Optimer Files for IPO

Optimer Pharmaceuticals Inc., a San Diego-based developer of anti-infective products, has filed for an $86.25 million IPO. It plans to trade on the Nasdaq under ticker symbol OPTR, with Piper Jaffray and Jefferies & Co. serving as co-lead underwriters. It has raised over $67 million in VC funding from firms like ProQuest Investments, Formose Healthcare Investments and BB Biotech. www.optimerpharma.com