Nelson John Squires III - 02 Jul 2021 Form 4 Insider Report for WESCO INTERNATIONAL INC (WCC)

Role: EVP & GM, E&ES
Signature: /s/ Diane E. Lazzaris, Attorney-In-Fact
Issuer symbol: WCC
Transactions as of: 02 Jul 2021
Net transactions value: -$635,096
Form type: 4
Filing time: 07 Jul 2021, 17:12:41 UTC
Next filing: 15 Sep 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WCC	Common Stock	Options Exercise	$0	+13,983	+100%	$0.000000	28,000	02 Jul 2021	Direct	F1
transaction	WCC	Common Stock	Tax liability	$635,096	-6,122	-22%	$103.74	21,878	02 Jul 2021	Direct
holding	WCC	Common Stock						2,445	02 Jul 2021	By spouse

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	WCC	Restricted Stock Units	Options Exercise	$0	-13,983	-30%	$0.000000	32,630	02 Jul 2021	Common Stock	13,983		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit ("RSU") represents a contingent right to acquire one share of Issuer's common stock.
F2	On July 2, 2020, the Reporting Person was granted 46,613 RSUs that vest as follows: 30% on each of the first and second anniversaries of the grant date and 40% on the third anniversary of the grant date.