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Christina L. Costley

Los Angeles – Century City Office

Christina L. Costley focuses her practice on complex business litigation. She represents public corporations and their officers and directors in securities class actions, shareholder derivative lawsuits, Securities and Exchange Commission 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 represented software companies in all forms of litigation, including trade secret, breach of contract, and consumer class action claims.

Christina has substantial courtroom experience. She has first-chaired 15 jury trials and has argued dispositive motions across a range of issues. Christina frequently speaks and writes on topics including mergers and acquisitions litigation, corporate governance issues, and executive compensation.

In 2014, the Daily Journal included Christina on its "Top 20 Under 40" list. The annual list honors the best and brightest in California's legal industry based on book of business, practice area, key victories and other noteworthy successes. The award recognized Christina's accomplishments in litigation arising out of executive compensation.

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.

Shown below is a selection of Christina’s engagements.


Daily Journal

Daily Journal, Top 20 Under 40, 2014
Super Lawyers Rising Stars, 2015–2018
Christina L. Costley


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

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
Super Lawyers Rising Stars
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