Company: WCC
Filing Date: 2025-06-17
Form Type: 11-K
Source: 0000929008-25-000018
Chunk: 12

Company: WESCO INTERNATIONAL INC
Filing Date: 2025-06-17
Form: 11-K
Chunk 12
---
 |                   |  35,737,562 |     |         | — |     |         | — |     |       |    35,737,562 |
| Money market funds                                           |     |                   |  33,756,683 |     |         | — |     |         | — |     |       |    33,756,683 |
| Total assets in the fair value hierarchy                     |     |                   | 279,608,104 |     |         | — |     |         | — |     |       |   279,608,104 |
| Investments measured at NAV per share practical expedient(1) |     |                   |           — |     |         | — |     |         | — |     |       | 1,517,340,783 |
| Investments at fair value                                    |     | $                 | 279,608,104 |     | $       | — |     | $       | — |     | $     | 1,796,948,887 |

<div align='center'>9</div>

#### WESCO Distribution, Inc.

#### Retirement Savings Plan

#### Notes to Financial Statements
|                                                              |     | December 31, 2023 |               |     |         |   |     |         |   |     |       |               |
|:-------------------------------------------------------------|:----|:------------------|--------------:|:----|:--------|:--|:----|:--------|:--|:----|:------|--------------:|
|                                                              |     | Level 1           |               |     | Level 2 |   |     | Level 3 |   |     | Total |               |
| Shares of registered investment companies                    |     | $                 | 1,301,267,804 |     | $       | — |     | $       | — |     | $     | 1,301,267,804 |
| Wesco Stock Fund                                             |     |                   |    13,603,541 |     |         | — |     |         | — |     |       |    13,603,541 |
| Self-directed accounts                                       |     |                   |    27,101,978 |     |         | — |     |         | — |     |       |    27,101,978 |
| Money market funds                                           |     |                   |    32,703,816 |     |         | — |     |