Nonprofit · EIN 27-1638906
SOCIETY FOR RESEARCH ON BIOLOGICAL RHYTHMS INC
Tax-exempt · BRENTWOOD, TN 37027
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $132,823 | $161,915 | -$29,092 | $840,620 | $122,477 | $718,143 |
| December 31, 2024 | 990 | $690,109 | $596,922 | $93,187 | $764,697 | $49,167 | $715,530 |
| December 31, 2023 | 990 | $110,275 | $203,202 | -$92,927 | $687,105 | $96,063 | $591,042 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $60,116
- Membership dues
- $55,978
- Program service revenue
- $47,414
- Investment income
- $25,293
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Accounting fees
- $10,250
- Program services (functional)
- $35,909
- Management and general (functional)
- $126,006
Balance sheet and other
- Total assets, start of year
- $764,697
- Total assets, end of year
- $840,620
- Total liabilities, end of year
- $122,477
- Net assets, end of year
- $718,143
- Net assets without donor restrictions
- $718,143
- Gross receipts
- $132,823
- Employees
- 0
- Volunteers
- 81
- Year formed
- 2010
- State of legal domicile
- TN
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 |
|---|---|---|---|
| ALENA SUMOVA | MEMBER-AT-LARGE Trustee or director | 1 | $0 |
| JENNIFER HURLEY | SECRETARY Trustee or director, Officer | 2 | $0 |
| KAREN GAMBLE | TREASURER Trustee or director, Officer | 2 | $0 |
| JOHN HOGENESCH | PRESIDENT Trustee or director, Officer | 2 | $0 |
| JOANNA CHIU | PRESIDENT ELECT Trustee or director, Officer | 2 | $0 |
| HANSPETER HERZEL | MEMBER-AT-LARGE Trustee or director | 1 | $0 |
| TAMI MARTINO | MEMBER-AT-LARGE Trustee or director | 1 | $0 |
990 for the year ended December 31, 2024: 7 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ALENA SUMOVA | MEMBER-AT-LARGE Trustee or director | 1 | $0 |
| HANSPETER HERZEL | MEMBER-AT-LARGE Trustee or director | 1 | $0 |
| TAMI MARTINO | MEMBER-AT-LARGE Trustee or director | 1 | $0 |
| JENNIFER HURLEY | SECRETARY Trustee or director, Officer | 2 | $0 |
| KAREN GAMBLE | TREASURER Trustee or director, Officer | 2 | $0 |
| JOHN HOGENESCH | PRESIDENT Trustee or director, Officer | 2 | $0 |
| JOANNA CHIU | PRESIDENT ELECT Trustee or director, Officer | 2 | $0 |
990 for the year ended December 31, 2023: 7 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ANA SILVA | MEMBER-AT-LARGE Trustee or director | 1 | $0 |
| SHIN YAMAZAKI | MEMBER-AT-LARGE Trustee or director | 1 | $0 |
| ILIA KARATSOREOS | MEMBER-AT-LARGE Trustee or director | 1 | $0 |
| JOHN HOGENESCH | PRESIDENT ELECT Trustee or director, Officer | 2 | $0 |
| HIROKI UEDA | SECRETARY Trustee or director, Officer | 2 | $0 |
| CHRISTINE MERLIN | TREASURER Trustee or director, Officer | 2 | $0 |
| HORACIO DE LA IGLESIA | PRESIDENT Trustee or director, Officer | 2 | $0 |
Address and contacts
- Address (IRS master file)
- 5034 THOROUGHBRED LN STE A, BRENTWOOD, TN 37027-4231
- In care of
- % KAREN GAMBLE
- Principal officer (990 for 2025)
- JOHN HOGENESCH, 5034A THOROUGHBRED LANE, BRENTWOOD, TN 37027
- Signed the 990
- KAREN GAMBLE, TREASURER
- Phone
- (615) 649-3087
- Website
- WWW.SRBR.ORG
- Return prepared by
- BELLENFANT PLLC
Mission
TO PROMOTE THE ADVANCEMENT OF BASIC AND APPLIED RESEARCH IN BIOLOGICAL RHYTHMS.
Program accomplishments
- THE SOCIETY HAS 501 MEMBERS AND SERVES AS THE MAJOR PROFESSIONAL SOCIETY PROMOTING ADVANCEMENT OF BASIC AND APPLIED RESEARCH IN BIOLOGICAL RHYTHMS. ACTIVITIES INCLUDE: EDUCATING MEMBERS AND THE GENERAL PUBLIC ABOUT BIOLOGICAL RHYTHMICITY THROUGH THE SOCIETYS WEBSITE AND THROUGH THE EUCLIS WEBSITE; DISSEMINATING RESEARCH RESULTS BY MAKING THE PROGRAM AND ABSTRACT BOOK OF ALL SRBR CONFERENCES FREELY AVAILABLE ON THE SOCIETY WEBSITE; ORGANIZING AND OFFERING THE INTERNATIONAL SRBR CONFERENCE EVERY TWO YEARS; PROMOTING PROFESSIONAL DEVELOPMENT BY PROVIDING AN ONLINE MEMBERSHIP DIRECTORY AND A FORUM FOR JOB POSTINGS AND ANNOUNCEMENTS, ORGANIZING A TRAINEE PROFESSIONAL DEVELOPMENT DAY AS AN ADJUNCT TO THE SRBR.Expenses $35,909
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
- 27-1638906
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2014
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U50)
- Assets (IRS master file)
- $840,620
- Income (IRS master file)
- $132,823
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $132,823 | $161,915 | $840,620 | XML |
| 990 | December 2024 | $690,109 | $596,922 | $764,697 | XML |
| 990 | December 2023 | $110,275 | $203,202 | $687,105 | XML |
| 990 | December 2022 | $517,352 | $517,707 | $644,076 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | 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 27-1638906).
Questions about SOCIETY FOR RESEARCH ON BIOLOGICAL RHYTHMS INC
- What is the EIN of SOCIETY FOR RESEARCH ON BIOLOGICAL RHYTHMS INC?
- The employer identification number (EIN) of SOCIETY FOR RESEARCH ON BIOLOGICAL RHYTHMS INC is 27-1638906.
- Is SOCIETY FOR RESEARCH ON BIOLOGICAL RHYTHMS INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2014.
- Are donations to SOCIETY FOR RESEARCH ON BIOLOGICAL RHYTHMS INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SOCIETY FOR RESEARCH ON BIOLOGICAL RHYTHMS INC 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 RESEARCH ON BIOLOGICAL RHYTHMS INC 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 RESEARCH ON BIOLOGICAL RHYTHMS INC 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 RESEARCH ON BIOLOGICAL RHYTHMS INC?
- The 990 for the year ended December 31, 2025 names JOHN HOGENESCH.
- Who are the officers and directors of SOCIETY FOR RESEARCH ON BIOLOGICAL RHYTHMS INC?
- The 990 for the year ended December 31, 2025 lists 7 people; 0 received compensation from the organization.
- How much revenue does SOCIETY FOR RESEARCH ON BIOLOGICAL RHYTHMS INC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $132,823, expenses of $161,915 and total assets of $840,620 at year end.
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