Nonprofit · EIN 99-3860559
STEM THERAPEUTICS INC
Tax-exempt · SAN DIEGO, CA 92115
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $0 | $462 | -$462 | $1,611 | $0 | $1,611 |
| December 31, 2024 | 990-EZ | $11,000 | $8,927 | $2,073 | $2,073 | $0 | $2,073 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $0
- Program service revenue
- $0
- Investment income
- $0
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fees and payments to contractors
- $462
Balance sheet and other
- Total assets, start of year
- $2,073
- Total assets, end of year
- $1,611
- Total liabilities, end of year
- $0
- Net assets, end of year
- $1,611
- Cash, savings and investments
- $1,611
- Gross receipts
- $0
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 |
|---|---|---|---|
| Anthony Conway | President / Director | 1 | $0 |
| Howard Federoff | Secretary / Chair of the Board | 0 | $0 |
| David Schaffer | Treasurer / Director | 0 | $0 |
990-EZ for the year ended December 31, 2024: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Anthony Conway | President / Director | 40 | $20 |
| Howard Federoff | Secretary / Chair of the Board | 1 | $0 |
| David Schaffer | Treasurer / Director | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 4537 45TH ST, SAN DIEGO, CA 92115-3101
- Signed the 990-EZ
- Anthony Conway, CEO/President/Director
- Phone
- (619) 218-5912
- Website
- https://www.stem-tx.com
California records
California keeps its own records of charities and corporations. Search them by EIN 99-3860559 or by the name STEM THERAPEUTICS INC.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
Mission
The mission of Stem Therapeutics, Inc. is to develop universal stem cell-derived cellular therapies to treat diverse cancer patients with high unmet medical need to enable increased access to effective and safe cancer cell therapies close to home (the "Mission"). Stem Therapeutics is exempt under 501(c)(3) with public charity status of 170(b)(1)(A)(vi).
Program accomplishments
- none in 2025
What it must file and when
IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. 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 | Check at the IRS |
IRS record
- EIN
- 99-3860559
- 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
- 2024
- Accounting year ends
- December
- Files
- Form 990-N (e-Postcard)
- Category (NTEE)
- Medical research (H30)
- Assets (IRS master file)
- $1,611
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $0 | $462 | $1,611 | XML |
| 990-EZ | December 2024 | $11,000 | $8,927 | $2,073 | XML |
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 99-3860559).
Questions about STEM THERAPEUTICS INC
- What is the EIN of STEM THERAPEUTICS INC?
- The employer identification number (EIN) of STEM THERAPEUTICS INC is 99-3860559.
- Is STEM THERAPEUTICS INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2024.
- Are donations to STEM THERAPEUTICS INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does STEM THERAPEUTICS INC file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of STEM THERAPEUTICS 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 STEM THERAPEUTICS INC 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 STEM THERAPEUTICS INC?
- The 990-EZ for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
- How much revenue does STEM THERAPEUTICS INC have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $0, expenses of $462 and total assets of $1,611 at year end.
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