Bobby J. Griffin - 31 Dec 2025 Form 4 Insider Report for WESCO INTERNATIONAL INC (WCC)

Role: Director
Signature: /s/ Michele Nelson, as Attorney-in-Fact
Issuer symbol: WCC
Transactions as of: 31 Dec 2025
Net transactions value: +$19,375
Form type: 4
Filing time: 05 Jan 2026, 18:54:51 UTC
Previous filing: 02 Oct 2025
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
GRIFFIN BOBBY J	Director	225 WEST STATION SQUARE DRIVE, SUITE 700, PITTSBURGH	/s/ Michele Nelson, as Attorney-in-Fact	05 Jan 2026	0001183545

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WCC	Common Stock	Award	$0	+52	+0.17%	$0.000000	31,394	31 Dec 2025	Direct	F1
transaction	WCC	Common Stock	Award	$19,375	+79	+0.25%	$244.64	31,473	31 Dec 2025	Direct	F2

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

Explanation of Responses:

Id	Content
F1	Represents dividend equivalent rights ("DERs") in connection with the Issuer's quarterly dividend and accrued to the Reporting Person on restricted stock units ("RSUs") held by the Reporting Person. Each DER is the economic equivalent of one share of Issuer's common stock and vests on the same schedule as the underlying award.
F2	Represents deferred share units ("DSUs") credited to the Reporting Person's deferred compensation account pursuant to the Issuer's Deferred Compensation Plan for Non-Employee Directors (the "Plan"). Each DSU is the economic equivalent of one share of Issuer's common stock and is eligible for distribution in the form of Issuer's common stock based on the schedule elected by the Reporting Person in accordance with the Plan.

Content

Represents dividend equivalent rights ("DERs") in connection with the Issuer's quarterly dividend and accrued to the Reporting Person on restricted stock units ("RSUs") held by the Reporting Person. Each DER is the economic equivalent of one share of Issuer's common stock and vests on the same schedule as the underlying award.

Represents deferred share units ("DSUs") credited to the Reporting Person's deferred compensation account pursuant to the Issuer's Deferred Compensation Plan for Non-Employee Directors (the "Plan"). Each DSU is the economic equivalent of one share of Issuer's common stock and is eligible for distribution in the form of Issuer's common stock based on the schedule elected by the Reporting Person in accordance with the Plan.