Jonathan M. Rothberg's Planned Sale of Quantum-Si Inc. Common Stock

Jonathan M. Rothberg, a director of Quantum-Si Inc., has filed a Form 144 notice indicating his intention to sell 26,095 shares of the company's common stock. The shares were acquired on December 31, 2015, through a private purchase from the company. The planned sale is expected to occur on October 16, 2025, with an aggregate market value of approximately $80,166.45. The sale will be facilitated by Jefferies LLC. Rothberg has reported no securities sold in the past three months. The notice was signed on October 16, 2025, and the plan was adopted on September 13, 2024.