Welcome to our dedicated page for Duolingo SEC filings (Ticker: DUOL), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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. (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.
Stephen Chen filed a Form 144 relating to a proposed sale of 1,024 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services. The filing also lists a prior sale of 1,977 shares of common stock on 05/18/2026 for $224,602.82.
Duolingo, Inc. insider Natalie Glance filed a notice to sell 2,751 shares of common stock of DUOL through Morgan Stanley Smith Barney LLC Executive Financial Services, with an aggregate market value of $355,239.66. The planned sale is listed for August 17, 2026 on NASDAQ and involves restricted stock held from the issuer.
The filing also reports that during the past three months, on May 18, 2026, Glance sold 3,360 shares of DUOL common stock for aggregate proceeds of $381,656.35.
Duolingo, Inc. insider Luis von Ahn reported his beneficial ownership of Class A common stock in an amended Schedule 13G. As of June 30, 2026, he beneficially owned 3,594,120 shares of Class A common stock, representing 8.2% of the Class A shares outstanding, based on 40,387,012 shares outstanding as of August 4, 2026. This includes 3,368,120 shares issuable upon conversion of Class B common stock on a one-for-one basis and 226,000 shares underlying stock options exercisable within 60 days of June 30, 2026. He reports sole voting and dispositive power over all 3,594,120 shares.
KRAWCHECK SALLIE reported acquisition or exercise transactions in this Form 4 filing.
Duolingo, Inc. director Sallie Krawcheck reported two equity awards of Class A Common Stock in the form of restricted stock units (RSUs). One grant of 1,312 RSUs vests 100% on the earlier of the first anniversary of the August 10, 2026 grant date or the next annual stockholder meeting, subject to continued service. A separate grant of 3,280 RSUs vests over three years: one-half on August 10, 2027 and one-fourth on each of August 10, 2028 and August 10, 2029, also conditioned on continued service.