Alto Neuroscience Announces Pricing of $100.0 Million Underwritten Registered Direct Offering of Common Stock

Alto Neuroscience, Inc., a clinical-stage biopharmaceutical company with a mission to redefine psychiatry by leveraging neurobiology to develop personalized and highly effective treatment options, announced today the pricing of an underwritten registered direct offering of 3,776,436 shares of its common stock at a price of $26.48 per share. All of the shares are being offered by Alto. The gross proceeds from the offering are expected to be approximately $100.0 million, before deducting underwriting discounts and commissions and estimated offering expenses. The offering is expected to close on July 14, 2026, subject to customary closing conditions.