Duolingo, Inc.'s SEC filings document its Nasdaq-listed Class A common stock, operating results furnished on Form 8-K, and governance matters presented through proxy materials. The filings cover quarterly and annual financial-result releases, preliminary operating metrics, shareholder-letter exhibits and amendments to furnished earnings materials.
Duolingo filings also record capital-allocation disclosures, including a share repurchase authorization, and public-company governance items such as annual meeting proposals, board and committee matters, executive compensation, equity awards and leadership appointments. These records describe the company's reporting controls, stockholder voting framework and corporate actions as a public mobile learning platform.
Duolingo, Inc. President & CEO and Co-Founder Luis von Ahn exercised options covering 110,046 shares at $38.08 per share on October 7, 2026; the resulting Class B shares converted one-for-one into Class A shares. He sold 110,046 Class A shares that day under a Rule 10b5-1 trading plan adopted June 2, 2026. The options were fully vested and exercisable, with an expiration date of December 2, 2030.
Duolingo, Inc. is the issuer in a Rule 144 notice listing 110,046 common shares for sale for Luis von Ahn Arellano’s account, with an aggregate market value of $16,301,113.98. The shares are listed as acquired from the issuer through exercise of stock options on October 7, 2026, with cash payment.
Duolingo, Inc. President & CEO and Co-Founder Luis von Ahn exercised options covering 46,682 shares on September 24, 2026, at an exercise price of $38.0800 per share. The options were fully vested and exercisable, and 110,046 shares subject to options were reported following the exercise. He converted the 46,682 Class B shares one-for-one into Class A Common Stock.
Von Ahn also sold 46,682 Class A shares in three entries on September 24, 2026: 38,758 shares at a weighted average price of $150.4501, 7,024 at $151.4220, and 900 at $152.2900. The sales were made under a Rule 10b5-1 trading plan adopted June 2, 2026.
Duolingo, Inc. lists an intended sale for the account of Luis von Ahn Arellano of 46,682 common shares on September 24, 2026, with an aggregate market value of $6,814,638.36. The listed acquisition is an exercise of stock options from the issuer for cash. The past-three-months section lists five sales labeled 10b5-1 for Arellano and Luis von Ahn Foundation.
Duolingo, Inc. President & CEO and Co-Founder Luis von Ahn exercised stock options on September 21 and 22, 2026, including options for 27,960 shares at $14.4200 and for 9,406 and 3,614 shares at $38.0800. The Class B shares were converted into Class A shares. He sold 40,980 Class A shares across those dates under a Rule 10b5-1 trading plan adopted June 2, 2026. On September 21, sales included 33,257 shares at a weighted average $150.4641 and 4,109 at a weighted average $151.0699; on September 22, sales included 200 shares at $150.0000 and 3,414 at $152.0200.
Duolingo, Inc. (DUOL) received a Rule 144 notice that Luis Von Ahn Arellano plans to sell up to 3,614 shares of Duolingo common stock, expected around September 22, 2026, through Morgan Stanley Smith Barney, in connection with an exercise of stock options for cash.
The notice also lists prior Rule 10b5-1 plan sales over the past three months by Luis Von Ahn Arellano and the Luis Von Ahn Foundation.
Duolingo, Inc. (DUOL) is the issuer for a proposed Rule 144 sale by the Luis von Ahn Foundation. The filing covers the planned sale of 34,992 shares of Duolingo common stock, with an aggregate market value of $4,965,364.80, against 40,387,012 shares outstanding as of the notice.
The shares are held at Morgan Stanley Smith Barney LLC Executive Financial Services and are identified as founders shares originally acquired from the issuer on August 25, 2011. The approximate sale date stated is September 21, 2026. Recent Rule 10b5-1 plan sales over the prior three months are also disclosed for both Luis von Ahn Arellano and the foundation.
Duolingo, Inc. (DUOL) has a notice of proposed sale of securities filed on behalf of Luis Von Ahn Arellano for up to 37,366 shares of common stock. The shares are to be sold on or after September 21, 2026 through Morgan Stanley Smith Barney, following acquisition via exercise of stock options for cash.
The filing also lists recent Rule 10b5-1 plan sales on September 16, 2026 of 28,292 shares of common stock for Luis Von Ahn Arellano and 19,008 shares for the Luis Von Ahn Foundation, with stated aggregate sale values.
Duolingo, Inc. (DUOL) President & CEO and Co-Founder Luis von Ahn reported option exercises, share conversions, and sales on September 16, 2026. He exercised stock options for 23,040 shares at a $14.42 exercise price and 5,252 shares at $38.08, receiving Class B shares that were converted into Class A shares.
He then sold 27,272 Class A shares at a weighted average price of $150.1749 (in trades from $150.00–$150.54) and 1,020 Class A shares at a weighted average of $151.54 (from $151.53–$152.55), all under a Rule 10b5-1 trading plan adopted on June 2, 2026.
Duolingo, Inc. (DUOL) is the issuer in a notice that Luis Von Ahn Arellano plans to sell Duolingo common stock under Rule 144. The filing reports an intended sale of 28,292 shares of common stock, to be sold through Morgan Stanley Smith Barney LLC, with shares obtained via a cash exercise of stock options from the issuer.
The filing lists an aggregate market value for the planned sale of about $4.35 million and states that Duolingo has 40,387,012 shares of common stock outstanding as of the notice date, with trading on NASDAQ.