A Form 4 filed on September 10, 2026 discloses that Hung-Lun (Fred) Chang, Senior Vice President and North America General Manager of Applied Optoelectronics, Inc. (NASDAQ:AAOI), sold 32,172 shares of common stock on September 8, 2026.

Key Highlights

  • Shares sold: Hung-Lun (Fred) Chang disposed of 32,172 shares of Applied Optoelectronics common stock on September 8, 2026.
  • Weighted average price: The reported sale price was $110.21 per share, reflecting a weighted average across multiple transactions.
  • Price range: Actual sale prices ranged from $110.00 to $110.76 per share across the multiple transactions.
  • Remaining ownership: Following the sale, Chang beneficially owns 249,276 shares directly.
  • Role of reporting person: Chang serves as Senior Vice President and North America General Manager of the company.
  • Signing authority: The form was signed by David C. Kuo as attorney in fact for Hung-Lun (Fred) Chang.

Details of Hung-Lun (Fred) Chang's September 2026 Share Sale at Applied Optoelectronics

According to the Form 4 filed with the SEC on September 10, 2026, Hung-Lun (Fred) Chang, who serves as Senior Vice President and North America General Manager at Applied Optoelectronics, Inc. (NASDAQ:AAOI), disposed of 32,172 shares of the company's common stock (par value $0.001 per share) on September 8, 2026. The transaction is coded "S," indicating an open-market sale, and is reported as a direct ownership transaction.

The filing discloses that the shares were sold across multiple transactions at actual prices ranging from $110.00 to $110.76 per share. The price of $110.21 reflected in the filing represents the weighted average sale price for all transactions on that date. Per the filing, Chang "undertakes to provide upon request by SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold during each transaction."

Following the reported sale, Chang's direct beneficial ownership of Applied Optoelectronics common stock stands at 249,276 shares, according to the filing. No derivative securities transactions were reported in Table II of the form. The filing was signed by David C. Kuo as attorney in fact for Hung-Lun (Fred) Chang and submitted on September 10, 2026.

What Was Disclosed

Applied Optoelectronics officer Hung-Lun (Fred) Chang filed a Form 4 reporting the sale of 32,172 shares of common stock on September 8, 2026, at a weighted average price of $110.21, leaving him with direct beneficial ownership of 249,276 shares.