On August 8, 2022, Jeffrey S. Lee and Alena S. Brenner stepped down from their positions as members of the Board of Directors of Cornerstone Building Brands, Inc., effective August 8, 2022. The resignations of the Former Directors, who were appointed to the Board on July 25, 2022 in connection with the closing of the Company's going private transaction, were effected as part of certain planned administrative changes in connection with the Transaction and were not due to any disagreements with the Company on any matter relating to the Company's operations, policies or practices. Following such resignations from the Board, Mr. Lee and Ms. Brenner will continue in their current roles as the Executive Vice President and Chief Financial Officer and the Executive Vice President, General Counsel and Corporate Secretary, respectively, of the Company.

In addition, on August 8, 2022, the Board increased its size from three to nine directors and the following individuals were elected, effective immediately, to fill the vacancies created thereby: Kathleen J. Affeldt, Wilbert W. James Jr., Daniel Janki, John Krenicki Jr., Timothy O'Brien, Nathan K. Sleeper, Tyler Young and Jonathan L. Zrebiec (collectively, the “New Directors”). Rose Lee, an existing director of the Board, will continue to remain on the Board. Each of the New Directors will hold office until his or her successor has been elected and qualified or until his or her earlier death, resignation or removal.

There are no arrangements or understandings between the New Directors and any other persons pursuant to which the New Directors were elected as directors of the Company. The New Directors are not parties to any related person transactions (as defined in Item 404(a) of Regulation S-K of the Securities Act of 1933, as amended) with the Company. The Company has not yet determined the compensation the New Directors will receive for their service on the Board.

In connection with the election of the New Directors, the Board approved the formation and membership of the committees of the Board as set forth below: Audit Committee: Daniel Janki (Chair), Timothy O'Brien and Tyler Young Compensation Committee: Kathleen J. Affeldt (Chair), Wilbert W. James Jr., John Krenicki, Jr. and Jonathan L. Zrebiec Nominating and Corporate Governance Committee: John Krenicki, Jr. (Chair), Jonathan L. Zrebiec and Wilbert W. James Jr.