Wei Laboratories Foundation
Wei Laboratories Foundation is a private foundation, based in Saratoga, CA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $256K in total assets. In 2025, it awarded 2 grants totaling $55K. Net investment income was $47K.
Wei Laboratories Foundation at a glance
In short: Wei Laboratories Foundation gave $55K across 2 grants in 2025 (avg $28K), mostly in California. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $55,000
- Grants made (2025)
- 2
- Average grant
- $27,500
- Median grant
- $27,500
- Total assets
- $255,716
- -4.2% vs 2024
- Primary geography
- California (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Wei Laboratories Foundation funds
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2025
The largest 2025 recipient was Claremont McKenna College ($35K). Together the top 2 received $55K.
Grant Size Distribution
7 grants across all recorded years
The most common grant size was under $50K: 7 grants of 7 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 2 itemized grants.
States
Cities
How Wei Laboratories Foundation gives
- Giving grew 267% from 2022 to 2025. Method
- In 2025 it paid out 502% of its IRS minimum distribution (the 5% rule). 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 2025, annual grant giving ranged from $15K (2022) to $55K (2025). In 2025 it made 2 grants totaling $55K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Claremont McKenna College Claremont, CA | Donations | $35,000 |
| Thursday Gathering Saratoga, CA | Donations | $20,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $255,716 | $47,039 | $59,595 | $55,000 | 2 | $56,658 | $47,039 | $11,280 |
| 2024 | $266,947 | $2,001 | $1,698 | — | — | $1,615 | $1,918 | $11,483 |
| 2023 | $266,644 | $642 | $19,868 | $15,000 | 1 | $17,429 | — | $11,404 |
| 2022 | $295,870 | $47,104 | $22,376 | $15,000 | 2 | $16,399 | $42,446 | $17,707 |
| 2021 | $447,844 | $9,894 | $41,167 | $20,000 | 2 | — | — | $22,638 |
| 2020 | $478,869 | $41,124 | $14,700 | — | — | — | $31,807 | $19,692 |
| 2019 | $371,809 | $-2,064 | $14,443 | — | — | — | — | $18,702 |
Under IRS private-foundation payout rules, Wei Laboratories Foundation reported a distributable amount of $11K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Wei Laboratories Foundation is led by Jeffrey Haoran Wei, President on every filing since 2019; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Jeffrey Haoran Wei
President
On filings since 2019
2 hrs/week
No compensation reported
Sarah Shuying Li
Secretary
On filings since 2019
2 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "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 Laboratories Foundation
How much does Wei Laboratories Foundation give each year?
Wei Laboratories Foundation gave $55K across 2 grants in 2025, according to its 2025 IRS Form 990-PF.
How large is Wei Laboratories Foundation?
Wei Laboratories Foundation reported $256K in total assets on its 2025 IRS Form 990-PF. It paid out $57K in qualifying distributions that year, against a required minimum of $11K (roughly 5% of its investment assets).
Where does Wei Laboratories Foundation operate?
Wei Laboratories Foundation has awarded grants in California.
What is Wei Laboratories Foundation's EIN?
Wei Laboratories Foundation's EIN (Employer Identification Number) is 26-1460904. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS March 12, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS August 4, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS March 14, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS March 7, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS March 2, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS February 28, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS March 9, 2026)
- IRS filings on file for fiscal years 2019–2025
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