Avantor Investors Courted to Lead Securities Class Action Filed in Eastern Pennsylvania

Overview

• The lawsuit, captioned Building Trades Pension Fund of Western Pennsylvania v. Avantor, Inc., No. 25-cv-06187, was filed in the U.S. District Court for the Eastern District of Pennsylvania.
• The putative class covers purchases of Avantor common stock from March 5, 2024 through October 28, 2025.
• Plaintiffs allege Avantor and certain executives misrepresented the company’s competitive position and failed to disclose negative impacts from rising competition, asserting violations of §§10(b), 20(a) and SEC Rule 10b-5.
• The complaint ties stock declines to three disclosures on April 25, 2025 (over 16%), August 1, 2025 (over 15%), and October 29, 2025 (over 23%), citing weaker results and guidance.
• Multiple investor firms, including Robbins Geller, Bernstein Liebhard, The Schall Law Firm, DJS Law Group, Johnson Fistel, Rosen Law Firm, and Howard G. Smith, are soliciting affected shareholders, while no class has been certified and the allegations remain unproven.