Jennifer A. Lesny Fleming
Of Counsel
Recognized by The Best Lawyers in America® and Super Lawyers® Magazine as an “Ohio Super Lawyer” and having received the highest peer review rating an attorney can obtain of AV® Preeminent by Martindale-Hubbell, Jennifer Lesny Fleming is a highly respected attorney with a proven record of excellence. With over 30 years of experience, Jennifer has successfully represented clients ranging from individuals to Fortune 500 companies in complex and high-stakes business disputes involving securities-related issues, corporate governance and fiduciary disputes, business torts, employment issues, and complex contract disputes.
Jennifer frequently advises individuals and financial services firms in connection with trade secret claims and restrictive covenants, including non-solicits, non-competes and confidentiality provisions. She has extensive experience litigating disputes concerning advisors, registered representatives and employees transitioning between firms, including the handling of motions for injunctive relief and requests for expungement of Form U5 information.
Jennifer’s extensive experience as lead trial counsel includes matters in both state and federal courts throughout the United States as well as in various arbitration forums, including before the Financial Industry Regulatory Authority (FINRA), the American Arbitration Association (AAA) and JAMS. She has consistently served as a court-appointed mediator and evaluator for the Federal Court Panel of Alternative Dispute Resolution for the U.S. District Court for the Northern District of Ohio since 2011 and has recently been accepted into the FINRA arbitrator roster.
Prior to joining Matasar Jacobs, Jennifer co-founded a business litigation boutique and grew the firm to 11 lawyers with offices in Cleveland and New York City. Before co-founding her firm, she was a litigation partner for many years with the national law firm of Thompson Hine LLP.
Outside of work, Jennifer is very active in civic affairs, being an active member of her city’s Planning and Charter Review Commissions and having served as an officer or trustee of numerous community organizations including Board Chair for The Children’s Museum of Cleveland. She was also an Adjunct Professor for Case Western Reserve University School of Law where she taught focused problem solving and negotiation skills for many years.


