Ownership Submission
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 *
BALL BENJAMIN
  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
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
ONE LETTERMAN DRIVE, BUILDING C - SUITE 410
3. Date of Earliest Transaction (Month/Day/Year)
11/30/2018
(Street)

SAN FRANCISCO, CA 94129
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 (1) (2) 11/30/2018   D   31,199 D $ 11.15 0 D  

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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
Options (Common Shares) $ 3.05 11/30/2018   D     18,819 12/23/2011 12/23/2018 Common Shares 18,819 (3) 0 I Owned by Francisco Partners Management, LLC (4)
Options (Common Shares) $ 3.44 11/30/2018   D     18,131 03/07/2012 03/07/2019 Common Shares 18,131 (3) 0 I Owned by Francisco Partners Management, LLC (4)
Options (Common Shares) $ 4.22 11/30/2018   D     22,343 03/07/2012 03/07/2019 Common Shares 22,343 (3) 0 I Owned by Francisco Partners Management, LLC (4)
Options (Common Shares) $ 2.61 11/30/2018   D     21,569 09/06/2012 09/06/2019 Common Shares 21,569 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 3.06 11/30/2018   D     20,194 12/06/2012 12/06/2019 Common Shares 20,194 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 3.94 11/30/2018   D     20,263 03/07/2013 03/07/2020 Common Shares 20,263 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 3.8 11/30/2018   D     20,263 07/01/2013 07/01/2020 Common Shares 20,263 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 4.64 11/30/2018   D     8,588 09/05/2013 09/05/2020 Common Shares 8,588 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 9.58 11/30/2018   D     7,061 12/12/2013 12/12/2020 Common Shares 7,061 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 8.79 11/30/2018   D     6,909 02/05/2014 02/05/2021 Common Shares 6,909 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 10.83 11/30/2018   D     6,828 05/20/2014 05/20/2021 Common Shares 6,828 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 9.96 11/30/2018   D     6,828 08/14/2014 08/14/2021 Common Shares 6,828 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 9.96 11/30/2018   D     6,972 11/13/2014 11/13/2021 Common Shares 6,972 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 9.7 11/30/2018   D     966 03/05/2015 03/05/2022 Common Shares 966 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 8.94 11/30/2018   D     20,000 12/31/2015 05/14/2022 Common Shares 20,000 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Options (Common Shares) $ 7.17 11/30/2018   D     10,000 03/04/2017 03/04/2023 Common Shares 10,000 (3) 0 I Owned by Francisco Partners Management, LLC(4)
Restricted Stock Units (5) 11/30/2018   D     14,500   (5)   (5) Common Shares 14,500 (5) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
BALL BENJAMIN
ONE LETTERMAN DRIVE
BUILDING C - SUITE 410
SAN FRANCISCO, CA 94129
  X      

Signatures

 /s/ Benjamin Ball   12/04/2018
**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) 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.
(2) 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.
(3) Pursuant to the Plan of Arrangement, options to purchase common shares (the "Options") were accelerated and all 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.
(4) Benjamin Ball is a partner of Francisco Partners Management, LLC ("Francisco Partners"), has voting and investment power over the common shares of the Issuer held by Francisco Partners. Mr. Ball expressly disclaims such beneficial ownership except to the extent of any pecuniary interest therein.
(5) Represents 14,500 common shares underlying 14,500 restricted stock units. Pursuant to the Plan of Arrangement, each restricted share unit was cancelled in exchange for the right to receive US$11.15 in cash, less any applicable withholding taxes.

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