PJC Piper Jaffray Companies

Renewable Energy Group Inc., an Ames, Iowa, company that bills itself as the largest producer of biodiesel in the U.S. based on gallons of output, late Tuesday said it plans to offer 7.2 million shares of common stock at an estimated price range of $13 to $15 a share in its upcoming initial public offering.

Based on the midpoint of the range, Renewable Energy Group's IPO will raise about $101 million with underwriters UBS Investment Bank and Piper Jaffray (PJC).

Shareholders in the company include Bunge (BG) and NGP Energy Technology Partners. Renewable Energy Group plans to trade on the Nasdaq under the symbol REGI.

-By Steve Gelsi; 415-439-6400; AskNewswires@dowjones.com