EXHIBIT 99.1
JOINT FILING AGREEMENT
The undersigned hereby agree that the Statement on Schedule 13G filed herewith (and any amendments thereto), relating to the Common Stock of Arena Pharmaceuticals, Inc., a Delaware corporation, is being filed jointly with the Securities and Exchange Commission pursuant to Rule 13d-1(c) under the Securities Exchange Act of 1934, as amended, on behalf of each of the undersigned.
This Agreement may be executed in counterparts and each of such counterparts taken together shall constitute one and the same instrument.
Dated this 27th day of August, 2018.
PARTNER FUND MANAGEMENT, L.P.
By: Partner Fund Management GP, LLC its general partner
By:/s/ Darin Sadow Darin Sadow, Authorized Signatory
| PARTNER FUND MANAGEMENT GP, LLC
By:/s/ Darin Sadow Darin Sadow, Authorized Signatory
|
PARTNER INVESTMENT MANAGEMENT, L.P.
By: Partner Investment Management GP, LLC, its general partner
By:/s/ Darin Sadow Darin Sadow, Authorized Signatory
| PARTNER INVESTMENT MANAGEMENT GP, LLC
By:/s/ Darin Sadow Darin Sadow, Authorized Signatory
|
BRIAN D. GROSSMAN
By:/s/ Darin Sadow Darin Sadow, attorney-in-fact
| CHRISTOPHER M. JAMES
By:/s/ Darin Sadow Darin Sadow, attorney-in-fact
|
