Natalie Glance, Chief Engineering Officer of Duolingo, Inc. (NASDAQ:DUOL), filed a Form 4 on August 19, 2026, disclosing the sale and disposition of Class A Common Stock on August 17 and August 18, 2026.

Key Highlights

  • Tax withholding disposition: 2,751 shares of Class A Common Stock were automatically sold on August 17, 2026, at $129.13 per share to satisfy tax withholding obligations related to vesting restricted stock units.
  • Rule 10b5-1 plan sales: Two separate sales on August 18, 2026, totaling 1,539 shares, were made pursuant to a Rule 10b5-1 trading plan adopted on September 15, 2025.
  • Weighted average prices: The August 18 sales carried weighted average prices of $137.0094 (502 shares, range $136.68 to $137.61) and $138.187 (1,037 shares, range $137.72 to $138.59).
  • Remaining direct ownership: Following all reported transactions, Glance directly holds 169,111 shares of Class A Common Stock.
  • Indirect ownership: An additional 130 shares are held indirectly by Glance's son.

Natalie Glance's Share Transactions at Duolingo, August 2026

According to the filing, Natalie Glance, identified as Chief Engineering Officer of Duolingo, Inc., reported three dispositions of Class A Common Stock across two trading days. On August 17, 2026, 2,751 shares were disposed of at $129.13 per share. The filing states these shares were "automatically sold to satisfy tax withholding obligations in connection with the vesting of restricted stock units and delivery of shares," reducing her directly held position to 170,650 shares.

On August 18, 2026, two additional sales took place under Glance's Rule 10b5-1 trading plan, which the filing states was adopted on September 15, 2025. The first involved 502 shares at a weighted average price of $137.0094, with individual transactions ranging from $136.68 to $137.61 per share. The second covered 1,037 shares at a weighted average price of $138.187, with individual transactions ranging from $137.72 to $138.59 per share. Both sets of transactions were marked with transaction code "S" and designated as dispositions.

After all reported transactions, the filing discloses that Glance directly owns 169,111 shares of Class A Common Stock. An additional 130 shares are held indirectly through her son. The Form 4 was signed by Stephen Chen, as Attorney-in-Fact for Natalie Glance, and filed on August 19, 2026. The filing also notes that Glance undertakes to provide full details on per-share transaction prices within the reported ranges upon request by the SEC staff, the issuer, or a security holder.

What Was Disclosed

The filing disclosed that Duolingo's Chief Engineering Officer disposed of a total of 4,290 shares of Class A Common Stock on August 17 and 18, 2026, through a tax withholding sale and a Rule 10b5-1 plan, leaving her with 169,111 shares held directly and 130 shares held indirectly.