Form 4: Duolingo Co-Founder Severin Hacker Exercises Options and Sells Shares Under Pre-Arranged Trading Plan

Duolingo Co-Founder and CTO Severin Hacker exercised stock options and subsequently sold a portion of his Class A Common Stock holdings on June 20, 2025, as part of a pre-established Rule 10b5-1 trading plan.

Summary

• Severin Hacker, Duolingo's Co-Founder, Chief Technology Officer, Director, and 10% Owner, engaged in significant stock transactions on June 20, 2025.
• He exercised stock options to acquire 10,000 shares of Class A Common Stock at an exercise price of $38.08 per share.
• Concurrently, Mr. Hacker sold a total of 9,200 shares of Class A Common Stock through multiple transactions at weighted average prices ranging from $466.4291 to $481.35.
• These sales were conducted under a Rule 10b5-1 trading plan, which was adopted on September 11, 2024.
• Following these transactions, Mr. Hacker directly holds 72 shares of Class A Common Stock.
• He also retains significant indirect beneficial ownership of 2,896,917 Class B Common Stock shares through the SBH Trust dated March 10, 2020, and additional direct holdings of Class B Common Stock.

Sentiment

Score: 5

Explanation: Neutral. This is a routine insider transaction (option exercise and sale) conducted under a pre-arranged 10b5-1 plan. While it involves selling shares, the pre-planned nature makes it a standard event rather than a signal of negative sentiment from the insider.

Positives

• The transactions were executed under a pre-arranged Rule 10b5-1 trading plan, indicating a planned and not reactive sale.
• The exercise of options at a low strike price ($38.08) and subsequent sale at significantly higher market prices (ranging from $466.4291 to $481.35) indicates a substantial personal gain for the insider.

Negatives

• Insider selling, even if pre-planned, can sometimes be perceived negatively by investors as it reduces the insider's direct equity stake in the company.
• The sale of 9,200 shares represents a reduction in direct Class A Common Stock holdings for a key executive and co-founder.

Future Outlook

NA

Industry Context

This is a routine insider transaction filing for a technology company, Duolingo, which operates in the education technology sector. Such filings are common for executives managing their personal portfolios, especially when stock options vest or expire. The use of a 10b5-1 plan is standard practice for insiders to avoid accusations of trading on material non-public information.

Comparison to Industry Standards

• The use of a Rule 10b5-1 trading plan for insider stock sales is a common and accepted practice among executives in publicly traded companies, including those in the technology and education technology sectors, to ensure compliance with insider trading regulations.
• The exercise of stock options and subsequent sale of shares is a typical liquidity event for executives, similar to practices observed at companies like Google (Alphabet), Meta, or Microsoft, where long-tenured executives monetize vested equity.
• The significant difference between the exercise price ($38.08) and the sale price (mid-$400s) is indicative of substantial stock price appreciation, a common characteristic for successful growth companies in the tech industry.

Stakeholder Impact

• Shareholders: The sale by a co-founder and CTO might be viewed with slight caution, but the 10b5-1 plan mitigates concerns about opportunistic selling. The remaining significant indirect holdings (Class B shares) indicate continued alignment with long-term company success.
• Employees: No direct impact.
• Customers: No direct impact.
• Suppliers: No direct impact.
• Creditors: No direct impact.

Key Dates

Recommendation

Keywords

Duolingo, DUOL, Severin Hacker, Insider Trading, Form 4, SEC Filing, Stock Option Exercise, Share Sale, Rule 10b5-1 Plan, Executive Compensation, Technology Sector, Education Technology