• John F. Wonak, CPA, MBA - Managing Partner       

Prior to founding Sea Level Advisory Group, John cofounded the national telecommunications firm, OPEX Communications and served as its Chief Financial Officer, eventually guiding its sale in 2007.  John spent the first 20 years of his career in public accounting, including several years with the national firm, BDO Seidman, and ten years with his own CPA firm which he sold in 1997.  In addition to being a Certified Public Accountant, John earned both a B.S. in Accounting and a Masters in Business Administration (MBA) from Northern Illinois University.  John serves as a mentor at DePaul University’s Coleman Center for Entrepreneurship, having also instructed a course on finance to business owners, and is also an adjunct professor of Finance in the Executive MBA Program at Northern Illinois University.