Min-Chu (mike) Chen - 13 Aug 2025 Form 4 Insider Report for APPLIED OPTOELECTRONICS, INC. (AAOI)

Role: Director
Signature: /s/ David C. Kuo, attorney in fact for Min-Chu (Mike) Chen
Issuer symbol: AAOI
Transactions as of: 13 Aug 2025
Net transactions value: +$171,825
Form type: 4
Filing time: 14 Aug 2025, 19:08:40 UTC
Previous filing: 17 Jun 2025
Next filing: 10 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Chen Min-Chu (Mike)	Director	C/O APPLIED OPTOELECTRONICS, INC., 13139 JESS PIRTLE BLVD., SUGAR LAND	/s/ David C. Kuo, attorney in fact for Min-Chu (Mike) Chen	14 Aug 2025	0001587425

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AAOI	Common Stock, $.001 par value	Purchase	$171,825	+7,500	+50%	$22.91	22,500	13 Aug 2025	By Spouse	F1, F2
holding	AAOI	Common Stock, $.001 par value						177,335	13 Aug 2025	Direct

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

Explanation of Responses:

Id	Content
F1	These shares were purchased in multiple transactions on August 13, 2025, at prices ranging from $22.50 to $23.20 per share. The price reported reflects the weighted average purchase price for the transactions. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.
F2	Held directly by Yuh-Mei Chung, the spouse of Min-Chu (Mike) Chen. Mr. Chen disclaims beneficial ownership of all securities that may be deemed to be beneficially owned by his spouse, except to the extent of any indirect pecuniary interest therein.

Content

These shares were purchased in multiple transactions on August 13, 2025, at prices ranging from $22.50 to $23.20 per share. The price reported reflects the weighted average purchase price for the transactions. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.

Held directly by Yuh-Mei Chung, the spouse of Min-Chu (Mike) Chen. Mr. Chen disclaims beneficial ownership of all securities that may be deemed to be beneficially owned by his spouse, except to the extent of any indirect pecuniary interest therein.