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): August 13, 2015

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 August 13, 2015, CBRE Services, Inc. (“Services”), a Delaware corporation and wholly-owned subsidiary of the Company, issued $600 million in aggregate principal amount of 4.875% Senior Notes due 2026 (the “Notes”) guaranteed on a full and unconditional basis by the Company and the subsidiaries that guarantee its senior credit facility. The Notes are governed by an Indenture, dated as of March 14, 2013 (the “Base Indenture”), among Services, the Company, certain of Services’ subsidiaries and Wells Fargo Bank, National Association, as trustee (the “Trustee”), as amended and supplemented by the Fourth Supplemental Indenture entered into among Services, the Company, certain of Services’ subsidiaries and the Trustee on August 13, 2015 (the “Fourth Supplemental Indenture” and together with the Base Indenture, the “Indenture”). The Notes were sold pursuant to an underwriting agreement, dated as of August 6, 2015, among Services, the Company, J.P. Morgan Securities LLC, HSBC Securities (USA) Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Wells Fargo Securities, LLC and Credit Suisse Securities (USA) LLC and the several underwriters listed in Schedule A thereto.

The Notes will mature on March 1, 2026 and bear interest at a rate of 4.875% per annum, payable semi-annually in arrears on March 1 and September 1 of each year, beginning on March 1, 2016.

Prior to December 1, 2025, Services will be entitled, at its option, redeem all or a portion of the Notes at a redemption price equal to the greater of (1) 100% of the principal amount of the Notes to be redeemed and (2) the sum of the present values of the remaining scheduled payments of principal and interest thereon to December 1, 2025 (not including any portions of payments of interest accrued as of the date of redemption), discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the adjusted treasury rate, as defined in the Indenture. In the case of each of clauses (1) and (2), accrued and unpaid interest, if any, will be payable to, but excluding, the date of redemption.

In addition, from and after December 1, 2025, Services will be entitled, at its option, to redeem all or a portion of the Notes at a redemption price equal to 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the date of redemption. Upon the occurrence of a change of control triggering event, as defined in the Indenture, Services must give holders of the Notes an opportunity to sell to Services’ their Notes at 101% of the principal amount of the Notes, plus accrued and unpaid interest, if any, to the date of purchase.

The Company and each subsidiary of Services that guarantees Services’ specified debt, as defined in the Indenture, fully and unconditionally guarantees the Notes on a senior unsecured basis. The guarantees by the guarantors of the Notes will rank pari passu to all existing and future senior indebtedness of the guarantors.

The Notes are senior unsecured obligations of Services. The Notes rank equal in right of payment with Services’ existing and future senior indebtedness and senior in right of payment to any of Services’ existing and future subordinated indebtedness. The Notes and guarantees will be effectively subordinated to all of Services’ secured debt (if any) to the extent of the value of the assets securing such debt and structurally subordinated to all of the existing and future liabilities of our subsidiaries that do not guarantee the Notes.

The Indenture contains covenants that limit Services’ ability and the ability of certain of Services’ subsidiaries to (i) create certain liens, (ii) enter into sale/leaseback transactions, and (iii) enter into mergers or consolidations. These covenants are subject to a number of important qualifications and exceptions contained in the Indenture.

Events of default under the Indenture include, among others, the following (subject in certain cases to grace and cure periods): nonpayment, breach of covenants in the Indenture, default of payment of principal at final maturity, acceleration of certain indebtedness, failure to pay certain judgments and cessation of the guarantees.

The foregoing description is not complete and is qualified in its entirety by reference to the complete text of the Indenture.

The Trustee, the underwriters, and their affiliates have in the past provided and from time to time in the future may provide the Company and its affiliates with certain commercial banking, financial advisory, investment banking and other services in the ordinary course of business, for which they have received and may receive customary payments of interest, fees and commissions.

The information set forth above under Item 1.01 is hereby incorporated by reference into this Item 2.03.

The following documents are attached as exhibits to this Current Report on Form 8-K:

“Safe Harbor” Statement Under the Private Securities Litigation Reform Act of 1995: This current report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements include, but are not limited to, statements related to future transactions between the Company and its affiliates and the Trustee and underwriters and their respective affiliates. These forward-looking statements involve known and unknown risks, uncertainties and other factors discussed in the Company’s filings with the SEC. Any forward-looking statements speak only as of the date of this current report and, except to the extent required by applicable securities laws, the Company expressly disclaims any obligation to update or revise any of them to reflect actual results, any changes in expectations or any change in events. If the Company does update one or more forward-looking statements, no inference should be drawn that it will make additional updates with respect to those or other forward-looking statements. For additional information concerning risks, uncertainties and other factors that may cause actual results to differ from those anticipated in the forward-looking statements, and risks to the Company’s business in general, please refer to its SEC filings, including its Annual Report on Form 10-K for the fiscal year ended December 31, 2014, and its quarterly reports on Form 10-Q for the quarterly periods ended March 31, 2015 and June 30, 2015.

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.

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