SAN FRANCISCO, CA – (November 14, 2025) – National plaintiffs law firm Lieff Cabraser Heimann & Bernstein, LLP encourages investors in Avantor, Inc. (“Avantor” or the “Company”) (NYSE: AVTR) who purchased or otherwise acquired Avantor common stock between March 5, 2024 and October 28, 2025, inclusive (the “Class Period”) to contact us immediately regarding the pending securities class action against Avantor. The deadline to apply to be lead plaintiff is December 29, 2025.
Class Period: March 5, 2024 – October 28, 2025
Lead Plaintiff Motion Deadline: December 29, 2025
Case information: https://lieffcabraser.com/securities/avantor/
Contact us: Email or text investorinfo@lchb.com or call 1-800-541-7358
Avantor, incorporated in Delaware and headquartered in Radnor, Pennsylvania, is a global supplier of scientific products, tools, laboratory solutions, and services to customers in the biopharma, healthcare, education & government, and advanced technologies & applied materials industries.
The action alleges that, throughout the Class Period, Defendants made false and/or misleading statements and/or failed to disclose that: (1) Avantor’s competitive positioning was weaker than Defendants had publicly represented; and (2) Avantor was experiencing negative effects from increased competition. Rather, Defendants repeatedly claimed that Avantor was well-positioned compared to peer companies and downplayed any competitive pressures.
The market began to learn the truth on April 25, 2025, when Avantor reported disappointing 1Q 2025 financial results, including weak organic sales for its Laboratory Solutions business, and cut its projected organic revenue growth for 2025 by 2% to -1% to 1%. Avantor also announced that Defendant Stubblefield would be stepping down from his roles. Avantor’s Executive Vice President and CFO, Defendant R. Brent Jones, attributed the Company’s weak performance and outlook in part to “the impact of increased competitive intensity.” On this news, the price of Avantor common stock declined $2.57 per share, or 16.58%, from a close of $15.50 per share on April 24, 2025, to close at $12.93 per share on April 25, 2025, on extremely heavy trading volume.
On August 1, 2025, Avantor reported disappointing 2Q 2025 financial results, including a 3% year-over-year decrease in net sales and an 11.7% year-over-year decrease in adjusted operating income in its Laboratory Solutions business. The Company also lowered its projected organic revenue growth for 2025 to -2% to 0%, and to -4% to -2% for 3Q 2025. Jones again attributed the reduced outlook and growth to “increased competitive intensity.” On this news, the price of Avantor common stock declined $2.08 per share, or 15.48%, from a close of $13.44 per share on July 31, 2025, to close at $11.36 per share on August 1, 2025, on extremely heavy trading volume.
On October 29, 2025, Avantor reported disappointing 3Q 2025 financial results, including a 5% year-over-year decrease organic revenue growth both in its Laboratory Solutions business and overall. Avantor further reduced its 2025 projected organic revenue growth -3.5% to -2.5%, and reported a noncash goodwill impairment charge of $785 million. Jones disclosed that the impairment charge was due in part to competitive pressures on the Company’s “ability to get price, which meaningfully impacted margins year-over-year on a sequential basis.” New President and CEO Emmanuel Ligner disclosed that the Company had “lost a couple of large accounts.” On this news, the price of Avantor common stock declined $3.50 per share, or 23.21%, from a close of $15.08 per share on October 28, 2025, to close at $11.58 per share on October 29, 2025, on heavy trading volume.
About Lieff Cabraser
Lieff Cabraser Heimann & Bernstein, LLP, with over 125 attorneys in offices in San Francisco, New York, Nashville, and Munich, Germany, is an internationally-recognized law firm committed to advancing the rights of investors and promoting corporate responsibility. Repeatedly recognized as a “Plaintiffs’ Powerhouse” by Law360, Lieff Cabraser has litigated some of the most important civil cases in the United States, and has assisted clients in recovering over $129 billion in verdicts and settlements. For over 50 years, Lieff Cabraser has remained committed to ensuring access to justice for all
Source/Contact
Sharon Lee
Lieff Cabraser Heimann & Bernstein, LLP
415 956-1000
slee@lchb.com
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