Durow Wesley Dean 4

4 · MITEL NETWORKS CORP · Filed Mar 7, 2018

Form 4

Period: 2018-02-28

Chief Marketing Officer

Transactions

Exercise/Conversion
Common Shares
2018-03-05+10,125→ 30,474 total
Sale
Common Shares
2018-03-06$8.01/sh−2,609$20,894→ 27,865 total
Award
Restricted Stock Units
2018-02-28+36,675→ 36,675 total
→ Common Shares (36,675 underlying)
Award
Performance Share Units
2018-02-28+36,675→ 36,675 total
Exp: 2021-02-28→ Common Shares (36,675 underlying)
Exercise/Conversion
Restricted Stock Units
2018-03-05−10,125→ 20,250 total
Exercise: $0.00→ Common Shares (10,125 underlying)

Footnotes (5)

[F1]Represents the automatic withholding of Common Shares to satisfy tax withholding obligations in connection with the vesting of RSUs.
[F2]Represents 36,675 Common Shares underlying 36,675 RSUs granted on February 28, 2018. These RSUs vest in four equal installments annually starting February 28, 2019.
[F3]The late filing of this equity award is due to a clerical error.
[F4]Date exercisable for PSUs will vary for each vesting tranche based on achievement of share price performance milestones. The PSUs will expire three years from the date of grant.
[F5]Represents 40,500 Common Shares underlying 40,500 Restricted Stock Units ("RSUs") granted to Mr. Durow on March 4, 2016. These RSUs will vest as follows: (i) 10,125 of the RSUs will vest on March 4, 2017; (ii) 10,125 of the RSUs will vest on March 4, 2018; (iii) 10,125 of the RSUs will vest on March 4, 2019; and (iv) 10,125 of the RSUs will vest on March 4, 2020.

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