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.
This page provides access to Duolingo, Inc. (NASDAQ: DUOL) SEC filings, offering investors and researchers a structured view of the company’s regulatory disclosures. Duolingo’s Class A common stock is registered under Section 12(b) of the Exchange Act and trades on The Nasdaq Stock Market under the symbol DUOL, as noted in its Form 8-K filings.
For Duolingo, SEC filings such as annual reports on Form 10-K and quarterly reports on Form 10-Q typically contain detailed information about its mobile learning platform, revenue sources, and risk factors. The company has identified four predominant sources of revenue—time-based subscriptions, in-app advertising placement by third parties, the Duolingo English Test, and in-app purchases—so investors can use periodic reports to review how these areas contribute to overall performance over time.
Current reports on Form 8-K, like those referenced in the provided filings, are used by Duolingo to announce material events, including results of operations and financial condition for specific periods. These filings often accompany press releases and shareholder letters that discuss metrics such as bookings, daily active users, and revenue growth. They also confirm the company’s status as a Nasdaq-listed issuer and provide basic security information.
On this page, users can review Duolingo’s historical and recent SEC submissions and take advantage of AI-powered summaries that explain key points in plain language. Real-time updates from the SEC’s EDGAR system help surface new filings as they are released, while AI-generated highlights can assist in understanding complex sections of lengthy documents, including financial statements and management’s discussion and analysis.
In addition to periodic and current reports, investors may also consult proxy statements for governance and compensation information, and Forms 3, 4, and 5 for insider ownership and transaction details when available. Together, these filings offer a comprehensive regulatory record of Duolingo’s activities as a public company.
Duolingo, Inc. General Counsel Stephen C. Chen reported open-market sales of a total of 2,797 shares of Class A common stock on February 17–18, 2026. Reported sale prices ranged from about $110 to $115 per share.
The filing states these shares were automatically sold to satisfy tax withholding obligations tied to the vesting of Restricted Stock Units and share delivery, and were executed under a pre-arranged Rule 10b5-1 trading plan adopted on May 27, 2025. After the last transaction, Chen directly held 30,545 Class A shares.
Duolingo, Inc. Chief Engineering Officer Natalie Glance reported open-market sales of 5,286 shares of Class A common stock on February 17–18, 2026, at prices around the reported trade prices. Some of the shares were automatically sold to cover tax withholding on vested RSUs. After these transactions, she holds 115,380 shares directly and 130 shares indirectly through her son.
Duolingo, Inc. director and Chief Technology Officer Severin Hacker reported equity award activity involving performance-based restricted stock units and Class B common stock. He exercised 60,000 Performance-Based Restricted Stock Units, receiving 60,000 shares of Class B common stock at a stated price of $0.00 per share.
To cover tax obligations associated with this vesting, 30,594 shares of Class B common stock were disposed of through a tax-withholding transaction at $112.57 per share, rather than an open-market sale. Following these transactions, he held 177,193 shares of Class B common stock directly and 2,836,917 shares indirectly through the SBH Trust dated March 10, 2020, of which he is trustee. His remaining Performance-Based Restricted Stock Units totaled 270,000 after the exercise.
Duolingo President & CEO Luis von Ahn exercised performance-based restricted stock units into 120,000 shares of Class B common stock on February 17, 2026. To cover tax obligations, 53,640 Class B shares were disposed of through a tax-withholding transaction at $112.57 per share. Following these transactions, he directly holds 3,352,995 Class B common shares and 540,000 performance-based restricted stock units that vest upon meeting both service and stock price conditions over time.
DUOL affiliate submitted a Form 144 notice relating to Common stock. The filing lists 1,901 Restricted Stock Units associated with Morgan Stanley Smith Barney LLC and records a prior sale by Stephen Chen of 896 shares on 02/17/2026.
Matthew Skaruppa submitted a Section 144 notice to sell 3,986 restricted stock units of common stock, listed as issued on 02/15/2026. The filing also discloses a prior sale of 1,870 common shares on 02/17/2026 for $205,813.32.
The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services at New York Plaza. The filing identifies the securities as Restricted Stock Units to be sold; cash‑flow treatment and planned distribution methods are not stated in the excerpt.
Duolingo, Inc. reports an insider sale notice for restricted stock units. The filing lists 3,545 restricted stock units to be sold as of 02/15/2026 and discloses that 1,741 shares were sold in the past three months on 02/17/2026 for $191,615.50.
A shareholder filed a notice of intent to sell 1,870 shares of common stock through Morgan Stanley Smith Barney, with an aggregate market value of $205,813.32, to be sold on or around 02/17/2026 on the NASDAQ.
The shares to be sold were acquired as restricted stock on 02/15/2026 directly from the issuer in the same amount. Over the prior three months, Matthew Skaruppa previously sold 3,059 common shares on 11/18/2025 for $537,642.80 in gross proceeds.
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.