13G Filing: Highbridge Capital Management and Pernix Therapeutics Holdings Inc. (PTX)

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Page 9 of 9 – SEC Filing

EXHIBIT 1

JOINT FILING AGREEMENT

The undersigned acknowledge and agree that the foregoing statement
on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule
13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The
undersigned acknowledge that each shall be responsible for the timely filing of such amendments, 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, except to the extent that he or it knows or has reason to believe that such information
is inaccurate.

DATED: July 31, 2017

HIGHBRIDGE CAPITAL MANAGEMENT, LLC
By: /s/ John Oliva
Name: John Oliva
Title: Managing Director
HIGHBRIDGE INTERNATIONAL LLC
By: Highbridge Capital Management, LLC
its Trading Manager
By: /s/ John Oliva
Name: John Oliva
Title: Managing Director

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