13D Filing: Intersouth Partners VI LP and Alimera Sciences Inc (ALIM)

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CUSIP No. 016259103 Page
16
of 19

Exhibit A

AGREEMENT REGARDING THE JOINT FILING OF
AMENDMENT NO. 1 TO SCHEDULE 13D

The undersigned, being duly authorized
thereunto, hereby execute this agreement as an exhibit to this Amendment No. 1 to Schedule 13D to evidence the agreement of the below-named parties, in accordance with the rules promulgated pursuant to the Securities Exchange Act of 1934, to
file this Schedule jointly on behalf of each such party.

Date: June 8, 2017

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