Tax Ethics Rules for Corporate Finance Professionals

Mark A. Sellner, CPA, JD, LLM

Mark Sellner teaches and consults on business and executive tax matters, including the tax consequences of buying and selling a business.

He has both Big Four and Fortune 500 corporate tax experience. Mark completed a three-year Ernst & Young National Tax Department assignment in Washington, DC, and was tax counsel and Director of U.S. Taxes at Ecolab in St. Paul, Minnesota. He has served as a partner at KPMG’s metro New York headquarters, and was a tax partner at CliftonLarsonAllen in Minneapolis, where he chaired the Baker Tilly International federal tax committee.

Mark has served as an adjunct professor of business taxation at the University of St. Thomas Law School, and has served as Director of Graduate Studies in Taxation at the University of Minnesota’s Carlson School of Management. He has developed and taught graduate-level courses on corporate tax, mergers and acquisitions, accounting for income taxes, and consolidated returns in the Master of Business Taxation Program.

He teaches for the AICPA and leading CPA firms nationwide and is a recipient of the R. Glen Berryman award for excellence in teaching from the Minnesota Society of CPAs.

Mark completed a four-year term on the Minnesota Board of Accountancy.

Mark received his accounting degree with high honors at the University of Illinois (1978), his law degree at the University of Minnesota (1981), and a master of laws in taxation degree at Georgetown University Law Center 1988). 

2/2018