· Private foundation
Marvin M Tenberg Charitable Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant clustered by its grantee’s IRS cause code (NTEE), by year — across FY2020–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k3 grants · $4k
- $10k–50k5 grants · $104k
- $50k–250k1 grant · $60k
| Recipient | Amount |
|---|---|
| HUMANE SOCIETY OF TAMPA BAY | $60,000 |
| CHIMP HAVEN | $29,000 |
| BALTIMORE HUMANE SOCIETY | $25,000 |
| FEEDING TAMPA BAY | $20,000 |
| SUSAN TERRY FOUNDATION | $15,000 |
| STRAZ PERFORMING ARTS FOUNDATION | $15,000 |
| USA FOR UNFPA | $2,092 |
| APEX1 GIRLS VOLLEYBALL | $1,050 |
| WIKIMEDIA FOUNDATION | $520 |
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 (FY20–21, $60k) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 67% 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 +37% since the first grant, against +28% for the ones you funded once.
8 repeat relationships — 5 still active in FY2025, 3 since wound down; 4 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; $19k 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
Humane Society of Tampa Bay Inc5× · 2021–2025 · $240k · revenue +193%
INTERNATIONAL FUND FOR ANIMAL WELFARE INC5× · 2020–2024 · $190k · revenue +42%- FAFEEDING AMERICA TAMPA BAY INC6× · 2020–2025 · $120k · revenue +37%
Funded once
AMERICAN CIVIL LIBERTIES UNION FOUNDATION INCgraduatedone grant, 2020 · $20k · revenue +65%
MEDECINS SANS FRONTIERES USA INCone grant, 2021 · $20k · revenue +20%- RMRonald McDonald House Globalgraduatedone grant, 2020 · $20k · revenue +82%
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.
Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.
Animal outlook is a national animal protection organization working to end the abuse of farmed animals using a variety of strategies, including investigations, legal advocacy, corporate and food system reform, and vegan outreach.
We exist to end the abuse of animals raised for food. this mission is executed by persuading companies and institutions to adopt animal welfare policies through negotiation and pressure campaigns, and then holding them accountable to their…
Wildaid's mission is to inspire change and empower the world to protect wildlife and vital habitats from critical threats.
Friends of the earth strives for a more healthy and just world by defendng the environment and human health while advancing social and economic justice by conducting research and education, transforming the economy so it protects the…
To improve and save lives through compassionate care, community engagement and advocacy for animals.
For over 20 years, chai's mission has been to save lives and improve health outcomes in low-and middle-income countries around the world. we do this by enabling the government and private sector to strengthen and sustain quality health…
To advocate for policy changes by governments and corporations in order to preserve ocean life and return the oceans to their former abundance.
Ci works to spotlight and secure the critical benefits that nature provides to humanity.
Our mission is to act to conserve threatened species and ecosystems worldwide, choosing solutions that are sustainable, based on sound science and take into account human needs.
Mercy for animals' mission is to construct a compassionate food system that is not just kind to animals but essential for the future of our planet and all who share it. our vision of a world where animals are respected, protected, and free…
Marin humane transforms lives through exceptional animal care, humane education, and advocacy. every day, marin humane inspires compassion and positive relationships between people and animals.
For reference, the grantee most central to the portfolio’s shape is Feeding America Tampa Bay Inc and the most unlike its peers is Healing Hearts Cafe Inc. 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 34 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) — 10% of your grantees by number, and just 2% 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.
20 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. 20 of the 32 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 Humane Society of Tampa Bay Inc ↗
- Who funds INTERNATIONAL FUND FOR ANIMAL WELFARE INC ↗
- Who funds FEEDING AMERICA TAMPA BAY INC ↗
- Who funds THE HUMANE SOCIETY OF BALTIMORE COUNTY INC ↗
- Who funds CHIMP HAVEN INC ↗
- Who funds CAN COMMUNITY HEALTH INC ↗
- Who funds AMERICAN CIVIL LIBERTIES UNION FOUNDATION INC ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds Ronald McDonald House Global ↗
- Who funds GUIDING EYES FOR THE BLIND INC ↗
- Who funds Children of the Night ↗
- Who funds THE INNOCENCE PROJECT INC ↗
- Who funds STARTING RIGHT NOW ↗
- Who funds SUSAN E TERRY FOUNDATION INC ↗
- Who funds HEALING HEARTS CAFE INC ↗
- Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds WORLD CENTRAL KITCHEN INC ↗
- Who funds USA FOR UNFPA INC ↗
- Who funds WORLD WILDLIFE FUND INC ↗
- Who funds WIKIMEDIA FOUNDATION INC ↗
Government reliance of your grantees
Every dot is one organization Marvin M Tenberg Charitable 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.
- Feeding America Tampa Bay Inc — 2% of income from government
- Can Community Health 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 Marvin M Tenberg Charitable Foundation?
Find your warmest path to Marvin M Tenberg Charitable 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.