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): February 20, 2018

Registrant’s telephone number, including area code: (210) 592-1670

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:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

On February 20, 2018, EnerJex Resources, Inc., a Nevada corporation (the “Company” or “EnerJex”) issued a press release regarding the record date of its special meeting concerning the merger with AgEagle Aerial Systems, Inc.

Important Information and Where to Find It

This Form 8-K does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. A definitive proxy statement/registration statement and a proxy card has been filed with the SEC and will be mailed to the Company’s stockholders seeking any required stockholder approvals in connection with the Company’s proposed merger transaction. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, INVESTORS AND STOCKHOLDERS ARE URGED TO READ THE PROXY STATEMENT/REGISTRATION STATEMENT (INCLUDING ANY AMENDMENTS OR SUPPLEMENTS THERETO) AND ANY OTHER RELEVANT DOCUMENTS THAT THE COMPANY MAY FILE WITH THE SEC WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Stockholders may obtain, free of charge, copies of the definitive proxy statement/registration statement and any other documents filed by EnerJex with the SEC in connection with the proposed merger transaction at the SEC’s website (http://www.sec.gov), at EnerJex’s website, or by directing written request to: EnerJex Resources, Inc., 4040 Broadway, Suite 425, San Antonio, Texas 78209, Attention: Louis G. Schott, Interim CEO.

The Company and its directors and executive officers and AgEagle Aerial Systems, Inc. and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of the Company in connection with the proposed transaction. Information regarding the special interests of these directors and executive officers in the merger will be included in the proxy statement/registration statement referred to above. Additional information regarding the directors and executive officers of the Company is also included in the Company’s Definitive Proxy Statement on Schedule 14A relating to the 2016 Annual Meeting of Stockholders, which was filed with the SEC on April 7, 2017. This document is available free of charge at the SEC web site (www.sec.gov), at the Company’s website, or by directing a written request to the Company as described above.

SIGNATURES

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.

Exhibit Index