Nonprofit · EIN 84-4486353
SOCIETY FOR MATHEMATICAL BIOLOGY
Tax-exempt · ANN ARBOR, MI 48108
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $233,730 | $156,132 | $77,598 | $1,838,339 | $0 | $1,838,339 |
| December 31, 2024 | 990 | $181,580 | $101,863 | $79,717 | $1,760,741 | $0 | $1,760,741 |
| December 31, 2023 | 990 | $144,198 | $112,626 | $31,572 | $1,459,576 | $0 | $1,459,576 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $2,426
- Program service revenue
- $232,306
- Investment income
- $0
- Net income from sales of inventory
- -$1,002
- Other revenue
- -$1,002
Expenses
- Grants and similar amounts paid
- $70,512
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Legal fees
- $1,845
- Accounting fees
- $1,138
- Program services (functional)
- $119,474
- Management and general (functional)
- $36,658
Balance sheet and other
- Total assets, start of year
- $1,760,741
- Total assets, end of year
- $1,838,339
- Total liabilities, end of year
- $0
- Net assets, end of year
- $1,838,339
- Net assets without donor restrictions
- $1,838,339
- Gross receipts
- $237,396
- Employees
- 0
- Year formed
- 2020
- State of legal domicile
- MI
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 |
|---|---|---|---|
| Claus Kadelka | Treasurer Trustee or director, Officer | 2 | $0 |
| Jane Heffernan | Vice President Trustee or director, Officer | 2 | $0 |
| Brandilyn Stigler | Secretary Trustee or director, Officer | 2 | $0 |
| Robyn Araujo | Director Trustee or director | 1 | $0 |
| Amina Eladdadi | Director Trustee or director | 1 | $0 |
| Padmini Rangamani | Director Trustee or director | 1 | $0 |
| Reinhard Laubenbacher | President Trustee or director, Officer | 2 | $0 |
| Richard Bertram | Director Trustee or director | 1 | $0 |
| Jessica Conway | Director Trustee or director | 1 | $0 |
| Jennifer Flegg | Director Trustee or director | 1 | $0 |
990 for the year ended December 31, 2024: 11 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Claus Kadelka | Treasurer Trustee or director, Officer | 2 | $0 |
| Jane Heffernan | President Trustee or director, Officer | 2 | $0 |
| Brandilyn Stigler | Secretary Trustee or director, Officer | 2 | $0 |
| Robyn Araujo | Director Trustee or director | 1 | $0 |
| Amina Eladdadi | Director Trustee or director | 1 | $0 |
| Padmini Rangamani | Director Trustee or director | 1 | $0 |
| Reinhard Laubenbacher | Pres-Elect Trustee or director, Officer | 2 | $0 |
| Jonathan Forde | Secretary Trustee or director, Officer | 2 | $0 |
| Richard Bertram | Director Trustee or director | 1 | $0 |
| Jessica Conway | Director Trustee or director | 1 | $0 |
| Jennifer Flegg | Director Trustee or director | 1 | $0 |
990 for the year ended December 31, 2023: 17 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Jana Gevertz Fiorelli | Treasurer Trustee or director, Officer | 2 | $0 |
| Jane Heffernan | President Trustee or director, Officer | 2 | $0 |
| Heiko Engerling PhD | Past President Trustee or director, Officer | 2 | $0 |
| Gibin Powathil | Secretary Trustee or director, Officer | 2 | $0 |
| Robyn Araujo | Director Trustee or director | 1 | $0 |
| Amina Eladdadi | Director Trustee or director | 1 | $0 |
| Padmini Rangamani | Director Trustee or director | 1 | $0 |
| Ruth Baker | Director Trustee or director | 1 | $0 |
| Zhilan Feng | Director Trustee or director | 1 | $0 |
| Amber Smith | Director Trustee or director | 1 | $0 |
| Reinhard Laubenbacher | Pres-Elect Trustee or director, Officer | 2 | $0 |
| Jonathan Forde | Secretary Trustee or director, Officer | 2 | $0 |
| Stanca Ciupe | Treasurer Trustee or director, Officer | 2 | $0 |
| Peter Kim | Director Trustee or director | 1 | $0 |
| Richard Bertram | Director Trustee or director | 1 | $0 |
| Jessica Conway | Director Trustee or director | 1 | $0 |
| Jennifer Flegg | Director Trustee or director | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 455 E EISENHOWER PKWY STE 355, ANN ARBOR, MI 48108-3324
- In care of
- % HEIKO ENDERLING
- Principal officer (990 for 2025)
- Reinhard Laubenbacher, 455 E Eisenhower Pkwy Ste 355, Ann Arbor, MI 48108
- Signed the 990
- Claus Kadelka, Treasurer
- Website
- www.smb.org
- Return prepared by
- Bruce A Gray CPA
Mission
The Society for Mathematical Biology's mission is to promote scientific collaboration between the mathematical and biological communities.
Program accomplishments
- The Annual Meeting of the Society for Mathematical Biology was held in person at the University of Alberta, Canada. The annual conference provides an opportunity for mathematical and biological scientists to interact in a congenial atmosphere. From July 14- July 18, 2025, this meeting was held in Edmunton,Alberta, Canada. Through our Landahl Travel Grant, the Society financially supported the travel of 44 early career researchers from across the world to attend this meeting. The total amount spend on this travel support was $28,034.Expenses $72,535 · grants $28,034
- The Society also provides grants for members of our community to host smaller, focused meetings. In 2025, we financially supported eight such meetings in countries such as Bulgaria, Malawi, Mexico, and Spain.Expenses $25,076 · grants $25,076
- The Society publishes a highly regarded scientific journal, "The Bulletin of Mathematical Biology". There are 12 issues each year available both online and in paper editions. The Society pays the publisher for subscriptions for all members. The publisher remits royalty payments to the Society based on the income generated from the Bulletin. These royalty payments provide the Society with funds used to provide travel support for students participating in the Society's annual conference and other Mathematical Biology related meetings. The Society also uses some funds to provide honoraria to plenary speakers at the annual conference and support conference travel of its officers, board members, and presenters.Expenses $21,863 · revenue $21,363
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
- 84-4486353
- 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
- 2022
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U34)
- Assets (IRS master file)
- $1,838,339
- Income (IRS master file)
- $237,396
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $233,730 | $156,132 | $1,838,339 | XML |
| 990 | December 2024 | $181,580 | $101,863 | $1,760,741 | IRS |
| 990 | December 2023 | $144,198 | $112,626 | $1,459,576 | XML |
| 990 | December 2022 | $1,207,836 | $12,669 | $1,233,136 | 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 84-4486353).
Questions about SOCIETY FOR MATHEMATICAL BIOLOGY
- What is the EIN of SOCIETY FOR MATHEMATICAL BIOLOGY?
- The employer identification number (EIN) of SOCIETY FOR MATHEMATICAL BIOLOGY is 84-4486353.
- Is SOCIETY FOR MATHEMATICAL BIOLOGY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2022.
- Are donations to SOCIETY FOR MATHEMATICAL BIOLOGY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SOCIETY FOR MATHEMATICAL BIOLOGY 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 SOCIETY FOR MATHEMATICAL BIOLOGY 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 SOCIETY FOR MATHEMATICAL BIOLOGY last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of SOCIETY FOR MATHEMATICAL BIOLOGY?
- The 990 for the year ended December 31, 2025 names Reinhard Laubenbacher.
- Who are the officers and directors of SOCIETY FOR MATHEMATICAL BIOLOGY?
- The 990 for the year ended December 31, 2025 lists 10 people; 0 received compensation from the organization.
- How much revenue does SOCIETY FOR MATHEMATICAL BIOLOGY have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $233,730, expenses of $156,132 and total assets of $1,838,339 at year end.
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