Brett Olsen

Brett Olsen

Brett Olsen

Certified Public Accountant (CPA)
Phone: 651-621-8338
Location: Roseville

Brett is a Principal in the Audit and Accounting Department of the Roseville office of Olsen Thielen and specializes in SEC reporting, and in the manufacturing, not-for-profit and financial service industries.


  • Supervises audits, reviews, and compilations in various industries to ensure compliance for internal and external users
  • Consults with companies regarding internal accounting controls
  • Reviews and advises on SEC reporting requirements
  • Provides cash flow and financial ratio trend analysis for industry benchmarking
  • Consults with management regarding tax planning and cash flow
  • Performs due diligence projects and consults regarding acquisitions, mergers, and sales of business assets
  • Prepares projections and forecasts for established and start-up companies


Bachelor of Arts in Accounting, St. John’s University, Collegeville


  • American Institute of Certified Public Accountants (AICPA) member
  • Minnesota Society of Certified Public Accountants (MNCPA) member
  • Manufacturers Alliance (MA) member
  • Kinship, Inc., a youth mentoring organization, Treasurer

Core Specializations

  • SEC Reporting Companies
  • Closely-Held Businesses
  • Manufacturing and Wholesale/Distribution Businesses
  • Financial Services
  • Peer Reviews
  • Employee Benefit Plans
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