CIGI · Colliers International Group Inc.

TORONTO, March 16, 2026 (GLOBE NEWSWIRE) - Colliers International Group Inc. (TSX & NASDAQ: CIGI) (“Colliers” or the “Company”) today announced that its Annual and Special Meeting of Shareholders will be held virtually on March 31, 2026, at 11:00am ET. Attendees will have the opportunity to attend the meeting online, in real time, and shareholders and duly appointed proxyholders will be able to ask questions and vote through a live webcast. Shareholders or guests will not be able to attend the meeting in person. To attend the virtual meeting, please log in at www.virtualshareholdermeeting.com/CIGI2026 at least 15 minutes before the start of the meeting. Please ensure your browser is compatible by logging in early. The latest versions of Chrome, Safari, Edge or Firefox are supported. Shareholders who wish to vote their shares or ask a question will need to enter the control number included on the proxy materials that were mailed to them as well as contact details. The Company also

Planned transition strengthens largest platforms and recognizes Chris McLernon’s retirement TORONTO, March 05, 2026 (GLOBE NEWSWIRE) - Colliers (NASDAQ, TSX: CIGI), a leading diversified professional services and investment management company, today announced two key executive appointments that reinforce the Company’s long-term growth strategy. Effective immediately, Christian Mayer has been named Global Chief Financial Officer & CEO of Commercial Real Estate, and Elias Mulamoottil has been named Global Chief Investment Officer & CEO of Engineering. “With a combined four decades at Colliers, Christian and Elias bring deep experience, proven leadership, and a strong commitment to our enterprising culture,” said Jay Hennick, Founder, Global Chairman & CEO. “Their expanded mandates strengthen our largest platforms and ensure continuity as we continue to execute our global growth strategy company wide.” As Global Chief Financial Officer & CEO of Commercial Real Estate,

Two decades of global service excellence underscore Colliers’ commitment to client success TORONTO, Feb. 26, 2026 (GLOBE NEWSWIRE) - Colliers (NASDAQ, TSX: CIGI), a leading diversified professional services and investment management company, has been named to the 2026 Global 100 list produced by IAOP® in the Leader category for large, established global firms. This marks the 20 th consecutive year that Colliers has been recognized for global service excellence. IAOP’s annual list recognizes the world’s top outsourcing service providers and advisors based on rigorous evaluation criteria, including customer references, awards and certifications, programs for innovation, and corporate social responsibility. The IAOP Global 100 serves as a trusted resource for organizations seeking high-performing partners across a broad range of outsourcing and global services. “The 2026 Global 100 recognizes organizations that are redefining what excellence looks like in today’s global business

MADRID and LONDON, February 24, 2026 – Colliers announces the appointment of Laura Hernando as Chief Executive Officer (CEO) for Iberia, with her start scheduled in the second quarter of 2026. She succeeds Mikel Echavarren, who will maintain a key strategic role as Chairman for the Iberian region. Hernando will also continue as Managing Director of Hotels for Colliers Spain. Hernando brings more than two decades of expertise in the Iberian market. She has played a pivotal role in the country’s most significant hotel transactions, including single assets, portfolios, corporate deals, and financial restructurings. She has been a key member of Colliers since joining through the acquisition of IREA in 2018. Davoud Amel-Azizpour, CEO of Colliers EMEA, said: “Laura’s appointment as CEO reflects a long-term strategy and shared vision for the future of our Iberian business. With a proven track record of building successful businesses and leading high-performing,

TORONTO, Feb. 20, 2026 (GLOBE NEWSWIRE) - Colliers (NASDAQ and TSX: CIGI), a global leader in professional services and investment management, announced today that it has amended its revolving credit facility. The amended agreement extends the maturity to February 2031, providing significant long-term financial flexibility. The amended agreement maintains the total credit facility at US$2.25 billion and now includes a US$250 million accordion feature. The updated terms provide enhanced flexibility to support Colliers' ongoing acquisition strategy and internal growth initiatives. The facility’s sustainability-linked pricing metrics were also extended, reinforcing the Company's commitment to its sustainability goals. "This successful extension and amendment of our credit facility underscores the strength of our balance sheet and the confidence of our long-standing banking partners in our global diversified platform and disciplined growth strategy," said Michael Harding, Vice President,

Compounding growth with strong momentum entering 2026 Fourth quarter and full year operating highlights: Three months ended Twelve months ended December 31 December 31 (in millions of US$, except EPS) 2025 2024 2025 2024 Revenues $ 1,606.5 $ 1,501.6 $ 5,558.5 $ 4,822.0 Net Revenues (note 1) 1,428.1 1,312.8 4,866.5 4,279.6 Adjusted EBITDA (note 2) 245.1 225.3 732.5 644.2 Adjusted EPS (note 3) 2.34 2.26 6.58 5.75 GAAP operating earnings 135.5 121.4 371.0

Bolsters U.S. public transportation capabilities and deepens presence in a top infrastructure market TORONTO and PASADENA, Calif., Feb. 04, 2026 (GLOBE NEWSWIRE) - Leading diversified professional services and investment management company, Colliers (NASDAQ, TSX: CIGI), announced today that the U.S. division of its Engineering segment (“Colliers Engineering”) has acquired Ramos Consulting Services, Inc. (“Ramos CS”), a California-based provider of program management, construction management, and engineering services for major public transit projects. The addition of Ramos CS enhances Colliers Engineering’s capabilities in one of the most active transit markets in the United States. Under Colliers’ unique partnership model, Ramos CS’ senior leadership team will continue to lead the transit business in California and become significant shareholders in Colliers Engineering. Terms of the transaction were not disclosed. Founded in 2008, Ramos CS has become a trusted advisor to public

Expands Colliers’ global engineering reach, expertise, and growth opportunities TORONTO, Feb. 03, 2026 (GLOBE NEWSWIRE) - Colliers (NASDAQ, TSX: CIGI), a global leader in professional services and investment management, announced today it has entered into a definitive agreement to acquire Ayesa Engineering S.A.U. (“ Ayesa Engineering ” or “ Ayesa ”), the engineering division of Ayesa Inversiones S.L.U. (“ Ayesa Group ”). Ayesa Engineering is a leading multidiscipline engineering and project management firm headquartered in Seville, Spain, that provides technical consulting services across four continents. The addition solidifies Colliers’ Engineering segment as a formidable global player, now with operations in Europe, Latin America, the Middle East, and South Asia, and enhanced capabilities in Australia. On closing, Colliers Engineering will operate in 23 countries with nearly 14,000 professionals, delivering services across Property & Buildings, Infrastructure &

Launch of NFRX marks HSAM’s ETF debut Chicago, IL, January 30, 2026 – Harrison Street Asset Management (“HSAM”), a leading global alternative investment management firm with more than $108 billion in assets under management, announced today the launch of Harrison Street Infrastructure Active ETF (Ticker: NFRX) , the firm’s first ETF and a complement to its variety of closed-end, open-end and specialized vehicles across real asset strategies. The ETF, which started trading on Nasdaq today, is designed to provide investors with exposure to listed infrastructure companies globally. The Harrison Street Infrastructure Active ETF focuses on global listed infrastructure companies that provide essential services, benefiting from durable user demand, predictable cash flows, and high barriers to entry in often-regulated markets. NFRX will specifically invest in infrastructure companies that are within the utilities, midstream energy, digital, and transportation

Establishes entry into energy sector and enhances scale in Alberta TORONTO and CALGARY, Alberta, Jan. 29, 2026 (GLOBE NEWSWIRE) - Colliers (NASDAQ, TSX: CIGI) announced today that its Canadian engineering platform, Englobe Corporation (“Englobe”), has acquired Tetranex Solutions Inc. (“Tetranex”), a leading multidiscipline engineering consulting firm in Alberta. Under Colliers’ unique partnership model, Tetranex’s senior team will become shareholders of Englobe and play a key role in leadership going forward. Terms of the transaction were not disclosed. Founded in 2010, Tetranex’s 200 professionals provide specialized electrical, instrumentation and controls (EI&C), automation, and other engineering and procurement services primarily across the oil and gas, agri-food, and industrial sectors. “This transaction reaffirms our growth ambition by establishing a beachhead in the energy sector, a market poised to benefit from long-term tailwinds driven by increased demand for

PARIS, Jan. 23, 2026 – Colliers has appointed Ludovic Delaisse as Chief Executive Officer (CEO) of Colliers France, effective today. This marks the next step in a planned leadership transition designed to strengthen Colliers’ position in France and across EMEA. Delaisse succeeds Antoine Derville, who will continue as Chairman of Colliers France. Since 2021, Delaisse has served as Managing Director, overseeing all transactional and advisory service lines. He brings more than 30 years of industry experience, including senior roles at JLL and Cushman & Wakefield. Davoud Amel-Azizpour, CEO of Colliers EMEA, said: “Ludovic’s appointment reflects our commitment to developing exceptional talent and ensuring a smooth leadership transition. His deep expertise across transactional and advisory services, combined with his oversight of business development and project management services for investors, make him the ideal successor for our next chapter.” Ludovic

Acquisition enhances capabilities in Canadian mining sector TORONTO and SUDBURY, Ontario, Jan. 19, 2026 (GLOBE NEWSWIRE) - Global diversified professional services and investment management company, Colliers (NASDAQ, TSX: CIGI), announced today that its Canadian engineering platform, Englobe Corporation (“Englobe”), has acquired BESTECH Canada Limited (“BESTECH”), a leading multidisciplinary engineering consulting firm in Ontario. BESTECH’s senior team will play a key role in leadership going forward and will become shareholders of Englobe under Colliers’ unique partnership model. Terms of the transaction were not disclosed. Founded in 1995, BESTECH’s over 100 professionals provide mining, automation, electrical, power systems, structural, civil, and mechanical services to mining clients. “This investment accomplishes two key strategic priorities of expanding our capabilities in the Canadian resources industry and bolstering our footprint in Ontario,” said Mike Cormier, President of

TORONTO, Jan. 14, 2026 (GLOBE NEWSWIRE) - Colliers International Group Inc. (TSX & NASDAQ: CIGI) (“Colliers” or the “Company”) today announced that results for the fourth quarter and full year ended December 31, 2025 will be issued by press release on February 13, 2026, at approximately 7:00am ET. A conference call to review these results will take place at 11:00am ET on February 13, 2026 and will be hosted by Jay S. Hennick, Chairman & CEO, and Christian Mayer, CFO. The telephone numbers for this call are: Local – Toronto 1-289-819-1520 and Toll Free – NA 1-800-549-8228 with conference ID 20178. The conference call will also be accessible via webcast at corporate.colliers.com/en in the “Events” section. For anyone unable to listen to the scheduled call, the webcast replay will be available on the webcast attendee link. About Colliers Colliers (NASDAQ, TSX: CIGI) is a global diversified professional services and investment management company. Operating through three