Christina L. Costley

Century City Office
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Christina L. Costley's practice focuses on business litigation. She represents public corporations and their officers and directors in securities class actions, shareholder derivative lawsuits, Securities and Exchange Commission (SEC) enforcement proceedings and internal investigations. Christina has handled several high-profile securities class actions, including cases involving Blue Coat Systems, International Rectifier, Mercury Interactive, Ormat Technologies, Portal Software, Sigma Designs and Veritas Software. She has also handled cases involving mergers and other similar fundamental corporate transactions, including cases for DemandTec, Tekelec and First PacTrust Bancorp. In addition, Christina has experience defending corporations in consumer class actions, breach of contract cases and environmental litigation.

Christina has significant courtroom experience; she has first-chaired 15 jury trials and has successfully argued motions to dismiss and other dispositive motions. She has also authored several articles on pleading standards in class action cases, developments in Delaware law and loss causation standards.

Prior to joining Katten, Christina was an associate at Wilson Sonsini Goodrich & Rosati and Sheppard Mullin Richter & Hampton LLP. While in law school, she was a member of the California Law Review and Honors Moot Court Board and received the Prosser Award in Federal Criminal Law. 

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Daily Journal

Daily Journal, Top 20 Under 40, 2014


  • JD, University of California, Berkeley, School of Law
  • BA, University of California, Santa Barbara, magna cum laude

Bar Admissions

  • California

Court Admissions

  • US District Court, Central District of California
  • US District Court, Northern District of California
  • US Court of Appeals, Ninth Circuit


Daily Journal

Top 20 Under 40, 2014
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