· Private foundation
The Weiss 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 FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k3 grants · $15k
- $10k–50k5 grants · $71k
| Recipient | Amount |
|---|---|
| WILDLIFE CONSERVATION NETWORK | $21,000 |
| RIGHTS BEHIND BARS | $15,000 |
| OCEAN CONSERVANCY | $15,000 |
| HARLEM CHILDREN'S ZONE | $10,000 |
| FOOD GATHERERS | $10,000 |
| WILD BIRD FUND | $5,000 |
| BLUE RIDGE ABORTION FUND | $5,000 |
| THE BROADWAY COMMUNITY | $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 (FY18–25, $120k) land where the poverty rate runs at 15%, against an area that typically sits at 11%. 96% 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 +73% since the first grant, against +45% for the ones you funded once.
9 repeat relationships — 6 still active in FY2025, 3 since wound down; 2 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, 83% of grant dollars renewed an existing relationship; $15k 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
- WCWILDLIFE CONSERVATION NETWORK INC9× · 2017–2025 · $131k · revenue +302%
- OCOCEAN CONSERVANCY9× · 2017–2025 · $95k · revenue +97%
- FGFOOD GATHERERS9× · 2017–2025 · $90k · revenue +73%
Funded once
- AEAMERICAN EVALUATION ASSOCIATIONgraduatedone grant, 2017 · $14k · revenue +48%
- AAVENIDASone grant, 2020 · $5k · revenue -2%
- MOMUSEUM OF SCIENCEone grant, 2017 · $5k · revenue -41%
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.
We generate ideas, produce evidence, and design solutions to improve the lives of underserved populations around the world. we take a multidisciplinary, intergenerational, life-cycle approach that contributes to (see schedule o)four global…
To end hunger in san francisco and marin counties by soliciting food donations nationally, distributing this food to qualifying public service agencies and neighborhood pantries, advocating for improved government food programs, and…
Women's law project creates a more just and equitable society by advancing the rights and status of all women throughout their lives. to this end, we engage in high-impact litigation, advocacy, and education. the core values of women's law…
Power to decide envisions a world where everyone - no matter who they are or where they live - has control over their bodies and can decide if, when, and under what circumstances to get pregnant and have a child. its mission is to advance…
To end hunger in communities throughout new york city. (see schedule o)to end hunger in communities throughout new york city. we do this through food rescue and distribution, education, and other practical, innovative solutions.
Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)
To engage and catalyze global seafood supply chains in rebuilding depleted fish stocks and reducing the environmental impacts of fishing and fish farming.
The aspca's mission, as stated by founder henry bergh in 1866, is "to provide effective means for the prevention of cruelty to animals throughout the united states." the aspca was founded on the belief that animals are entitled to kind and…
Food forward fights hunger and prevents food waste by rescuing fresh surplus produce, connecting this abundance with people experiencing food insecurity, and inspiring others to do the same.
Fern seeks to make the food system more sustainable and equitable through powerful journalism and storytelling.
Project drawdown's mission is to drive meaningful climate action by advancing science-based solutions and strategies. project drawdown's work is focused on three pillars: science - advancing science-based climate solutions and strategies;…
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 Calvary Women's Services Inc and the most unlike its peers is Dc Abortion Fund. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
19 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. 19 of the 21 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 WILDLIFE CONSERVATION NETWORK INC ↗
- Who funds OCEAN CONSERVANCY ↗
- Who funds FOOD GATHERERS ↗
- Who funds RIGHTS BEHIND BARS INC ↗
- Who funds NURSE-FAMILY PARTNERSHIP ↗
- Who funds DC ABORTION FUND ↗
- Who funds DOROT INC ↗
- Who funds BROADWAY COMMUNITY INC ↗
- Who funds AMERICAN EVALUATION ASSOCIATION ↗
- Who funds HARLEM CHILDREN'S ZONE INC ↗
- Who funds WILD BIRD FUND INC ↗
- Who funds BLUE RIDGE ABORTION FUND INC ↗
- Who funds AVENIDAS ↗
- Who funds MUSEUM OF SCIENCE ↗
- Who funds CAPITAL AREA FOOD BANK INC ↗
- Who funds SECOND HARVEST OF SILICON VALLEY ↗
- Who funds CALVARY WOMEN'S SERVICES INC ↗
- Who funds BROOKLYN COMMUNITY BAIL FUND INC ↗
- Who funds PLANNED PARENTHOOD OF GREATER NEW YORK 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: Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · 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 The Weiss 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 or a single department — and drag the year to watch it move.
- Museum of Science — 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 The Weiss Family Foundation?
Find your warmest path to The Weiss 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.