Horizon Pharma, Inc. Plans IPO this Week, Expected to Raise a $61 Million Stock Offering

A Northbrook-based biopharmaceutical startup is expected to go public this week with a $61-million stock offering. Horizon Pharma Inc., which is developing new drugs for arthritis and pain, is offering 5.5 million shares that are expected to be priced between $10 to $12 each as soon as Wednesday, according to gaskinco.com, a website by financial analyst Francis Gaskins that tracks IPOs. The stock offering is part of a spurt of local companies planning to go public this year, including Chicago-based banking-security software provider Trustwave Inc., bicycle-components maker Sram International Corp. and Groupon Inc. Nationwide, the IPO market is revved up for its biggest week of deals since 2007.