Davis Polk & Wardwell LLP advised Credit Suisse Securities (USA) LLC, BofA Merrill Lynch and J.P. Morgan Securities Inc. as joint book-running managers in connection with the $150 million initial public offering of 10,000,000 shares of common stock of QuinStreet, Inc. The shares are listed on the Nasdaq Global Select Market under the symbol “QNST.” Qatalyst Partners LP acted as financial adviser to QuinStreet in connection with the offering.

QuinStreet is a leader in vertical marketing and media on the Internet. The company provides a strong set of capabilities to engage Internet visitors with targeted media and connects its marketing clients with their potential customers online.

The Davis Polk corporate team included partner Alan F. Denenberg and associates Colin R. Sturt, Carmen E. Atkins and Daniel J. Luskin. Partner Rachel D. Kleinberg and associate M. Ryan LaRosa provided tax advice. Counsel Marcie A. Goldstein of the New York office provided FINRA advice. Associates Vishnu Reddy and Pritesh P. Shah of the New York office provided intellectual property advice. Karla K. Rogers, Kimberley Kakade and Sorina Delia Lazar of the New York office were the legal assistants on the transaction. Except as noted above, all members of the Davis Polk team are based in the Menlo Park office.