International PNH Interest Group
International PNH Interest Group is a private foundation focused on Medical Research, based in Altamonte Springs, FL. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $2.7M in total assets. In 2024, it made $112K in qualifying distributions.
International PNH Interest Group at a glance
- Total assets
- $2,664,950
- -54.8% vs 2023
- Revenue (2024)
- $385,280
- +7.3% vs 2023
- Qualifying distributions (2024)
- $111,985
- +61.5% vs 2023
- Expenses (2024)
- $185,488
- -52.9% vs 2023
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated September 2026.
Who International PNH Interest Group funds
How this funder distributes its grants
Grant Size Distribution
2 grants across all recorded years
The most common grant size was under $50K: 2 grants of 2 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
How International PNH Interest Group gives
- In 2024 it paid out 43% 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 2022, annual grant giving ranged from $5K (2020) to $5K (2022). In 2022 it made 1 grant totaling $5K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| American Society of Hematology Washington, DC | 2 Abstract Achievement Awards | $5,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Distributable Amount |
|---|---|---|---|---|---|---|---|
| 2024 | $2,664,950 | $385,280 | $185,488 | — | — | $111,985 | $261,884 |
| 2023 | $5,901,776 | $358,957 | $393,553 | — | — | $69,334 | $389,569 |
| 2022 | $3,106,141 | $187,295 | $180,372 | $5,000 | 1 | $88,348 | $19,493 |
| 2021 | $385,337 | $100,000 | $179,565 | — | — | $44,372 | $21,072 |
| 2020 | $464,902 | $99,982 | $30,362 | $5,000 | 1 | — | $22,419 |
Under IRS private-foundation payout rules, International PNH Interest Group reported a distributable amount of $262K for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
International PNH Interest Group is led by Antonio M. Risitano MD PhD, President since 2023 (on filings since 2020); none of the 14 officers listed in 2024 report compensation.
Officers on the 2024 filing
Antonio M. Risitano MD PhD
President
Secretary → President & Chair, 2022
President & Chair → President, 2023
On filings since 2020
1 hr/week
No compensation reported
Dawn McKnight
Executive Director
On filings since 2023
1 hr/week
No compensation reported
Charles J. Parker MD
Director
On filings since 2020
1 hr/week
No compensation reported
Jun-ichi Nishimura
Director
On filings since 2020
1 hr/week
No compensation reported
Neal S. Young MD
Director
On filings since 2020
1 hr/week
No compensation reported
Petra Muus
Director
On filings since 2020
1 hr/week
No compensation reported
Russell E. Ware MD PhD
Director
On filings since 2020
1 hr/week
No compensation reported
Richard Kelly
Director
On filings since 2022
1 hr/week
No compensation reported
Kohei Hosokawa
Director
On filings since 2023
1 hr/week
No compensation reported
Bing Han
Director
New on the 2024 filing
1 hr/week
No compensation reported
Louise Arnold
Director
New on the 2024 filing
1 hr/week
No compensation reported
Rodrigo Calado
Director
New on the 2024 filing
1 hr/week
No compensation reported
Jeff Szer
Secretary
On filings since 2023
1 hr/week
No compensation reported
Regis Peffault de Latour
Treasurer
On filings since 2023
1 hr/week
No compensation reported
Former officers (4)
- Former: Jeff Szerbmedsc Mb Bs (2020–2022) — Secretary
- Former: Regis Peffault De Latour Mdphd (2020–2022) — Treasurer
- Former: Shinji Nakao MD PhD (2020–2022) — Director
- Former: Peter Hillmen Mb Chb PhD (2020–2021) — Chairman
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 International PNH Interest Group
How large is International PNH Interest Group?
International PNH Interest Group reported $2.7M in total assets on its 2024 IRS Form 990-PF. It paid out $112K in qualifying distributions that year, against a required minimum of $262K (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 International PNH Interest Group?
International PNH Interest Group is a private foundation focused on Medical Research, based in Altamonte Springs, FL. It holds $2.7M in total assets as of 2024.
Where does International PNH Interest Group operate?
International PNH Interest Group has awarded grants in District of Columbia.
What is International PNH Interest Group's EIN?
International PNH Interest Group's EIN (Employer Identification Number) is 26-1079735. 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
Live grants for the work International PNH Interest Group funds
Medical Research Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in International PNH Interest Group's focus areas in our free grants database
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