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. (DUOL) received a notice under Rule 144 that the Luis von Ahn Foundation plans to sell 19,008 shares of Duolingo common stock. The shares are held in a brokerage account at Morgan Stanley and were originally acquired as founders shares from Duolingo on August 25, 2011.
The planned sale is expected around September 16, 2026. The filing reports an aggregate market value for the shares of $2,925,711.36 and states that 40,387,012 Duolingo common shares are outstanding, with the stock listed on NASDAQ.
Duolingo, Inc. reported that its General Counsel, Stephen C. Chen, sold a total of 8,072 shares of Class A Common Stock on September 14, 2026. The sales were executed in two tranches at per-share prices of $147.43 and $150.00, and were effected pursuant to a Rule 10b5-1 trading plan adopted on June 14, 2026.
Duolingo, Inc. (DUOL) is the issuer for a Rule 144 notice filed by officer Stephen Chen covering a proposed sale of 8,072 shares of common stock through Morgan Stanley Smith Barney LLC on or about September 14, 2026. The shares relate to 2,107 shares from Restricted Stock Units with a date of August 15, 2026 and 5,965 shares from previously exercised stock options dated June 28, 2024. The filing reports an aggregate market value of $1,159,784.96 for the planned sale and notes that 40,387,012 common shares were outstanding. It also discloses that Chen sold 1,024 shares of common stock in the prior three months on August 17, 2026 for $132,229.12.
Duolingo, Inc. (DUOL) director William B Gordon reported selling 10,000 shares of Class A Common Stock on September 8, 2026 in multiple open-market transactions at weighted-average prices between about $143 and $152 per share. The sales were made under a Rule 10b5-1 trading plan adopted on June 9, 2026.
Duolingo, Inc. (DUOL) is the subject of a notice under Rule 144 indicating that director William B. Gordon plans a potential resale of 20,000 shares of common stock through Morgan Stanley Smith Barney LLC. The filing cites an approximate aggregate market value of $3,089,200 and notes 40,387,012 shares outstanding as of the notice.
The shares were originally acquired through pro rata distributions in kind from KPCB Holdings, Inc., as nominee, during the period from February 13, 2014 through May 21, 2015.
Duolingo, Inc. (symbol DUOL) reported that Chief Engineering Officer Natalie Glance disclosed several transactions in Duolingo Class A Common Stock. On August 17, 2026, 2,751 shares were automatically sold to satisfy tax withholding obligations upon vesting of restricted stock units. On August 18, 2026, she sold 502 shares at a weighted average price of $137.0094 and 1,037 shares at a weighted average price of $138.1870, both effected pursuant to her Rule 10b5-1 trading plan adopted on September 15, 2025. A separate entry reflects indirect ownership of 130 shares held "By son."
Duolingo, Inc. (DUOL) reports that Chief Business Officer Robert Meese sold 1,354 shares of Class A common stock on 2026-08-17 at $129.13 per share. According to a footnote, these shares were automatically sold to satisfy tax withholding obligations related to vesting restricted stock units. After this sale, Meese directly holds 169,391 shares of Class A common stock and also has indirect ownership interests through two qualified minor’s trusts.
Duolingo, Inc. (DUOL) reported that Stephen C. Chen, General Counsel, had 1,024 shares of Class A common stock sold on 2026-08-17 at $129.13 per share. According to the company disclosure, these shares were automatically sold to satisfy tax withholding obligations upon vesting of restricted stock units, and Chen now holds 51,841 shares directly.
Duolingo, Inc. (symbol DUOL) reported that, during an in-person investor meeting on August 18, 2026, a screen inadvertently showed internal data indicating the estimated DAU growth rate on August 17, 2026 was 27.4% compared with the same day a year earlier, with similar estimated growth for earlier days in August. Duolingo states this preliminary internal data has not undergone its normal review and validation and should not be interpreted as indicating expected results for Q3 2026 or any future period. The company reiterates that its most recent guidance remains that provided in its Q2 2026 shareholder letter dated August 5, 2026 and that it is not providing additional or updated guidance at this time.
Duolingo, Inc. (DUOL) received a Rule 144 notice from officer Natalie Glance covering a potential sale of Duolingo Class A common stock. The planned transaction involves 1,539 shares to be sold through Morgan Stanley Smith Barney LLC, relating to Restricted Stock Units with an acquisition date of 08/15/2026 and an anticipated sale date of 08/18/2026 on NASDAQ.
The notice also lists prior sales by Natalie Glance over the past three months, including the sale of 2,751 shares of common stock on 08/17/2026 for an aggregate amount of $355,239.66. This is a compliance filing indicating an intention and record of insider share sales rather than a change to Duolingo’s operations or financial results.