Replacement Organ Maker Files for IPO

Tengion Inc., an East Norriton, Penn.-based regenerative medicine company focused on replacement organs like bladders, has filed for a $40.25 million IPO. It plans to trade on the Nasdaq under ticker symbol TNGN, with Piper Jaffray serving as lead underwriter.

Tengion has raised over $140 million in VC funding, from Oak Investment Partners (19.6% pre-IPO stake), HealthCap (14.3%) Johnson & Johnson Development Corp. (12.5%), Brookside Capital (8.6%), Bain Capital Ventures (8.5%), Quaker BioVentures (8.3%), L Capital Partners (6.4%), Deerfield Partners and Safeguard Scientifics. www.tengion.com

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