Avantor Investors Face Dec. 29 Deadline to Seek Lead Role in Newly Filed Securities Class Action

Investors allege executives overstated Avantor’s strength, a claim they link to steep losses following weak 2025 results.

Overview

A federal securities class action has been filed for purchasers of Avantor common stock from March 5, 2024 through October 28, 2025.
Faruqi & Faruqi reminds investors they must move by December 29, 2025 to be considered for court-appointed lead plaintiff status.
The complaint contends executives misrepresented Avantor’s competitive position, citing reassuring remarks by then‑CEO Michael Stubblefield on July 26, 2024.
Investors are pointed to sequential 2025 disappointments: April 25 and August 1 disclosures that cut guidance and triggered declines of about 16.5% and 15%, with Stubblefield stepping down in April.
On October 29, 2025, Avantor reported -5% organic revenue growth, a $785 million goodwill impairment, and a $712 million net loss, prompting a one-day share drop of more than 23%, while firms including Robbins LLP and Grabar Law Office continue soliciting affected shareholders and exploring governance claims.