The law firm of Kirby McInerney LLP reminds investors its investigation on behalf of Lantheus Holdings, Inc. (“Lantheus” or the “Company”) (NASDAQ: LNTH) investors concerning the Company’s possible violation of the federal securities laws or other unlawful business practices.

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What Happened?

On August 6, 2025, Lantheus announced disappointing second quarter 2025 results, revealing earnings-per-share (“EPS”) and revenue figures that missed expectations. In addition, the Company lowered its full year 2025 revenue guidance from $1.550 billion - $1.585 billion to $1.475 billion - $1.51 billion and its full year 2025 adjusted fully diluted EPS guidance from $6.60 - $6.70 per share to $5.50 - $5.70 per share. During an earnings call held that same day, Lantheus’s Chief Executive Officer cited intensified pricing pressure in the PSMA PET market and a conscious decision to walk away from volume at certain accounts to protect long-term franchise value. In addition, the Company’s Chief Financial Officer stated that “[c]onsolidated net revenue for the second quarter was $378 million, a decrease of 4.1%.”

On this news, the price of Lantheus shares declined by $20.76 per share, or approximately 51.87%, from $72.63 per share on August 5, 2025 to close at $51.87 on August 6, 2025.

What to Do Next?

If you acquired Lantheus securities, have information, or would like to learn more about this investigation, contact Thomas W. Elrod of Kirby McInerney LLP by email at investigations@kmllp.com, or fill out the contact form below to discuss your rights or interests with respect to these matters without any cost to you.

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Kirby McInerney LLP is a New York-based plaintiffs’ law firm concentrating in securities, antitrust, whistleblower, and consumer litigation. The firm’s efforts on behalf of shareholders in securities litigation have resulted in recoveries totaling billions of dollars.

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