Hung-Lun (fred) Chang - 22 Jan 2026 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
22 Jan 2026
Net transactions value
-$243,252
Form type
4
Filing time
26 Jan 2026, 19:00:27 UTC
Previous filing
24 Oct 2025
Next filing
11 Feb 2026
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 26 Jan 2026 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 $71,924 -1,874 -0.75% $38.38 248,683 22 Jan 2026 Direct F1
transaction AAOI Common Stock, $.001 par value Tax liability $112,837 -2,940 -1.2% $38.38 245,743 22 Jan 2026 Direct F2
transaction AAOI Common Stock, $.001 par value Tax liability $25,868 -674 -0.27% $38.38 245,069 22 Jan 2026 Direct F3
transaction AAOI Common Stock, $.001 par value Tax liability $32,623 -850 -0.35% $38.38 244,219 22 Jan 2026 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.