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.
A holder of common shares filed a notice of proposed sale under Rule 144, planning to sell 1,741 shares through Morgan Stanley Smith Barney LLC on the NASDAQ around 02/17/2026. The aggregate market value of the planned sale is $191,615.50, versus 40,013,533 shares outstanding.
The 1,741 shares were acquired from the issuer as restricted stock on 02/15/2026. The filing also notes that Natalie Glance sold 2,471 common shares on 11/18/2025 for $434,365.97. The seller represents they are not aware of any undisclosed material adverse information about the issuer’s operations.
Duolingo stockholder Stephen Chen has filed a Form 144 notice to sell 896 shares of common stock. The planned sale is to be executed through Morgan Stanley Smith Barney LLC on NASDAQ around 02/17/2026, with an aggregate market value listed as 98614.30 and 40013533 shares outstanding.
The 896 shares were acquired as restricted stock from the issuer on 02/15/2026, with payment also dated 02/15/2026 and described as not applicable for special consideration. The filing also notes that Chen sold 1514 common shares on 11/18/2025, generating gross proceeds of 266265.06 over the prior three months.
Duolingo filed a notice of proposed insider share sales under Rule 144. The filing covers 1,000 shares of common stock with an aggregate market value of $110,060.60, to be sold through Morgan Stanley Smith Barney LLC on the NASDAQ, with an approximate sale date of 02/17/2026.
The shares were acquired as restricted stock from the issuer on 02/15/2026, with 40,013,533 shares of the same class shown as outstanding. The seller represents they are not aware of any undisclosed material adverse information about Duolingo’s current or prospective operations.
Duolingo, Inc. reported that it issued a press release with a preliminary update on certain operating metrics for the quarter ended December 31, 2025, noting that these figures are estimates and may change after normal closing and review procedures. The release is furnished as an exhibit rather than filed, meaning it is not automatically incorporated into other securities filings.
The company also announced a planned chief financial officer transition. Matthew Skaruppa has resigned as CFO, to be succeeded by current director Gillian Munson as chief financial officer, principal financial officer, and principal accounting officer effective February 23, 2026. The company states that neither Skaruppa nor Munson resigned because of any disagreements regarding operations, policies, or practices. Skaruppa will remain in an advisory role through November 20, 2026 under a transition agreement providing a monthly base salary of $32,292, continued RSU vesting, and access to certain benefits. Munson’s offer includes an $800,000 annual base salary and a start-date RSU grant calculated from $14 million in value, vesting over four years, along with defined severance protections, including salary continuation and potential equity acceleration upon certain terminations.
Duolingo, Inc. director Mario Schlosser filed an amended insider ownership report related to a transaction dated June 11, 2025. The amendment corrects a prior filing that accidentally left out 1,742 shares that were beneficially owned after the reported transaction. Following this correction, Schlosser is shown as directly owning 2,121 shares of Duolingo Class A common stock. This update is administrative in nature and does not reflect a new transaction, but rather a clarification of the director's previously reported holdings.
Duolingo, Inc. director updates insider share holdings after prior omission. A reporting person who serves as a director of Duolingo, Inc. (DUOL) has filed an amended insider trading report to correct the number of Class A common shares beneficially owned after a previously reported transaction dated June 11, 2025. The amendment explains that a filing made on June 18, 2025 inadvertently left out an additional 965 shares that were beneficially owned following that transaction.
After including the omitted amount, the director now reports beneficial ownership of 1,344 shares of Duolingo Class A common stock, held directly. The filing is made by a single reporting person and is signed by an attorney-in-fact on the director’s behalf.
Duolingo, Inc. (DUOL) CTO and Co-Founder Severin Hacker, who is also a director and 10% owner, reported insider transactions dated 11/19/2025 on a Form 4. He exercised a stock option for 10,000 shares of Class B Common Stock at an exercise price of $38.08 per share, which are convertible into Class A Common Stock.
On the same date, he sold multiple blocks of Class A Common Stock, including 1,146 shares at a weighted average price of $169.5673 and additional sales at weighted average prices up to $176.6814, all under a Rule 10b5-1 trading plan adopted on September 11, 2024. After these transactions, he beneficially owned 72 shares of Class A Common Stock directly and 2,886,917 shares of Class A Common Stock indirectly through SBH Trust dated March 10, 2020.
Duolingo, Inc. (DUOL) reported insider share sales by its General Counsel on a Form 4. On 11/17/2025, the officer sold 1,282 shares of Class A common stock at $177.95, described as an automatic sale to cover tax withholding from vesting Restricted Stock Units. On 11/18/2025, additional sales of 120, 594, 320, and 480 shares were executed at weighted average prices of $173.97, $175.1512, $175.9363, and $177.1858, respectively.
The filing notes that the 11/18/2025 sales were made under a Rule 10b5-1 trading plan adopted on May 27, 2025, meaning they were pre-scheduled. After these transactions, the reporting person beneficially owns 31,542 shares of Duolingo Class A common stock, held directly.
Duolingo, Inc. (DUOL) reported insider share sales by its Chief Financial Officer on a Form 4. On 11/17/2025, the CFO disposed of 2,799 shares of Class A common stock at a price of $177.95 per share, with the filing noting this sale was to cover tax withholding tied to vesting restricted stock units. On 11/18/2025, additional sales totaling several thousand shares occurred in multiple trades at weighted average prices between about $174 and $178 per share under a Rule 10b5-1 trading plan adopted on May 27, 2025. Following these transactions, the CFO beneficially owned 37,487 shares of Duolingo Class A common stock.
Duolingo, Inc. (DUOL) reported insider stock activity by its Chief Engineering Officer. A Form 4 shows that on 11/17/2025, 2,534 shares of Class A common stock were sold at $177.95 to satisfy tax withholding obligations related to vesting of restricted stock units. On 11/18/2025, additional open-market sales were executed under a Rule 10b5-1 trading plan adopted on November 14, 2024, including 160 shares at a weighted average price of $173.7975 and several other small blocks at weighted average prices between $174.9689 and $177.6025, each reflecting multiple trades within disclosed price ranges. After these transactions, the reporting person beneficially owned 111,166 Class A shares directly and 130 shares indirectly through a son.