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EXHIBIT A

JOINT FILING AGREEMENT

The undersigned hereby agree that the statement on Schedule 13G with respect to the Common Shares of Sucampo Pharmaceuticals, Inc. dated December 6, 2017 is, and any further amendments thereto signed by each of the undersigned shall be, filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

Dated: December 7, 2017

LINDEN CAPITAL L.P.

By: Linden GP LLC, its general partner

    By: /s/ Saul Ahn                        

    Saul Ahn,

    Authorized Signatory

LINDEN ADVISORS LP

By: /s/ Saul Ahn                                    

    Saul Ahn,

    General Counsel

LINDEN GP LLC

By: /s/ Saul Ahn                        

    Saul Ahn,

    Authorized Signatory

/s/ Siu Min Wong

     SIU MIN WONG