Nonprofit · EIN 88-0743054
SECOND FOUNDATION INC
Also known as SF
Tax-exempt · CAMBRIDGE, MA 02138
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $0 | $30,000 | -$30,000 | $751,226 | $0 | $751,226 |
| December 31, 2024 | 990 | $0 | $2,000 | -$2,000 | $781,226 | $0 | $781,226 |
| December 31, 2023 | 990 | $0 | $0 | $0 | $726,251 | $0 | $726,251 |
Financial details: 990 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 fundraising fees
- $0
- Travel
- $10,000
- Program services (functional)
- $30,000
Balance sheet and other
- Total assets, start of year
- $781,226
- Total assets, end of year
- $751,226
- Total liabilities, end of year
- $0
- Net assets, end of year
- $751,226
- Net assets without donor restrictions
- $751,226
- Gross receipts
- $0
- Employees
- 0
- Volunteers
- 3
- Year formed
- 2022
- State of legal domicile
- MA
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 |
|---|---|---|---|
| Michele Reilly | Co-Director and Vice President Trustee or director | 10 | $0 |
| Seth Lloyd | Director and President Trustee or director | 10 | $0 |
| Stephen Crane | Clerk and Treasurer Highest-paid employee | 1 | $0 |
990 for the year ended December 31, 2024: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Michele Reilly | Co-Director and Vice President Officer | 10 | $0 |
| Stephen Crane | Clerk and Treasurer Officer | 5 | $0 |
| Seth Lloyd | Director and President Officer | 10 | $0 |
990 for the year ended December 31, 2023: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Michele Reilly | Co-Director and Vice President Officer | 20 | $0 |
| Stephen Crane | Clerk and Treasurer Key employee | 0 | $0 |
| Seth Lloyd | Director and President Key employee | 0 | $0 |
Address and contacts
- Address (IRS master file)
- 36 IRVING ST APT 3, CAMBRIDGE, MA 02138-3027
- Principal officer (990 for 2025)
- Seth Lloyd, 36 Irving Street unit 3, Cambridge, MA 02138
- Signed the 990
- Seth Lloyd, director
- Phone
- (781) 413-4657
Mission
The Second Foundation creates a second space, outside of academia, where intellectual interchange, collaboration, cross-pollination and musing can flourish in an environment focused on creativity and ideation over professional output.
Program accomplishments
- Ran workshops plus discussion sessions on complex systems, the quantum mechanics of time travel, and quantum computation and sensing.Expenses $20,000
- Organized events for scientists, scholars, and theaterExpenses $10,000
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 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
- 88-0743054
- 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
- 2022
- Accounting year ends
- December
- Files
- Form 990-N (e-Postcard)
- Category (NTEE)
- Science and technology (U99)
- Assets (IRS master file)
- $751,226
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $0 | $30,000 | $751,226 | IRS |
| 990 | December 2024 | $0 | $2,000 | $781,226 | IRS |
| 990 | December 2023 | $0 | $0 | $726,251 | XML |
| 990 | December 2022 | $540,000 | $50,851 | $692,544 | 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 88-0743054).
Questions about SECOND FOUNDATION INC
- What is the EIN of SECOND FOUNDATION INC?
- The employer identification number (EIN) of SECOND FOUNDATION INC is 88-0743054.
- Is SECOND FOUNDATION INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2022.
- Are donations to SECOND FOUNDATION INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SECOND FOUNDATION INC file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of SECOND FOUNDATION 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 SECOND FOUNDATION 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 SECOND FOUNDATION INC?
- The 990 for the year ended December 31, 2025 names Seth Lloyd.
- Who are the officers and directors of SECOND FOUNDATION INC?
- The 990 for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
- How much revenue does SECOND FOUNDATION INC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $0, expenses of $30,000 and total assets of $751,226 at year end.
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