Nonprofit · EIN 13-3508970
SOCIETY FOR LIGHT TREATMENT AND BIOLOGICAL RHYTHMS
Tax-exempt · PHILADELPHIA, PA 19107
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $61,747 | $69,046 | -$7,299 | $10,262 | $0 | $10,262 |
| December 31, 2024 | 990-EZ | $77,661 | $69,246 | $8,415 | $18,034 | $0 | $18,034 |
| December 31, 2023 | 990-EZ | $63,950 | $74,337 | -$10,387 | $9,619 | $0 | $9,619 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $7,130
- Other revenue
- $54,617
Expenses
- Grants and similar amounts paid
- $2,995
- Compensation of officers, directors and key employees
- $0
- Other expenses
- $66,051
- Program services (functional)
- $32,267
Balance sheet and other
- Total assets, start of year
- $18,034
- Total assets, end of year
- $10,262
- Total liabilities, end of year
- $0
- Net assets, end of year
- $10,262
- Cash, savings and investments
- $10,262
- Gross receipts
- $61,747
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 |
|---|---|---|---|
| John Hanifin | Treasurer | 1 | $0 |
| Lisa M Wu | Board Member | 1 | $0 |
| Delaney Wescott | Board Member | 1 | $0 |
| Manuel Spitschan | Board Member | 1 | $0 |
| Louise Ince | Board Member | 1 | $0 |
| Rebecca Cox | Board Member | 1 | $0 |
| Beatriz Bano-Otalora | Board Member | 1 | $0 |
| Ali Amidi | Board Member | 1 | $0 |
| Corrado Garbazza | President | 1 | $0 |
| Renske Lok | Vice President | 1 | $0 |
| Annick Goijarts | Administrative Manager | 1 | $0 |
990-EZ for the year ended December 31, 2024: 12 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LISA M WU PHD | BOARD MEMBER | 1 | $0 |
| DELAINEY WESCOTT PHD | BOARD MEMBER | 1 | $0 |
| MANUEL SPITSCHAN PHD | BOARD MEMBER | 1 | $0 |
| LOUISE INCE PHD | BOARD MEMBER | 1 | $0 |
| REBECCA COX PHD | BOARD MEMBER | 1 | $0 |
| BEATRIZ BANO-OTALORA PHD | BOARD MEMBER | 1 | $0 |
| ALI AMIDI PHD | BOARD MEMBER | 1 | $0 |
| CHRISTIAN CAJOCHEN PHD | PRESIDENT | 1 | $0 |
| CORRADO GARBAZZA MD PHD | PRESIDENT | 1 | $0 |
| JOHN HANIFIN PHD | TREASURER | 1 | $0 |
| RENSKE LOK PHD | VICE PRESIDENT | 1 | $0 |
| ANNICK GOIJARTS | ADMINISTRATIVE MANAGER | 1 | $0 |
990-EZ for the year ended December 31, 2023: 9 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| CHRISTIAN CAJOCHEN PHD | PRESIDENT | 1 | $0 |
| MARIJKE GORDIJN MD | BOARD MEMBER | 1 | $0 |
| CORRADO GARBAZZA MD | VICE PRESIDENT | 1 | $0 |
| RENSKE LOK PHD | BOARD MEMBER | 1 | $0 |
| LOUISE INCE PHD | BOARD MEMBER | 1 | $0 |
| LISA M WU PHD | BOARD MEMBER | 1 | $0 |
| ALEKS VIDENOVIC MD | BOARD MEMBER | 1 | $0 |
| ANNICK GOIJARTS | ADMINISTRATIVE MANAGER | 1 | $0 |
| JOHN HANIFIN PHD | TREASURER | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 1025 WALNUT ST, PHILADELPHIA, PA 19107-5001
- In care of
- % JOHN HANIFIN
- Signed the 990-EZ
- JOHN HANIFIN PHD, Treasurer
- Phone
- (215) 955-9409
- Website
- www.slrch.com
- Return prepared by
- C Edward Kennedy Jr PC
Mission
See Schedule O
Program accomplishments
- Annual Conference - Promotes research, professional development, and clinical applications applications related to light treatment and biological rythms.Expenses $32,267
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
- 13-3508970
- 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
- 1994
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $10,262
- Income (IRS master file)
- $61,747
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $61,747 | $69,046 | $10,262 | XML |
| 990-EZ | December 2024 | $77,661 | $69,246 | $18,034 | XML |
| 990-EZ | December 2023 | $63,950 | $74,337 | $9,619 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
| 990-EZ | December 2020 | – | – | – | IRS |
| 990-EZ | December 2019 | – | – | – | IRS |
| 990-EZ | 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 13-3508970).
Questions about SOCIETY FOR LIGHT TREATMENT AND BIOLOGICAL RHYTHMS
- What is the EIN of SOCIETY FOR LIGHT TREATMENT AND BIOLOGICAL RHYTHMS?
- The employer identification number (EIN) of SOCIETY FOR LIGHT TREATMENT AND BIOLOGICAL RHYTHMS is 13-3508970.
- Is SOCIETY FOR LIGHT TREATMENT AND BIOLOGICAL RHYTHMS tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1994.
- Are donations to SOCIETY FOR LIGHT TREATMENT AND BIOLOGICAL RHYTHMS tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SOCIETY FOR LIGHT TREATMENT AND BIOLOGICAL RHYTHMS 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 LIGHT TREATMENT AND BIOLOGICAL RHYTHMS 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 LIGHT TREATMENT AND BIOLOGICAL RHYTHMS 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 SOCIETY FOR LIGHT TREATMENT AND BIOLOGICAL RHYTHMS?
- The 990-EZ for the year ended December 31, 2025 lists 11 people; 0 received compensation from the organization.
- How much revenue does SOCIETY FOR LIGHT TREATMENT AND BIOLOGICAL RHYTHMS have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $61,747, expenses of $69,046 and total assets of $10,262 at year end.
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