Lantheus Holdings, Inc. ("Lantheus" or the "Company") (NASDAQ:LNTH), today announced that certain of its existing stockholders (the "Selling Stockholders") intend to increase the amount of shares offered for sale by 500,000 shares of common stock to 2,500,000 shares of common stock. The Company, as previously announced, will offer 1,000,000 shares of common stock for sale. The shares offered for sale by the Company and the Selling Stockholders will be offered pursuant to an effective shelf registration statement filed with the Securities and Exchange Commission (the "SEC") on Form S-3 and a related registration statement on Form S-3MEF filed with the SEC pursuant to Rule 462(b) under the Securities Act of 1933. The Company will not receive any proceeds from the sale of shares by the Selling Stockholders. Credit Suisse will act as underwriter for the offering. A shelf registration statement (including a prospectus) relating to the offering of common stock was filed with the SEC on August 5, 2016 (and became effective on August 31, 2016) and a related registration statement was filed with the SEC on November 15, 2016 pursuant to Rule 462(b) under the Securities Act of 1933 (and became automatically effective upon filing). Before you invest, you should read the prospectus included in the registration statements and the documents incorporated by reference therein as well as the prospectus supplement related to this offering. You may obtain these documents for free by visiting EDGAR on the SEC website at www.sec.gov. When available, copies of the prospectus supplement and accompanying prospectus related to the offering may also be obtained by contacting Credit Suisse Securities (USA) LLC., Attn: Prospectus Department, One Madison Avenue, New York, NY 10010, or by calling (800) 221-1037, or by emailing firstname.lastname@example.org. The offering of these securities will be made only by means of a prospectus supplement and the accompanying prospectus.