Upcoming IPOs

Next week's IPO calendar includes expected pricings from ComScore Inc., Quark Pharmaceuticals Inc., Pros Holdings Inc., Shoretel Inc. and Polypore International Inc.

• Comscore Inc., a Reston, Va.-based provider of online consumer behavior analysis, has set its proposed IPO terms to five million common shares at between $14 and $16 per share. If it prices at the top of its range, it would be valued at approximately $438 million. Comscore plans to trade on the Nasdaq under ticker symbol SCOR, with Credit Suisse and Deutsche Bank Securities serving as co-lead underwriters. It has raised over $92 million in total VC funding since its 1999 inception, from firms like Accel Partners (26.1% pre-IPO stake), JPMorgan Partners (11.1%), Institutional Venture Partners (9.7%), Lehman Brothers (7.7%), Adams Street Partners (7.5%), Topspin Partners (5.2%), Flatiron Partners, vSpring Capital, Devine InterVentures and Rembrandt Venture Partners. www.comscore.com
• PROS Holdings Inc., a Houston, Texas-based provider of pricing and revenue optimization software, has set its proposed IPO terms to6.825 million common shares being offered at between $10 and 412 per share. If it prices at the high end, it would be valued at approximately $309.5 million. PROS plans to trade on the Nasdaq under ticker symbol PROZ, with JPMorgan and Deutsche Bank Securities serving as co-lead underwriters. Shareholders include TA Associates (35.6% pre-IPO stake) and JMI Equity (11.2%). www.prosrm.com
• ShoreTel Inc., a Sunnyvale, Calif.-based provider of IP telecom systems for enterprises, has set its proposed IPO terms to 7.9 million common shares being offered at between $8.5 and $10.5 per share. At the top of its range, ShoreTel would be valued at around $433 million. It plans to trade on the Nasdaq under ticker symbol SHOR, with Lehman Brothers and JPMorgan serving as co-lead underwriters. ShoreTel has raised around $107 million in VC funding between 1997 and 2004, from firms like Crosspoint Venture Partners (27.9% pre-IPO stake), Foundation Capital (20.4%), Lehman Brothers Venture Partners (22.7%), JPMorgan Capital (5.3%), Focus Ventures, Globespan Capital Partners, Matrix Partners and Norwest Venture Partners. www.shoretel.com
• Polypore International Inc., a Charlotte, N.C.-based supplier of filtration products, has filed for a $362.25 million IPO. It plans to trade on the NYSE under ticker symbol PPO, with JPMorgan serving as lead underwriter. Warburg Pincus acquired the company in 2004 from GTCR Golder-Rauner and The InterTech Group. www.polypore.net