Duolingo, INC Form 4 insider transactions

Duolingo Director Mario Schlosser filed an amended Form 4 to correct an omission of 1,742 Class A Common Stock shares from a previous beneficial ownership report.

Duolingo Director Bonnie Ross filed an amended Form 4 to correct an omission of 965 Class A Common Stock shares, increasing her reported beneficial ownership to 1,344 shares.

Duolingo Co-Founder and CTO Severin Hacker converted 50,000 Class B shares to Class A and subsequently gifted 50,000 Class A shares.

Duolingo's Chief Engineering Officer, Natalie Glance, exercised stock options to acquire 9,500 shares of Class A Common Stock at $5 per share.

Duolingo CTO Severin Hacker reported multiple transactions involving Class A and Class B common stock, including PSU vesting, option exercise, and tax-related dispositions.

Duolingo's President & CEO, Luis von Ahn, reported the conversion of performance-based restricted stock units and a subsequent disposition of Class B common stock for tax purposes, effective December 1, 2025.

Duolingo Co-Founder and CTO Severin Hacker sold 10,000 shares of Class A Common Stock for over $1.7 million through a pre-arranged trading plan.

Duolingo's General Counsel, Stephen C. Chen, reported sales of Class A Common Stock totaling 2,796 shares, primarily under a pre-arranged 10b5-1 trading plan.

Duolingo's Chief Financial Officer, Matthew Skaruppa, reported sales of Class A Common Stock totaling 5,858 shares for tax obligations and under a pre-arranged trading plan.

Duolingo's Chief Engineering Officer, Natalie Glance, reported sales of Class A Common Stock totaling 5,005 shares, primarily under a pre-arranged trading plan and for tax obligations.

Duolingo's Chief Business Officer, Robert Meese, sold 1,444 shares of Class A Common Stock at $177.95 per share to cover tax withholding obligations related to RSU vesting.

Duolingo's Co-Founder and CTO, Severin Hacker, executed planned sales of Class A Common Stock totaling 9,900 shares at prices up to $266.87, while also converting derivative securities.

Duolingo Co-Founder and CTO Severin Hacker executed a series of transactions, including exercising stock options, vesting performance-based restricted stock units, converting Class B to Class A shares, and selling Class A shares under a Rule 10b5-1 plan.

Duolingo CEO Luis von Ahn reported transactions involving performance-based restricted stock units, Class B common stock conversions, and tax-related dispositions.

Duolingo Co-Founder and CTO Severin Hacker sold 10,000 shares of Class A Common Stock for approximately $3.2 million, following the exercise of stock options and conversion of Class B shares, all under a pre-arranged 10b5-1 trading plan.

Duolingo's Chief Engineering Officer, Natalie Glance, sold 3,283 shares of Class A Common Stock on October 1, 2025, through a pre-arranged 10b5-1 trading plan.

Duolingo Co-Founder and CTO Severin Hacker executed a series of stock option exercises and subsequent sales of Class A Common Stock totaling 10,000 shares under a pre-arranged 10b5-1 trading plan.

Duolingo's General Counsel, Stephen C. Chen, exercised options to acquire 1,700 shares of Class A Common Stock at $14.42 per share.

Duolingo's Chief Business Officer, Robert Meese, exercised stock options to acquire 5,000 shares of Class A Common Stock at $8.15 per share in a pre-planned transaction.

Duolingo Co-Founder and CTO Severin Hacker sold 9,900 Class A Common Stock shares on September 5, 2025, following the exercise of options and conversion of Class B shares, all under a Rule 10b5-1 plan.

Duolingo's General Counsel, Stephen C. Chen, reported the sale of 1,515 shares of Class A Common Stock for $321.36 per share, executed under a pre-arranged 10b5-1 trading plan.

Duolingo's Chief Financial Officer, Matthew Skaruppa, exercised stock options and subsequently sold a portion of his Class A Common Stock under a pre-arranged trading plan.

Duolingo Co-Founder and CTO Severin Hacker reported the conversion of Class B shares to Class A and subsequent gifting of Class A shares.

Duolingo's Co-Founder and CTO, Severin Hacker, executed pre-planned sales of Class A Common Stock and exercised options for Class B Common Stock.

Duolingo's Chief Engineering Officer, Natalie Glance, reported the sale of 2,471 Class A Common Stock shares and a gift of 187 shares, all executed on August 18, 2025.

Duolingo's General Counsel, Stephen C. Chen, sold 1,282 shares of Class A Common Stock to cover tax withholding obligations related to RSU vesting.

Duolingo's Chief Financial Officer, Matthew Skaruppa, sold 2,797 shares of Class A Common Stock at $329.03 per share to cover tax withholding obligations related to RSU vesting.

Duolingo's Chief Engineering Officer, Natalie Glance, sold 2,533 shares of Class A Common Stock to cover tax withholding obligations related to RSU vesting.

Duolingo's Chief Business Officer, Robert Meese, sold 1,444 shares of Class A Common Stock for $329.03 per share to cover tax withholding obligations related to RSU vesting.

Duolingo General Counsel Stephen C. Chen reported gifting 750 shares of Class A Common Stock, reducing his direct beneficial ownership to 35,435 shares.