Applied Optoelectronics, Inc. Senior Vice President and North America General Manager Hung-Lun (Fred) Chang filed a Form 4 on October 26, 2026, disclosing four share dispositions on October 22, 2026, related to the vesting of restricted stock unit awards.

Key Highlights

  • Reporting person: Hung-Lun (Fred) Chang, Senior Vice President and North America General Manager of Applied Optoelectronics, Inc. (NASDAQ:AAOI)
  • Transaction date: October 22, 2026, with four separate dispositions all coded "F" (shares surrendered for tax withholding)
  • Total shares disposed: 5,141 shares of Common Stock, $.001 par value, at a price of $77.32 per share across all four transactions
  • RSU grant dates involved: June 26, 2023; April 29, 2024; April 11, 2025; and February 9, 2026
  • Beneficial ownership following transactions: 244,135 shares held directly

Four RSU Vesting Events Trigger Tax-Withholding Dispositions for Chang

According to the filing, Hung-Lun (Fred) Chang, who serves as Senior Vice President and North America General Manager at Applied Optoelectronics, Inc. (NASDAQ:AAOI), reported four separate share dispositions on October 22, 2026, each carrying transaction code "F," which indicates shares surrendered to the issuer to satisfy tax-withholding obligations upon the vesting of restricted stock units.

The filing identifies the four transactions as follows: 2,940 shares were surrendered in connection with a restricted stock unit award granted on June 26, 2023; 674 shares were surrendered from an award granted on April 29, 2024; 850 shares were surrendered from an award granted on April 11, 2025; and 677 shares were surrendered from an award granted on February 9, 2026. All four dispositions were executed at the same price of $77.32 per share. Following these transactions, Chang's directly held beneficial ownership stood at 244,135 shares, according to the filing.

The Form 4 was signed by David C. Kuo as attorney in fact for Hung-Lun (Fred) Chang and was filed on October 26, 2026. No derivative securities transactions were reported. The filing notes that ownership of all shares listed is direct.

What Was Disclosed

Chang disclosed four "F"-coded dispositions of Applied Optoelectronics common stock on October 22, 2026, totaling 5,141 shares at $77.32 each, all to satisfy tax-withholding obligations on vesting RSU awards granted between 2023 and 2026, leaving 244,135 shares directly owned.