This Amendment No. 1 is being filed jointly by the Reporting Persons and amends the Schedule 13G initially filed by the Reporting Persons with the Securities and Exchange Commission (the “SEC”) on November 7, 2018 (the “Schedule 13G”).

Except as set forth below, all Items of the Schedule 13G remain unchanged. All capitalized terms not otherwise defined herein shall have the meanings ascribed to such terms in the Schedule 13G.

Item 4.Ownership.

(a) and (b):

As of the close of business on December 31, 2018, each of the Reporting Persons may have been deemedto have beneficial ownership of661,694 shares of Common Stock issuable upon exercise of the Intracoastal Warrant,and all such shares of Common Stock represented beneficial ownership of approximately6.0% of the Common Stock,based on(1) 10,295,280 shares of Common Stock outstanding on November 12, 2018 as reported by the Issuer, plus (2) 661,694 shares of Common Stock issuable upon exercise of the Intracoastal Warrant.

(c) Number of shares as to which each Reporting Person has:

(i) Sole power to vote or to direct the vote:   0.

(ii) Shared power to vote or to direct the vote:  661,694 .

(iii) Sole power to dispose or to direct the disposition of  0.

(iv) Shared power to dispose or to direct the disposition of   661,694 .

Item 10. Certification

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under §240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: February 8, 2019