Adam Hennen

Adam Hennen

Adam Hennen

Certified Public Accountant (CPA)
Phone: 651-621-8523
Location: Roseville

Adam is a Principal in the Audit and Accounting Department of the Roseville Office of Olsen Thielen and specializes in the manufacturing, not‑for‑profit, wholesale/distribution, and telecommunications industries.


  • Conducts and supervises audit, review, and compilation engagements of companies in various industries
  • Prepares quarterly corporate tax estimates and tax provisions for complex consolidated groups of companies
  • Provides cash flow and financial ratio trend analysis for industry benchmarking
  • Provides consulting services and training to client’s management and accounting staff
  • Prepares projections and forecasts for established companies
  • Prepares and reviews multi-company consolidated financial statements
  • Performs fraud risk assessments and internal control evaluations


Bachelor of Science in Accounting, Gustavus Adolphus College, St. Peter


  • American Institute of Certified Public Accountants (AICPA) member
  • Minnesota Society of Certified Public Accountants (MNCPA) member
  • Manufacturing CPAs member
  • Association of Certified Fraud Examiners (ACFE) and the Twin Cities Chapter of the ACFE (TCCCFE) member
  • White Bear Area Chamber of Commerce Past Chair
  • Stillwater Area Lacrosse Association Treasurer

Core Specializations

  • Wholesale/Distribution
  • Manufacturing
  • Not-for-Profit Organizations
  • SEC Companies
  • Insurance Companies
  • Telecommunications Companies
  • Fraud Investigation
  • Forensic Accounting
  • Litigation Support

Adam is also a co-host of Olsen Thielen’s bi-weekly Q&A Over Coffee Podcast. Check out our entire library of episodes here.

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