WESCO INTERNATIONAL INC — Director's Dealing 2021

May 14, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESCO INTERNATIONAL INC (WCC)
CIK: 0000929008
Period of Report: 2021-05-11

Reporting Person: ENGEL JOHN (Director, Chairman, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-11	Common Stock	M	175234	$42.44	Acquired	356556	Direct
2021-05-11	Common Stock	D	69995	$106.25	Disposed	286561	Direct
2021-05-11	Common Stock	F	46074	$106.25	Disposed	240487	Direct
2021-05-12	Common Stock	S	18495	$101.95	Disposed	221992	Direct
2021-05-12	Common Stock	S	18082	$102.86	Disposed	203910	Direct
2021-05-12	Common Stock	S	11408	$103.93	Disposed	192502	Direct
2021-05-12	Common Stock	S	10949	$104.75	Disposed	181553	Direct
2021-05-12	Common Stock	S	231	$105.53	Disposed	181322	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-11	Stock Appreciation Right	$42.44	M	175234	Disposed	2026-02-16	Common Stock (175234)	Direct

Footnotes

F1: Represents weighted average price paid for the shares sold at prices ranging from $101.37 to $102.35. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

F2: Represents weighted average price paid for the shares sold at prices ranging from $102.37 to $103.36. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

F3: Represents weighted average price paid for the shares sold at prices ranging from $103.37 to $104.36. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

F4: Represents weighted average price paid for the shares sold at prices ranging from $104.37 to $105.36. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

F5: Represents weighted average price paid for the shares sold at prices ranging from $105.37 to $105.67. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

F6: The Stock Appreciation Rights became exercisable in three (3) equal, annual installments beginning on the first anniversary of the February 16, 2016 grant date.