Form 4 Filing for David C. Chang

This filing details a transaction by David C. Chang, a director at AXT INC (AXTI). On June 15, 2026, Mr. Chang disposed of 8,333 shares of Common Stock at a price of $111.1715 per share. Following this transaction, Mr. Chang directly owns 65,165 shares of AXT INC stock. The filing was signed by Jeff Sensiba, Attorney-in-Fact, on June 17, 2026.