AVTR DEADLINE: ROSEN, A LEADING INVESTOR RIGHTS LAW FIRM, Encourages Avantor, Inc. Investors to Secure Counsel Before Important Deadline in Securities Class Action - AVTRDecember 09, 2025 7:06 PM EST | Source: The Rosen Law Firm PANew York, New York--(Newsfile Corp. - December 9, 2025) - WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of common stock of Avantor, Inc. (NYSE: AVTR) between March 5, 2024 and October 28, 2025, both dates inclusive (the "Class Period"), o ...