6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of: July 2022 Commission File Number: 001-36898

COLLIERS INTERNATIONAL GROUP INC. (Translation of registrant's name into English)

1140 Bay Street, Suite 4000 Toronto, Ontario, Canada M5S 2B4 (Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F [   ]      Form 40-F [ X ]

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): [   ]

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): [   ]

Indicate by check mark whether by furnishing the information contained in this Form, the Registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:

Yes [  ]                                                    No [X]

If “Yes” is marked, indicate the file number assigned to the Registrant in connection with Rule 12g3-2(b):  N/A

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

EXHIBIT INDEX

EdgarFiling EXHIBIT 99.1

Colliers completes investment in leading U.S. real estate investment firm

TORONTO and NEW YORK, July 06, 2022 (GLOBE NEWSWIRE) -- Leading diversified professional services and investment management company, Colliers (NASDAQ and TSX: CIGI), announced today it has completed its previously announced investment in Rockwood Capital, LLC (“Rockwood”), a leading U.S. real estate investment management firm with more than $12 billion of assets under management.

About Colliers

Colliers (NASDAQ, TSX: CIGI) is a leading diversified professional services and investment management company. With operations in 62 countries, our 17,000 enterprising professionals work collaboratively to provide expert real estate and investment advice to clients. For more than 27 years, our experienced leadership with significant inside ownership has delivered compound annual investment returns of 20% for shareholders. With annual revenues of $4.3 billion and $77 billion of assets under management, Colliers maximizes the potential of property and real assets to accelerate the success of our clients, our investors, and our people.  Learn more at corporate.colliers.com, Twitter @Colliers or LinkedIn.

About Rockwood

Rockwood Capital, LLC is a leading private real estate investment firm with offices in Los Angeles, San Francisco, and New York City. Since inception, the firm has managed funds and separate accounts on behalf of over 130 institutional investors, including public and private pension funds, sovereign wealth funds, endowments, foundations, insurance companies, and high-net worth individuals. Rockwood and its principals have invested in over $36 billion of real estate on behalf of clients through value-add funds, credit funds, and separate accounts.

For more information, please visit https://www.rockwoodcap.com/.

Non-GAAP Measures

We use the term assets under management (“AUM”) as a measure of the scale of our Investment Management operations. AUM is defined as the gross market value of operating assets and the projected gross cost of development properties of the funds, partnerships and accounts to which we provide management and advisory services, including capital that such funds, partnerships and accounts have the right to call from investors pursuant to capital commitments. Our definition of AUM may differ from those used by other issuers and as such may not be directly comparable to similar measures used by other issuers.

COMPANY CONTACTS:

Christian Mayer Chief Financial Officer (416) 960-9500