X0306 4 2017-03-01 0001170534 MITEL NETWORKS CORP MITL 0001479524 CHARBONNEAU PETER 350 LEGGET DRIVE OTTAWA, A6 K2K 2W7 1 Common Shares 2017-03-01 4 S 0 4699 6.67 D 32275 D Common Shares 13927 I Held By Joan Charbonneau (spouse) Common Shares 2019 I Held By The Peter Charbonneau Trust #2 This sale was made to cover taxes following the vesting of RSUs that vested on February 28, 2017. 13,927 common shares ("Common Shares") of Mitel Networks Corporation (the "Company") are held by Mr. Charbonneau's wife, Joan Charbonneau. Mr. Charbonneau disclaims beneficial ownership of the Common Shares held by his wife and this report shall not be deemed an admission that Mr. Charbonneau is a beneficial owner of such shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose. 2,019 Common Shares of the Company are held by the Peter Charbonneau Trust #2, of which Mr. Charbonneau is the sole trustee. Mr. Charbonneau disclaims beneficial ownership of the Common Shares held by the Peter Charbonneau Trust #2, except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that Mr. Charbonneau is a beneficial owner of such shares for purposes of Section 16 of the Exchange Act or for any other purpose. /s/ Peter Charbonneau 2017-03-03