Hung-Lun (Fred) Chang - Oct 22, 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
Stock symbol
AAOI
Transactions as of
Oct 22, 2025
Transactions value $
-$192,685
Form type
4
Date filed
10/24/2025, 04:03 PM
Previous filing
Aug 14, 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 2025-10-24 0001587462

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AAOI Common Stock, $.001 par value Tax liability -$56.9K -1.71K -0.67% $33.40 255K Oct 22, 2025 Direct F1
transaction AAOI Common Stock, $.001 par value Tax liability -$89.4K -2.68K -1.05% $33.40 252K Oct 22, 2025 Direct F2
transaction AAOI Common Stock, $.001 par value Tax liability -$20.5K -614 -0.24% $33.40 251K Oct 22, 2025 Direct F3
transaction AAOI Common Stock, $.001 par value Tax liability -$25.9K -774 -0.31% $33.40 251K 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.

Remarks:

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