Sec Form 4 Filing - Touray Mahawa Vanessa @ MITEL NETWORKS CORP - 2017-08-18

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Touray Mahawa Vanessa 2. Issuer Name and Ticker or Trading Symbol MITEL NETWORKS CORP [ MITL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Senior Vice President, Finance (Last) (First) (Middle) 350 LEGGET DRIVE, OTTAWA, A6 3. Date of Earliest Transaction (MM/DD/YY) 08/18/2017 (Street) K2K2W7 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Shares 08/21/2017 S 100 D $ 8.085 2,770 D Common Shares 08/21/2017 S 2,770 D $ 8.0856 0 D Common Shares 08/21/2017 M 3,063 A $ 4 3,063 D Common Shares 08/21/2017 S 3,063 D $ 8.085 0 D Common Shares 08/21/2017 M 5,000 A $ 3.8 5,000 D Common Shares 08/21/2017 S 5,000 D $ 8.089 0 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Options (Common Shares) ( 1 ) 08/18/2017 J( 1 ) 7,500 ( 2 ) 07/15/2017 Common Shares 7,500 ( 1 ) 0 D Options (Common Shares) $ 4 08/21/2017 M 3,063 ( 3 ) 07/07/2018 Common Shares 3,063 $ 0 0 D Options (Common Shares) $ 3.8 08/21/2017 M 5,000 ( 4 ) 07/01/2020 Common Shares 5,000 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Touray Mahawa Vanessa 350 LEGGET DRIVE OTTAWA, A6 K2K2W7 Senior Vice President, Finance Signatures /s/Vanessa Mahawa Kanu 08/22/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents 7,500 unexercised and out-of-the-money stock options previously granted to Ms. Touray that expired on August 18, 2017. The expiry date for such options had been extended in accordance with the 2006 Equity Incentive Plan, to August 18, 2017 as a result of the original expiry date of July 15, 2017 coinciding with a black-out period for the Issuer. ( 2 )7,500 stock options to purchase Common Shares of the Company were granted to Ms. Touray on July 15, 2010. 468 options vested on October 15, 2010 and vested in approximately equal installments every three months thereafter until July 15, 2014. ( 3 )3,063 stock options to purchase Common Shares of the Company were granted to Ms. Touray on July 7, 2011. 437 options vested on October 7, 2011 and vested in equal installments every three months thereafter until July 7, 2015. ( 4 )5,000 stock options to purchase Common Shares of the Company were granted to Ms. Touray on July 1, 2013. 312 options vested on October 1, 2013 and are scheduled to vest in approximately equal installments every three months thereafter until July 1, 2017.

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