Company: WCC
Filing Date: 2025-03-27
Form Type: PRE 14A
Source: 0001193125-25-065641
Chunk: 56

Company: WESCO INTERNATIONAL INC
Filing Date: 2025-03-27
Form: PRE 14A
Chunk 56
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      — |     |                |         — |     |                  | 18,597 |     | $              |  2,801,800 |
| Khurana |     |                  |      — |     |                |         — |     |                  | 17,396 |     | $              |  2,600,569 |

| (1) | Includes the vesting of RSUs on February 11, 2024, February 13, 2024, and February 17, 2024, and shares withheld to cover FICA tax liability on outstanding restricted stock units for Mr. Engel and Mr. Squires who each met the retirement criteria under the related award agreements. The value realized was determined by multiplying the number of vested units by the closing market price of the Company’s Common Stock on the date of vesting. If the vesting date fell on a weekend or holiday, the closing market price of the Common Stock on the business day immediately preceding the vesting date was used to determine the value realized. |

| (2) | Includes the payment of performance shares which were earned and vested on February 15, 2024, upon confirmation of the Compensation Committee that performance goals had been achieved as described in the “Compensation Discussion and Analysis” section of this proxy statement, subheading “Performance Shares”. The value realized was determined by multiplying the number of vested shares by the closing market price of Wesco Common Stock on February 15, 2024, which was $147.44. |

| Wesco 2025 Proxy Statement |     | Compensation Tables |     | 55 |

Nonqualified Deferred Compensation The following table provides information for the executive officers named in the Summary Compensation Table regarding contributions, earnings, distributions, and year-endaccount balances with respect to the Wesco Distribution, Inc. Deferred Compensation Plan (the “Deferred Compensation Plan”).

| Name    |     | Year |      |     | Executive    
 Contribution 
 in Last      
 Fiscal Year  
 ($)(1)       |         |     | Registrant    
 Contributions 
 in Last       
 Fiscal Year   
 ($)(2)        |         |     | Aggregate   
 Earnings    
 in Last     
 Fiscal Year 
 ($)(3)      |         |     | Aggregate     
 Withdrawals/  
 Distributions 
 in Last       
 Fiscal Year   
 ($)(4)        |   |     | Aggregate 
 Balance   
 at Last   
 Fiscal    
 Year-End  
 ($)(5)    |           |
|:--------|:----|