Form 4: Duolingo CEO's Equity Transactions and Vesting Details

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

Summary

• Luis von Ahn, Duolingo's President & CEO, Co-Founder, and 10% Owner, reported transactions on October 20, 2025.
• 120,000 Performance-Based Restricted Stock Units (PSUs) were exercised/converted, resulting in 120,000 shares of Class B Common Stock. Following this, 780,000 PSUs remain beneficially owned.
• 120,000 shares of Class B Common Stock were converted into 120,000 shares of Class A Common Stock. After this conversion, 3,270,171 shares of Class B Common Stock remain beneficially owned.
• 51,768 shares of Class B Common Stock were disposed of for tax withholding purposes, corresponding to 51,768 shares of Class A Common Stock at a price of $312.73 per share. Following this disposition, 3,218,403 shares of Class B Common Stock remain beneficially owned.
• PSUs vest based on a service condition (25% annually from the IPO anniversary, continuous CEO service) and a performance condition (Class A stock price hurdles over 10 years). Vested PSUs are settled by issuing Class B Common Stock one year after vesting.
• Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time and automatically converts under specific conditions, such as certain transfers, when aggregate Class B stock falls below 5% of total common stock, or upon the reporting person's death.

Sentiment

Score: 6

Explanation: The filing details routine executive compensation events, including the vesting and conversion of equity awards and a standard tax-related disposition. The vesting of performance-based units is a positive indicator of management alignment with long-term shareholder value, while the disposition for tax is a common occurrence.

Positives

• The exercise of 120,000 Performance-Based Restricted Stock Units (PSUs) indicates the satisfaction of vesting conditions, aligning management incentives with shareholder value creation.
• The conversion of Class B Common Stock to Class A Common Stock can enhance liquidity for the shares.

Negatives

• The disposition of 51,768 shares of Class A Common Stock for tax withholding purposes represents a reduction in direct beneficial ownership, although it is a standard practice for equity compensation.

Risks

• The vesting of Performance-Based Restricted Stock Units (PSUs) is contingent on the Issuer's Class A common stock achieving certain stock price hurdles over a ten-year period, introducing market performance risk.
• The service-based vesting condition for PSUs requires continuous service as CEO, posing a risk if the reporting person's service ceases for reasons other than death or permanent disability.

Future Outlook

The Performance-Based Restricted Stock Units (PSUs) are tied to the Issuer's Class A common stock achieving certain stock price hurdles over a ten-year period, indicating a long-term incentive structure for the CEO.

Industry Context

NA

Stakeholder Impact

• Shareholders gain insight into the CEO's equity holdings and compensation structure, which aligns management incentives with long-term company performance.

Next Steps

• Continued service by the CEO is required for the service-based vesting condition of the remaining PSUs.
• The Class A common stock will need to achieve specified price hurdles for the performance-based vesting condition of the PSUs to be met.

Key Dates

Recommendation

This Form 4 primarily reports on the routine vesting and conversion of executive equity compensation, along with a standard tax-related disposition. Such transactions are typically pre-scheduled and do not reflect new operational or financial performance data that would warrant a change in investment thesis. The continued holding of significant equity by the CEO, even after the disposition, maintains alignment with shareholder interests. Therefore, a 'hold' recommendation is appropriate as this filing does not present new information to alter the fundamental outlook for Duolingo.

Keywords

Duolingo, DUOL, Luis von Ahn, Form 4, Insider Transaction, CEO, Equity Compensation, Restricted Stock Units, Class A Common Stock, Class B Common Stock, Stock Vesting