Keithley Instruments (NYSE: KEI) 72.8% HIGHER; Danaher (NYSE: DHR) to acquire Keithley for $21.60/share. Click here to see the full report.

LRAD Corporation (NASDAQ: LRAD) 42.6% HIGHER; announced today it has received a LRAD systems and maintenance order from a foreign government for one of its military services totaling approximately $17.6 million.

FalconStor Software (Nasdaq: FALC) 26.5% LOWER; the resignation of President, Chairman and CEO ReiJane Huai followed a disclosure that certain improper payments were allegedly made in connection with the Company’s contract with one customer.

Apricus Biosciences (Nasdaq: APRI) 20.1% LOWER; announced that they have priced