· Public charity
Sam and Peggy Grossman Family Foundation
To perform the functions of, or to carry out the purposes of the arizona community foundation, an az nonprofit corporation, so long as the arizona community foundation, inc.
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.
The 11 grants below total $242,500 — the rows itemised in this filing. The $322,250 headline is the total grant expense reported on the return, so the remaining $79,750 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.
By grant size · FY2025
- Under $10k1 grant · $8k
- $10k–50k9 grants · $185k
- $50k–250k1 grant · $50k
| Recipient | Amount |
|---|---|
| IAMA THEATRE COMPANY | $50,000 |
| SUN VALLEY WRITERS CONFERENCE | $30,000 |
| IDAHO BASECAMP INC | $30,000 |
| NATIONAL CONSTITUTION CENTER | $30,000 |
| MANHATTAN CLASS COMPANY INC | $25,000 |
| PLOUGHSHARES FUND INC | $20,000 |
| LYMPHATIC EDUCATION AND RESEARCH NETWORK | $20,000 |
| IDAHO RIVERS UNITED INC | $10,000 |
| RIOS TO RIVERS | $10,000 |
| SAGE SCHOOL | $10,000 |
| UTAH FILM CENTER | $7,500 |
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, $44k) land where the poverty rate runs at 7%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-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.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 15% of Sam and Peggy Grossman Family Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
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 +22% since the first grant, against +20% for the ones you funded once.
15 repeat relationships — 7 still active in FY2025, 8 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, 62% of grant dollars renewed an existing relationship; $93k 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
- BNBARROW NEUROLOGICAL FOUNDATION5× · 2018–2022 · $450k · revenue +9%
SUN VALLEY WRITERS' CONFERENCE INC7× · 2017–2025 · $182k · revenue +32%- SLST LUKE'S WOOD RIVER FOUNDATION INC3× · 2020–2022 · $150k · revenue +3%
Funded once
- SVSun Valley Community School Incgraduatedone grant, 2017 · $255k · revenue +56%
- WRWOOD RIVER LAND TRUST COgraduatedone grant, 2024 · $31k · revenue +35%
- UOUNIVERSITY OF WASHINGTON FOUNDATIONgraduatedone grant, 2019 · $30k · revenue +28%
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 union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.
The purpose of the water research foundation (wrf) is a definitive research organization to advance the science of all things water to better meet the evolving needs of its subscribers and the water sector. to engage exclusively in…
The Sierra Fund (TSF) is a non-profit organization with a mission to restore ecosystem and community resiliency in the Sierra Nevada.
To effectively and efficiently mitigate risks to the reliability and security of the western interconnection's bulk power system.
Heal utah's mission is to protect utah's environment and its people by promoting clean air, clean energy, and comprehensive solutions to radioactive and toxic waste.
Life science washington is a non-profit trade and professional association dedicated to promoting innovation and responsible growth in the life sciences and biomedical industries in the state of washington. promotion and education are…
To support educational, research and public functions and programs of the riverside campus of the university of california.
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.
To harness the power of the human immune system and advanced computing technologies to create and translate scientific discoveries into next generation vaccines and therapies for prevention, control and cure of chronic diseases, enabling…
Utah water ways promotes water conservation through collaboration between government, non-profit groups, and private sector partners and empowers the public to be wise stewards of this critical shared resource.
Wri is committed to creating change that improves people's lives and ensures the natural world can thrive. (see schedule o)wri's bold vision requires a formula for success we call "count it. change it. scale it.":- count it: our work is…
Summit land conservancy works with utah communities to conserve land and water for the benefit of the people and nature.
For reference, the grantee most central to the portfolio’s shape is Saint John's Health Center Foundation and the most unlike its peers is Idaho Rivers United. 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 31 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) — 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 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.
34 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.
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 UCLA FOUNDATION ↗
- Who funds FIDELITY INVESTMENTS CHARITABLE GIFT FUND ↗
- Who funds BARROW NEUROLOGICAL FOUNDATION ↗
- Who funds Sun Valley Community School Inc ↗
- Who funds SUN VALLEY WRITERS' CONFERENCE INC ↗
- Who funds ST LUKE'S WOOD RIVER FOUNDATION INC ↗
- Who funds HAVE A HEART SAVE A HEART ↗
- Who funds IAMA THEATRE COMPANY ↗
- Who funds THE SAGE SCHOOL INC ↗
- Who funds PLOUGHSHARES FUND INC ↗
- Who funds SUN VALLEY SKI EDUCATION FOUNDATION INC ↗
- Who funds LYMPHATIC EDUCATION & RESEARCH NETWORK INC (LE&RN) ↗
- Who funds AMERICAN CANCER SOCIETY INC ↗
- Who funds WOOD RIVER LAND TRUST CO ↗
- Who funds IDAHO RIVERS UNITED ↗
- Who funds IDAHO BASE CAMP INC ↗
- Who funds NATIONAL CONSTITUTION CENTER ↗
- Who funds UNIVERSITY OF WASHINGTON FOUNDATION ↗
- Who funds SAINT JOHN'S HEALTH CENTER FOUNDATION ↗
- Who funds SUN VALLEY INSTITUTE FOR RESILIENCE ↗
- Who funds HIGHER GROUND USA INC ↗
- Who funds MANHATTAN CLASS COMPANY INC ↗
- Who funds BLAINE COUNTY HUNGER COALITION INC ↗
- Who funds Rios to Rivers ↗
- Who funds FLOURISH FOUNDATION INC ↗
- Who funds SAWTOOTH SOCIETY INC ↗
- Who funds SUN VALLEY CENTER FOR THE ARTS INC ↗
- Who funds SUN VALLEY SUMMER SYMPHONY INC ↗
- Who funds THE NATURE CONSERVANCY ↗
- Who funds UTAH FILM CENTER ↗
- Who funds CLIMATE RIDE INC ↗
- Who funds SUN VALLEY WELLNESS INSTITUTE ↗
- Who funds THE LIBRARY FOUNDATION OF LOS ANGELES ↗
- Who funds United Cancer Front A Corporation ↗
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: Spur Community Foundation Inc · The Springcreek Foundation · Heinz Family Foundation · Boswell Family Foundation · Idaho Community Foundation Inc · Marin Community Foundation · The Bessemer Giving Fund · Jonathan and Susan Dolgen Family Foundation Inc · The Quinn Family Foundation Inc · Koa Charitable Trust · The Von Der Heyden Family Foundation · The Marshall Frankel 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 Sam and Peggy Grossman 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.
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 Sam and Peggy Grossman Family Foundation?
Find your warmest path to Sam and Peggy Grossman 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.