STOCK TITAN

RSU tax withholding trims Diodes (NASDAQ: DIOD) advisor stake

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Diodes Incorporated special advisor Keh Shew Lu reported routine equity compensation activity. On May 26, 2026, 1,970 shares of Diodes common stock were withheld at $108.24 per share to cover income tax on vested restricted stock units, leaving 90,305 direct shares owned. The filing also lists indirect holdings through entities including 180,131 shares held by Texastac Investments, LP, 4,700 shares held by The Lu 2017 Irrevocable Trust, 6,000 shares held by The Lu Family Foundation, and 225,152 shares held by the Lu Grandchildren's Trust.

Positive

  • None.

Negative

  • None.
Insider LU KEH SHEW
Role Insider
Type Security Shares Price Value
Tax Withholding Diodes Incorporated Common Stock 1,970 $108.24 $213K
holding Diodes Incorporated Common Stock -- -- --
holding Diodes Incorporated Common Stock -- -- --
holding Diodes Incorporated Common Stock -- -- --
holding Diodes Incorporated Common Stock -- -- --
Holdings After Transaction: Diodes Incorporated Common Stock — 90,305 shares (Direct); Diodes Incorporated Common Stock — 225,152 shares (Indirect, Lu Grandchildren's Trust)
Footnotes (1)
  1. [object Object]
Tax-withheld shares 1,970 shares Withheld to cover income tax on vested RSUs on May 26, 2026
Withholding price $108.24/share Value used for RSU tax-withholding shares
Direct holdings after transaction 90,305 shares Direct Diodes common stock owned by Keh Shew Lu after withholding
Texastac Investments, LP holdings 180,131 shares Indirect Diodes ownership via Texastac Investments, LP
Lu 2017 Irrevocable Trust holdings 4,700 shares Indirect Diodes ownership via The Lu 2017 Irrevocable Trust
Lu Family Foundation holdings 6,000 shares Indirect Diodes ownership via The Lu Family Foundation
Lu Grandchildren's Trust holdings 225,152 shares Indirect Diodes ownership via Lu Grandchildren's Trust
restricted stock unit financial
"Vested restricted stock unit shares were automatically withheld to cover income tax."
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
tax-withholding disposition financial
"transaction_action": "tax-withholding disposition""
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
indirect ownership financial
""ownership_type": "indirect""
Form 4 regulatory
"INSIDER FILING DATA (Form 4):"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
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FAQ

What insider activity did DIODES INC (DIOD) report for Keh Shew Lu?

DIODES INC reported that special advisor Keh Shew Lu had 1,970 shares of common stock withheld to cover income tax on vested restricted stock units. This was a tax-withholding disposition, not an open-market sale or purchase of shares.

How many Diodes (DIOD) shares were withheld for taxes in this filing?

The filing shows that 1,970 Diodes common shares were withheld at $108.24 per share. These shares were used to satisfy income tax obligations arising from vested restricted stock units rather than being sold on the open market.

What are Keh Shew Lu’s direct Diodes (DIOD) share holdings after this transaction?

After the tax-withholding transaction, Keh Shew Lu directly holds 90,305 shares of Diodes common stock. This figure reflects his remaining direct ownership following the automatic withholding of 1,970 shares to cover income tax on vested restricted stock units.

What indirect Diodes (DIOD) holdings are reported for Keh Shew Lu?

The filing lists indirect ownership of Diodes shares through several entities: 180,131 shares via Texastac Investments, LP, 4,700 shares via The Lu 2017 Irrevocable Trust, 6,000 shares via The Lu Family Foundation, and 225,152 shares via the Lu Grandchildren's Trust.

Was the Diodes (DIOD) insider transaction a market sale or a tax withholding?

The transaction was a tax withholding, not a market sale. Shares were automatically withheld to cover income tax on vested restricted stock units, as noted in the footnote stating that vested restricted stock unit shares were withheld for income tax obligations.

Who is the insider involved in this Diodes (DIOD) Form 4 filing and what is their role?

The insider is Keh Shew Lu, identified in the filing as a Special Advisor to Diodes Incorporated. The reported activity relates to equity compensation and associated tax withholding, rather than discretionary buying or selling of common stock on the open market.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
X
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
LU KEH SHEW

(Last)(First)(Middle)
4949 HEDGCOXE ROAD
SUITE 200

(Street)
PLANO TEXAS 75024

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
DIODES INC /DEL/ [ DIOD ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
Officer (give title below)XOther (specify below)
Special Advisor
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Diodes Incorporated Common Stock05/26/2026F(1)1,970D$108.2490,305D
Diodes Incorporated Common Stock225,152ILu Grandchildren's Trust
Diodes Incorporated Common Stock6,000IThe Lu Family Foundation
Diodes Incorporated Common Stock4,700IThe Lu 2017 Irrevocable Trust
Diodes Incorporated Common Stock180,131ITexastac Investments, LP
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Vested restricted stock unit shares were automatically withheld to cover income tax.
Brett R. Whitmire as Power of Attorney for Keh-Shew Lu05/28/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)