X0306 4 2018-11-30 0 0001170534 MITEL NETWORKS CORP MITL 0001692658 Hiscock Gregory James 350 LEGGET DRIVE OTTAWA A6 K2K 2W7 ONTARIO, CANADA 0 1 0 0 See Remarks. Common Shares 2018-11-30 4 D 0 13325 11.15 D 0 D Options (Common Shares) 10.11 2018-11-30 4 D 0 10000 D 2018-04-03 2021-04-03 Common Shares 10000 0 D Options (Common Shares) 9.70 2018-11-30 4 D 0 13200 D 2022-03-05 Common Shares 13200 0 D Restricted Stock Units 0.00 2018-11-30 4 D 0 3100 D Common Shares 3100 0 D Restricted Stock Units 0.00 2018-11-30 4 D 0 6000 D Common Shares 6000 0 D Restricted Stock Units 0.00 2018-11-30 4 D 0 18750 D Common Shares 18750 0 D Restricted Stock Units 0.00 2018-11-30 4 D 0 750 D Common Shares 750 0 D Restricted Stock Units 0.00 2018-11-30 4 D 0 20000 D Common Shares 20000 0 D On November 30, 2018 (the "Closing Date"), MLN AcquisitionCo ULC (the "Purchaser") acquired all of the outstanding common shares of Mitel Networks Corporation (the "Issuer") under a plan of arrangement under the Canada Business Corporations Act (the "Plan of Arrangement"), and Issuer became a wholly owned subsidiary of the Purchaser, an entity currently owned and controlled by funds affiliated with Searchlight Capital Partners, L.P., a private equity investment group. Pursuant to the Plan of Arrangement, each common share was transferred to the Purchaser in exchange for the right to receive US$11.15 in cash, without interest and less any applicable withholding taxes. Represents 13,200 options to purchase common shares (the "Options"), of which 11,550 were fully exercisable as of the Closing Date and the remaining 1,650 Options would have vested in equal installments on December 5, 2018 and March 5, 2019. Pursuant to the Plan of Arrangement, Options were cancelled in exchange for the right to receive an amount equal to the excess, if any, of US$11.15 over the exercise price of such option, less any applicable withholding taxes. Represents 3,100 common shares underlying 3,100 restricted stock units (each an "RSU") granted on March 5, 2015. None of these RSUs were fully exercisable as of the Closing Date (each a "Non-Exercisable RSU") and all of them would have vested on March 5, 2019. Represents 6,000 common shares underlying 6,000 RSUs granted on March 4, 2016. As of the Closing Date, all of these RSUs were Non-Exercisable RSUs and would have vested in two equal installments annually starting March 4, 2019. Represents 18,750 common shares underlying 18,750 RSUs granted on March 1, 2017. As of the Closing Date, 6,250 of these RSUs were fully exercisable (each an "Exercisable RSU") as of March 1, 2018 and the remaining 12,500 RSUs were Non-Exercisable RSUs and would have vested in two equal installments annually starting March 1, 2019. Represents 750 common shares underlying 750 RSUs granted on April 7, 2017. As of the Closing Date, all of these RSUs were Non-Exercisable RSUs and would have vested in three equal installments annually starting April 7, 2019. Represents 20,000 common shares underlying 20,000 RSUs granted on February 28, 2018. As of the Closing Date, all of these RSUs were Non-Exercisable RSUs and would have vested in four equal installments annually starting February 28, 2019. Pursuant to the Plan of Arrangement, each Non-Exercisable RSU was cancelled in exchange for the right to receive US$11.15 in cash, less any applicable withholding taxes, following the date such Non-Exercisable RSUs would have vested in accordance with their terms, subject to the Reporting Person's continued employment through such date. Pursuant to the Plan of Arrangement, each Exercisable RSU was cancelled in exchange for the right to receive US$11.15 in cash, less any applicable withholding taxes. Mr. Hiscock's title is Vice President, General Counsel and Corporate Secretary. /s/ Gregory James Hiscock 2018-12-04