X0306 4 2017-11-06 0 0001170534 MITEL NETWORKS CORP MITL 0001269030 BALL BENJAMIN ONE LETTERMAN DRIVE BUILDING C - SUITE 410 SAN FRANCISCO CA 94129 1 0 0 0 Common Shares 2017-11-06 4 J 0 11538 0.00 A 26579 D On November 6, 2017, Arsenal Holdco I, S.a.r.l. made a distribution-in-kind, on a pro rata basis for no additional consideration of common shares of Mitel Networks Corporation. Mr. Ball received the reported shares in connection with such distribution. /s/ Benjamin Ball 2017-11-08