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

Role: SVP Worldwide Analog Products
Signature: Brett R. Whitmire as Power of Attorney for Andy Kuo-Ting Tsong
Issuer symbol: DIOD
Transactions as of: 01 Feb 2026
Net transactions value: -$93,477
Form type: 4
Filing time: 04 Feb 2026, 13:53:28 UTC
Previous filing: 02 Jul 2025
Next filing: 17 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Tsong Andy	SVP Worldwide Analog Products	4949 HEDGCOXE ROAD, PLANO	Brett R. Whitmire as Power of Attorney for Andy Kuo-Ting Tsong	04 Feb 2026	0001966189

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DIOD	Diodes Incorporated Common Stock	Award	$0	+18,000	+46%	$0.000000	57,222	01 Feb 2026	Direct	F1, F2
transaction	DIOD	Diodes Incorporated Common Stock	Tax liability	$93,477	-1,541	-2.7%	$60.66	55,681	02 Feb 2026	Direct	F3
transaction	DIOD	Diodes Incorporated Common Stock - Performance Stock Units	Award	$0	+18,000	+78%	$0.000000	41,100	01 Feb 2026	Direct	F4, F5, F6

* 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	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.
F5	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).
F6	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%.