Exhibit 99.1
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them to Schedule 13G (including additional amendments thereto) with respect to the American Depositary Shares, each representing 12 Ordinary Shares, par value £0.001 per share, of GW Pharmaceuticals PLC. This Joint Filing Agreement shall be filed as an Exhibit to such Statement. The undersigned acknowledge that each shall be responsible for the timely filing of any amendments to such joint filing and for the completeness and accuracy of the information concerning him or it contained herein and therein, but shall not be responsible for the completeness and accuracy of the information concerning the others.
Dated: February 14, 2017
| SCOPIA CAPITAL MANAGEMENT LP | |
| By: /s/ Samantha Nasello | |
| Name: Samantha Nasello | |
| Title: CCO | |
| SCOPIA MANAGEMENT, INC. | |
| By: /s/ Aaron Morse | |
| Name: Aaron Morse | |
| Title: Vice President | |
| By: /s/ Matthew Sirovich | |
| Name: Matthew Sirovich | |
| By: /s/ Jeremy Mindich | |
| Name: Jeremy Mindich | |
