UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): March 21, 2016

CBRE GROUP, INC.

(Exact name of registrant as specified in its charter)

(213) 613-3333

Registrant’s Telephone Number, Including Area Code

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

This Current Report on Form 8-K is filed by CBRE Group, Inc., a Delaware corporation (the “Company”), in connection with the matters described herein.

On March 21, 2016, the Company, CBRE Services, Inc., a subsidiary of the Company (“Services”), certain subsidiaries of Services, the lenders party thereto, and Credit Suisse AG, as Administrative Agent, entered into a Second Amendment (the “Second Amendment”) to the Second Amended and Restated Credit Agreement, dated as of January 9, 2015 (as amended by Amendment No. 1 dated as of May 28, 2015 and the Incremental Assumption Agreement dated as of September 3, 2015, the “Credit Agreement”) to which they are a party. The Second Amendment amends the Credit Agreement to provide for, among other things, (i) up to $200 million of additional Domestic Revolving Credit Commitments (as defined in the Credit Agreement) and (ii) the extension of the maturity of all of the outstanding Revolving Credit Commitments (as defined in the Credit Agreement) to March 2021. Giving effect to the Second Amendment, the total Domestic Revolving Credit Commitments are now $2.3 billion, and the total Revolving Credit Commitments are now $2.8 billion.

The foregoing description of the Second Amendment does not purport to be complete and is qualified in its entirety by reference to the Second Amendment, which is filed as Exhibit 10.1 hereto and is incorporated herein by reference.

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The information set forth under Item 1.01 of this Current Report on Form 8-K is hereby incorporated by reference into this Item 2.03.

The following document is an exhibit to this Current Report on Form 8-K:

SIGNATURE

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

EXHIBIT INDEX