Chih-Hsiang (Thompson) Lin - Oct 22, 2025 Form 4 Insider Report for APPLIED OPTOELECTRONICS, INC. (AAOI)

Role
President and CEO, Director
Signature
/s/ David C. Kuo, attorney in fact for Chih-Hsiang (Thompson) Lin
Stock symbol
AAOI
Transactions as of
Oct 22, 2025
Transactions value $
-$637,940
Form type
4
Date filed
10/24/2025, 04:02 PM
Previous filing
Aug 15, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Lin Chih-Hsiang (Thompson) President and CEO, Director C/O APPLIED OPTOELECTRONICS, INC., 13139 JESS PIRTLE BLVD., SUGAR LAND /s/ David C. Kuo, attorney in fact for Chih-Hsiang (Thompson) Lin 2025-10-24 0001587420

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AAOI Common Stock, $.001 par value Tax liability -$183K -5.49K -0.33% $33.40 1.66M Oct 22, 2025 Direct F1
transaction AAOI Common Stock, $.001 par value Tax liability -$292K -8.75K -0.53% $33.40 1.65M Oct 22, 2025 Direct F2
transaction AAOI Common Stock, $.001 par value Tax liability -$77.9K -2.33K -0.14% $33.40 1.65M Oct 22, 2025 Direct F3
transaction AAOI Common Stock, $.001 par value Tax liability -$84.3K -2.52K -0.15% $33.40 1.64M Oct 22, 2025 Direct F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 27, 2022.
F2 Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023.
F3 Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024.
F4 Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025.