Avantor, Inc. Investors Can Lead Class Action Against Company Over Losses

Robbins Geller Rudman & Dowd LLP's Announcement of Class Action against Avantor, Inc.

On November 3, 2025, Robbins Geller Rudman & Dowd LLP issued a statement inviting distressed investors of Avantor, Inc. (NYSE: AVTR) to contemplate leading a class action lawsuit against the firm. Dubbed as Building Trades Pension Fund of Western Pennsylvania v. Avantor, Inc., this case forms part of a broader effort to hold the company accountable for significant financial losses reportedly incurred by its investors.

The class action aims to represent individuals who acquired Avantor common stock during a specified period. The firm has accused Avantor, along with some of its current and former executives, of breaching the Securities Exchange Act of 1934 by failing to disclose crucial information about the company’s competitive standing and performance. According to the allegations, Avantor portrayed a more favorable scenario than what existed in reality, misleading shareholders and investors alike.

The Nature of the Allegations

The crux of the allegations lies in the assertion that during certain critical phases in 2025, Avantor did not adequately inform its investors of underlying issues that were prompting declining sales and challenging operating conditions. On April 25, 2025, Avantor's release of its first-quarter financial results highlighted unfavourable organic sales in their Laboratory Solutions segment, prompting a reduction in the overall guidance for 2025. The company’s Chief Financial Officer, R. Brent Jones, acknowledged that Avantor felt the adverse effects of increased competitive pressures, leading to reduced volumes in their customer base. Subsequently, this revelation led to a dramatic 16% drop in the share price of Avantor, according to the complaint.

Moreover, Adventor's subsequent announcements further exacerbated investor concerns, with an August report reflecting subpar second-quarter results and an altered prediction for the rest of the year. CFO Jones explicitly linked the lesser performance of the Laboratory Solutions segment to intensified competition, predicting an unchanging competitive landscape for the rest of 2025. This resulted in yet another hit to the stock price, which plummeted by over 15% following these disclosures.

The culmination of these financial results came at the end of October 2025, where Avantor revealed a deteriorating financial outlook for the third quarter, indicating a 5% decline in organic revenue growth, contradicting previous hopeful statements. This news pushed Avantor’s share price down by more than 23%, endorsing claims made in the class action.

The Process for Becoming a Lead Plaintiff

According to the provisions of the Private Securities Litigation Reform Act of 1995, any investor who purchased or acquired Avantor common stock during the relevant timeframe is eligible to seek the position of lead plaintiff in this class action lawsuit. The lead plaintiff is expected to maximize the interests of the class members and act on their behalf throughout the legal process. Interestingly, an investor’s participation as a lead plaintiff does not limit other investors from any potential recovery as a member of the class.

Robbins Geller Rudman & Dowd LLP has a noted history of representing investors facing securities fraud and shareholder litigation, having secured precedence in significant recovery cases across various high-stakes scenarios over the years. Their team of skilled attorneys aims to represent the investors of Avantor and ensure that their demands are heard in court.

For investors sustained losses due to their investments in Avantor, opportunities to take action are rapidly approaching, with lead plaintiff motions needing to be submitted to the court by December 29, 2025. Investors interested are encouraged to reach out to Robbins Geller for more information and to discuss potential representation.

This development in the case of Avantor represents an essential aspect of investor rights in trading and securities, emphasizing the importance of transparency and accountability in corporate communications. As Robbins Geller Rudman & Dowd LLP moves forward with this class action lawsuit, it remains a significant reminder to corporations regarding their obligations to their shareholders and the implications that misrepresentation can bear on company integrity and investor trust.