Quanex Building Products Corporation Securities Lawsuit Investigation

Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in securities fraud cases, is investigating potential claims against Quanex Building Products Corp. (NX)

If you purchased or acquired Quanex Building Products Corporation securities between December 12, 2024 and September 5, 2025, you may be eligible to join this class action lawsuit and seek compensation for your losses.

About Quanex Building Products Corporation

Quanex Building Products is a global manufacturer that supplies engineered components and solutions to the building materials industry. The company’s products are used by original equipment manufacturers (OEMs).

Quanex operates facilities worldwide, including a significant presence in Mexico through its acquisition of Tyman plc, a UK-based building components manufacturer.

The Allegations

The securities class action lawsuit alleges that Quanex and certain executives made false or misleading statements and failed to disclose material problems related to the Tyman Mexico facility.

The complaint claims:

• Quanex’s Tyman Mexico facility was significantly underinvested in tooling and equipment maintenance, leading to severe equipment degradation that approached catastrophic levels.
• These operational issues were identified internally by mid-2025, but were not disclosed to investors until September 2025.
• As a result of these problems, Quanex incurred significant unexpected costs, which delayed the anticipated benefits of the Tyman acquisition and integration.
• The company’s financial results were negatively impacted, with Quanex reporting a diluted EPS of ($6.04) for the third quarter of 2025, compared to $0.77 in the prior year, a dramatic decline of over 800%.
• On September 4, 2025, Quanex announced these operational issues and their impact on earnings. The following day, Quanex’s stock price dropped 13.1%, closing at $18.18 per share.
• The decline continued on September 8, 2025, with the stock falling another 10.9% to $16.20 per share, about a 23% loss over two trading days.

The lawsuit claims that Quanex’s public statements during the class period were materially misleading because they failed to reveal the true condition of the Tyman Mexico facility and the associated risks.

Important Dates

• Class period: December 12, 2024 to September 5, 2025
• Lead plaintiff deadline: November 18, 2025
• Complaint filed: September 19, 2025

Your Rights and Next Steps

If you purchased Quanex securities during the class period, you have important rights. As an investor who may have suffered financial losses due to the alleged misconduct, you could be eligible to join the class action lawsuit.

Here’s what you need to know:

• You do not need to take any action to remain a potential class member at this stage. However, if you wish to be appointed as the lead plaintiff (the investor who acts on behalf of other class members) you must file a motion with the court by November 18, 2025.
• Lead plaintiffs help direct the litigation and may have additional responsibilities, but all class members are eligible for compensation if the case is successful, regardless of whether they serve as lead plaintiff.
• Lawyers are ready to help answer your questions, review your documentation, and guide you through the process. There are no out-of-pocket costs to participate.
• It is important to keep records of your Quanex stock purchases, sales, and holdings during the class period.

You May Be Entitled to Compensation

If you purchased or acquired Quanex securities between December 12, 2024 and September 5, 2025 and experienced losses, you may be eligible to recover compensation as part of this class action. Lawyers are ready to help you understand your options and protect your rights.

To get started, complete the form below to see if you qualify to join the lawsuit.