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California · Public charity

San Mateo Rotary Foundation

Support porgrams for youth, educational opportunities and interantional exchagnes for students, teachers, and other professionals. "service above self"

$158k
Granted FY2025(still arriving)
4
Itemized grants FY2025
2
Organizations funded FY2024
100%
First-time grantees FY2024
Read the full brief
Itemized, FY2025
$84k
The rest is grants the schedule does not break out
Median grant, FY2025
$12,500
Largest grant, FY2025
$51,200
Organizations funded a year
1 to 5
FY2018 to FY2024
States reached, FY2025
1
Total assets, FY2025
$2.0M

How open it is to new grantees

In FY2024, 100% of the organizations San Mateo Rotary Foundation funded were first-time grantees, receiving 100% of its grant dollars.

New vs renewed · share of each year

In FY2024, 0% of grant dollars renewed an existing relationship; $27k went to new ones.

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

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

’18’19’20’21’22’23’24
HealthHuman ServicesOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving4$84k50%
FY20242$27k100%
FY20231$30k100%
FY20225$86k80%
FY20211$17k0%
FY20202$20k0%
FY20192$23k0%
FY20182$23k0%
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

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

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 11 grantees
All grantees of San Mateo Rotary Foundation by total granted
GranteeTotal grantedYearsShare of their budget
San Mateo County Community Colleges Foundation$165,87471%
StarVista$30,00010%
Namaste Foundation$28,00025%
One Life Counseling Center$20,00010%
California Clubhouse DBA Aspire House$20,00012%
San Mateo Police Activities League Inc$16,40541%
Redwood City Art Center Art Bias$12,50015%
Peninsula Humane Society & Spca$12,50010%
NAMI San Mateo County$11,00012%
Mental Health Association of San Mateo County$10,50010%
The Lesley Foundation$7,00010%

Where it is load-bearing

Each grantee by its size and the share of its budget San Mateo Rotary Foundation supplied at peak.

25%50%75%100%$1.0M$10Mgrantee revenue →↑ funder's 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 budgetOne Life Counseling Center: $20,000 over 1y, 0.3% of budgetCalifornia Clubhouse DBA Aspire House: $20,000 over 1y, 1.9% of budgetSan Mateo Police Activities League Inc: $16,405 over 4y, 0.9% of budgetRedwood City Art Center Art Bias: $12,500 over 1y, 4.6% of budgetPeninsula Humane Society & Spca: $12,500 over 1y, 0.0% 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

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 11.

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.

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

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare San Mateo Rotary Foundation with peer funders

About San Mateo Rotary Foundation

How much does San Mateo Rotary Foundation give?
San Mateo Rotary Foundation reported 4 itemized grants totaling $84,200, out of $157,700 in total grant expense reported on the return in its FY2025 IRS filing. It funded between 1 and 5 organizations a year over FY2018 to FY2024.
What does San Mateo Rotary Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Education (50%), Health (18%), Human Services (9%).
Who are San Mateo Rotary Foundation's largest grantees?
By total granted over FY2017 to FY2025: San Mateo County Community Colleges Foundation ($166k), StarVista ($30k), Namaste Foundation ($28k).
Does San Mateo Rotary Foundation fund new organizations?
In FY2024, 100% of the organizations it funded were first-time grantees.
Which funders back the same organizations as San Mateo Rotary Foundation?
Its strongest co-funders, measured against what their size predicts, include Atkinson Foundation, Gordon E and Betty I Moore Foundation, Second Harvest of Silicon Valley.
Where is San Mateo Rotary Foundation based?
San Mateo Rotary Foundation is based in CA.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 11 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its 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.

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

Source object · view filing

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