Wei Brothers Foundation
Wei Brothers Foundation is a private foundation, based in Palo Alto, CA. IRS filing data is available from 2021 through 2026. As of 2026, the organization holds $1.3M in total assets. In 2026, it awarded 4 grants totaling $109K.
Wei Brothers Foundation at a glance
In short: Wei Brothers Foundation gave $109K across 4 grants in 2026 (avg $27K), mostly in California. Source: 2026 IRS Form 990-PF.
- Annual giving (2026)
- $108,741
- +5907.8% vs 2025
- Grants made (2026)
- 4
- +100.0% vs 2025
- Average grant
- $27,185
- +2903.9% vs 2025
- Median grant
- $22,716
- Total assets
- $1,275,170
- +2.5% vs 2025
- Primary geography
- California (100% of itemized 2026 grant dollars)
- Latest 990 filing
- Form 990-PF, 2026 View filing
Data from IRS Form 990-PF, 2026; updated September 2026.
Who Wei Brothers Foundation funds
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2026
The largest 2026 recipient was Uc Davis Foundation ($30K). Together the top 2 received $45K.
Organizations only. It also paid 2 grants to individuals ($63,310), which are not listed by name.
Grant Size Distribution
17 grants across all recorded years
The most common grant size was under $50K: 16 grants of 17 (94%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2026 grant dollars across all 4 itemized grants.
States
Cities
How Wei Brothers Foundation gives
- Giving grew 3170% from 2023 to 2026. Method
- In 2026 it paid out 88% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2026, annual grant giving ranged from $2K (2025) to $109K (2026). In 2026 it made 4 grants totaling $109K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| 2 grants to individuals Recipients not named | — | $63,310 |
| Uc Davis Foundation Davis, CA | Gereral Support to the Educational Institution | $30,000 |
| Palo Alto Swim Club Palo Alto, CA | To help fund raising for team competation | $15,431 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2026 | $1,275,170 | $156,170 | $125,051 | $108,741 | 4 | $108,741 | — | $124,119 |
| 2025 | $1,244,051 | $15,238 | $5,425 | $1,810 | 2 | $106,810 | $15,238 | $94,829 |
| 2024 | $1,234,238 | $20,808 | $7,894 | $4,214 | 5 | $4,214 | — | — |
| 2023 | $1,221,324 | $924,912 | $5,289 | $3,325 | 3 | $3,325 | — | — |
| 2022 | $301,726 | $706 | $4,005 | $2,695 | 3 | $2,695 | — | — |
| 2021 | $322,672 | $1,928 | $4,202 | $2,790 | 3 | — | — | — |
Under IRS private-foundation payout rules, Wei Brothers Foundation reported a distributable amount of $124K for 2026 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Wei Brothers Foundation is led by Jin Wei, CEO on every filing since 2021; none of the 2 officers listed in 2026 report compensation.
Officers on the 2026 filing
Jin Wei
CEO
On filings since 2021
1 hr/week
No compensation reported
Mabel Cheng
CFO
On filings since 2021
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2021–2026. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Wei Brothers Foundation
How much does Wei Brothers Foundation give each year?
Wei Brothers Foundation gave $109K across 4 grants in 2026, according to its 2026 IRS Form 990-PF. In 2025 it gave $2K across 2 grants.
What is Wei Brothers Foundation's typical grant size?
Wei Brothers Foundation's median grant in 2026 was $22,716, and its average grant was $27,185, across 4 grants on its 2026 IRS Form 990-PF.
Where does Wei Brothers Foundation give grants?
Wei Brothers Foundation gives mostly in California: 100% of the grant dollars itemized on its 2026 IRS Form 990-PF went to recipients there.
Does Wei Brothers Foundation give general operating support?
Not in 2026: none of the 4 grants with a stated purpose on Wei Brothers Foundation's 2026 IRS Form 990-PF were described as general or operating support.
How large is Wei Brothers Foundation?
Wei Brothers Foundation reported $1.3M in total assets on its 2026 IRS Form 990-PF. It paid out $109K in qualifying distributions that year, against a required minimum of $124K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
What is Wei Brothers Foundation's EIN?
Wei Brothers Foundation's EIN (Employer Identification Number) is 45-2080922. IRS Form 990 filing data is available on this page for 2021–2026.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2021 (received by the IRS July 1, 2021)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS January 27, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS August 3, 2023)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS September 13, 2024)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS December 15, 2025)
- Added Form 990-PF for fiscal year 2026 (received by the IRS June 24, 2026)
- IRS filings on file for fiscal years 2021–2025
Explore Open Grants
Browse active grant opportunities in Wei Brothers Foundation's focus areas in our free grants database
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