Maria P. Siourounis

Maria P. SiourounisAudit Senior

P 312.670.7444 | F 312.670.8301


Maria Siourounis is a member of ORBA’s Audit Group. She began her career at ORBA as a tax season intern, where she analyzed financial data for personal and business income tax preparation. She is well versed in various aspects of financial reporting and accounting and has experience in conducting tax research and performing various audit procedures. She works with clients from a variety of industries, including real estate and health care as well as high-net-worth individuals. Maria is currently pursuing a Master’s in Taxation at DePaul University.

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Firm News


ORBA’s Stephanie Zaleski-Braatz Appointed to Illinois CPA Society’s Board of Directors
CHICAGO — ORBA, one of Chicago ’s largest independent accounting, tax and consulting firms, is pleased to announce that Stephanie Zaleski-Braatz, CPA has been named to the Illinois CPA Society's (ICPAS) Board of Directors. She will serve in this role for a three-year term through March 2027.

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seminars & events


ORBA will gladly provide you with hard copies of the useful guides listed below. Select which guides you would like to receive and submit the form below.

  • Tax Pocket Guide
  • Tax Planning Guide
  • Records Retention Schedule
  • Auto, Travel & Business Log

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Forward Thinking
Forward Thinking