0001104659-26-083274 Sample Contracts

ALTO NEUROSCIENCE, INC. (a Delaware corporation) 3,776,436 Shares of Common Stock UNDERWRITING AGREEMENT

Underwriting Agreement • July 14th, 2026 • Alto Neuroscience, Inc. • Pharmaceutical preparations • New York

• Contract Type
  Underwriting Agreement
• Filed
  July 14th, 2026
• Company
  Alto Neuroscience, Inc.
• Industry
  Pharmaceutical preparations
• Jurisdiction
  New York

Alto Neuroscience, Inc., a Delaware corporation (the “Company”), confirms its agreement with BofA Securities, Inc. (“BofA”) and each of the other Underwriters named in Schedule A hereto (collectively, the “Underwriters,” which term shall also include any underwriter substituted as hereinafter provided in Section 10 hereof), for whom BofA is acting as representative (in such capacity, the “Representative”) with respect to the sale by the Company and the purchase by the Underwriters, acting severally and not jointly, of the respective numbers of shares of Common Stock, par value $0.0001 per share, of the Company (“Common Stock”) set forth in Schedules A and B hereto. The Common Stock to be sold by the Company are collectively referred to as the “Securities”.