Trans1 Files for IPO

Trans1 Inc., a Wilmington, N.C.-based developer of a surgical device for treating a degenerative disc disease affecting the lower lumbar region of the spine, has filed for an $80.5 million IPO. It plans to trade on the Nasdaq under ticker symbol TSON, with Lehman Brothers and Piper Jaffray serving as co-lead underwriters. Trans1 has raised around $40 million in VC funding since 2000, from firms like Advanced Technology Ventures (19.5% pre-IPO stake), Delphi Ventures (16.3%), Cutlass Capital (15%), Sapient Capital (12%) and Thomas Weisel Healthcare Venture Partners (7.2%). www.trans1inc.com