Statement of Changes in Beneficial Ownership (4)

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
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* Squires Nelson John III	2. Issuer Name and Ticker or Trading Symbol WESCO INTERNATIONAL INC [ WCC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP & COO
(Last) (First) (Middle) 225 WEST STATION SQUARE DRIVE	3. Date of Earliest Transaction (MM/DD/YYYY) 2/13/2020
(Street) PITTSBURGH, PA 15219 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	2/13/2020		M		1550 ⁽¹⁾	A	$0.00	11047	D
Common Stock	2/13/2020		F		508	D	$48.32	10539	D
Common Stock	2/16/2020		M⁽²⁾		1395	A	$0.00	11934	D
Common Stock	2/16/2020		F		387	D	$48.35	11547	D
Common Stock								2445	I	By Spouse

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		7. Title and Amount of Securities Underlying Derivative Security (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)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Appreciation Rights	$48.32	2/13/2020		A		21645		⁽³⁾	2/13/2030	Common Stock	21645	$0.00	21645	D
Restricted Stock Units	⁽⁴⁾	2/13/2020		A		6209		⁽⁵⁾	⁽⁵⁾	Common Stock	6209	$0.00	6209	D
Restricted Stock Units	⁽⁴⁾	2/16/2020		M			1395	⁽⁶⁾	⁽⁶⁾	Common Stock	0	$0.00	0	D

Explanation of Responses:
(1)	Represents shares acquired upon settlement of performance shares granted in 2017 under WESCO International, Inc.'s long-term incentive plan. Each performance share represented a contingent right to receive one share of Common Stock if WESCO International, Inc. achieved specified performance goals during the three-years ended December 31, 2019.
(2)	Reflects settlement of restricted stock units, the grant of which was previously reported on a Form 4, following the vesting of the restricted stock units.
(3)	Each Stock Appreciation Right becomes exercisable in three (3) equal, annual installments beginning on the first anniversary of the date of grant.
(4)	Each Restricted Stock Unit represents a contingent right to receive one share of Common Stock.
(5)	The Restricted Stock Units vest in three years from the date of the grant.
(6)	The Restricted Stock Units vested in full on February 16, 2020.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Squires Nelson John III 225 WEST STATION SQUARE DRIVE PITTSBURGH, PA 15219			SVP & COO