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With a highly educated workforce, world-class academic and research institutions, and robust start-up ecosystems across the country, Canada is the perfect place to grow your ideas, forge partnerships and take on some of the world's biggest challenges through research

Colliers is a leading diversified professional services and investment management company. With operations in 68 countries, our 19,000 enterprising professionals work collaboratively to provide expert real estate and investment advice to clients.

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Will Kissick

Sales Representative

Waterloo Region

William Kissick serves as a real estate sales representative, in the Kitchener-Waterloo office.

William is a highly motivated professional with a passion for commercial real estate. He graduated from Conestoga College with a diploma in business  and has successfully completed salesperson program, thereby obtaining his real estate license. With an unwavering interest in commercial real estate, William has consistently demonstrated a deep understanding of the industry's dynamics and market trends.

Prior to his current position, William gained valuable experience in the real estate sector while working as an assistant. This role allowed him to develop strong organizational and administrative skills, as well as a keen eye for detail and a proactive approach to problem-solving.

Currently employed at Colliers, William utilizes his comprehensive knowledge of the commercial real estate landscape to assist clients in making informed decisions and achieving their business objectives. He possesses exceptional communication and negotiation skills, enabling him to build and maintain strong relationships with clients, colleagues, and stakeholders.

William's unwavering commitment to providing exceptional service and his ability to adapt to changing market conditions make him a valuable asset in the real estate industry. With his strong academic background, industry experience, and dedication to continuous professional growth, William is poised to excel in his career and make significant contributions to the commercial real estate sector.

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Mark Berestiansky

Senior Vice President | Valuation and Advisory Services

A Certified Professional Accountant (CPA CMA) and an Accredited Appraiser of the Canadian Institute (AACI), Mark is a valuation and advisory services professional with a focus on investment grade assets and income producing properties. 

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Leigh Kirnbauer

Senior Vice President | Partner

Since April 2010 Leigh has been a member of the downtown office leasing division of Colliers International in Calgary. During his tenure at Colliers, Leigh has experienced the volatility of Calgary’s economy and the corresponding commercial real estate market, which provides him with the knowledge and experience to assist his clients with their current and future real estate decisions. Always putting his clients’ needs first, Leigh approaches his business with professionalism, honesty and integrity and has developed a strong reputation with not only his clients and colleagues, but also industry peers.

Over the last nine years, Leigh has had the opportunity to work with a variety of clients on both the landlord and tenant side of transactions, and therefore has a strong understanding of the motivations and perspectives of both sides of lease negotiations. Utilizing strong market knowledge, financial analysis and an understanding of his clients’ needs, Leigh has been able to assist several organizations with office relocations, renewals, expansions, contractions, lease assignments, lease terminations, sublease of excess space and lease audits and/or reviews.

Some of the my past and current clients include:

- Slate Asset Management
- CREIT Management L.P. / Choice Properties
- KingSett Capital
- Whiterock Real Estate Investment Trust
- Serafina Energy
- NCS Multistage
- Murphy Group Canada / Surerus Pipeline
- Torxen Oil & Gas
- Aureus Energy Services
- Bantrel
- Stream Asset Financial Management
- KOGAS Canada Ltd.

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Josh Magnussen

Senior Vice President | Partner

Calgary - Southeast Industrial Office

Josh Magnussen is a Senior Vice President and Partner at Colliers Calgary in their industrial division. With over 10 years of experience in the real estate industry, Josh has developed an exceptional skill set to ensure client needs are met, whether on a sale or lease basis. His steadfast commitment to his craft is demonstrated in his tenacious work ethic, creative thinking, and unparalleled market knowledge.

Josh has facilitated an impressive 3.4 million square feet of transactions and $276 million in transaction value over the past 5 years. His dedication and passion for ensuring clients have the best possible experience is readily apparent in every interaction, regardless of the transaction’s size or nature.

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