Avantor Investors Face Dec. 29 Deadline To Seek Lead Role in Securities Class Action

Overview

• Glancy Prongay & Murray and Rosen Law are urging shareholders to move by December 29, 2025 to be appointed lead plaintiff in the case covering trades from March 5, 2024 through October 28, 2025.
• Filings assert that Avantor overstated its competitive position and failed to disclose harmful effects from rising competition, rendering prior statements misleading.
• Investor notices highlight that no class has been certified and that shareholders may pursue potential recovery through contingency-fee arrangements.
• Case materials recount April 25, 2025 disclosures that missed estimates, cut guidance citing increased competitive intensity, and announced the CEO’s departure, which coincided with a 16.6% share drop.
• Subsequent updates reported further shortfalls on August 1 and, on October 29, −5% organic revenue growth, a $712 million net loss and a $785 million goodwill impairment tied in part to competitive pressures, followed by a 23.2% one-day decline.