Mr. Christian Mayer reports

COLLIERS TO ANNOUNCE THIRD QUARTER RESULTS ON NOVEMBER 2, 2023

Colliers International Group Inc.'s results for the third quarter ended Sept. 30, 2023, will be issued by press release on Nov. 2, 2023, at approximately 7 a.m. ET.

A conference call to review these results will take place at 11 a.m. ET on Nov. 2, 2023, and will be hosted by Jay S. Hennick, chairman and chief executive officer, Chris McLernon, CEO, real estate services, and Christian Mayer, chief financial officer.

The telephone numbers for this call are:

Local -- Toronto: 1-416-764-8624

Toll-free -- North America: 1-888-259-6580

Conference ID 72598306.

The conference call will also be accessible via webcast on the Colliers website.

For anyone unable to listen to the scheduled call, the rebroadcast number will be 1-416-764-8692 or 1-877-674-7070 with passcode 598306 followed by the pound key. The rebroadcast and archive recording of the conference call will be available for 90 days following the call.

About Colliers International Group Inc.

Colliers s a leading diversified professional services and investment management company. With operations in 66 countries, its 18,000 enterprising professionals work collaboratively to provide expert real estate and investment advice to clients. For more than 28 years, the company's experienced leadership with significant inside ownership has delivered compound annual investment returns of approximately 20 per cent for shareholders. With annual revenues of $4.5-billion and $99-billion of assets under management, Colliers maximizes the potential of property and real assets to accelerate the success of its clients, its investors and its people.