· Private foundation
G W Williams Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
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 $10k11 grants · $21k
- $10k–50k1 grant · $30k
| Recipient | Amount |
|---|---|
| SAN MATEO COUNTY HISTORICAL ASSOC | $30,000 |
| COASTSIDE LAND TRUST | $5,000 |
| MILLS PENINSULA FOUNDATION | $5,000 |
| MISSION HOSPICE & HOME CARE | $3,000 |
| SCIENCE FOR SCIENTISTS | $1,000 |
| UNIVERSITY OF WASHINGTON CONSERVATI | $1,000 |
| JOBTRAIN | $1,000 |
| TENNGREEN LAND CONSERVANCY | $1,000 |
| LEUKEMIA & LYMPHOMA SOCIETY | $1,000 |
| TUNNEL TO TOWERS FOUNDATION | $1,000 |
| SECOND HARVEST FOOD BANK OF CENTRAL | $1,000 |
| BURLINGAME ROTARY SERVICE FUND | $1,000 |
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 (FY17–25, $37k) land where the poverty rate runs at 8%, against an area that typically sits at 8%. 11% 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.
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.
13 repeat relationships — 9 still active in FY2025, 4 since wound down; 3 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, 94% of grant dollars renewed an existing relationship; $3k 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
- SMSAN MATEO COUNTY HISTORICAL ASSOCIATION6× · 2020–2025 · $55k · revenue +53%
- CLCoastside Land Trust9× · 2017–2025 · $43k · revenue +83%
- MHMILLS-PENINSULA HOSPITAL FOUNDATION6× · 2017–2022 · $30k · revenue +29%
Funded once
- VFVOLUNTEER FLORIDA FOUNDATION INCgraduatedone grant, 2024 · $5k · revenue +345%
- SISAVED IN AMERICAone grant, 2020 · $1k · revenue -71%
STEPHEN SILLER TUNNEL TO TOWERS FOUNDATIONgraduatedone grant, 2021 · $1k · revenue +112%
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 promote philanthropy to make santa cruz county a better place to live, now and in the future.we bring together people, ideas, and resources to inspire philanthropy and accomplish great things.
See schedule okqed serves the people of northern california with a community-supported alternative to commercial media, providing the knowledge needed to make informed decisions; convening community dialogue; bringing the arts to everyone;…
The california dental association is committed to the success of our members in service to their patients and the public.
The organization provides professional investment management services for endowed gifts and financial assets entrusted to the ucsf foundation.
To support salem health, salem health west valley and related organizations.
Ca fwd drives action to identify solutions that can be taken to scale to meet the challenges the state is facing. the organization is driven by the belief that regional solutions across the state will help ensure economic, environmental,…
The mission of the silicon schools fund is to improve education through supporting the launch of excellent new schools, improving academic instruction in existing schools, and by funding some of the boldest innovations in education…
The santa fe community foundation inspires philanthropic generosity, strengthens nonprofits, and fosters positive change to build a more vibrant, healthy, and resilient region. the foundation's vision is a thriving northern new mexico,…
Clsa advances californias world-leading life sciences innovation ecosystem by advocating for effective national, state and local public policies and supporting entrepreneurs and life sciences businesses.
The mission of the mount sinai health system is to provide compassionate patient care with seamless coordination and to advance medicine through unrivaled education, research, and outreach in the many diverse communities we serve.
The foundation's mission is to improve the oral health of all californians by supporting the dental profession and its efforts to meet community needs.
To serve our communities by provding innovative and compassionate healthcare.
For reference, the grantee most central to the portfolio’s shape is Mission Hospice & Home Care Inc and the most unlike its peers is Saved in America. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
16 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. 16 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 SAN MATEO COUNTY HISTORICAL ASSOCIATION ↗
- Who funds Coastside Land Trust ↗
- Who funds MISSION HOSPICE & HOME CARE INC ↗
- Who funds MILLS-PENINSULA HOSPITAL FOUNDATION ↗
- Who funds SONOMA COUNTY COMMUNITY FOUNDATION ↗
- Who funds COMMUNITY FOUNDATION OF THE NAPA VALLEY ↗
- Who funds BLOOD CANCER UNITED INC ↗
- Who funds JOBTRAIN INC ↗
- Who funds SCIENCE FROM SCIENTISTS INC ↗
- Who funds VOLUNTEER FLORIDA FOUNDATION INC ↗
- Who funds WOUNDED WARRIOR PROJECT INC ↗
- Who funds ABILITYPATH ↗
- Who funds SECOND HARVEST FOOD BANK OF CENTRAL FLORIDA INC ↗
- Who funds SAVED IN AMERICA ↗
- Who funds TENNGREEN LAND CONSERVANCY ↗
- Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
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: Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Morgan Stanley Global Impact Funding Trust Inc · American Endowment Foundation · The Joseph W Welch Jr Foundation · Silicon Valley Community Foundation · Atkinson Foundation · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund
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 G W Williams 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.
- Volunteer Florida Foundation Inc — 2% of income from government
- Second Harvest Food Bank of Central Florida Inc — 0% of income from government
- Wounded Warrior Project 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 G W Williams Foundation?
Find your warmest path to G W Williams 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.