Applied Optoelectronics Officer Stock Transactions - May 2026

This Form 4 filing reports stock transactions by David C. Kuo, Senior Vice President and Chief Legal Officer of Applied Optoelectronics, Inc. On May 15, 2026, Kuo acquired 156,583 shares at $0.00 per share through settlement of performance-vesting restricted stock units for the 2023-2026 performance period, bringing his total holdings to 235,661 shares. On May 19, 2026, he disposed of 19,064 shares at $190.36 per share to satisfy tax withholding obligations, reducing his holdings to 216,597 shares. Additionally on May 19, he sold 19,227 shares at $173.26 per share, leaving him with 197,370 shares. The transactions represent a significant change in his equity position, with the initial acquisition reflecting earned performance-based compensation and subsequent sales for tax obligations and personal liquidity.