---
title: "Pomerantz LLP Calls Attention to Class Action Against Avantor, Inc. – AVTR"
type: "News"
locale: "zh-CN"
url: "https://longbridge.com/zh-CN/news/265405856.md"
description: "Pomerantz LLP has announced a class action lawsuit against Avantor, Inc. for alleged securities fraud and unlawful business practices. Investors who purchased Avantor securities during the Class Period are encouraged to contact the firm by December 29, 2025, to be considered for Lead Plaintiff. Avantor has faced disappointing financial results throughout 2025, leading to significant stock price declines, attributed to increased competitive intensity and a substantial goodwill impairment charge. Pomerantz LLP specializes in corporate and securities class litigation, advocating for victims of corporate misconduct."
datetime: "2025-11-11T23:00:02.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/265405856.md)
  - [en](https://longbridge.com/en/news/265405856.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/265405856.md)
---

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# Pomerantz LLP Calls Attention to Class Action Against Avantor, Inc. – AVTR

NEW YORK CITY, NY / ACCESS Newswire / November 11, 2025 / Pomerantz LLP announces that a class action lawsuit has been filed against Avantor, Inc. ("Avantor" or the "Company") . Such investors are advised to contact Danielle Peyton at 7980. Those who inquire by e-mail are encouraged to include their mailing address, telephone number, and the number of shares purchased.

The class action concerns whether Avantor and certain of its officers and/or directors have engaged in securities fraud or other unlawful business practices.

You have until December 29, 2025 to ask the Court to appoint you as Lead Plaintiff for the class if you purchased or otherwise acquired Avantor securities during the Class Period. A copy of the Complaint can be obtained at **www.pomerantzlaw.com****.**

\[Click here for information about joining the class action\]

On April 25, 2025, Avantor reported disappointing first quarter 2025 financial results, cut its guidance for 2025, and announced that Michael Stubblefield would be stepping down from his roles as President and Chief Executive Officer. Avantor's management attributed its weak performance and outlook to "the impact of increased competitive intensity."

On this news, Avantor's stock price fell $2.57 per share, or 16.5%, to close at $12.93 per share on April 25, 2025.

Then, on August 1, 2025, Avantor reported disappointing second quarter 2025 financial results, including a year-over-year decrease in net sales, and further reduced the Company's 2025 guidance-now projecting organic revenue growth of -2% to 0%. Avantor's management again attributed the Company's lackluster results and outlook to "increased competitive intensity" and further admitted that Avantor did not expect the competitive environment to materially improve in the remainder of 2025.

On this news, Avantor's stock price fell $2.08 per share, or 15.48%, to close at $11.36 per share on August 1, 2025.

Then, on October 29, 2025, Avantor reported weak third quarter 2025 financial results, including -5% organic revenue growth and a net loss of $712 million, which management primarily attributed to a non-cash goodwill impairment charge of $785 million. Avantor's management said that the impairment charge was necessary due in part to "competitive pressures" that had "meaningfully impacted" Avantor's margins and further disclosed that the Company had lost several large accounts.

On this news, Avantor's stock price fell $3.50 per share, or 23.21%, to close at $11.58 per share on October 29, 2025.

Pomerantz LLP, with offices in New York, Chicago, Los Angeles, London, Paris, and Tel Aviv, is acknowledged as one of the premier firms in the areas of corporate, securities, and antitrust class litigation. Founded by the late Abraham L. Pomerantz, known as the dean of the class action bar, Pomerantz pioneered the field of securities class actions. Today, more than 85 years later, Pomerantz continues in the tradition he established, fighting for the rights of the victims of securities fraud, breaches of fiduciary duty, and corporate misconduct. The Firm has recovered numerous multimillion-dollar damages awards on behalf of class members. See www.pomlaw.com.

Attorney advertising. Prior results do not guarantee similar outcomes.

**SOURCE:** Pomerantz LLP

View the original press release on ACCESS Newswire

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