Nonprofit · EIN 32-0516588
S MARK TAPER FOUNDATION
Tax-exempt · LOS ANGELES, CA 90049
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $16,478,780 | $10,253,300 | $6,225,480 | $203,642,245 | $737,107 | $202,905,138 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Dividends
- $3,497,739
- Interest
- $163,809
- Net gain from sales of assets
- $12,750,630
- Other income
- $66,602
Expenses
- Grants and similar amounts paid
- $7,661,100
- Compensation of officers, directors and key employees
- $10,516
- Salaries, compensation and benefits (total)
- $1,289,968
- Disbursements for charitable purposes
- $8,820,352
- Excise tax on investment income
- $209,154
Balance sheet and other
- Total assets, start of year
- $186,186,083
- Total assets, end of year
- $203,642,245
- Total liabilities, end of year
- $737,107
- Net assets, end of year
- $202,905,138
- Fair market value of assets
- $203,642,245
- Qualifying distributions
- $8,820,352
- Net investment income
- $16,412,870
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 | Other / benefits |
|---|---|---|---|---|
| ADRIENNE WITTENBERG 12011 SAN VICENTE BLVD STE 400, LOS ANGELES, CA 90049 | EXECUTIVE DIRECTOR Highest-paid employee | 40 | $468,471 | $67,306 |
| ILENE SILBERMAN 12011 SAN VICENTE BLVD STE 400, LOS ANGELES, CA 90049 | CHIEF FINANCIAL OFFI Highest-paid employee | 40 | $363,991 | $31,782 |
| KRISTEN HAGGINS 12011 SAN VICENTE BLVD STE 400, LOS ANGELES, CA 90049 | SENIOR PROGRAM OFFIC Highest-paid employee | 35 | $201,463 | $26,906 |
| DEBORAH GREEN 12011 SAN VICENTE BLVD STE 400, LOS ANGELES, CA 90049 | SENIOR ACCOUNTANT Highest-paid employee | 35 | $162,037 | $6,235 |
| THOMAS GALLATIN 12011 SAN VICENTE BLVD STE 400, LOS ANGELES, CA 90049 | GRANTS PROGRAM OFFIC Highest-paid employee | 35 | $119,516 | $32,474 |
| ROY WEITZ 12011 SAN VICENTE BOULEVARD STE 400, LOS ANGELES, CA 90049 | TRUSTEE AND INVESTMENT OFFICER | 10 | $10,516 | $1,116 |
| AMELIA TAPER BOLKER 12011 SAN VICENTE BOULEVARD STE 400, LOS ANGELES, CA 90049 | TRUSTEE AND PRESIDENT | 15 | $0 | $0 |
| JANICE TAPER LAZAROF 12011 SAN VICENTE BOULEVARD STE 400, LOS ANGELES, CA 90049 | TRUSTEE AND PRESIDENT EMERITUS | 10 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 12011 SAN VICENTE BLVD STE 400, LOS ANGELES, CA 90049-4946
- In care of
- % ROY WEITZ
- Signed the 990-PF
- AMELIA TAPER BOLKER, PRESIDENT
- Phone
- (310) 476-5543
- Return prepared by
- BAKER TILLY ADVISORY GROUP LP
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
- 32-0516588
- 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
- 2017
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T22)
- Assets (IRS master file)
- $203,642,245
- Income (IRS master file)
- $43,644,990
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | – | – | – | IRS |
| 990-PF | December 2024 | – | – | – | IRS |
| 990-PF | December 2023 | $8,374,826 | $9,309,803 | $170,681,940 | IRS |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | IRS |
990-N: the IRS publishes only the latest e-Postcard per organization; earlier years appear here as 990.tax collects the monthly files. 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.
Questions about S MARK TAPER FOUNDATION
- What is the EIN of S MARK TAPER FOUNDATION?
- The employer identification number (EIN) of S MARK TAPER FOUNDATION is 32-0516588.
- Is S MARK TAPER FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2017.
- Are donations to S MARK TAPER FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does S MARK TAPER FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of S MARK TAPER 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 S MARK TAPER 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 S MARK TAPER FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 8 people; 6 received compensation from the organization, the highest $468,471 (ADRIENNE WITTENBERG, EXECUTIVE DIRECTOR).
- How much revenue does S MARK TAPER FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $16,478,780, expenses of $10,253,300 and total assets of $203,642,245 at year end.
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