Montclair Child Development Center Inc and the most unlike its peers is Berkeley Law Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 33 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 2% of your grantees by number, and just 2% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 13% 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.
42 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. 42 of the 52 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 Teach for America Inc ↗
- Who funds BLACK PUBLIC MEDIA INC ↗
- Who funds MONTCLAIR CHILD DEVELOPMENT CENTER INC ↗
- Who funds MONTCLAIR FREE PUBLIC LIBRARY FOUNDATION INC ↗
- Who funds THE NEWARK MUSEUM ASSOCIATION ↗
- Who funds THE MONTCLAIR ART MUSEUM ↗
- Who funds MONTCLAIR SCHOLARSHIP FUND ↗
- Who funds RUTGERS UNIVERSITY FOUNDATION ↗
- Who funds GATES PHILANTHROPY PARTNERS ↗
- Who funds GROUNDS FOR SCULPTURE INC ↗
- Who funds UNIVERSITY OF CALIFORNIA BERKELEY FOUNDATION ↗
- Who funds WILLIAM J BRENNAN CENTER FOR JUSTICE INC ↗
- Who funds PARTNERS FOR WOMEN AND JUSTICE INC ↗
- Who funds IMANI Inc ↗
- Who funds HER JUSTICE INC ↗
- Who funds MONTCLAIR FILM FESTIVAL INC ↗
- Who funds SHARRON MILLER'S ACADEMY FOR THE PERFORMING ARTS INC ↗
- Who funds MONTCLAIR AMBULANCE UNIT ↗
- Who funds THE MICHAEL J FOX FOUNDATION FOR PARKINSON'S RESEARCH ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds YWCA METROPOLITAN CHICAGO ↗
- Who funds MONTCLAIR SHARED HOUSING ASSOCIATION INC ↗
- Who funds BERKELEY LAW FOUNDATION ↗
- Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
- Who funds MONTCLAIR EMERGENCY SERVICES FOR HOPE INC ↗
- Who funds HUMAN NEEDS FOOD PANTRY INC ↗
- Who funds FRIENDS OF YOGI INC ↗
- Who funds TIDES CENTER ↗
- Who funds CASA MARIANELLA INC ↗
- Who funds Save The Children Federation Inc ↗
- Who funds WATER MISSIONS INTERNATIONAL ↗
- Who funds HARLEM LACROSSE AND LEADERSHIP CORPORATION ↗
- Who funds SUCCEED2GETHER 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: Investors Foundation Inc · Partners for Health Inc · Community Foundation of New Jersey · The Silver Family Foundation Inc · The Hyde and Watson Foundation · Princeton Area Community Foundation Inc · Montclair Foundation Inc · Susan V Bershad Charitable Fund Inc · The Whitehill Foundation a New Jersey Nonprofit Corporation · JOHN J & ROSE CALI FAMILY FOUNDATION co CALI FUTURES · The Lazard Charitable Foundation · Falcon 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 Sonder 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.
- Montclair Child Development Center Inc — 70% of income from government
- Montclair Historical Society — 67% of income from government
- Save the Children Federation Inc — 30% of income from government
- Partners for Women and Justice Inc — 26% of income from government
- The Montclair Art Museum — 11% of income from government
- Sharron Miller's Academy for the Performing Arts Inc — 6% of income from government
- Montclair Film Festival Inc — 2% of income from government
- Grounds for Sculpture Inc — 1% of income from government
- Montclair Ambulance Unit — 0% of income from government
- Rutgers University Foundation — 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 Sonder Foundation?
Find your warmest path to Sonder 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.