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Brian Rosen | Colliers | Toronto Downtown

Brian Rosen

President & Chief Executive Officer | Canada

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Professional Summary

Brian Rosen is the President and Chief Executive Officer I Canada at Colliers International, Canada’s leading commercial real estate services and investment management firm. He assumed the role on March 31, 2020 and is responsible for driving growth and establishing the strategic direction of the business in the region.  In addition to his role as President and CEO in Canada, Brian is also a member of the global senior executive team that sets the vision and strategy for Colliers International.

Prior to being appointed President and CEO in March 2020, Brian served as Chief Operating Officer I Canada at Colliers, overseeing operations of the Canadian business, including business development, finance and accounting, marketing and communications, IT and human resources. While in this role, Brian worked closely with the senior leadership team to refine Colliers’ fully integrated service offering and establish strategic areas of focus for the business.

Brian has spent his career fostering innovation and driving change, solving complex problems and continuously challenging and improving operations. An experienced General Manager, Corporate Strategist, Sales Leader, and Marketer, Brian worked at Iron Mountain for over a decade before joining Colliers, serving most recently as Senior Vice President and General Manager, Canada. Brian has had extensive experience in both the US & Canada and prior to Iron Mountain was a Corporate Strategist at Avon Products and Management Consultant at Marakon Associates.

Brian holds an MBA from Harvard Business School and an undergraduate degree in Molecular Biology from Princeton University.


Brian has had extensive experience in both US & Canada and has held roles across different business areas including General Management/P&L Ownership, People Leadership, Management Consulting, and Corporate Strategy. With deep expertise in storage, logistics and warehousing, and technology solution selling, including cloud and AI/Machine Learning, Brian understands the unique needs of the real estate services industry.  


Princeton University: Bachelor of Arts, Molecular Biology

Harvard Business School: MBA, General Management

Memberships & Involvements


Ontario Advisory Board - Canadian Cancer Society

CEO Global Network

Featured News

Aug 12, 2021

Thinking Outside the Box: The Secret to Allied’s Success

In this podcast, Colliers’ Brian Rosen and Colin Worrell speak with Allied’s Michael Emory and Tom Burns on Allied’s journey and approach to success; the Allied team’s creative, out-of-the-box thinking that time and again gives rise to iconic, community-focused buildings; how Allied has positioned itself to come out of the pandemic strong; the role of ESG in the company’s future; and more.
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Sep 28, 2020

Colliers Welcomes Victoria Marshall, Senior Director, Finance & Operations | Canada

Colliers International announced today that Victoria Marshall has joined the firm as Senior Director, Finance & Operations | Canada
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