Form 4 Filing for Luis von Ahn

Luis von Ahn, President & CEO, Co-Founder of Duolingo, Inc., reported several transactions on September 16, 2026. Von Ahn acquired 23,040 shares of Class A Common Stock at $14.42 per share and 5,252 shares at $38.08 per share. Additionally, von Ahn disposed of 27,272 shares of Class A Common Stock at a weighted average price of $150.1749 and 1,020 shares at a weighted average price of $151.54. These sales were executed under a Rule 10b5-1 trading plan. The filing also details the exercise of stock options and conversions related to Class B Common Stock, which is convertible into Class A Common Stock.