SCHEDULE: FMR LLC & Abigail Johnson Disclose 6.5% Lantheus Stake

FMR LLC and Abigail P. Johnson reported a 6.5% beneficial ownership stake in Lantheus Holdings Inc. common stock as of September 30, 2025.

Summary

• FMR LLC and Abigail P. Johnson jointly reported beneficial ownership of 4,399,523.57 shares of Lantheus Holdings Inc. common stock.
• This ownership represents 6.5% of the total outstanding common stock of Lantheus Holdings Inc.
• The filing is an Amendment No. 1 to a Schedule 13G, indicating an update to a previous beneficial ownership report.
• FMR LLC holds sole voting power over 4,396,739.70 shares and sole dispositive power over 4,399,523.57 shares.
• Abigail P. Johnson, as a control person of FMR LLC, is also deemed to beneficially own the same aggregate amount of shares, with sole dispositive power over 4,399,523.57 shares but no sole voting power.
• The reporting persons certified that the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Lantheus Holdings Inc.

Sentiment

Score: 5

Explanation: The filing is a routine beneficial ownership report (Schedule 13G) and does not contain information that would inherently suggest positive or negative sentiment regarding the issuer's performance or prospects. It merely discloses an institutional investor's stake.

Risks

• The reporting persons certified that the securities were acquired and are held in the ordinary course of business and not for the purpose or with the effect of changing or influencing the control of the issuer. Any future actions inconsistent with this certification could lead to regulatory scrutiny or a requirement to file a Schedule 13D, which entails more detailed disclosure.

Future Outlook

NA

Industry Context

This filing indicates that FMR LLC, a major institutional investment firm, maintains a significant stake in Lantheus Holdings Inc., a company operating in the healthcare sector. Such routine beneficial ownership disclosures reflect portfolio positions of large asset managers and can be interpreted as a continued investment interest in the company or sector.

Stakeholder Impact

• Shareholders: Provides transparency regarding a significant institutional investor's stake, which can be a factor in market perception and liquidity.

Key Dates

Keywords

Lantheus Holdings Inc, FMR LLC, Abigail P. Johnson, Beneficial Ownership, Common Stock, Schedule 13G, Institutional Investor, Healthcare Sector