Nonprofit · EIN 42-1517735
INTERNATIONAL SOCIETY FOR BAYESIAN ANALYSIS
Tax-exempt · ELLICOTT CITY, MD 21042
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $456,651 | $252,442 | $204,209 | $970,827 | $0 | $970,827 |
| December 31, 2024 | 990 | $576,774 | $478,160 | $98,614 | $766,618 | $0 | $766,618 |
| December 31, 2023 | 990 | $139,782 | $116,575 | $23,207 | $668,004 | $0 | $668,004 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $438,848
- of which government grants
- $227,342
- Membership dues
- $211,356
- Program service revenue
- $2,692
- Investment income
- $15,061
- Royalties
- $50
- Other revenue
- $50
Expenses
- Grants and similar amounts paid
- $44,450
- Other salaries and wages
- $31,250
- Salaries, compensation and benefits (total)
- $31,250
- Professional fundraising fees
- $0
- Accounting fees
- $2,868
- Travel
- $47,590
- Program services (functional)
- $183,058
- Management and general (functional)
- $69,384
Balance sheet and other
- Total assets, start of year
- $766,618
- Total assets, end of year
- $970,827
- Total liabilities, end of year
- $0
- Net assets, end of year
- $970,827
- Publicly traded securities
- $904,100
- Gross unrelated business income
- $2,692
- Gross receipts
- $456,651
- Employees
- 0
- Year formed
- 1992
- State of legal domicile
- VA
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 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Antonio Canale | Director Trustee or director | 3 | $0 |
| Amy Harring | Past President Trustee or director, Officer | 0 | $0 |
| Aad Van Der Vaart | President Trustee or director, Officer | 0 | $0 |
| Michele Guingani | President Elect Trustee or director, Officer | 0 | $0 |
| Donatello Telesca | Executive Secretary Trustee or director, Officer | 0 | $0 |
| Daniele Durante | Director Trustee or director | 0 | $0 |
| Lucia Paci | Director Trustee or director | 0 | $0 |
| George Papadogeorgou | Director Trustee or director | 0 | $0 |
| Tamara Broderick | Director Trustee or director | 0 | $0 |
| Subhashis Ghosal | Director Trustee or director | 0 | $0 |
| Claire Gormley | Director Trustee or director | 0 | $0 |
| Matteo Ruggiero | Director Trustee or director | 0 | $0 |
| Julyan Arbel | Director Trustee or director | 0 | $0 |
| Thais Fonseca | Director Trustee or director | 0 | $0 |
| Sinead Williamson | Director Trustee or director | 0 | $0 |
7 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Li Ma | Director Trustee or director | 0 | $0 |
| Sara Wade | Director Trustee or director | 0 | $0 |
| Yanxun Xu | Treasurer Trustee or director, Officer | 2 | $0 |
| Mark Steel | Director Trustee or director | 1 | $0 |
| Francesco Denti | Director Trustee or director | 1 | $0 |
| Tony Pourmohamad | Director Trustee or director | 1 | $0 |
| Tommaso Rigon | Director Trustee or director | 1 | $0 |
990 for the year ended December 31, 2024: 22 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Antonio Canale | Director Trustee or director | 3 | $0 |
| Amy Harring | Past President Trustee or director, Officer | 0 | $0 |
| Aad Van Der Vaart | President Trustee or director, Officer | 0 | $0 |
| Michele Guingani | President Elect Trustee or director, Officer | 0 | $0 |
| Donatello Telesca | Executive Secretary Trustee or director, Officer | 0 | $0 |
| Daniele Durante | Director Trustee or director | 0 | $0 |
| Lucia Paci | Director Trustee or director | 0 | $0 |
| George Papadogeorgou | Director Trustee or director | 0 | $0 |
| Tamara Broderick | Director Trustee or director | 0 | $0 |
| Subhashis Ghosal | Director Trustee or director | 0 | $0 |
| Claire Gormley | Director Trustee or director | 0 | $0 |
| Matteo Ruggiero | Director Trustee or director | 0 | $0 |
| Julyan Arbel | Director Trustee or director | 0 | $0 |
| Thais Fonseca | Director Trustee or director | 0 | $0 |
| Sinead Williamson | Director Trustee or director | 0 | $0 |
| Li Ma | Director Trustee or director | 0 | $0 |
| Sara Wade | Director Trustee or director | 0 | $0 |
| Yanxun Xu | Treasurer Trustee or director, Officer | 2 | $0 |
| Mark Steel | Director Trustee or director | 1 | $0 |
| Francesco Denti | Director Trustee or director | 1 | $0 |
| Tony Pourmohamad | Director Trustee or director | 1 | $0 |
| Tommaso Rigon | Director Trustee or director | 1 | $0 |
990 for the year ended December 31, 2023: 22 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Sinead Williamson | Director Trustee or director | 0 | $0 |
| Li Ma | Director Trustee or director | 0 | $0 |
| Thais Fonseca | Director Trustee or director | 0 | $0 |
| Matteo Ruggiero | Director Trustee or director | 0 | $0 |
| Julyan Arbel | Director Trustee or director | 0 | $0 |
| Tony Pourmohamad | Director Trustee or director | 1 | $0 |
| Tommaso Rigon | Director Trustee or director | 1 | $0 |
| Francesco Denti | Director Trustee or director | 1 | $0 |
| Sara Wade | Director Trustee or director | 0 | $0 |
| Mark Steel | Director Trustee or director | 1 | $0 |
| Claire Gormley | Director Trustee or director | 0 | $0 |
| Lucia Paci | Director Trustee or director | 0 | $0 |
| Daniele Durante | Director Trustee or director | 0 | $0 |
| Antonio Canale | Director Trustee or director | 3 | $0 |
| Subhashis Ghosal | Director Trustee or director | 0 | $0 |
| Tamara Broderick | Director Trustee or director | 0 | $0 |
| George Papadogeorgou | Director Trustee or director | 0 | $0 |
| Aad Van Der Vaart | President Trustee or director, Officer | 0 | $0 |
| Amy Harring | Past President Trustee or director, Officer | 0 | $0 |
| Donatello Telesca | Executive Secretary Trustee or director, Officer | 0 | $0 |
| Yanxum Xu | Treasurer Trustee or director, Officer | 2 | $0 |
| Michele Guingani | President Elect Trustee or director, Officer | 0 | $0 |
Address and contacts
- Address (IRS master file)
- 2772 CHEEKWOOD CIR, ELLICOTT CITY, MD 21042-2472
- In care of
- % YANXUN XU
- Signed the 990
- YANXUN XU, Treasurer
- Phone
- (773) 294-4950
- Website
- http://baysian.org
- Return prepared by
- QUALITY BACK OFFICE
Mission
To promote the development and application of bayesian statistical methods by sponsoring and organizing meetings, publishing of a newsletter and journal, and sponsor academic awards and maintain a webpage conference organization.
Program accomplishments
- Conferences and workshops to promote Bayesiann Methods through lectures, contributed talks and events.Expenses $183,058
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 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 42-1517735
- 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
- 2002
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U34)
- Assets (IRS master file)
- $970,827
- Income (IRS master file)
- $456,651
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $456,651 | $252,442 | $970,827 | IRS |
| 990 | December 2024 | $576,774 | $478,160 | $766,618 | XML |
| 990 | December 2023 | $139,782 | $116,575 | $668,004 | XML |
| 990 | December 2022 | $416,109 | $366,034 | $644,797 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2019 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | 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 42-1517735).
Questions about INTERNATIONAL SOCIETY FOR BAYESIAN ANALYSIS
- What is the EIN of INTERNATIONAL SOCIETY FOR BAYESIAN ANALYSIS?
- The employer identification number (EIN) of INTERNATIONAL SOCIETY FOR BAYESIAN ANALYSIS is 42-1517735.
- Is INTERNATIONAL SOCIETY FOR BAYESIAN ANALYSIS tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2002.
- Are donations to INTERNATIONAL SOCIETY FOR BAYESIAN ANALYSIS tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does INTERNATIONAL SOCIETY FOR BAYESIAN ANALYSIS 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 SOCIETY FOR BAYESIAN ANALYSIS 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 SOCIETY FOR BAYESIAN ANALYSIS last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who are the officers and directors of INTERNATIONAL SOCIETY FOR BAYESIAN ANALYSIS?
- The 990 for the year ended December 31, 2025 lists 22 people; 0 received compensation from the organization.
- How much revenue does INTERNATIONAL SOCIETY FOR BAYESIAN ANALYSIS have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $456,651, expenses of $252,442 and total assets of $970,827 at year end.
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