X0609 4 2026-04-22 0 0001158114 APPLIED OPTOELECTRONICS, INC. AAOI 0001587599 Murry Stefan J. false C/O APPLIED OPTOELECTRONICS, INC. 13139 JESS PIRTLE BLVD. SUGAR LAND TX 77478 0 1 0 0 Chief Financial Officer 0 Common Stock, $.001 par value 2026-04-22 4 F 0 3266 150.57 D 272804 D Common Stock, $.001 par value 2026-04-22 4 F 0 746 150.57 D 272058 D Common Stock, $.001 par value 2026-04-22 4 F 0 1086 150.57 D 270972 D Common Stock, $.001 par value 2026-04-22 4 F 0 846 150.57 D 270126 D Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on June 26, 2023. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 29, 2024. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on April 11, 2025. Reflects shares surrendered to the Issuer to satisfy tax-withholding obligations upon the vesting of restricted stock unit award granted on February 9, 2026. /s/ David C. Kuo, attorney in fact for Stefan J. Murry 2026-04-24