Chang Hung-Lun (Fred) 4

What Happened
Fred Chang, Senior Vice President and North America General Manager of Applied Optoelectronics, sold 4,000 shares of AAOI in an open-market transaction on June 5, 2026. The filing reports a weighted-average sale price of $200.07 per share, for aggregate proceeds of approximately $800,280. This was a sale (not a purchase); sales by insiders are often routine and do not by themselves indicate company performance or insider sentiment.

Key Details

• Transaction date: June 5, 2026; Filing date: June 8, 2026 (three calendar days later; appears to meet the SEC’s Form 4 timing requirements—generally within two business days).
• Reported transaction: Open-market sale of 4,000 shares (code S).
• Price(s): Weighted-average $200.07; actual sale prices ranged from $200.00 to $200.37 per share (footnote).
• Proceeds: Approximately $800,280.
• Shares owned after the transaction: Not disclosed in the provided filing.
• Footnote: The filing notes the sale occurred in multiple transactions on June 5, 2026; the weighted-average is reported and the reporting person will provide a per-transaction breakdown upon request.

Context
This was a straightforward open-market sale by an executive. For retail investors, purchases by insiders can be more informative as potential bullish signals; sales can reflect many reasons (diversification, tax planning, routine selling) and are not definitive indicators of company prospects. The filing contains no option exercises, awards, or gifts related to this transaction.