Company: OC
Filing Date: 2025-03-14
Form Type: DEF 14A
Source: 0001370946-25-000125
Chunk: 21

Company: Owens Corning
Filing Date: 2025-03-14
Form: DEF 14A
Chunk 21
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 C o n t e n t s

conduct, and foster a culture of honesty and accountability. This code covers all areas of professional conduct relating to service on the Board, including conflicts of interest, unfair or unethical use of corporate opportunities, strict protection of confidential information, compliance with all applicable laws and regulations, sustainability and oversight of ethics, and compliance by employees of the Company.

#### INSIDER TRADING POLICY
Owens Corning has adoptedan insider trading compliance policy (the “Insider Trading Policy”) that governs the purchase, sale, and/or other transactions of Owens Corning securities by its directors, officers and employees, and has implemented processes for the Company, that the Company believes are reasonably designed to promote compliance with insider trading laws, rules and regulations, and applicable NYSE listing standards.

The Insider Trading Policy prohibits the Company’s officers, directors, and employees and related persons and entities from trading in securities of Owens Corning and other companies with whom the Company transacts business while in possession of material, nonpublic information. The Insider Trading Policy also generally prohibits the Company’s officers, directors, and employees from disclosing material, nonpublic information regarding Owens Corning.

The Insider Trading Policy requires that the Company’s executive officers and directors and other designated employees only transact in Owens Corning securities during open window periods. In addition, the Insider Trading Policy requires that the Company’s executive officers and directors and certain other designated employees obtain approval in advance of transactions in Owens Corning securities.

#### ACCESS TO COMPANY POLICIES
The full texts of our Code of Business Conduct Policy, Ethics Policy for Chief Executive and Senior Financial Officers and Directors’ Code of Conduct are published on our website at http://www.owenscorning.com and will be made available in print upon request by any stockholder to the Corporate Secretary of the Company. To the extent required by applicable SEC rules or NYSE listing standards, we intend to post any amendments to or waivers from the Ethics Policy for Chief Executive and Senior Financial Officers to our website in the section titled “Corporate Governance.”

### BOARD AND COMMITTEE MEMBERSHIP
Our business, property, and affairs are managed under the direction of our Board. Members of our Board are kept informed of our business through discussions with our CEO, Chief Financial Officer, and other officers and employees, by reviewing materials provided to them, by visiting our offices and plants, and by participating in meetings of the Board and its committees. Board members are expected to regularly attend Board and committee meetings as well as our Annual Meetings of Stock