Christine Ann Wolf - 05 Mar 2026 Form 4 Insider Report for WESCO INTERNATIONAL INC (WCC)

Role: EVP & CHRO
Signature: /s/ Michele Nelson, as Attorney-in-Fact
Issuer symbol: WCC
Transactions as of: 05 Mar 2026
Net transactions value: -$242,734
Form type: 4
Filing time: 06 Mar 2026, 16:24:59 UTC
Previous filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Wolf Christine Ann	EVP & CHRO	225 WEST STATION SQUARE DRIVE, SUITE 700, PITTSBURGH	/s/ Michele Nelson, as Attorney-in-Fact	06 Mar 2026	0001514429

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WCC	Common Stock	Options Exercise		+5,231	+17%	$48.32^*	35,642	05 Mar 2026	Direct
transaction	WCC	Common Stock	Disposed to Issuer		-897	-2.5%	$281.84^*	34,745	05 Mar 2026	Direct
transaction	WCC	Common Stock	Tax liability		-1,896	-5.5%	$281.84^*	32,849	05 Mar 2026	Direct
transaction	WCC	Common Stock	Sale	$242,734	-844	-2.6%	$287.60	32,005	05 Mar 2026	Direct

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	Stock Appreciation Rights	Options Exercise		-5,231	-100%	$0.000000^*	0	05 Mar 2026	Common Stock	5,231	$48.32	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The stock appreciation rights became exercisable in three equal annual installments beginning on the first anniversary of the February 13, 2020 grant date.