Sonus Pharmaceuticals, Inc. Receives Staff Determination Letter From Nasdaq

BOTHELL, Wash., May 9, 2008 (PRIME NEWSWIRE) -- Sonus Pharmaceuticals, Inc. (Nasdaq:SNUS) today announced that it has received a determination letter from The Nasdaq Stock Market ("Nasdaq") dated May 6, 2008, indicating that the Company has failed to regain compliance with the $1.00 minimum bid price requirement for continued listing under Marketplace Rule 4450(a)(5). The Company was first notified by Nasdaq that it failed to comply with the minimum bid price requirement on November 5, 2007. In accordance with Marketplace Rule 4450(e)(2), the Company was provided 180 calendar days, or until May 5, 2008, to regain compliance.