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Lantheus Holdings, Inc. (LNTH) Investors: November 10, 2025 Filing Deadline in Securities Class Action - Contact Kessler Topaz Meltzer & Check, LLP

Key Takeaway: A securities class action lawsuit has been initiated against Lantheus Holdings, Inc. for allegedly misleading investors during the class period from February 26 to August 5, 2025. The firm Kessler Topaz Meltzer & Check, LLP is seeking lead plaintiffs to represent the interests of affected shareholders. The complaint claims that Lantheus misrepresented its competitive position regarding PYLARIFY, alongside failing to properly disclose significant price increase impacts. Shareholders can participate in the lawsuit by applying to become lead plaintiffs or by remaining as absent class members.

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CONCERNS & RISKS

  • A securities class action lawsuit has been filed against Lantheus Holdings, Inc.
  • Defendants allegedly made false statements about PYLARIFY's competitive position.
  • Concerns over Lantheus's ability to assess pricing and competitive dynamics.
  • Failure to disclose price increases that could impact PYLARIFY's revenue growth.

Full Press Release Details

RADNOR, Pa., Sept. 17, 2025 (GLOBE NEWSWIRE) -- The law firm of Kessler Topaz Meltzer & Check, LLP (www.ktmc.com) informs investors that a securities class action lawsuit has been filed against Lantheus Holdings, Inc. (“Lantheus”) (NASDAQ: LNTH) on behalf of those who purchased or otherwise acquired Lantheus securities between February 26, 2025, and August 5, 2025, inclusive (the “Class Period”). The lead plaintiff deadline is November 10, 2025.
CONTACT KESSLER TOPAZ MELTZER & CHECK, LLP:
If you suffered Lantheus losses, you may CLICK HERE or copy and paste the following link into your browser: https://www.ktmc.com/new-cases/lantheus-holdings-inc?utm_source=Globe&mktm=PR
You can also contact attorney Jonathan Naji, Esq. by calling (484) 270-1453 or by email at info@ktmc.com.
DEFENDANTS’ ALLEGED MISCONDUCT:
The complaint alleges that, throughout the Class Period, Defendants made false and/or misleading statements and/or failed to disclose that: (1) Lantheus provided investors with misleading statements concerning the true state of PYLARIFY’s competitive position, notably, that Lantheus was not equipped to properly assess the pricing and competitive dynamics for PYLARIFY; (2) Lantheus failed to properly disclose that its early 2025 price increase, issued despite price erosion the year prior, created an opportunity for competitive pricing to flourish, risking PYLARIFY's price point, revenue, and overall growth potential; and (3) as a result, Defendants' public statements were materially false and misleading at all relevant times.
Please CLICK HERE to view our video or copy and paste this link into your browser: https://youtu.be/zO1eJHDw73s
THE LEAD PLAINTIFF PROCESS:
Lantheus investors may, no later than November 10, 2025, seek to be appointed as a lead plaintiff representative of the class through Kessler Topaz Meltzer & Check, LLP or other counsel, or may choose to do nothing and remain an absent class member. A lead plaintiff is a representative party who acts on behalf of all class members in directing the litigation. The lead plaintiff is usually the investor or small group of investors who have the largest financial interest and who are also adequate and typical of the proposed class of investors. The lead plaintiff selects counsel to represent the lead plaintiff and the class and these attorneys, if approved by the court, are lead or class counsel. Your ability to share in any recovery is not affected by the decision of whether or not to serve as a lead plaintiff.
Kessler Topaz Meltzer & Check, LLP encourages Lantheus investors who have suffered significant losses to contact the firm directly to acquire more information.
ABOUT KESSLER TOPAZ MELTZER & CHECK, LLP:
Kessler Topaz Meltzer & Check, LLP prosecutes class actions in state and federal courts throughout the country and around the world. The firm has developed a global reputation for excellence and has recovered billions of dollars for victims of fraud and other corporate misconduct. All of our work is driven by a common goal: to protect investors, consumers, employees and others from fraud, abuse, misconduct and negligence by businesses and fiduciaries. The complaint in this action was not filed by Kessler Topaz Meltzer & Check, LLP. For more information about Kessler Topaz Meltzer & Check, LLP please visit www.ktmc.com.
Kessler Topaz Meltzer & Check, LLP
280 King of Prussia Road
May be considered attorney advertising in certain jurisdictions. Past results do not guarantee future outcomes.

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Frequently Asked Questions

What is the class action lawsuit against Lantheus about?

The lawsuit claims Lantheus made misleading statements regarding PYLARIFY's competitive status.

Who can become a lead plaintiff in the Lantheus lawsuit?

Investors can apply as lead plaintiffs if they have significant financial interest.

What is the deadline for appointing a lead plaintiff?

The deadline to appoint a lead plaintiff is November 10, 2025.

How can Lantheus investors contact Kessler Topaz?

Investors can call attorney Jonathan Naji at (484) 270-1453 or email info@ktmc.com.

What should Lantheus investors do if they suffered losses?

Affected investors should contact Kessler Topaz for more information on the case.

Last updated: Sep 17, 2025