Lantheus Holding SEC Filings

Insiders from Farallon-affiliated funds reported large open-market dispositions of Lantheus Holdings (LNTH) stock on August 19-20, 2025. The filing shows a sale of 41,000 shares on 08/19/2025 at $55.34 and a weighted-average sale of 3,365,000 shares on 08/20/2025 at $56.15. The reported beneficial ownership for the group fell from 6,842,227 shares after the first sale to 3,477,227 shares after the second sale. Footnotes identify the sellers as Farallon Funds and multiple managing members who disclaim beneficial ownership except for any pecuniary interest. The Form 4s were signed by an attorney-in-fact on 08/21/2025.

Farallon Partners and affiliated reporting persons disclosed sales of Lantheus Holdings, Inc. (LNTH) shares that substantially reduced their indirect holdings. The Form 4 shows a sale of 41,000 shares on 08/19/2025 at $55.34 and a subsequent sale of 3,365,000 shares on 08/20/2025 at a weighted-average price of $56.15 (execution prices ranged $56.14 to $56.55). The filing reports indirect beneficial ownership falling from 6,842,227 shares to 3,477,227 shares following the transactions. The Form includes detailed footnotes clarifying that the reported shares are held by Farallon-affiliated funds, that general partners and managing members may be deemed beneficial owners only to the extent of pecuniary interest, and that parallel Form 4 filings were made for additional reporting persons.

Kimberly Brown, Chief Accounting Officer of Lantheus Holdings, Inc. (LNTH), reported a sale of 463 shares of common stock at a price of $54.18 on 08/15/2025, leaving her with 7,701 shares beneficially owned on a direct basis. The Form 4 discloses this routine insider disposition executed under a transaction code indicating a sale.

Ludger Dinkelborg, Head of Research and Development at Lantheus Holdings, Inc. (LNTH), reported equity awards dated 08/15/2025. The filing shows acquisition of 14,765 restricted stock units (RSUs) that vest in equal installments over a three-year period and a stock option covering 25,324 shares with an exercise price of $54.18. The option vests in three equal annual installments beginning 08/15/2026 and expires 08/15/2035. Following the reported transactions the reporting person beneficially owned 14,765 shares of common stock and had 25,324 option shares outstanding. The form was signed by an attorney-in-fact on 08/19/2025.

Lantheus Holdings, Inc. (LNTH) reported that certain investment funds affiliated with Farallon (the "Farallon Funds") hold 6,883,227 shares of common stock, held indirectly. The filing notes the company had 67,994,149 shares outstanding as of August 1, 2025, and because the total shares outstanding were reduced, the Farallon Funds now beneficially own more than 10.0% of the common stock without any reported purchase by the reporting persons.

The Form 3 lists multiple Farallon-affiliated reporting persons who may be deemed to have investment discretion or indirect beneficial ownership through Farallon General Partners and Managing Members, while those parties disclaim beneficial ownership except to the extent of any pecuniary interest. The filing is limited to non-derivative holdings and includes an Exhibit 24 power of attorney.

Farallon Partners and affiliated managing members filed a Form 3 disclosing beneficial ownership of 6,883,227 shares of Lantheus Holdings, Inc. (ticker: LNTH). The filing, triggered by an event dated 08/06/2025, states that as of 08/01/2025 there were 67,994,149 shares outstanding and that, solely because the issuer reduced its outstanding share count, the Farallon Funds now hold in excess of 10.0% of common stock. The Form 3 emphasizes that this report does not reflect any acquisition by the reporting persons and that ownership is held indirectly by Farallon-managed funds with various managing members disclaiming direct beneficial ownership except to the extent of any pecuniary interest.

Paul Blanchfield, President and Director of Lantheus Holdings, Inc. (LNTH), reported an insider sale. On 08/13/2025 he disposed of 3,060 shares of common stock at $53.57 per share, leaving him with 108,214 shares beneficially owned. The filing notes the sale was executed under a Rule 10b5-1 trading plan adopted by the reporting person on 02/27/2025. The Form 4 was signed by an attorney-in-fact on 08/15/2025.

Janus Henderson Group plc filed an amended Schedule 13G reporting beneficial ownership in Lantheus Holdings, Inc. The filing lists an aggregate 6,938,984 shares, representing 10.0% of the class, with no sole voting or dispositive power and 6,938,984 shares held with shared voting and dispositive power.

The filing also identifies an indirect subsidiary, JHIUS, as potentially beneficially owning 6,242,218 shares (9.0%). The report includes issuer and filer addresses, a power of attorney executed Dec 9, 2022, and is signed by Kristin Mariani as Head of North America Compliance on 08/14/2025.