· Private foundation
G W Williams Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.
Where the money goes
Grants by size, and the largest recipients.
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 |
| JOBTRAIN | $1,000 |
| TUNNEL TO TOWERS FOUNDATION | $1,000 |
| BURLINGAME ROTARY SERVICE FUND | $1,000 |
| SECOND HARVEST FOOD BANK OF CENTRAL | $1,000 |
| UNIVERSITY OF WASHINGTON CONSERVATI | $1,000 |
| SCIENCE FOR SCIENTISTS | $1,000 |
| LEUKEMIA & LYMPHOMA SOCIETY | $1,000 |
| TENNGREEN LAND CONSERVANCY | $1,000 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its 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. Its grants skew toward lower-need ZIPs.
How this is measured
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
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
How this is measured
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%
How this is measured
Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.
Closest unfunded matches
The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. 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.
How this is measured
16 grantees tracked through their own filings, 2017–2025.
Each grant beside the grantee’s revenue from every source, year by year.
How this is measured
Counted here: distinct organizations funded across 2017 to 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.
Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
Grantee by grantee: a decade per organization, before and after funding
A decade per grantee: revenue shaded, 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 ↗
Co-funders
Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: 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
How this is measured
How much its grantees rely on government
Each dot is one organization G W Williams Foundation funds: left to right is the share of its income from government, bottom to top the share from G W Williams Foundation. Bigger dots raise more.
- 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
How this is measured
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.
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