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 OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * MATTHEWS TERENCE H   2. Issuer Name and Ticker or Trading Symbol MITEL NETWORKS CORP [MITL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chairman of the Board (Last) (First) (Middle) 390 MARCH ROAD, SUITE 110, OTTAWA, 3. Date of Earliest Transaction (Month/Day/Year) 03/03/2017 (Street) K2K 0G7 A6 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 03/03/2017   S   1,199 (1) D $ 6.4867 37,936 D   Common Shares               6,738,590 I Wesley Clover International Corporation (2) (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MATTHEWS TERENCE H 390 MARCH ROAD, SUITE 110 OTTAWA, K2K 0G7 A6	X		Chairman of the Board

Signatures

/s/ Terence H. Matthews		03/06/2017
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	This sale was made to cover taxes immediately following the vesting of previously granted RSUs that were distributed on March 2, 2017.
(2)	Dr. Matthews owns 100% of the outstanding voting shares of 4293711 Canada Inc. ("4293711 Canada") which in turn owns 99.9% of the outstanding voting shares of Wesley Clover International Corporation ("WCIC") (the remaining 0.01% of the outstanding voting shares of WCIC are owned by the Matthews Family Trust, of which Dr. Matthews is one of three trustees).
(3)	Pursuant to Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), each of Dr. Matthews and 4293711 Canada may be deemed the beneficial owner of all of the common shares (the "Common Shares") of Mitel Networks Corporation (the "Company") beneficially owned by WCIC. The filing of this Form 4 shall not be construed as an admission that the Reporting Persons share beneficial ownership of these shares, and the Reporting Persons expressly disclaim such beneficial ownership except to the extent of any pecuniary interest therein.

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