NebraskaCRE Pro with Omaha office of Colliers earns key designation December 3, 2018 Share on Facebook Share on Twitter Share on LinkedIn Share via email Michael Miller, principal with the Omaha office of Colliers International, has earned the SIOR designation from the Society of Industrial and Office Realtors. To achieve this designation, Miller completed education requirements and demonstrated professional ability, competency and ethical conduct. Miller is a principal and executive vice president with Colliers International. In 2017, he was awarded the Commercial Real Estate Seminar Transaction of the Year and the 2017 Deal of the Year award from Colliers International|Omaha. Miller has more than 20 years of commercial real estate experience.