Company: OC
Filing Date: 2025-03-14
Form Type: DEF 14A
Source: 0001370946-25-000125
Chunk: 87

Company: Owens Corning
Filing Date: 2025-03-14
Form: DEF 14A
Chunk 87
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5 . Stockholders will be able to vote their shares electronically during the Annual Meeting.

For admission to the Annual Meeting, you must have been a stockholder at the close of business on February 18, 2025, the record date. Only stockholders who are eligible to vote at the Annual Meeting or their authorized representatives are permitted to attend. You will need the 16-digit control number included on your proxy card or your voting instruction form. The Annual Meeting will begin promptly at 9:00 a.m. Eastern Time on April 15, 2025. We encourage you to access the Annual Meeting prior to the start time. Online access will begin at 8:30 a.m. Eastern Time.

The virtual Annual Meeting platform is fully supported across browsers (Firefox, Chrome, and Safari) and devices (desktops, laptops, tablets, and cell phones) running the most updated version of applicable software and plugins. Participants should ensure they have a strong internet connection wherever they intend to participate in the Annual Meeting. Participants should also allow plenty of time to log in and ensure that they can hear streaming audio prior to the start of the Annual Meeting.

WHAT IF I HAVE TECHNICAL DIFFICULTIES ATTENDING THE ANNUAL MEETING?

Technical support, including related technical support phone numbers, will be available on the virtual meeting platform at www.virtualshareholdermeeting.com/OC2025 beginning at 8:30 a.m. Eastern Time on April 15, 2025 through the conclusion of the Annual Meeting.

#### HOW DO I ASK QUESTIONS AT THE ANNUAL MEETING?
Stockholders will have substantially the same opportunities to participate as they would have at an in-person meeting. Stockholders may submit questions prior to the Annual Meeting through the Annual Meeting portal on the internet. All questions must be submitted no later than 11:59 p.m. Eastern Time on April 14, 2025. If you wish to submit a question prior to the Annual Meeting, you may do so by logging into www.proxyvote.com , and selecting the “Submit Questions” option.

Appropriate questions related to the business of the Annual Meeting (the proposals being voted upon) may be answered during the Annual Meeting, subject to time constraints.

Additional information regarding the ability of stockholders to ask questions during the Annual Meeting, related rules of conduct and other materials for the Annual Meeting will be available at www.virtualshareholdermeeting.com/OC2025 .

WHAT ARE THE VOTING REQUIREMENTS TO ELECT THE DIRECTORS AND TO