Mark Wiesner is an accomplished finance executive with extensive experience in operational finance, strategic planning, and business transformation. Currently serving as Senior Vice President of Operations & Finance at Colliers, Mark previously held the roles of Chief Commercial Officer and Chief Financial Officer at CBRE Global Workplace Solutions, leading a team of 250 professionals and achieving over $500M in annual cost savings through a global reorganization. With a robust background in public accounting from firms such as Deloitte and CLA, Mark has effectively managed audits and compliance for a variety of sectors. Mark holds a Bachelor of Science in Accounting from the University of Wisconsin-La Crosse.
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