Nonprofit · EIN 13-6279580
ARIOWITSCH FAMILY FOUNDATION INC
Tax-exempt · MILL VALLEY, CA 94941
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $28,145 | $63,519 | -$35,374 | $404,016 | $0 | $404,016 |
| December 31, 2024 | 990-PF | $20,563 | $58,656 | -$38,093 | $439,390 | $0 | $439,390 |
| December 31, 2023 | 990-PF | $58,077 | $51,220 | $6,857 | $477,483 | $0 | $477,483 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Dividends
- $28,145
Expenses
- Grants and similar amounts paid
- $60,000
- Disbursements for charitable purposes
- $60,000
- Excise tax on investment income
- $342
Balance sheet and other
- Total assets, start of year
- $439,390
- Total assets, end of year
- $404,016
- Total liabilities, end of year
- $0
- Net assets, end of year
- $404,016
- Fair market value of assets
- $1,124,906
- Qualifying distributions
- $60,000
- Net investment income
- $28,145
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 |
|---|---|---|---|
| TIM ARIOWITSCH 150 MARLIN AVENUE, MILL VALLEY, CA 94941 | President & CEO | 1 | $0 |
| TANYA ARIOWITSCH 1435 BLUE SAGE CT, BOULDER, CO 80305 | Vice President | 1 | $0 |
| MELINDA ARIOWITSCH 150 MARLIN AVENUE, MILL VALLEY, CA 94941 | Treasurer | 1 | $0 |
| ETHAN ARIOWITSCH 150 MARLIN AVENUE, MILL VALLEY, CA 94941 | Secretary | 1 | $0 |
990-PF for the year ended December 31, 2024: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| TIM ARIOWITSCH 150 MARLIN AVENUE, MILL VALLEY, CA 94941 | President & CEO | 1 | $0 |
| TANYA ARIOWITSCH 1435 BLUE SAGE CT, BOULDER, CO 80305 | Vice President | 1 | $0 |
| MELINDA ARIOWITSCH 150 MARLIN AVENUE, MILL VALLEY, CA 94941 | Treasurer | 1 | $0 |
| ETHAN ARIOWITSCH 150 MARLIN AVENUE, MILL VALLEY, CA 94941 | Secretary | 1 | $0 |
990-PF for the year ended December 31, 2023: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| TIM ARIOWITSCH 150 MARLIN AVENUE, MILL VALLEY, CA 94941 | President & CEO | 1 | $0 |
| TANYA ARIOWITSCH 1435 BLUE SAGE CT, BOULDER, CO 80305 | Vice President | 1 | $0 |
| MELINDA ARIOWITSCH 150 MARLIN AVENUE, MILL VALLEY, CA 94941 | Treasurer | 1 | $0 |
| ETHAN ARIOWITSCH 150 MARLIN AVENUE, MILL VALLEY, CA 94941 | Secretary | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 150 MARLIN AVE, MILL VALLEY, CA 94941-1311
- In care of
- % T ARIOWITSCH
- Signed the 990-PF
- TIM ARIOWITSCH, President & CEO
- Phone
- (415) 999-3845
- Return prepared by
- Thelma Kirkwood CPA An Accountancy PC
California records
California keeps its own records of charities and corporations. Search them by EIN 13-6279580 or by the name ARIOWITSCH FAMILY FOUNDATION 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)
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
- 13-6279580
- 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
- 1968
- Accounting year ends
- December
- Files
- Form 990-PF
- Assets (IRS master file)
- $404,016
- Income (IRS master file)
- $28,145
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $28,145 | $63,519 | $404,016 | IRS |
| 990-T | December 2025 | – | – | – | IRS |
| 990-PF | December 2024 | $20,563 | $58,656 | $439,390 | IRS |
| 990-T | December 2024 | – | – | – | IRS |
| 990-PF | December 2023 | $58,077 | $51,220 | $477,483 | XML |
| 990-T | December 2023 | – | – | – | IRS |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-T | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-T | 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 13-6279580).
Questions about ARIOWITSCH FAMILY FOUNDATION INC
- What is the EIN of ARIOWITSCH FAMILY FOUNDATION INC?
- The employer identification number (EIN) of ARIOWITSCH FAMILY FOUNDATION INC is 13-6279580.
- Is ARIOWITSCH FAMILY FOUNDATION INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1968.
- Are donations to ARIOWITSCH FAMILY FOUNDATION INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does ARIOWITSCH FAMILY FOUNDATION INC file?
- Form 990-PF. Private foundations file every year.
- When is the next return of ARIOWITSCH FAMILY 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 ARIOWITSCH FAMILY 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 ARIOWITSCH FAMILY FOUNDATION INC?
- The 990-PF for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
- How much revenue does ARIOWITSCH FAMILY FOUNDATION INC have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $28,145, expenses of $63,519 and total assets of $404,016 at year end.
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