(1)Based on the public offering price. The registrant previously registered securities at an aggregate offering price not to exceed $100,000,000 on a Registration Statement on Form S-3 (File No. 333-215444), which was declared effective on March 10, 2017. In accordance with Rule 462(b) promulgated under the Securities Act, an additional amount of securities having a proposed maximum aggregate offering price of $6,316,973 is hereby registered. 

(2)The registration fee has been calculated in accordance with Rule 457(o) under the Securities Act.  

This Registration Statement shall become effective upon filing with the Securities and Exchange Commission in accordance with Rule 462(b) promulgated under the Securities Act.

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EXPLANATORY NOTE

This registration statement is being filed to register additional shares of our common stock, par value $0.001 per share, with an aggregate public offering price not to exceed $6,316,973, pursuant to Rule 462(b) of the Securities Act of 1933, as amended. This registration statement relates to our registration statement on Form S-3 (File No. 333-215444), which was declared effective by the Securities and Exchange Commission on March 10, 2017. In accordance with Rule 462(b), this registration statement incorporates by reference our registration statement on Form S-3 (File No. 333-215444), including all amendments, supplements and exhibits thereto and all information incorporated by reference therein, other than the exhibits included herein.

This registration statement is concurrently being filed by the Registrant with the British Columbia Securities Commission, as principal regulator, and the securities regulatory authorities in Ontario, Alberta, Saskatchewan, Manitoba, New Brunswick, Nova Scotia, Newfoundland and Labrador, and Prince Edward Island, in connection with the offering of such securities in Canada pursuant to the multi-jurisdictional disclosure system.

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PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 16. Exhibits

*Filed herewith. 

(1)Incorporated by reference to our Registration Statement on Form S-3 (File No. 333-215444), filed with the Securities and Exchange Commission on January 5, 2017. 

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II-1

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets the requirements for filing this Form S-3 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Vancouver, British Columbia, Canada, on the 8^th day of April, 2019.

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Amir Adnani as his true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to file and sign any and all amendments, including pre-effective and post-effective amendments, and any registration statement for the same offering that is to be effective under Rule 462(b) of the Securities Act, to this registration statement, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes may lawfully do or cause to be done by virtue hereof. This power of attorney shall be governed by and construed with the laws of the State of Nevada and applicable federal securities laws.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

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