John Zummo

John is a member of the firm’s litigation practice group. John has over 23 years of experience in all aspects of litigation, including over 30 trials, as well as in bankruptcy matters and alternative dispute resolution. Prior to entering private practice, John served as a Judge Advocate in the United States Navy and as a Special Assistant U.S. Attorney. In private practice, John has focused his practice on representing financial institutions and other corporate clients in complex litigation, insolvency matters, and government investigations throughout the United States.

John handles a wide range of litigation matters, including: prosecuting creditor’s rights claims; defending securities fraud and common law fraud claims; prosecuting fraud claims; and litigating claims arising out of mergers and acquisitions, construction and real estate development projects, and general business disputes.

John regularly represents institutional lenders and other creditors in insolvency and default scenarios, including: enforcing credit agreements, equipment finance leases, and guaranties; handling bankruptcy main cases and adversary proceedings; negotiating forbearance agreements and out-of-court workouts; coordinating the acquisition and disposition of distressed assets, including foreclosure actions and UCC sales; defending lender liability claims; defending preference claims; prosecuting and defending fraudulent transfer claims; and handling inter-creditor disputes.

John also has experience defending criminal matters and representing targets and witnesses in formal and informal government investigations.

John has received many accolades and awards, including being recognized as an Illinois Super Lawyer (2012–2021) and as an Illinois Leading Lawyer (2014–2016).

Prior to joining Gutnicki LLP, John was affiliated with Katten Muchin Rosenman LLP, Reed Smith LLP, and Vedder Price, P.C.

John is admitted to practice in Illinois and the federal jurisdictions listed in the Court Admissions section of this page. In addition, he has been admitted pro hac vice and/or acted as lead counsel in matters pending in state and/or federal courts in Alabama, Arizona, California, Colorado, Delaware, Florida, Georgia, Hawaii, Idaho, Indiana, Kansas, Maryland, Michigan, Minnesota, Missouri, Nevada, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oregon, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Utah, Virginia, Washington, and Wisconsin.

Phone: 847-584-2351

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The John Marshall Law School, J.D.; cum laude, Order of the Coif 

Marquette University, B.A.; cum laude


Illinois, 1997
District of Columbia, 1999 (inactive)

Court Admissions

U.S. District Court, N.D. IL, 1997 (trial bar)
U.S. Bankruptcy Court, N.D. IL, 1997
U.S. Court of Appeals, 7th Cir., 2003
U.S. Court of Appeals, 4th Cir., 2007
U.S. District Court, W.D. MI, 2013
U.S. Bankruptcy Court, W.D. MI, 2013
U.S. District Court, E.D. MI, 2013
U.S. District Court, CO, 2015
U.S. District Court, N.D. IN, 2015
U.S. Bankruptcy Court, N.D. IN, 2015