Nonprofit · EIN 36-3857626
TANG RESEARCH FOUNDATION
Tax-exempt · SKOKIE, IL 60077
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $845,147 | $562,947 | $282,200 | $6,971,833 | $0 | $6,971,833 |
| December 31, 2024 | 990-PF | $601,460 | $527,874 | $73,586 | $6,689,633 | $0 | $6,689,633 |
| December 31, 2023 | 990-PF | $376,569 | $570,680 | -$194,111 | $6,616,047 | $0 | $6,616,047 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Dividends
- $410,594
- Net gain from sales of assets
- $434,553
Expenses
- Grants and similar amounts paid
- $457,397
- Disbursements for charitable purposes
- $471,275
- Excise tax on investment income
- $10,473
Balance sheet and other
- Total assets, start of year
- $6,689,633
- Total assets, end of year
- $6,971,833
- Total liabilities, end of year
- $0
- Net assets, end of year
- $6,971,833
- Fair market value of assets
- $10,159,147
- Qualifying distributions
- $471,275
- Net investment income
- $845,147
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 |
|---|---|---|---|
| Andrew Eisenberg 9452 LeClaire Ave, Skokie, IL 60077 | COO | 15 | $0 |
| Luou Xin History Dept Peking University, Bejing, 100871, CH | President | 10 | $0 |
| Mark Lam Flat A 16F Block 1, Ying Ga Garden, HK | Managing Direct | 10 | $0 |
| Jason Steuber 3631 NW 107th Terrace, Gainesville, FL 32606 | Secretary | 10 | $0 |
990-PF for the year ended December 31, 2024: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Andrew Eisenberg 9452 LeClaire Ave, Skokie, IL 60077 | COO | 15 | $0 |
| Luou Xin History Dept Peking University, Bejing, 100871, CH | President | 10 | $0 |
| Mark Lam Flat A 16F Block 1, Ying Ga Garden, HK | Managing Direct | 10 | $0 |
| Jason Steuber 3631 NW 107th Terrace, Gainesville, FL 32606 | Secretary | 10 | $0 |
990-PF for the year ended December 31, 2023: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Andrew Eisenberg 9452 LeClaire Ave, Skokie, IL 60077 | COO | 15 | $0 |
| Luou Xin History Dept Peking University, Bejing, 100871, CH | President | 10 | $0 |
| Mark Lam Flat A 16F Block 1, Ying Ga Garden, HK | Managing Direct | 10 | $0 |
| Jason Steuber 3631 NW 107th Terrace, Gainesville, FL 32606 | Secretary | 10 | $0 |
Address and contacts
- Address (IRS master file)
- 9452 LE CLAIRE AVE, SKOKIE, IL 60077-1216
- In care of
- % ANDREW EISENBERG
- Signed the 990-PF
- Andrew Eisenberg, COO
- Phone
- (847) 910-5563
- Return prepared by
- Ruth Goran 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
- 36-3857626
- 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
- 1994
- Accounting year ends
- December
- Files
- Form 990-PF
- Assets (IRS master file)
- $6,971,833
- Income (IRS master file)
- $3,102,397
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $845,147 | $562,947 | $6,971,833 | IRS |
| 990-PF | December 2024 | $601,460 | $527,874 | $6,689,633 | XML |
| 990-PF | December 2023 | $376,569 | $570,680 | $6,616,047 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | IRS |
| 990-PF | December 2018 | – | – | – | IRS |
| 990-PF | December 2017 | – | – | – | 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 36-3857626).
Questions about TANG RESEARCH FOUNDATION
- What is the EIN of TANG RESEARCH FOUNDATION?
- The employer identification number (EIN) of TANG RESEARCH FOUNDATION is 36-3857626.
- Is TANG RESEARCH FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1994.
- Are donations to TANG RESEARCH FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does TANG RESEARCH FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of TANG RESEARCH 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 TANG RESEARCH 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 TANG RESEARCH FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
- How much revenue does TANG RESEARCH FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $845,147, expenses of $562,947 and total assets of $6,971,833 at year end.
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