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Partners and associates

Sean Grennan Rockford

4949 Harrison Ave., Suite 300
Rockford, IL 61108



Email: sean.grennan@wipfli.com

Sean Grennan, MS

Manager, CIO Advisory

Sean Grennan is a manager in Wipfli’s CIO Advisory practice. He has more than 20 years of IT experience, demonstrating leadership through team building, restructuring, and continually making the leap to new and emerging technology. He prides himself on increasing IT effectiveness when it benefits revenue and decreasing overall spending through removing obstacles caused by outdated infrastructure. By using the primary tools of empathy, clarity and planning, he uncovers organizational pain points at their root and delivers strategies to move forward.


  • IT Project Management
  • Business Process Management

Areas of Focus

  • CIO advisory services
  • Technology management


Healthcare Nonprofits


University of Illinois
  • Bachelor of science degree in computer science
  • Master of science degree in management information systems