Hung-Lun (fred) Chang - 09 May 2025 Form 4 Insider Report for APPLIED OPTOELECTRONICS, INC. (AAOI)

Role: *** Senior Vice President and North America General Manager.
Signature: /s/ David C. Kuo, attorney in fact for Hung-Lun (Fred) Chang
Issuer symbol: AAOI
Transactions as of: 09 May 2025
Net transactions value: -$804,656
Form type: 4
Filing time: 13 May 2025, 17:08:18 UTC
Previous filing: 02 May 2025
Next filing: 14 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Chang Hung-Lun (Fred)	*** Senior Vice President and North America General Manager.	C/O APPLIED OPTOELECTRONICS, INC., 13139 JESS PIRTLE BLVD., SUGAR LAND	/s/ David C. Kuo, attorney in fact for Hung-Lun (Fred) Chang	13 May 2025	0001587462

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AAOI	Common Stock, $.001 par value	Award	$0	+142,857	+67%	$0.000000	357,195	09 May 2025	Direct	F1
transaction	AAOI	Common Stock, $.001 par value	Tax liability	$804,656	-54,516	-15%	$14.76	302,679	13 May 2025	Direct	F2

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

Explanation of Responses:

Id	Content
F1	Consists of shares earned in settlement of performance vesting restricted stock units for the 2022-2025 performance period that were earned and settled with respect to maximum performance.
F2	Consists of shares withheld to satisfy applicable tax withholding obligations.

Remarks:

*** Senior Vice President and North America General Manager.