Our Leaders > John Iwanski

John Iwanski

Senior Managing Director

As a senior managing director, John Iwanski is responsible for national leadership, strategy, and development of Riveron’s Transaction Services practice.

Riveron teams are comprised of seasoned professionals with dynamic backgrounds and perspectives. Most of our people have been in our clients' chairs before, trying to solve the same problems, which brings a level of understanding that is hard to replicate.
Proud Dad. Badger Fan. Strategic Partner.


John Iwanski brings more than 25 years of diverse experience in auditing, consulting, advisory, and executive positions, specializing in transaction advisory services. He has served companies in a variety of industries, including financial services, healthcare, construction, real estate, retail, insurance, and manufacturing and distribution.

John’s experience in performing buy-side and sell-side due diligence, capital analysis, carve-outs, industry roll-ups, financial modeling, transaction services agreements, and general transaction advisory services has been instrumental in his ability to provide highly informed market strategies and effective leadership at Riveron. He improves client satisfaction by focusing on relationship maintenance, and on recruiting and retaining qualified, personable employees.

A native of Wisconsin, John has been in the Chicago market for the entirety of his professional career. Prior to joining Riveron, he served as partner in Grant Thornton’s Transaction Advisory Services group. John also served as chief financial officer to a privately funded private equity group, where he was involved in financial strategy, relationship maintenance, transaction structure, and due diligence.

Education and Certifications

  • Bachelor in Accounting, University of Wisconsin, Madison
  • Certified Public Accountant licensed by the State of Illinois


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