Gary Yu - 01 Feb 2026 Form 4 Insider Report for DIODES INC /DEL/ (DIOD)

Role: President and CEO, Director
Signature: Brett R. Whitmire as Power of Attorney for Gary Yu
Issuer symbol: DIOD
Transactions as of: 01 Feb 2026
Net transactions value: -$257,749
Form type: 4
Filing time: 04 Feb 2026, 14:29:09 UTC
Previous filing: 28 May 2025
Next filing: 26 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Yu Gary	President and CEO, Director	4949 HEDGCOXE ROAD, SUITE 200, PLANO	Brett R. Whitmire as Power of Attorney for Gary Yu	04 Feb 2026	0001848176

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DIOD	Diodes Incorporated Common Stock	Award	$0	+32,000	+38%	$0.000000	115,911	01 Feb 2026	Direct	F1, F2
transaction	DIOD	Diodes Incorporated Common Stock	Tax liability	$81,284	-1,340	-1.2%	$60.66	114,571	02 Feb 2026	Direct	F3
transaction	DIOD	Diodes Incorporated Common Stock	Sale	$176,465	-2,900	-2.5%	$60.85	111,671	03 Feb 2026	Direct	F4
transaction	DIOD	Diodes Incorporated Common Stock - Performance Stock Units	Award	$0	+32,000	+56%	$0.000000	89,000	01 Feb 2026	Direct	F5, F6, F7

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted stock units vest in four equal installments beginning 02/01/2027.
F2	Granted under Rule 16b-3 Plan.
F3	Vested restricted stock unit shares were automatically withheld to cover income tax.
F4	Vested restricted stock unit shares were automatically sold because the participant elected to participate in the Diodes Incorporated Deferred Compensation Plan.
F5	Each PSU represents a contingent right granted under the companys 2022 Equity Incentive Plan, a Rule 16b-3 Plan, to receive 1 share of Diodes Incorporated Common Stock.
F6	The PSUs vest in February 2029 upon the achievement of the 3-year financial performance measure of cumulative non-GAAP operating income for 2026 through 2028 of $243.495 million (Target Performance).
F7	This number represents the target number of PSUs (Target Award) that will vest if the Target Performance is achieved. There is a threshold that provides for payment of 50% of the Target Award upon 80% achievement of the Target Performance and a maximum that provides for payment of 200% of the Target Award upon 120% achievement of the Target Performances. Between 80% and 100% and between 100% and 120% achievement of Target Performance, the Target Award will be decreased or increased on a pro rata basis, with no payout below 80% achievement and payout limited to 200% of the Target Award if the Target Performance exceeds 120%.