Nonprofit · EIN 42-1529790
JANET & SETH ROSENBERG FOUNDATION INC
Tax-exempt · CAMBRIDGE, MA 02139
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $257,101 | $24,255 | $232,846 | $683,883 | $0 | $683,883 |
| December 31, 2024 | 990-PF | $72,969 | $22,411 | $50,558 | $452,087 | $0 | $452,087 |
| December 31, 2023 | 990-PF | $71,446 | $17,725 | $53,721 | $402,175 | $0 | $402,175 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $60,000
- Dividends
- $12,414
- Interest
- $1
- Other income
- $184,686
Expenses
- Grants and similar amounts paid
- $22,650
- Disbursements for charitable purposes
- $22,650
- Excise tax on investment income
- $2,740
Balance sheet and other
- Total assets, start of year
- $452,087
- Total assets, end of year
- $683,883
- Total liabilities, end of year
- $0
- Net assets, end of year
- $683,883
- Fair market value of assets
- $683,883
- Qualifying distributions
- $22,650
- Net investment income
- $197,101
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-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| SETH ROSENBERG 100 LANSDOWNE ST APT 1509, CAMBRIDGE, MA 02139 | VICE PRESIDE | 0 | $0 |
| JANET ROSENBERG 100 LANSDOWNE ST APT 1509, CAMBRIDGE, MA 02139 | PRESIDENT | 0 | $0 |
990-PF for the year ended December 31, 2024: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| SETH ROSENBERG 100 LANSDOWNE ST APT 1509, CAMBRIDGE, MA 02139 | VICE PRESIDE | 0 | $0 |
| JANET ROSENBERG 100 LANSDOWNE ST APT 1509, CAMBRIDGE, MA 02139 | PRESIDENT | 0 | $0 |
990-PF for the year ended December 31, 2023: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| SETH ROSENBERG PO BOX 28965, SCOTTSDALE, AZ 852550166 | VICE PRESIDE | 0 | $0 |
| JANET ROSENBERG PO BOX 28965, SCOTTSDALE, AZ 852550166 | PRESIDENT | 0 | $0 |
Address and contacts
- Address (IRS master file)
- 100 LANDSDOWNE ST APT 1509, CAMBRIDGE, MA 02139-4231
- In care of
- % SETH ROSENBERG
- Signed the 990-PF
- JANET ROSENBERG, PRESIDENT
- Phone
- (480) 248-8640
- Return prepared by
- LOUIS NARDONE CPA
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. 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-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 42-1529790
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private non-operating foundation
- Donations deductible (Pub 78)
- Private foundation, 30% limit
- Exempt since
- 2002
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T20)
- Assets (IRS master file)
- $683,883
- Income (IRS master file)
- $257,101
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $257,101 | $24,255 | $683,883 | XML |
| 990-PF | December 2024 | $72,969 | $22,411 | $452,087 | IRS |
| 990-PF | December 2023 | $71,446 | $17,725 | $402,175 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | 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 42-1529790).
Questions about JANET & SETH ROSENBERG FOUNDATION INC
- What is the EIN of JANET & SETH ROSENBERG FOUNDATION INC?
- The employer identification number (EIN) of JANET & SETH ROSENBERG FOUNDATION INC is 42-1529790.
- Is JANET & SETH ROSENBERG FOUNDATION INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2002.
- Are donations to JANET & SETH ROSENBERG FOUNDATION INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does JANET & SETH ROSENBERG FOUNDATION INC file?
- Form 990-PF. Private foundations file every year.
- When is the next return of JANET & SETH ROSENBERG 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 JANET & SETH ROSENBERG FOUNDATION INC last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of JANET & SETH ROSENBERG FOUNDATION INC?
- The 990-PF for the year ended December 31, 2025 lists 2 people; 0 received compensation from the organization.
- How much revenue does JANET & SETH ROSENBERG FOUNDATION INC have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $257,101, expenses of $24,255 and total assets of $683,883 at year end.
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