Mark A. Widmann, CPA

Sitzberger Company Mark Widmann CPA


Mark joined Sitzberger & Company in 2000. He works with clients in a variety of industries providing business advisory and tax services and has a special interest in working with businesses in the construction industry. He has served on the Wisconsin Builders Association audit committee and has been a presenter at various continuing education programs for the Metropolitan Builders Association.

Mark lives in Hartland with his wife Joan.


Professional Designations and Affiliations:

  • Certified Public Accountant, 1981
  • Member, AICPA
  • Member, WICPA


  • University of Wisconsin – Milwaukee:
  • Past Chairperson of the Waukesha Practitioners WICPA Group
  • Past Chairman – Brookfield Chamber of Commerce, Manufacturing & Industrial Council
  • Past Treasurer – Brookfield Chamber of Commerce

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