Nonprofit · EIN 22-2532651
INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED
Tax-exempt · RESTON, VA 20191
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $152,339 | $146,667 | $5,672 | $261,584 | $46,772 | $214,812 |
| December 31, 2024 | 990-EZ | $100,933 | $100,930 | $3 | $238,115 | $40,511 | $197,604 |
| December 31, 2023 | 990-EZ | $112,983 | $94,612 | $18,371 | $232,553 | $37,963 | $194,590 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $72,033
- Membership dues
- $63,884
- Program service revenue
- $6,550
- Investment income
- $7,825
- Net gain from sales of assets
- $2,047
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $22,900
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fees and payments to contractors
- $11,236
- Occupancy
- $77
- Printing, publications and postage
- $1,041
- Other expenses
- $111,413
- Program services (functional)
- $90,379
Balance sheet and other
- Total assets, start of year
- $238,115
- Total assets, end of year
- $261,584
- Total liabilities, end of year
- $46,772
- Net assets, end of year
- $214,812
- Cash, savings and investments
- $258,373
- Gross receipts
- $168,971
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990-EZ for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Dr Martin F Wilks | President | 1 | $0 |
| Dr Felix Carvalho | President-Elect | 1 | $0 |
| Dr Flemming R Cassee | Secretary-General | 1 | $0 |
| Dr Mary Ellen Cosenza | Treasurer | 1 | $0 |
| Dr Bette Meek | Vice President | 1 | $0 |
| Dr Maria Fernanda Cavieres PhD | Director | 1 | $0 |
| Dr Maria Lucia Zaidan Dagli | Director | 1 | $0 |
| Dr Akihiko Hirose | Director | 1 | $0 |
| Dr Chan Kok Meng | Director | 1 | $0 |
| Dr Heather M Wallace | Director | 1 | $0 |
| Catherine Lamoureux | Executive Director | 10 | $0 |
990-EZ for the year ended December 31, 2024: 11 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Dr Jose Manautou | President | 1 | $0 |
| Dr Martin F Wilks | President-Elect | 1 | $0 |
| Dr Emanuela Corsini | Secretary-General | 1 | $0 |
| Dr Mary Ellen Cosenza | Treasurer | 1 | $0 |
| Dr Ilona Jaspers | Vice President | 1 | $0 |
| Dr Henk Van Loveren | Director | 1 | $0 |
| Dr Maria Lucia Zaidan Dagli | Director | 1 | $0 |
| Dr Akihiko Hirose | Director | 1 | $0 |
| Dr Chan Kok Meng | Director | 1 | $0 |
| Dr Heather M Wallace | Director | 1 | $0 |
| Catherine Lamoureux | Executive Director | 10 | $0 |
990-EZ for the year ended December 31, 2023: 11 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Dr Jose Manautou | President | 1 | $0 |
| Dr Martin F Wilks | President-Elect | 1 | $0 |
| Dr Emanuela Corsini | Secretary-General | 1 | $0 |
| Dr Mary Ellen Cosenza | Treasurer | 1 | $0 |
| Dr Ilona Jaspers | Vice President | 1 | $0 |
| Dr Henk Van Loveren | Director | 1 | $0 |
| Dr Maria Lucia Zaidan Dagli | Director | 1 | $0 |
| Dr Akihiko Hirose | Director | 1 | $0 |
| Dr Chan Kok Meng | Director | 1 | $0 |
| Dr Heather M Wallace | Director | 1 | $0 |
| Rachel Frohberg | Executive Director | 10 | $0 |
Address and contacts
- Address (IRS master file)
- 11190 SUNRISE VALLEY DR STE 300, RESTON, VA 20191-4375
- In care of
- % CATHERINE LAMOUREUX
- Signed the 990-EZ
- Catherine Lamoureux, Executive Director
- Phone
- (703) 438-3103
- Website
- WWW.IUTOX.ORG
Mission
IUTOX's mission is to improve human health through the science and practice of toxicology world-wide. The Organization provides a forum for review of concerns and developments in toxicology; conducts workshops and seminars on an annual basis; and sponsors a Congress on Toxicology on a triennial basis at locations throughout the world.
Program accomplishments
- Executive Committee - Conducts IUTOX's business and organizes its programs.Expenses $30,684
- ICT-The International Congress of Toxicology (ICT) is a triennial global academic event offering the opportunity to learn the latest developments in toxicological science and regulation through general scientific sessions and continuing education classes. The ICT 17th was held on October 15-18, 2025 in Beijing China. It was hosted by Chinese Society of Toxicology.Expenses $48,402
- RASS-Risk Assessment Summer School-IUTOX sponsors advanced training for selected postgraduate and postdoctoral toxicologists in risk assessment, through the Risk Assessment Summer Schools (RASS). RASS was held in February 2025 in Sao Paulo Brazil.Expenses $11,293
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-EZ on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-EZ on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-EZ on file |
IRS record
- EIN
- 22-2532651
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1985
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Voluntary health associations and medical disciplines (G900)
- Assets (IRS master file)
- $261,584
- Income (IRS master file)
- $168,971
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $152,339 | $146,667 | $261,584 | XML |
| 990-EZ | December 2024 | $100,933 | $100,930 | $238,115 | XML |
| 990-EZ | December 2023 | $112,983 | $94,612 | $232,553 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 22-2532651).
Questions about INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED
- What is the EIN of INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED?
- The employer identification number (EIN) of INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED is 22-2532651.
- Is INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1985.
- Are donations to INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED last file with the IRS?
- The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
- Who are the officers and directors of INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED?
- The 990-EZ for the year ended December 31, 2025 lists 11 people; 0 received compensation from the organization.
- How much revenue does INTERNATIONAL UNION OF TOXICOLOGY INCORPORATED have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $152,339, expenses of $146,667 and total assets of $261,584 at year end.
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All nonprofits in RESTON · Virginia · Voluntary health associations and medical disciplines