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Plinth

· Public charity

San Mateo Rotary Foundation

Support porgrams for youth, educational opportunities and interantional exchagnes for students, teachers, and other professionals.

$158k
Granted FY2025still arriving
4
Grants FY2025still arriving
1
States reached
$51k
Largest
01What you fund
01100% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20172025.

Education$166kHealth$62kHuman Services$30kCommunity Improvement$28kYouth Development$16kArts & Culture$13kAnimals$13kHousing & Shelter$7k
02FY2025 · 4 grants

Where the money goes

Your grants by size, and where they go.

The 4 grants below total $84,200 — the rows itemised in this filing. The $157,700 headline is the total grant expense reported on the return, so the remaining $73,500 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–50k2 grants · $25k
  • $50k–250k1 grant · $51k
$12,500
Median grant
1
States reached
$2.0M
Total assets
Largest grants
RecipientAmount
SAN MATEO COUNTY COMMUNITY COLLEGES FOUNDATION$51,200
REDWOOD CITY ART CENTER ART BIAS$12,500
PENINSULA HUMANE SOCIETY$12,500
NAMASTE DIRECT$8,000
02The need
03

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.

show:

Your human-services grants (FY23–23, $30k) land where the poverty rate runs at 7%, against an area that typically sits at 7%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 7%STARVISTA CRISIS CENTER OF SAN MATEO COUNTY: $30k → 7%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

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.

03Your edge
repeat funding

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.

63%of every dollar goes to organizations you’ve funded before.
$210k · 3 repeat orgs$124k to everyone else

3 repeat relationships — 2 still active in FY2025, 1 since wound down; 2 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

3
6

Total granted

$210k
$99k

Median revenue growth · since first grant

+21%
+28%

Still filing today

100%
100%

New vs renewed · share of each year

In FY2025, 70% of grant dollars renewed an existing relationship; $25k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’18’19’20’21’22’23’24’25
HealthEducationYouth DevelopmentHuman ServicesAnimalsArts & CultureOther

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

  • SM
    San Mateo County Community Colleges Foundation
    7× · 2017–2025 · $166k · revenue +62%
  • NF
    NAMASTE FOUNDATION
    2× · 2024–2025 · $28k · revenue -22%
  • SM
    San Mateo Police Activities League Inc
    4× · 2017–2020 · $16k · revenue +21%

Funded once

  • S
    StarVista
    one grant, 2023 · $30k · revenue +7%
  • CC
    California Clubhouse DBA Aspire House
    one grant, 2022 · $20k · revenue -27%
  • OL
    ONE LIFE COUNSELING CENTERgraduated
    one grant, 2022 · $20k · revenue +40%

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

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.

1
Marina Counseling Center

To provide high-quality, heart-centered, affordable, and accessible psychotherapy to our diverse San Francisco/Bay Area communities. The MCC offers excellent training and supervision for the next generation of mental health professionals.

Health
2
Nami Sonoma County

NAMI Sonoma County's mission is to build better lives for individuals and families affected by mental illness throughout Sonoma County by providing education, support, and advocacy.

3
San Mateo County Health Foundation

San Mateo County Health Foundation promotes and champions the health and well-being of all residents of San Mateo County community, regardless of ability to pay, primarily through supporting excellence and innovation in the County's…

4
Sol of San Mateo County

To assist communities in reaching their potential by providing mental health funding to people in need

Health
5
San Mateo County Medical Association

The Organizations mission is to promote and develop the science and art of medicine to conserve and promote public health and to assess and maintain the social and economic responsibilities of the profession.

6
Nami Monterey County

NAMI Monterey County provides advocacy, education, support, and public awareness so that all individuals and families affected by mental illness can build better lives.

7
San Mateo Chamber of Commerce

The Mission of the San Mateo Area Chamber of Commerce is to create an environment for businesses to start, grow, and succeed.

8
Silicon Valley Independent Living Center

SVILC builds disability identity, culture, pride, creating opportunities for personal and community transformation, and partnering with others to ensure that civil and human rights are protected.

Human Services
9
Bay Area Community Services Housing Corp

Improve the quality of life for individuals in Alameda County, Contra Costa County, Solano County, Monterey County, Sacramento County and the surrounding area in the State of California.

Housing & Shelter
10
Pacific Center for Human Growth

Provides culturally responsive therapy, peer to peer support groups, community outreach services, and facilitated workshops in Alameda County with the aim to enhance the mental health and overall well-being of the LGBTQIA+ and QTBIPOC…

11
The Multicultural Center of Marin

We connect community members to advocate for social and environmental justice for all to thrive. We accomplish our mission through the provision of services in the areas of Community Resilience, Youth & Families, Basic Needs Support, and…

Human Services
12
Nami Santa Barbara County

Nami provides advocacy, education, support, public awareness so all affected by mental illness can live better lives.

Health

For reference, the grantee most central to the portfolio’s shape is StarVista and the most unlike its peers is Namaste Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

04the grantee network

11 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 20172025, not grant rows in a single year — so this will not match the grant count on the cover.

0
Load-bearing (≥25% of a budget)
2
Early backer (in before they grew)
11/11
Grantees still filing
6/11
Grew since you first funded

Where your money sits — by cause, then by grantee

San Mateo County Community Colleges Foundation — $165,874 · EducationSan Mateo County Community Colleges FoundationCalifornia Clubhouse DBA Aspire House — $20,000 · HealthCalifornia Clubho…ONE LIFE COUNSELING CENTER — $20,000 · HealthONE LIFE COUNSELI…MENTAL HEALTH ASSOCIATION OF SAN MATEO COUNTY — $10,500 · HealthMENTAL HEALTH ASS…NAMASTE FOUNDATION — $28,000 · OtherNAMASTE FOUNDAT…NAMI San Mateo County — $11,000 · OtherNAMI San Mateo …THE LESLEY FOUNDATION — $7,000 · OtherTHE LESLEY FOUN…StarVista — $30,000 · Human ServicesStarVistaSan Mateo Police Activities League Inc — $16,405 · Youth DevelopmentPENINSULA HUMANE SOCIETY & SPCA — $12,500 · AnimalsREDWOOD CITY ART CENTER ART BIAS — $12,500 · Arts & Culture
Education$165,874Health$50,500Other$46,000Human Services$30,000Youth Development$16,405Animals$12,500Arts & Culture$12,500

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$1.0M$10Mgrantee revenue →↑ your share of their budgetSan Mateo County Community Colleges Foundation — $165,874 over 7y, 0.9% of budgetStarVista — $30,000 over 1y, 0.2% of budgetNAMASTE FOUNDATION — $28,000 over 2y, 5.2% of budgetCalifornia Clubhouse DBA Aspire House — $20,000 over 1y, 1.9% of budgetONE LIFE COUNSELING CENTER — $20,000 over 1y, 0.3% of budgetSan Mateo Police Activities League Inc — $16,405 over 4y, 0.9% of budgetPENINSULA HUMANE SOCIETY & SPCA — $12,500 over 1y, 0.0% of budgetREDWOOD CITY ART CENTER ART BIAS — $12,500 over 1y, 4.6% of budgetNAMI San Mateo County — $11,000 over 1y, 1.7% of budgetMENTAL HEALTH ASSOCIATION OF SAN MATEO COUNTY — $10,500 over 1y, 0.1% of budgetTHE LESLEY FOUNDATION — $7,000 over 1y, 0.1% of budget
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.

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.

Atkinson FoundationCA19.9× affinity7 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Atkinson Foundation · Gordon E and Betty I Moore Foundation · Second Harvest of Silicon Valley · Bothin Foundation · Silicon Valley Community Foundation · American Endowment Foundation · American Online Giving Foundation Inc · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · Donor Advised Charitable Giving Inc · The Bank of America Charitable Foundation 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 San Mateo Rotary 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.

2024
202122232425
no gov · 00%1%3%6%10%your share of their income ↑0%1%3%4%5%share of the org’s income from government
    no gov moneyreceives it· size = income
    0get no government money at all
    5report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–5%
    typical government reliance, FY2025

    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.

    On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 11 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears. How we build these →

    Generated from your IRS Form 990 e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

    Source object · view filing

    More from the funding graph