Imperium Files for $345 Million IPO

Imperium Renewables Inc., a Seattle-based biodeisel producer, has filed for a $345 million IPO. It plans to trade on the Nasdaq under ticker symbol IMPR, with Morgan Stanley and Lehman Brothers serving as co-lead underwriters. Imperium is run by former venture capitalist Martin Tobias, and has raised funding from such firms as Nth Power, Technology Partners, Vulcan Capital, BlackRock Investment Management, Capricorn Management and Silver Point Capital.