Diodes (NASDAQ: DIOD) CEO Yu logs share sale and RSU tax withholding

Filing Impact

(High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Diodes Incorporated President and CEO Gary Yu reported an open-market sale of Diodes Incorporated Common Stock along with a separate tax-related share withholding tied to vested restricted stock units.

On May 27, 2026, Yu sold 3,632 shares in an open-market transaction at $110.08 per share. One day earlier, on May 26, 2026, 592 shares were automatically withheld to cover income tax on vested restricted stock units, a non-market tax-withholding disposition. After these transactions, Yu directly holds 108,147 shares of Diodes Incorporated Common Stock.

Insider Trade Summary

Net Seller: 3,632 shares ($399,811)

Net Sell 2 txns

Insider Yu Gary

Role President and CEO

Sold 3,632 shs ($400K)

Type	Security	Shares	Price	Value
Sale	Diodes Incorporated Common Stock	3,632	$110.08	$400K
Tax Withholding	Diodes Incorporated Common Stock	592	$108.24	$64K

Holdings After Transaction: Diodes Incorporated Common Stock — 108,147 shares (Direct, null)

Footnotes (1)

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Key Figures

Open-market shares sold: 3,632 shares Sale price per share: $110.08 per share Tax-withheld shares: 592 shares +2 more

5 metrics

Open-market shares sold 3,632 shares Diodes Incorporated Common Stock sold on May 27, 2026

Sale price per share $110.08 per share Open-market sale of 3,632 shares on May 27, 2026

Tax-withheld shares 592 shares RSU-related tax-withholding disposition on May 26, 2026

Shares owned after transactions 108,147 shares Direct holdings of common stock following reported transactions

Net shares sold 3,632 shares Net buy/sell direction reported as net-sell in summary

Key Terms

open-market sale, tax-withholding disposition, restricted stock unit, Form 4

4 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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.

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.

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.

Form 4 Insider Transactions: What Each Field Means →

05/27/2026 - 06:03 PM

SEC Form 4

FORM 4

UNITED 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

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^*

Yu Gary

(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)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Diodes Incorporated Common Stock	05/26/2026		F⁽¹⁾		592	D	$108.24	111,779	D
Diodes Incorporated Common Stock	05/27/2026		S		3,632	D	$110.08	108,147	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Vested restricted stock unit shares were automatically withheld to cover income tax.

	Brett R. Whitmire as Power of Attorney for Gary Yu	05/27/2026
	** Signature of Reporting Person	Date
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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did DIOD CEO Gary Yu report on this Form 4?

Gary Yu reported two transactions: an open-market sale of 3,632 Diodes Incorporated Common Stock shares and a separate withholding of 592 shares to cover income tax on vested restricted stock units.

How many Diodes (DIOD) shares did Gary Yu sell and at what price?

Gary Yu sold 3,632 Diodes Incorporated Common Stock shares in an open-market transaction at a price of $110.08 per share on May 27, 2026, as disclosed in the Form 4 filing.

What was the purpose of the 592 Diodes (DIOD) shares disposed of by Gary Yu?

The 592 shares were not sold in the market; they were automatically withheld to cover income tax on vested restricted stock unit shares, as indicated by the tax-withholding disposition and related footnote.

How many Diodes (DIOD) shares does Gary Yu own after these transactions?

Following the reported transactions, Gary Yu directly owns 108,147 shares of Diodes Incorporated Common Stock, reflecting his remaining equity stake after the open-market sale and tax-withholding share disposition.

Were any derivative securities or options involved in Gary Yu’s DIOD Form 4?

No derivative transactions were reported. The Form 4 lists only non-derivative common stock transactions, including an open-market sale and a tax-withholding disposition related to vested restricted stock units.