Cornerstone Banks
Mark Keller, CPA, has extensive experience in financial management and analysis, currently serving as a Credit Analyst at Cornerstone Banks since June 2020. Prior to this role, Mark held various positions including Controller at Capital Credit Union and Michael Baumgartner Construction, Inc., Business Manager at CAPITAL RV CENTER, INC., and CFO at Clean Energy Joint Venture. Mark began their career as a Sr. Financial Auditor at Basin Electric Power Cooperative and has also worked as a Controller at Bilfinger Westcon, Inc. Mark holds a Master’s degree in Management from the University of Mary and a Bachelor of Science in Accounting from the University of North Dakota.