13G Filing: Great Point Partners and Newlink Genetics Corp (NLNK)

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Exhibit
A

AGREEMENT REGARDING THE JOINT FILING
OF SCHEDULE 13G

The undersigned hereby agree as follows:

(i)      Each of them is individually eligible to use the Schedule 13G to which this Exhibit is attached, and such
Schedule 13G is filed on behalf of each of them; and

(ii)     Each of them is responsible for the timely filing of such Schedule 13G and any amendments thereto, and
for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible
for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or
has reason to believe that such information is inaccurate.

Date: June 5, 2017

GREAT POINT PARTNERS, LLC
By:  /s/ Dr. Jeffrey R. Jay, M.D.
Dr. Jeffrey R. Jay, M.D.,
as senior managing member
       
  /s/ Dr. Jeffrey R. Jay, M.D.
DR. JEFFREY R. JAY, M.D.
  /s/ Mr. David Kroin
MR. DAVID KROIN

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