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IPOs / Week of May 7

Audience Inc.

Mountain View, Calif., 5.3 million shares, priced $14 to $16, managed by J.P. Morgan, Credit Suisse, and Deutsche Bank. Proposed Nasdaq symbol ADNC. Business: Fabless designer of audio chips for the iPhone and other mobile devices.

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New Source Energy Corp.

Oklahoma City, Okla., 9.1 million shares, priced $10 to $12, managed by BMO Capital Markets and KeyBanc Capital Markets. Proposed NYSE symbol NSE. Business: Owns interests in oil and natural gas properties in Eastern Oklahoma.

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Rib-X Pharmaceuticals Inc.

New Haven, Conn., 5.8 million shares, priced $12 to $14, managed by Deutsche Bank. Proposed Nasdaq symbol RIBX. Business: Biopharmaceutical company focused on developing new antibiotics.