Company: WCC
Filing Date: 2025-04-10
Form Type: DEF 14A
Source: 0001193125-25-078098
Chunk: 18

Company: WESCO INTERNATIONAL INC
Filing Date: 2025-04-10
Form: DEF 14A
Chunk 18
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co 2025 Proxy Statement |     | Corporate Governance |     | 21 |

Inclusive and Respectful Workplace Culture We believe that our people and our high-performance culture are our greatest assets. We foster a culture that values and rewards employees based on merit. We also believe that making the most of the wealth of ideas, talents, skills, backgrounds, and perspectives from our people helps us do more and be more - together. We take pride in our talented and diverse workforce and aspire to become the employer of choice in our industry. Our Compensation Committee and Board are updated routinely by management on relevant programs and engage in regular discussions on matters such as workplace culture, talent development, and employee engagement. We require that personnel actions are administered without any form of discrimination, and in compliance with applicable law. We aim to support an inclusive and respectful workplace culture that:

| • |     | leverages the unique experiences and perspectives of our talented workforce to support Wesco’s mission; |

| • |     | furthers employee engagement and builds a respectful culture; |

| • |     | attracts and cultivates talent that bring new perspectives and thought processes to Wesco; and |

| • |     | supports the communities in which we operate. |

Wesco has established six Business Resource Groups (“BRGs”) to support and connect employees: Able (Employees with Diverse Abilities), Mosaic (Black, Latino, Indigenous, and People of Color), Pride (LGBTQ+), Spark (Early-Career Employees), VOLT (Veterans), and WIN (Women). These BRGs were created to foster a sense of community and inclusion and provide opportunities to network. All BRGs are open to all employees regardless of their identity. Human Rights –At Wesco, the way in which we conduct business is as important as the products and services that we provide. Our Human Rights policy includes protections relating to:

| • |     | Inclusion and Non-Discrimination |

| • |     | Harassment Prohibition |

| • |     | Child or Forced Labor Prohibition |

| • |     | Working Hours, Wages, and Benefits |

| • |     | Safety and Workplace Conditions |

| • |     | Disabled Employee Accommodations |

We also expect vendors to comply with our Supplier Code of Conduct, which incorporates these human rights protections. United Nations Global Compact Wesco’s focus on sustainability includes supporting the ten principles of the United Nations Global Compact, which we joined in 2017. We also support the United Nations Sustainable Development Goals. Our