Nonprofit · EIN 87-4053108
DIODES FOUNDATION
Tax-exempt · WILMINGTON, DE 19809
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $2,182,195 | $277,369 | $1,904,826 | $12,161,002 | $0 | $12,161,002 |
| December 31, 2024 | 990-PF | $2,478,658 | $922,110 | $1,556,548 | $10,256,176 | $0 | $10,256,176 |
| December 31, 2023 | 990-PF | $5,712,179 | $504,717 | $5,207,462 | $8,699,628 | $0 | $8,699,628 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $1,500,000
- Dividends
- $577,443
- Interest
- $26,403
- Net gain from sales of assets
- $78,349
Expenses
- Grants and similar amounts paid
- $189,725
- Compensation of officers, directors and key employees
- $0
- Disbursements for charitable purposes
- $207,269
- Excise tax on investment income
- $8,639
Balance sheet and other
- Total assets, start of year
- $10,256,176
- Total assets, end of year
- $12,161,002
- Total liabilities, end of year
- $0
- Net assets, end of year
- $12,161,002
- Fair market value of assets
- $12,985,725
- Qualifying distributions
- $207,269
- Net investment income
- $682,195
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 |
|---|---|---|---|
| Keh-Shew Lu Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Dir, Chairman | 1 | $0 |
| Richard D White Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Dir, Sec | 1 | $0 |
| Brett Whitmire Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Dir, Treas | 1 | $0 |
| Gary Yu Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Dir, Pres | 1 | $0 |
990-PF for the year ended December 31, 2024: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Keh-Shew Lu Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Chairman, Dir | 1 | $0 |
| Richard D White Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Dir, Sec | 1 | $0 |
| Brett Whitmire Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Dir, Treas | 1 | $0 |
990-PF for the year ended December 31, 2023: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Dr Keh-Shew Lu Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Chairman, Dir | 1 | $0 |
| Richard D White Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Dir, Sec | 1 | $0 |
| Brett Whitmire Foundation Source 501 Silverside Rd, Wilmington, DE 198091377 | Dir, Treas | 1 | $0 |
Address and contacts
- Address (IRS master file)
- FOUNDATION SOURCE 501 SILVERSIDE RD, WILMINGTON, DE 19809-0000
- In care of
- % FOUNDATION SOURCE
- Signed the 990-PF
- Brett Whitmire, Treasurer
- Phone
- (800) 839-1754
- Return prepared by
- Foundation Source
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
- 87-4053108
- 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
- 2023
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Education (B99)
- Assets (IRS master file)
- $12,161,002
- Income (IRS master file)
- $8,254,138
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $2,182,195 | $277,369 | $12,161,002 | XML |
| 990-PF | December 2024 | $2,478,658 | $922,110 | $10,256,176 | XML |
| 990-PF | December 2023 | $5,712,179 | $504,717 | $8,699,628 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 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 87-4053108).
Questions about DIODES FOUNDATION
- What is the EIN of DIODES FOUNDATION?
- The employer identification number (EIN) of DIODES FOUNDATION is 87-4053108.
- Is DIODES FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2023.
- Are donations to DIODES FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does DIODES FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of DIODES 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 DIODES 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 DIODES FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
- How much revenue does DIODES FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $2,182,195, expenses of $277,369 and total assets of $12,161,002 at year end.
Other nonprofits in WILMINGTON
- ODYSSEY CHARTER SCHOOL INCORPORATED EIN 20-1787299 · last filed 990 for 2025
- HOMER SKELTON CHARITABLE FOUNDATION EIN 62-1578268 · last filed 990-PF for 2024
- TOWER HILL SCHOOL EIN 51-0065745 · last filed 990 for 2025
- GOLDEY BEACOM COLLEGE INC EIN 51-0109178 · last filed 990 for 2025
- LEE INC EIN 20-8848357 · last filed 990 for 2024
- UNIVERSITY OF THE PEOPLE EIN 26-4078735 · last filed 990 for 2025
- TATNALL SCHOOL INC EIN 51-0071443 · last filed 990 for 2025
- KUUMBA ACADEMY CHARTER SCHOOL INC EIN 51-0399911 · last filed 990 for 2025