Form 4 Filing for Alto Neuroscience, Inc. - Insider Transaction

This Form 4 filing details a transaction by Andrew Craig Miller, a director at Alto Neuroscience, Inc. On May 27, 2026, Mr. Miller was granted 26,000 stock options for common stock, with a purchase price of $0.00 per share, as per the company's Non-Employee Director Compensation Policy. These options vest in 36 equal monthly installments starting June 27, 2026, contingent upon continuous service. The options are exercisable at $20.44 per share and expire on May 26, 2036. Following this transaction, Mr. Miller holds 26,000 shares. This transaction is classified as an acquisition of a derivative security.