· Private foundation
Willam T & Susana D Huston 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
By grantee IRS cause code (NTEE).
A cause breakdown isn’t shown here: 73% of Willam T & Susana D Huston Family Foundation’s grantee dollars fall outside its nine largest cause areas, whether because the recipient carries no IRS cause code or because its cause sits in the long tail. A chart would be mostly one residual band and misrepresent the portfolio.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| Cystic Fibrosis Foundation | $440,000 |
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 (FY22–24, $47k) land where the poverty rate runs at 10%, against an area that typically sits at 10%. 15% 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.
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.
37 repeat relationships — 1 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
- FOFriends of Rancho San Pedro5× · 2020–2024 · $192k · revenue +74%
PARKINSON'S FOUNDATION INC5× · 2020–2024 · $146k · revenue +109%- FTFuture Talent of Silicon Valley5× · 2020–2024 · $69k · revenue +133%
Funded once
- SJSt John Vianney Theological Seminarone grant, 2024 · $28k
- PCPregnancy Center of San Gabriel Valone grant, 2021 · $10k
- SCSANTA CATALINA ISLAND CONSERVANCYgraduatedone grant, 2020 · $8k · revenue +146%
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.
MISSION STATEMENT: MISSION: CARING FOR OUR PATIENTS FIRST AND OUR PEOPLE ALWAYS. VISION: TO BE THE MOST COMPREHENSIVE, INTEGRATED AND CONNECTED HEALTH SYSTEM FOR GETTING AND STAYING WELL. VALUES: EXCELLENCE - We deliver high-quality,…
Ucsf health community hospital's mission statement is caring, healing, teaching, and discovering.
The central mission of the university of southern california is the development of human beings and society as a whole through the cultivation and enrichment of the human mind and spirit. the principal means by which our mission is…
Pacific central coast health centers', sponsored by dignity community care, mission is to provide access to cost effective, quality medical services in the northern santa barbara county, san luis obispo county, kern county and ventura…
To ensure coast redwood forests in the santa cruz mountains thrive for generations to come. since 1900, sempervirens has protected more than 36,000 acres. learn more about our mission, vision, and strategic plan through 2030 at:…
Huntington Health stands for community. We stand for compassion. But more than anything, Huntington stands for health. Providing world-class health care is our specialty, and it's what we've been doing for the San Gabriel Valley since…
The san diego foundation inspires enduring philanthropy and enables community solutions to improve the quality of life in our region.
The Chile-California Council is a San Francisco-based nonprofit dedicated to developing and promoting joint endeavors and cooperative relations between Chile and California, as well as individuals, legal entities and other institutions in…
MISSION STATEMENT: MISSION: CARING FOR OUR PATIENTS FIRST AND OUR PEOPLE ALWAYS. VISION: TO BE THE MOST COMPREHENSIVE, INTEGRATED AND CONNECTED HEALTH SYSTEM FOR GETTING AND STAYING WELL. VALUES: EXCELLENCE - We deliver high-quality,…
Catholic charities of santa clara county serves and advocates for families and individuals in need, especially those living in poverty. rooted in gospel values, we work to create a more just and compassionate community in which people of…
For reference, the grantee most central to the portfolio’s shape is Sacred Heart Retreat House Inc and the most unlike its peers is Catalina Chimes Tower 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 49 years old; the field is 14. You back the established end — and your money leans older still.
The field is 24% 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 14% 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.
18 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. 18 of the 44 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 Friends of Rancho San Pedro ↗
- Who funds PARKINSON'S FOUNDATION INC ↗
- Who funds Future Talent of Silicon Valley ↗
- Who funds Amigos For Christ Inc ↗
- Who funds CORPORATION OF GONZAGA UNIVERSITY ↗
- Who funds WELLS OF LIFE INC ↗
- Who funds CHRIST CHILD SOCIETY OF MONTEREY BAY INC ↗
- Who funds PEPPERDINE UNIVERSITY ↗
- Who funds SACRED HEART RETREAT HOUSE INC ↗
- Who funds CATHOLIC BIG BROTHERS BIG SISTERS INC ↗
- Who funds SAMARITAN HOUSE ↗
- Who funds DAVIS PHINNEY FOUNDATION ↗
- Who funds THE BRIAN GRANT FOUNDATION ↗
- Who funds Treasures of the Church Inc ↗
- Who funds Catalina Chimes Tower Foundation ↗
- Who funds SANTA CATALINA ISLAND CONSERVANCY ↗
- Who funds SOLUTIONS FOR CHANGE 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: Catholic Community Foundation of Los Angeles · The Northrop Grumman Foundation · Orange County Community Foundation · Sempra Foundation · Natl Christian Charitable Fdn Inc · American Endowment Foundation · The Blackbaud Giving Fund · Charities Aid Foundation America · Morgan Stanley Global Impact Funding Trust Inc · Network for Good · National Philanthropic Trust · American Online Giving 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 Willam T & Susana D Huston 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 Willam T & Susana D Huston Family Foundation?
Find your warmest path to Willam T & Susana D Huston 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.