NEW YORK - Katten Muchin Rosenman LLP is pleased to announce the addition of William M. Regan as a New York-based partner in its Litigation and Dispute Resolution Practice. Mr. Regan previously practiced in the Litigation Department of Simpson Thacher & Bartlett LLP’s New York office.

Mr. Regan focuses his practice on securities litigation and related matters. He represents clients in shareholder class actions, derivative suits, corporate takeover litigations, regulatory and internal investigations, and other complex commercial disputes. Mr. Regan also has substantial experience litigating U.S. and international corporate takeover contests, with a particular focus on preliminary injunction actions concerning the propriety of deal protection and anti-takeover measures under Delaware law.

Mr. Regan earned his B.A., magna cum laude, from Hofstra University, and his J.D., with high honors, from The George Washington University School of Law, where he was a member of The George Washington University Law Review.

Katten’s Litigation and Dispute Resolution Practice has nearly 200 attorneys across the country dedicated to evaluating, fighting and resolving its clients’ most difficult problems. The firm’s dedication and drive to fully understand its clients’ business and litigation objectives sets its litigators apart from the competition. This understanding makes Katten’s litigators better business partners in the long run, and better advocates for matters on the immediate horizon.

Members of Katten’s Litigation Practice regularly appear in federal and state courts across the nation, at the trial and appellate levels, before arbitration tribunals and administrative law judges, and in specialty courts. The practice is composed of attorneys whose backgrounds are as varied as their clients—and the many jurisdictions where they find themselves. Katten’s litigators are as comfortable in local courthouses in small towns as they are in large federal courthouses in major metropolitan areas, and have the depth and experience to handle, and if necessary, to try, virtually any type of case, including “bet the company” cases.