Director Reeve Emma's Stock Transactions in PTC Therapeutics, Inc.

On October 30, 2025, Reeve Emma, a director of PTC Therapeutics, Inc., engaged in several transactions involving the company's common stock. Emma sold 3,666 shares at $69.50 per share, reducing her holdings to 6,666 shares. She also acquired 12,000 shares at $38.10 per share, increasing her holdings to 18,666 shares. Subsequently, she sold 12,000 shares at $69.50 per share, bringing her holdings back to 6,666 shares. Additionally, Emma exercised stock options for 12,000 shares at $38.10 per share, which were then sold. These transactions were executed under a Rule 10b5-1 trading plan adopted on March 4, 2025.