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 Act of 1934

Date of Report (Date of earliest event reported): September 11, 2013

Synthesis Energy Systems, Inc.
(Exact name of registrant as specified in its charter)

(713) 579-0600
(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 (see General Instruction A.2. below):

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CRF 240.133-4(c))

On September 11, 2013, Synthesis Energy Systems, Inc. issued a press release announcing that its Zao Zhuang joint venture has obtained bank financing in order to begin the work to restart its plant for the previously announced cooperation agreement with Xuecheng Energy to expand into producing and selling methanol. A copy of the press release is filed herewith as Exhibit 99.1.

Exhibits

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