Two companies - Gaithersburg, Md.-based Emergent BioSolutions Inc., and Lexington, Mass.-based ActivBiotics Inc. - filed for their IPOs this week, hoping to raise as much as $86.25 million and $46 million, respectively. Both companies were in SEC-imposed quiet periods Tuesday. If their IPOs are completed, their stocks would be listed on the Nasdaq National Market under "EBSI" for Emergent and "ACTV" for ActivBiotics. (BioWorld Today) Read More