Overview

• Rosen Law Firm, The Gross Law Firm, Levi & Korsinsky, and Faruqi & Faruqi are recruiting shareholders to move for lead‑plaintiff appointment by September 19, 2025.
• The notices state that a securities class action has been filed, no class has been certified, and investors can seek to lead the case without upfront fees.
• The proposed class covers purchasers of Alto common stock in the February 2, 2024 IPO and buyers of Alto securities from February 2 through October 22, 2024.
• The complaint alleges Alto overstated ALTO‑100’s efficacy and its clinical, regulatory, and commercial outlook, rendering certain public statements misleading.
• Context for the suit includes Alto’s October 22, 2024 disclosure that ALTO‑100 missed the Phase 2b MADRS primary endpoint, followed by a 69.99% share‑price drop to $4.36 on October 23.