Richard B. Black - 05 Mar 2026 Form 4 Insider Report for APPLIED OPTOELECTRONICS, INC. (AAOI)

Role: Director
Signature: /s/ David C. Kuo, attorney in fact for Richard B. Black
Issuer symbol: AAOI
Transactions as of: 05 Mar 2026
Net transactions value: -$306,945
Form type: 4
Filing time: 05 Mar 2026, 17:46:46 UTC
Previous filing: 01 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
BLACK RICHARD B	Director	C/O APPLIED OPTOELECTRONICS, INC., 13139 JESS PIRTLE BLVD., SUGAR LAND	/s/ David C. Kuo, attorney in fact for Richard B. Black	05 Mar 2026	0001199697

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AAOI	Common Stock, $.001 par value	Sale	$306,945	-3,231	-1.9%	$95.00	164,363	05 Mar 2026	By Trust	F1

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

Explanation of Responses:

Id	Content
F1	The shares were sold by The Richard B. Black Revocable Trust U/A Dtd. Aug 31, 1998; Richard B. Black TTEE, to which the reporting person contributed 10,231 shares of common stock on February 19, 2024, in a transaction that resulted in a change in form of beneficial ownership from direct to indirect. The shares were sold in multiple transactions on March 05, 2026 at actual sale price of $95.00 per share. The reporting person undertakes to provide upon request by SEC staff, the issuer, or a securityholder of the issuer, full information regarding the number of shares sold during each transaction. The shares were held by the reporting person in a revocable living trust of which the reporting person is the trustee and beneficial owner.

Content

The shares were sold by The Richard B. Black Revocable Trust U/A Dtd. Aug 31, 1998; Richard B. Black TTEE, to which the reporting person contributed 10,231 shares of common stock on February 19, 2024, in a transaction that resulted in a change in form of beneficial ownership from direct to indirect. The shares were sold in multiple transactions on March 05, 2026 at actual sale price of $95.00 per share. The reporting person undertakes to provide upon request by SEC staff, the issuer, or a securityholder of the issuer, full information regarding the number of shares sold during each transaction. The shares were held by the reporting person in a revocable living trust of which the reporting person is the trustee and beneficial owner.