Lantheus Holdings Inc

Rule 10b5-1 Trading Plans

On February 26, 2024, Julie McHugh, amember 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”), providing for the potential sale of up to 2,500 shares of our common stock on May 28, 2024.

On February 27, 2024, Heinz Mäusli, amember of our Board, entered into a 10b5-1 Plan providing for the potential sale of up to 25,692 shares of our common stock, including shares obtained from the exercise of vested stock options covered by the 10b5-1 Plan, between May 28, 2024 and September 30, 2024.

On March 1, 2024, Paul Blanchfield, our President, entered into a 10b5-1 Plan providing for the potential sale of up to 7,263 shares of our common stock, between May 31, 2024 and March 5, 2025. Pursuant to the 10b5-1 Plan, Mr. Blanchfield will also make a gift of 355 shares of common stock on November 14, 2024.

On March 1, 2024, Daniel Niedzwiecki, our Chief Administrative Officer, General Counsel and Corporate Secretary, entered into a 10b5-1 Plan providing for the potential sale of up to 15,373 shares of our common stock, between May 30, 2024 and August 30, 2024.

On March 13, 2024, Mary Anne Heino, amember of our Board, entered into a 10b5-1 Plan. The plan provides for the sale of shares of our common stock between August 2, 2024 and March 31, 2025 in an amount (i) sufficient to cover tax withholding obligations in connection with the potential vesting and settlement of up to 117,006 outstanding RSUs and PSUs plus (ii) an additional number of shares necessary to result in approximate net sale proceeds of $2,000,000 in the aggregate.