UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): June 26, 2014

Gramercy Property Trust Inc.

(Exact Name of Registrant as Specified in its Charter)

(212) 297-1000

(Registrant’s Telephone Number, including Area Code)

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:

On June 26, 2014, the stockholders of Gramercy Property Trust Inc. (the “Company”) approved Articles of Amendment to the Company’s Articles of Incorporation to increase the number of authorized shares of common stock, par value $0.001 per share, from 150,000,000 shares to 200,000,000 shares. The Articles of Amendment were filed with the Maryland State Department of Assessments and Taxation on June 27, 2014 and became effective on that date. The Articles of Amendment are attached hereto as Exhibit 3.1 and are incorporated herein by reference.

The annual meeting of stockholders (the “Annual Meeting”) of the Company was held on June 26, 2014, at which 57,889,942 shares of the Company’s common stock were represented in person or by proxy representing approximately 81.06% of the issued and outstanding shares of the Company’s common stock entitled to vote. At the Annual Meeting, the Company’s stockholders (i) elected seven directors to serve until the Company’s 2015 Annual Meeting and until their successors are duly elected and qualify; (ii) approved certain issuances of the Company’s common stock upon exchange of its 3.75% exchangeable senior notes due 2019; (iii) approved an amendment to the Company’s charter increasing the amount of common stock the Company is authorized to issue to 200,000,000 shares; (iv) ratified the selection of Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2014; and (v) approved, on an advisory basis, the compensation of the Company’s named executive officers. The proposals are described in detail in the Company’s 2014 Proxy Statement relating to the Annual Meeting.

The final results for the votes regarding each proposal are set forth below.

(i) The voting results with respect to the election of each director were as follows:

(ii) The voting results with respect to the approval of certain issuances of the Company’s common stock upon exchange of its 3.75% exchangeable senior notes due 2019 were as follows:

(iii) The voting results with respect to the approval of an amendment to the Company’s charter increasing the amount of common stock the Company is authorized to issue to 200,000,000 shares were as follows:

(iv) The voting results with respect to the ratification of the selection of Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2014 were as follows:

(v) The voting results with respect to the approval, on an advisory basis, of the compensation of the Company’s named executive officers were as follows:

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 hereunto duly authorized.