The Wo Foundation
The Wo Foundation is a private foundation, based in Houston, TX. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $3.4M in total assets. In 2025, it awarded 1 grant totaling $265K. Net investment income was $91K.
The Wo Foundation at a glance
In short: The Wo Foundation gave $265K across 1 grant in 2025 (avg $265K). Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $265,000
- +96.3% vs 2024
- Grants made (2025)
- 1
- +0.0% vs 2024
- Average grant
- $265,000
- +96.3% vs 2024
- Median grant
- $265,000
- Total assets
- $3,411,386
- -5.0% vs 2024
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who The Wo Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was Centre Alcibiade Pommayrac ($265K).
Grant Size Distribution
4 grants across all recorded years
The most common grant size was in the $250–500K range: 3 grants of 4 (75%).
How The Wo Foundation gives
- Giving fell 30% from 2022 to 2025. Method
- In 2025 it paid out 95% 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 2025, annual grant giving ranged from $135K (2024) to $380K (2022). In 2025 it made 1 grant totaling $265K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Centre Alcibiade Pommayrac | General Support | $265,000 |
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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 | $3,411,386 | $106,188 | $284,120 | $265,000 | 1 | $267,676 | $90,810 | $282,433 |
| 2024 | $3,589,318 | $79,279 | $149,861 | $135,000 | 1 | $135,000 | $65,168 | $268,056 |
| 2023 | $3,659,900 | $70,468 | $18,039 | — | — | — | $53,924 | $241,900 |
| 2022 | $3,607,471 | $66,072 | $398,241 | $380,000 | 1 | $384,314 | $52,859 | $240,588 |
| 2021 | $3,939,640 | $184,224 | $392,509 | $375,000 | 1 | $378,878 | $172,220 | $261,945 |
| 2020 | $4,147,925 | $136,720 | $403,884 | $380,000 | 1 | — | $119,912 | $249,129 |
Under IRS private-foundation payout rules, The Wo Foundation reported a distributable amount of $282K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Wo Foundation is led by Marguerite Rossillon, Director & President since 2022 (on filings since 2020); none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
Marguerite Rossillon
Director & President
Director → Director & Vice President-From, 2021
Director & Vice President-From → Director & President, 2022
On filings since 2020
0.1 hrs/week
No compensation reported
Molly K. Wurzer
Director & Secretary-Treas.
On filings since 2020
0.1 hrs/week
No compensation reported
Suzanne Rossillon
Director
On filings since 2020
0 hrs/week
No compensation reported
Louise Chiapolino
Director & Vice President
Director - From → Director & Vice President, 2022
On filings since 2021
0 hrs/week
No compensation reported
Former officers (2)
- Former: Denise M. Stoner (2020–2021) — Director & Vice President - to
- Former: Francois Letaconnoux (2020–2021) — Director & President
Data from IRS Form 990 filings, 2020–2025. "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 The Wo Foundation
How much does The Wo Foundation give each year?
The Wo Foundation gave $265K across 1 grant in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $135K across 1 grant.
How large is The Wo Foundation?
The Wo Foundation reported $3.4M in total assets on its 2025 IRS Form 990-PF. It paid out $268K in qualifying distributions that year, against a required minimum of $282K (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 The Wo Foundation's EIN?
The Wo Foundation's EIN (Employer Identification Number) is 45-3261841. IRS Form 990 filing data is available on this page for 2020–2025.
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 2020 (received by the IRS July 8, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 12, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 9, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 13, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 14, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 12, 2026)
- IRS filings on file for fiscal years 2020–2024
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Figures come from The Wo Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
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