Applied Optoelectronics Officer Joshua Yeh's Stock Transactions and Performance Award Settlement

This Form 4 filing reports stock transactions by Shu-Hua (Joshua) Yeh, Senior Vice President and Asia General Manager of Applied Optoelectronics. On May 15, 2026, Yeh acquired 192,170 shares at $0 per share through settlement of performance-vesting restricted stock units for the 2023-2026 performance period, which were earned at maximum performance levels. Following this acquisition, Yeh held 509,512 shares. On May 19, 2026, Yeh disposed of 7,928 shares at $190.36 per share to satisfy tax withholding obligations, reducing his holdings to 501,584 shares. The same day, he sold an additional 39,154 shares at $173.26 per share, leaving him with 462,430 shares. The transactions represent both the settlement of performance-based equity compensation and subsequent sales for tax purposes and personal financial management.