Nonprofit · EIN 35-2765948
MATTIS FAMILY FOUNDATION
Tax-exempt · GREENWICH, CT 06831
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $22,837 | $30,034 | -$7,197 | $336,536 | $0 | $336,536 |
| December 31, 2024 | 990-PF | $24,193 | $32,206 | -$8,013 | $343,733 | $0 | $343,733 |
| December 31, 2023 | 990-PF | $27,125 | $16,797 | $10,328 | $351,734 | $0 | $351,734 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Dividends
- $7,780
- Net gain from sales of assets
- $15,057
Expenses
- Grants and similar amounts paid
- $15,000
- Compensation of officers, directors and key employees
- $0
- Disbursements for charitable purposes
- $19,767
- Excise tax on investment income
- $167
Balance sheet and other
- Total assets, start of year
- $343,733
- Total assets, end of year
- $336,536
- Total liabilities, end of year
- $0
- Net assets, end of year
- $336,536
- Fair market value of assets
- $446,608
- Qualifying distributions
- $19,767
- Net investment income
- $22,291
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 |
|---|---|---|---|
| KATHRYN MATTIS 77 ZACCHEUS MEAD LANE, GREENWICH, CT 06831 | CHAIRMAN & SECRETARTY | 0.25 | $0 |
| PETER MATTIS 77 ZACCHEUS MEAD LANE, GREENWICH, CT 06831 | TREASURER | 0.25 | $0 |
990-PF for the year ended December 31, 2024: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| KATHRYN MATTIS 77 ZACCHEUS MEAD LANE, GREENWICH, CT 06831 | CHAIRMAN & SECRETARTY | 0.25 | $0 |
| PETER MATTIS 77 ZACCHEUS MEAD LANE, GREENWICH, CT 06831 | TREASURER | 0.25 | $0 |
990-PF for the year ended December 31, 2023: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| KATHRYN MATTIS 77 ZACCHEUS MEAD LANE, GREENWICH, CT 06831 | CHAIRMAN & SECRETARTY | 0.25 | $0 |
| PETER MATTIS 77 ZACCHEUS MEAD LANE, GREENWICH, CT 06831 | TREASURER | 0.25 | $0 |
Address and contacts
- Address (IRS master file)
- 77 ZACCHEUS MEAD LN, GREENWICH, CT 06831-3717
- Signed the 990-PF
- KATHRYN MATTIS, CHAIRMAN & SECRETARY
- Phone
- (646) 708-3013
- Return prepared by
- ALTUM PR LLC
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
- 35-2765948
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private operating foundation
- Donations deductible (Pub 78)
- Private operating foundation, 50% limit
- Exempt since
- 2022
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T22)
- Assets (IRS master file)
- $336,536
- Income (IRS master file)
- $121,131
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $22,837 | $30,034 | $336,536 | IRS |
| 990-PF | December 2024 | $24,193 | $32,206 | $343,733 | XML |
| 990-PF | December 2023 | $27,125 | $16,797 | $351,734 | XML |
| 990-PF | December 2022 | – | – | – | 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 35-2765948).
Questions about MATTIS FAMILY FOUNDATION
- What is the EIN of MATTIS FAMILY FOUNDATION?
- The employer identification number (EIN) of MATTIS FAMILY FOUNDATION is 35-2765948.
- Is MATTIS FAMILY FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2022.
- Are donations to MATTIS FAMILY FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private operating foundation, 50% limit).
- Which annual return does MATTIS FAMILY FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of MATTIS FAMILY FOUNDATION 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 MATTIS FAMILY FOUNDATION 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 MATTIS FAMILY FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 2 people; 0 received compensation from the organization.
- How much revenue does MATTIS FAMILY FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $22,837, expenses of $30,034 and total assets of $336,536 at year end.
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