Nonprofit · EIN 85-4175314
THOUSAND MATHER FOUNDATION
Tax-exempt · CASTRO VALLEY, CA 94546
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| October 31, 2025 | 990-PF | $0 | $1,259 | -$1,259 | $31,607 | $9,984 | $21,623 |
| October 31, 2024 | 990-PF | $391 | $2,356 | -$1,965 | $17,008 | $8,725 | $8,283 |
| October 31, 2023 | 990-PF | $746 | $534 | $212 | $28,404 | $6,369 | $22,035 |
Financial details: 990-PF for the year ended October 31, 2025
Revenue
- Contributions, gifts and grants
- $0
Expenses
- Grants and similar amounts paid
- $1,039
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $0
- Disbursements for charitable purposes
- $1,259
Balance sheet and other
- Total assets, start of year
- $17,008
- Total assets, end of year
- $31,607
- Total liabilities, end of year
- $9,984
- Net assets, end of year
- $21,623
- Fair market value of assets
- $31,607
- Qualifying distributions
- $1,259
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 October 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| William Wong 5229 Winifred Dr, Castro Valley, CA 945462551 | CFO | 2 | $0 |
| Karina Leung 4977 Kathleen Avenue, Castro Valley, CA 945462507 | CEO | 2 | $0 |
990-PF for the year ended October 31, 2024: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| William Wong 5229 Winifred Drive, Castro Valley, CA 94546 | CFO | 2 | $0 |
| Karina Leung 4977 Kathleen, Castro Valley, CA 94546 | CEO | 2 | $0 |
990-PF for the year ended October 31, 2023: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| William Wong 5229 WINIFRED DR, CASTRO VALLEY, CA 94546 | CFO | 2 | $0 |
| Karina Leung 4977 Kathleen Ave, Castro Valley, CA 94546 | CEO | 2 | $0 |
Address and contacts
- Address (IRS master file)
- 4977 KATHLEEN AVE, CASTRO VALLEY, CA 94546-2507
- In care of
- % KARINA LEUNG
- Signed the 990-PF
- Karina L Leung, CEO
- Phone
- (510) 706-8981
- Website
- www.oag.ca.gov
California records
California keeps its own records of charities and corporations. Search them by EIN 85-4175314 or by the name THOUSAND MATHER FOUNDATION.
- 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 October, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2024 | October 31, 2025 | March 16, 2026 | 990-PF on file |
| 2023 | October 31, 2024 | March 17, 2025 | 990-PF on file |
| 2022 | October 31, 2023 | March 15, 2024 | 990-PF on file |
IRS record
- EIN
- 85-4175314
- 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
- 2022
- Accounting year ends
- October
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T22)
- Assets (IRS master file)
- $31,607
- Income (IRS master file)
- $1
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | October 2025 | $0 | $1,259 | $31,607 | XML |
| 990-PF | October 2024 | $391 | $2,356 | $17,008 | XML |
| 990-PF | October 2023 | $746 | $534 | $28,404 | XML |
| 990-PF | October 2022 | – | – | – | IRS |
| 990-PF | October 2021 | – | – | – | 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 85-4175314).
Questions about THOUSAND MATHER FOUNDATION
- What is the EIN of THOUSAND MATHER FOUNDATION?
- The employer identification number (EIN) of THOUSAND MATHER FOUNDATION is 85-4175314.
- Is THOUSAND MATHER FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2022.
- Are donations to THOUSAND MATHER FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does THOUSAND MATHER FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of THOUSAND MATHER FOUNDATION due?
- The return for tax year 2025 (the year ending October 31, 2026) is due March 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did THOUSAND MATHER FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended October 2025.
- Who are the officers and directors of THOUSAND MATHER FOUNDATION?
- The 990-PF for the year ended October 31, 2025 lists 2 people; 0 received compensation from the organization.
- How much revenue does THOUSAND MATHER FOUNDATION have?
- On its 990-PF for the year ended October 31, 2025 it reported revenue of $0, expenses of $1,259 and total assets of $31,607 at year end.
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All nonprofits in CASTRO VALLEY · California · Philanthropy, voluntarism and grantmaking foundations