Return to search

Lisa A. Mantella is Counsel in Leech Tishman’s Litigation Practice Group. Lisa is based in Leech Tishman’s Pittsburgh office where she focuses her practice on internal investigations and white collar criminal defense matters.

Lisa has extensive experience with complex criminal litigation matters. Before joining Leech Tishman, Lisa served as an assistant district attorney in Allegheny County for over 10 years. During that time, she prosecuted white collar criminal cases involving employee theft, fraud, corruption, bribery, money laundering, misapplication of property, obstruction of justice and embezzlement. She has tried numerous jury and non-jury trials to verdict including several cases against elected and public officials. Lisa served as a legal advisor to the Allegheny County Investigating Grand Jury in multiple investigations involving individuals and organizations including a hospital and public schools. She was also designated by the District Attorney to handle state level wiretap matters and assisted law enforcement in obtaining evidence through the use of consensual and nonconsensual wiretaps.

In addition to Lisa’s experience as a prosecutor, she has also handled insurance-related litigation and subrogation matters, having represented both an insurance company and its insureds in the defense of bodily injury and premises liability suits. Lisa is also well-versed in executive compensation matters having worked at The Ayco Company where she assisted in the advisement of Fortune 1000 executives in personal financial planning.


J.D., Duquesne University School of Law
B.S.B.A. in Finance, cum laude, Duquesne University
B.A. in Political Science, cum laude, Duquesne University

Court Admissions



Allstate Fire and Casualty Insurance Co.
Allegheny County District Attorney’s Office
The Ayco Company, L.P.

Professional Memberships

Allegheny County Bar Association (Member, Criminal Litigation Section; Member, Women in the Law Division)
Pennsylvania Association of Criminal Defense Lawyers

Community Involvement

Duquesne University School of Law (Adjunct Instructor, 2012-2015)