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Wei Brothers Foundation at a glance

· Private foundation

Wei Brothers Foundation

Its FY2026 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$109k
Granted FY2026still arriving
4
Grants FY2026still arriving
1
States reached
$63k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2026.

Education$116kRecreation & Sports$18kYouth Development$2kHealth$1k
02FY2026 · 4 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2026

  • Under $10k1 grant · $310
  • $10k–50k2 grants · $45k
  • $50k–250k1 grant · $63k
$30,000
Median grant
1
States reached
$1.3M
Total assets
Largest grants
RecipientAmount
Individual grant recipient$63,000
UC DAVIS FOUNDATION$30,000
Palo Alto Swim Club$15,431
Palo Alto Hign School PTSA$310
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Dollar for dollar, its grants (FY17–26) land where the poverty rate runs at 9%, against an area that typically sits at 6%. 100% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 6%Palo Alto Swim Club: $15k → 8%UC DAVIS FOUNDATION: $30k → 16%Palo Alto High School: $1k → 8%WALTER HAYS ELEMENTARY SCHOOL: $1k → 8%Palo Alto Swim Club: $1k → 8%Boy Scouts: $1k → 8%Palo Alto Swim and dive team: $500 → 8%Palo Alto Swim and dive team: $400 → 8%Boy Scouts: $375 → 8%WALTER HAYS ELEMENTARY SCHOOL: $360 → 8%Palo Alto High School: $310 → 8%Palo Alto Hign School PTSA: $310 → 8%Palo Alto Hign School PTSA: $310 → 8%Pacific Skyline Council: $250 → 8%Palo Alto Swim Club: $125 → 8%Boy Scouts: $50 → 8%JORDAN MIDDLE SCHOOL: $605 → 8%JORDAN MIDDLE SCHOOL: $450 → 8%Grenne Middle School: $350 → 8%JORDAN MIDDLE SCHOOL: $310 → 8%Green Middle School: $245 → 8%GREENE MIDDLE SCHOOL: $135 → 8%PAUSD PIE: $63k → 8%Palo Alto Partners in Education: $3k → 8%PAUSD PIE: $2k → 8%PAUSD PIE: $2k → 8%PAUSD PIE: $2k → 8%PALO ALTO UNIFIED SCHOOL DISTRICT P: $2k → 8%PALO ALTO UNIFIED SCHOOL DISTRICT P: $2k → 8%PAUSD PIE: $2k → 8%PAUSD PIE: $1k → 8%FOUNDATION FOR RESEARCH PREVENTION: $1k → 8%AQUATICS BOOSTER CLUB: $500 → 8%AQUATICS BOOSTER CLUB: $200 → 8%AQUATICS BOOSTER CLUB: $54 → 8%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

74%of every dollar goes to organizations it has funded before.
$102k · 10 repeat orgs$35k to everyone else

Grantees it renews have grown median revenue +15% since the first grant, against -6% for those funded once.

10 repeat relationships: 3 still active in FY2026, 7 since wound down; 1 grantees were first funded in FY2026 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

10
9

Total granted

$102k
$5k

Median revenue growth · since first grant

+15%
-6%

Still filing today

40%
33%

New vs renewed · share of each year

In FY2026, 72% of grant dollars renewed an existing relationship; $30k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25’26
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25’26
EducationRecreation & SportsInternationalOther
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.

Backed again, and grew

  • IG
    Individual grant recipient
    6× · 2020–2026 · $73k
  • PA
    PALO ALTO SWIM CLUB
    3× · 2023–2026 · $17k · revenue +15%
  • PA
    PALO ALTO UNIFIED SCHOOL DISTRICT P
    2× · 2017–2018 · $4k

Funded once

  • PA
    PALO ALTO PARTNERS IN EDUCATION
    one grant, 2023 · $3k · revenue -2%
  • FF
    FOUNDATION FOR RESEARCH PREVENTION
    one grant, 2018 · $1k
  • GM
    Grenne Middle School
    one grant, 2020 · $350
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.

04Its field

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.

1
Los Altos High School Ptsa

To support the students, staff, parents and community of the Los Altos High School district

—
2
Palo Alto H S Sports Booster Club

To support the athletic programs

Education
3
Los Alamitos High School Water Polo and Swimming

To provide charity through the promotion of high school water polo and swimming in Los Alamitos, California through sponsoring the Los Alamitos High School teams.

Philanthropy
4
Almond Elementary School Pta

The Almond Elementary School PTA is a volunteer organization working on behalf of students and staff. The PTA works to improve the education, health and welfare of all children and youth.

—
5
Pta California Congress of Pta Alvarado School

The mission of the California State PTA is to positively impact the lives of all children and families by representing our members and empowering and supporting them with skills in advocacy, leadership and communication.

—
6
Portola Pep Squad Boosters

Portola Pep Squad Boosters is organized to support the students, parents, teachers, and administrative staff of The Portola High School Pep Squad by raising funds, conducting events, and recruiting volunteers.

Education
7
Oak Avenue School Pta

The Oak Avenue School PTA is an organization devoted to supporting the students, staff and parents of the Oak Avenue School community. Support includes funding for technology, capital improvements and supplies.

—
8
Pta California Congress of Parents Teachers & Students Inc

The PTA organized and supported school-related teaching clubs and enrichment activities during the year. Fees collected from participants were used exclusively to cover program expenses for these student activities.

—
9
Walnut Creek Aquabears Swim Team

Provide competitive swim instruction to children ages 5 to 19. Instruction is after school and on weekends. Swimmers compete in local, regional, and national meets. Walnut Creek Aquabears is a member club of USA Swimming, our sport's…

—
10
Palo Alto High School Robotics Boosters Club

To provide robotics educational programs for the Palo Alto High School students, so students can design robots and go to robotics competitions as well as other educational and charitable activities associated with this goal.

Education
11
Pta California Congress of Parents Teach Menlo-Atherton High School Pta

Support students, assist parents and teachers.

—
12
Palo Verde Elementary School Pta

to support students, staff and parents

—
How this is measured
The grantee most central to the portfolio’s shape is Palo Alto Partners in Education; the most unlike its peers is Overseas China Education 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

8 grantees tracked through their own filings, 2017–2026.

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 2026, not grant rows in a single year, so this will not match the grant count on the cover. 8 of the 20 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.

0
Load-bearing (≥25% of a budget)
2
Early backer (in before they grew)
8/8
Grantees still filing
3/8
Grew since first funded

Where the money sits, by cause and then by grantee

Individual grant recipient: $73,050 · OtherIndividual grant recipientPALO ALTO UNIFIED SCHOOL DISTRICT P: $4,000 · Other+12 more: $9,744 · Other+12 moreTHE UC DAVIS FOUNDATION: $30,000 · EducationTHE UC DAVIS FOUNDATIONPALO ALTO PARTNERS IN EDUCATION: $2,700 · EducationPALO ALTO PARTNERS IN EDUCA…+1 more: $140 · EducationPALO ALTO SWIM CLUB: $16,710 · Recreation & SportsPALO ALTO SWIM…AQUATICS BOOSTER CLUB: $754 · Recreation & SportsAMIGOS DE LAS AMERICAS: $110 · International
Other$86,794Education$32,840Recreation & Sports$17,464International$110

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0Mgrantee revenue →↑ funder's share of their budgetPALO ALTO SWIM CLUB: $16,710 over 3y, 0.1% of budgetPALO ALTO PARTNERS IN EDUCATION: $2,700 over 1y, 0.1% of budgetWalter Hays Elementary School PTA: $1,549 over 2y, 0.6% of budgetAQUATICS BOOSTER CLUB: $754 over 3y, 5.5% of budgetPalo Alto High School PTSA: $620 over 2y, 0.1% of budgetOVERSEAS CHINA EDUCATION FOUNDATION: $140 over 1y, 0.0% of budgetAMIGOS DE LAS AMERICAS: $110 over 1y, 0.1% of budget
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 THE UC DAVIS FOUNDATION ↗
  • Who funds PALO ALTO SWIM CLUB ↗
  • Who funds PALO ALTO PARTNERS IN EDUCATION ↗
  • Who funds Walter Hays Elementary School PTA ↗
  • Who funds AQUATICS BOOSTER CLUB ↗
  • Who funds Palo Alto High School PTSA ↗
  • Who funds OVERSEAS CHINA EDUCATION FOUNDATION ↗
  • Who funds AMIGOS DE LAS AMERICAS ↗

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.

The Intuit FoundationAmerican Online Givin…Donor Advised Charita…Amazonsmile Foundation
The Intuit FoundationCA15.5× affinity5 shared granteesties to 3 of 3Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Intuit Foundation · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Amazonsmile Foundation

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.

How much its grantees rely on government

Each dot is one organization Wei Brothers Foundation funds: left to right is the share of its income from government, bottom to top the share from Wei Brothers Foundation. Bigger dots raise more.

2023
’20’21’22’23’24’25
no gov · 00%0%1%3%5%funder's 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
    0rely on government for over half their income
    ⤢ axis zoomed · 0–5%
    typical government reliance, FY20–25
    How this is measured
    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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.

    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 20 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-PF e-file return for fiscal year 2026, released 2026. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Source object · view filing

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    More from the funding graph

    The unnamed billions
    grants reported with no recipient in the public record
    The regranting layer
    51% of grant dollars land in the regranting layer
    The DAF merry-go-round
    $9.7B circulates between donor-advised funds
    The endowment market
    who holds foundation money, and what just moved
    The camps
    funders cluster by geography, not ideology
    By state
    where grant money is based, and what stays home