BRANFORD, Conn.--(BUSINESS WIRE)--Neurogen Corporation (NASDAQ: NRGN) announced today that it received a NASDAQ staff determination letter on December 11, 2009, notifying the company that it has not regained compliance, during a prescribed period, with NASDAQ Listing Rule 5450(a)(1), which requires the stock of listed companies to trade at or above $1.00 per share.
