Efstathios A. Kouninis' Stock Transactions in Pegasystems Inc.

On October 27, 2025, Efstathios A. Kouninis, the Senior Vice President and Chief Accounting Officer of Pegasystems Inc., engaged in several transactions involving the company's common stock. Kouninis acquired 11,250 shares at $23.64 per share, increasing his holdings to 11,456 shares. He also disposed of 6,825 shares at $67.25 per share, reducing his holdings to 4,631 shares, and sold an additional 4,425 shares at the same price, leaving him with 206 shares. Additionally, Kouninis exercised stock options for 11,250 shares at $23.64 per share, which were subsequently disposed of. These transactions were reported in a Form 4 filing with the SEC.