Form 4: Farallon Partners Reduces Lantheus Holdings Stake

Farallon Partners, a 10% owner of Lantheus Holdings, Inc., reported significant sales of common stock totaling over 3.4 million shares in mid-August 2025.

Summary

• Farallon Partners L.L.C./CA, a 10% owner of Lantheus Holdings, Inc. (LNTH), reported the sale of 3,406,000 shares of common stock.
• The sales occurred on August 19, 2025, and August 20, 2025.
• On August 19, 2025, 41,000 shares were sold at a price of $55.34 per share.
• On August 20, 2025, 3,365,000 shares were sold at a weighted average price of $56.15 per share, with individual transaction prices ranging from $56.14 to $56.55.
• Following these transactions, Farallon Partners' indirect beneficial ownership in Lantheus Holdings, Inc. stands at 3,477,227 shares.
• The transactions were made pursuant to a Rule 10b5-1(c) plan, indicating a pre-arranged trading plan.

Sentiment

Score: 4

Explanation: The sentiment is slightly negative for Lantheus Holdings, Inc. as a major institutional investor has significantly reduced its stake. While the sale was pre-planned (10b5-1), large institutional selling can sometimes signal a lack of conviction or portfolio rebalancing, which the market may interpret cautiously.

Positives

• Farallon Partners realized proceeds from the sale of 3,406,000 shares of Lantheus Holdings, Inc. common stock at prices between $55.34 and $56.55 per share.

Negatives

• A significant reduction in the stake held by a major institutional investor, Farallon Partners, could be perceived negatively by the market for Lantheus Holdings, Inc.

Future Outlook

The filing does not contain any forward-looking statements or guidance regarding Lantheus Holdings, Inc.'s future performance or outlook.

Management Comments

• Farallon Partners, L.L.C. and certain affiliated entities disclaim any beneficial ownership of the Issuer's securities reported for purposes of Section 16 of the Securities Exchange Act of 1934, except to the extent of their pecuniary interest, if any.
• Each of the Managing Members of Farallon General Partners also disclaims any beneficial ownership of the Issuer's securities reported, except to the extent of his or her pecuniary interest, if any.
• The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the reported range.

Industry Context

This Form 4 filing reports an insider transaction by a significant institutional investor and does not provide broader industry context or trends.

Stakeholder Impact

• Shareholders of Lantheus Holdings, Inc. may view the significant reduction in ownership by Farallon Partners as a potential negative signal, which could influence investor sentiment and stock price.
• Farallon Partners' investors benefit from the realized gains from these stock sales.

Key Dates

Keywords

Lantheus Holdings, LNTH, Farallon Partners, stock sale, insider transaction, beneficial ownership, Form 4, institutional investor