33 North Dearborn Street · Suite 600
· Chicago, Illinois 60602 ·

Phone (312) 263-0345 · Fax (312) 263-4670

Ann C. Tighe

Phone: 
(312) 263-0345
Fax: 
(312) 263-4670

Ann Tighe has over thirty years of experience in trials and appeals.  She specializes in federal criminal defense and complex civil litigation. Formerly as an Assistant United States Attorney and as a defense lawyer, her criminal litigation experience includes cases involving health care fraud, public corruption, mail and wire frauds, commercial and financial frauds, internal corporate investigations, government contracts, environmental crimes, antitrust and securities. She has represented clients in federal and state courts, and in grand jury investigations, throughout the United States.


Ms. Tighe has been involved in more than 100 appellate cases before the United States Court of Appeals for the Seventh Circuit, including personally arguing more than 20 appeals. In addition, she has substantial expertise in corporate governance matters, having worked on many cases involving the preparation of corporate ethics and compliance programs, especially for small to mid-sized companies seeking to correct or prevent corporate fraud.



Ms. Tighe is a Fellow in the American College of Trial Lawyers and has been recognized as an Illinois Super Lawyer every year for the past decade.  Prior to joining the Cotsirilos firm, Ann was an Assistant United States Attorney for the Northern District of Illinois. During her tenure at the U.S. Attorney’s Office, Ms. Tighe was of Chief of the Government Fraud Division, Deputy United States Attorney, and Chief of the Criminal Receiving and Appellate Division.