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Lantheus Holdings, Inc.

For the period ended Mar 31, 2026. Filed May 7, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 7, 2026

LNTH$101.01+0.4%Stored close · as of Nov 9, 2026

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Item 5. Other Information

Rule 10b5-1 Trading Plans

On March 2, 2026, Julie McHugh, a member of our Board, entered into a trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act (a “10b5-1 Plan”). The 10b5-1 Plan provides for the potential sale of up to 2,033 shares of our common stock on June 1, 2026.

On March 9 , 2026, Mary Anne Heino, our Executive Chairperson and Chief Executive Officer, entered into a 10b5-1 Plan providing for the potential sale of shares of our common stock in an amount necessary to attain approximately $2,000,000 of net sale proceeds between each of June 8, 2026, and June 15, 2026; August 11, 2026, and September 15, 2026; November 10, 2026, and December 15, 2026; and March 2, 2027, and March 15, 2027 for a total of up to $8,000,000.

On March 11, 2026, Samuel R. Leno, a member of our Board, entered into a 10b5-1 Plan providing for the potential sale of 7,154 shares of our common stock on June 11, 2026, and for the potential sale of 7,153 shares of our common stock on June 12, 2026.

On March 12, 2026, Daniel Niedzwiecki, our Chief Administrative Officer, General Counsel and Corporate Secretary, entered into a 10b5-1 Plan providing for the potential sale of 7,029 shares of our common stock on June 15, 2026, and the potential sale of 4,798 shares of our common stock on September 15, 2026.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.