Weng Family Foundation
Weng Family Foundation is a private foundation, based in Wilmington, DE. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $5.3M in total assets. In 2024, it awarded 9 grants totaling $337K. Net investment income was $16K.
Weng Family Foundation at a glance
In short: Weng Family Foundation gave $337K across 9 grants in 2024 (avg $37K), mostly in California. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $337,000
- -4.8% vs 2023
- Grants made (2024)
- 9
- +0.0% vs 2023
- Average grant
- $37,444
- -4.8% vs 2023
- Median grant
- $20,000
- Total assets
- $5,296,204
- -12.3% vs 2023
- Primary geography
- California (80% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated September 2026.
Who Weng Family Foundation funds
How this funder distributes its grants
Top Recipients
Top 7 recipients in 2024
The largest 2024 recipient was Robert Louis Stevenson School ($250K across 2 grants). Together the top 7 received $337K.
Grant Size Distribution
36 grants across all recorded years
The most common grant size was under $50K: 27 grants of 36 (75%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2024 grant dollars across all 9 itemized grants.
Cities
How Weng Family Foundation gives
- Giving grew 72% from 2021 to 2024. Method
- In 2024 it paid out 85% 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 2020 to 2024, annual grant giving ranged from $17K (2020) to $354K (2023). In 2024 it made 9 grants totaling $337K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Robert Louis Stevenson School Pebble Beach, CA | General & Unrestricted | $200,000 |
| Robert Louis Stevenson School Pebble Beach, CA | Fund for Math, Science, and Engineering Center | $50,000 |
| Bank of America Charitable Gift Fund Boston, MA | General & Unrestricted | $24,000 |
| George Washington University Washington, DC | Lin Weng Graduate Scholarship Fund | $20,000 |
| George Washington University Washington, DC | Lin Weng Undergraduate Scholarship Fund | $20,000 |
| Youth on Course Monterey, CA | BHCC SGA Fund | $11,000 |
| Blackhawk Womens Charitable Giving Danville, CA | General & Unrestricted | $5,000 |
| Hers Breast Cancer Foundation Fremont, CA | General & Unrestricted | $5,000 |
| National Multiple Sclerosis Society Denver, CO | Bike MS Ride Fund | $2,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $5,296,204 | $-531,541 | $392,353 | $337,000 | 9 | $356,981 | $15,790 | $417,993 |
| 2023 | $6,042,055 | $373,700 | $402,400 | $354,030 | 9 | $373,620 | $443,232 | $359,217 |
| 2022 | $6,050,464 | $-35,952 | $387,433 | $336,792 | 7 | $355,446 | $58,175 | $368,420 |
| 2021 | $6,450,033 | $2,077,599 | $239,531 | $195,500 | 7 | $211,909 | $178,126 | $362,712 |
| 2020 | $4,584,792 | $638,445 | $105,166 | $16,650 | 4 | — | $188,623 | $240,905 |
Under IRS private-foundation payout rules, Weng Family Foundation reported a distributable amount of $418K for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Weng Family Foundation is led by Lily Z Weng, Co- President, Director & Treasurer on every filing since 2020; none of the 2 officers listed in 2024 report compensation.
Officers on the 2024 filing
Lily Z Weng
Co- President, Director & Treasurer
On filings since 2020
1 hr/week
No compensation reported
Lin Weng
Director, Co- President & Secretary
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2024. "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 Weng Family Foundation
How much does Weng Family Foundation give each year?
Weng Family Foundation gave $337K across 9 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $354K across 9 grants.
What is Weng Family Foundation's typical grant size?
Weng Family Foundation's median grant in 2024 was $20,000, and its average grant was $37,444, across 9 grants on its 2024 IRS Form 990-PF.
Where does Weng Family Foundation give grants?
Weng Family Foundation gives mostly in California: 80% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The next largest states were District of Columbia (12%) and Massachusetts (7%). The most frequent recipient cities were Pebble Beach, CA (2 grants) and Washington, DC (2 grants).
Does Weng Family Foundation give general operating support?
Yes: 44% of Weng Family Foundation's 2024 grants with a stated purpose (4 of 9) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are Weng Family Foundation's largest grantees?
Weng Family Foundation's largest 2024 grantees include Robert Louis Stevenson School ($250,000 across 2 grants), George Washington University ($40,000 across 2 grants) and Bank of America Charitable Gift Fund ($24,000), according to its 2024 IRS Form 990-PF. Together they received 93% of its itemized 2024 grant dollars.
How large is Weng Family Foundation?
Weng Family Foundation reported $5.3M in total assets on its 2024 IRS Form 990-PF. It paid out $357K in qualifying distributions that year, against a required minimum of $418K (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 Weng Family Foundation's EIN?
Weng Family Foundation's EIN (Employer Identification Number) is 84-2794821. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
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