Company: OC
Filing Date: 2025-03-14
Form Type: DEF 14A
Source: 0001370946-25-000125
Chunk: 12

Company: Owens Corning
Filing Date: 2025-03-14
Form: DEF 14A
Chunk 12
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 U.K. and Ireland operations from 2000 to 2005. Prior to joining SCA Packaging, Mr. Williams held several increasingly senior positions in sales, marketing, management, and operations with Rexam plc Packaging Resources, Inc., Huhtamaki, Alberto Culver (U.K.) Ltd., and MARS Group. Since April 2018, Mr. Williams has been a director of Form Technologies, Inc., a privately held leading global group of precision component manufacturers, based in Charlotte, North Carolina, where he has also been the non-executive chair of the Board of Directors since January 2019. He currently serves as Non-Executive Chairman of the Domtar group of companies and on its advisory board. 
 Key Qualifications, Experience, Skills, and Expertise Contributed to the Board                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
 Mr. Williams brings to the Board significant leadership experience from his former role as President and Chief Executive Officer of Domtar and previously as a senior executive in the European packaging industry. He developed an in-depth understanding of manufacturing, quality, and logistics serving in these roles. His extensive management experience provides the Board with a valuable perspective on the Company’s global manufacturing and supply chain operations. Mr. Williams’ experience in managing manufacturing businesses gives him valuable insight to assist the Company’s efforts to improve its operating efficiencies and cost position. Mr. Williams provides counsel to the Board as it evaluates the Company’s sustainability practices for its operations and supply chains. His significant experience in international business, operations, sales, and marketing also enables him to provide the Board with a valuable perspective on the Company’s goals of strengthening its position in core markets and products and expanding into new product adjacencies.                                                                                                                                                                                                                                                                                                                                                                                                        |

<div align='center'>RECOMMENDATION REGARDING PROPOSAL 1:</div>

| ü |     | The Board of Directors recommends that you vote"FOR"each Director Nominee. |

13

T a b l e o f C o n t e n t s

### GOVERNANCE INFORMATION

### CORPORATE GOVERNANCE PRACTICES AND HIGHLIGHTS
| Board Structure                                                                           |     |                                         |
| •90% of the director nominees are independent                                             
 •100% independent Audit, Compensation, Finance, and Governance and Nominating Committees  
 •Lead Independent Director with robust and defined responsibilities                       
 •Board access to senior management and independent advisors                               
 •Executive sessions of independent directors at every regular Board and Committee meeting |     | 90%