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 * SIERRA WIRELESS INC   2. Issuer Name and Ticker or Trading Symbol NUMEREX CORP /PA/ [NMRX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 13811 WIRELESS WAY 3. Date of Earliest Transaction (Month/Day/Year) 12/07/2017 (Street) RICHMOND, BRITISH COLUMBIA, Z4 V6V 3A4 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 Class A Common Stock, no par value 12/07/2017   P   19,680,040 (1) (2) (3) A (1) (2) 19,680,040 (1) (2) (3) 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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SIERRA WIRELESS INC 13811 WIRELESS WAY RICHMOND, BRITISH COLUMBIA, Z4 V6V 3A4		X

Signatures

/s/ David G. McLennan, Chief Financial Officer and Secretary		12/08/2017
**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)	On December 7, 2017, pursuant to the Agreement and Plan of Merger, dated as of August 2, 2017 (the "Merger Agreement"), by and among Sierra Wireless, Inc. ("Sierra Wireless"), Wireless Acquisition Sub, Inc., a Delaware corporation and direct, wholly-owned subsidiary of Sierra Wireless ("Merger Sub"), and Numerex Corp. ("Numerex"), Merger Sub merged with and into Numerex, with Numerex surviving as a wholly-owned subsidiary of Sierra Wireless (the "Merger"). Pursuant to the Merger Agreement, at the Effective Time of the Merger (the "Effective Time"), each share of Class A Common Stock, no par value, of Numerex issued and outstanding immediately prior to the Effective Time was converted into the right to receive 0.1800 common shares, no par value, of Sierra Wireless (the "Merger Consideration").
(2)	(Continued from Footnote 1) Additionally, each outstanding restricted stock unit, in-the-money option and in-the-money stock appreciation right of Numerex was cancelled in exchange for the right to receive the Merger Consideration in accordance with the terms of the Merger Agreement. Subject to certain exceptions specified in the Merger Agreement, each outstanding warrant issued by Numerex (with the exception of that certain warrant, dated as of June 7, 2017, issued by Numerex to HCP-FVF, LLC) was cancelled in exchange for the right to receive the Merger Consideration or, if not exercised, was otherwise cancelled at the Effective Time.
(3)	This figure represents 100% of the shares of Class A Common Stock, no par value, of Numerex issued and outstanding immediately prior to the Effective Time.

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