Cornerstone Building Brands Reports Inducement Awards Pursuant to NYSE Rule 303A.08

Cornerstone Building Brands, Inc. (NYSE: CNR) (the “Company”), the largest manufacturer of exterior building products in North America, today announced, as required by the New York Stock Exchange (NYSE) governance rules, that the board has authorized the grant of employment inducement awards to Rose Lee in connection with her commencement of employment on September 6, 2021 as President and Chief Executive Officer of the Company.

The Company's Board of Directors (including a majority of the Company's independent directors) approved these equity inducement awards in reliance on an employment inducement exception to shareholder approval provided for in the NYSE governance rules. To comply with the terms of this exemption, these inducement equity grants require an immediate public announcement of the awards and written notice to the NYSE.

A maximum of 1,300,986 shares of the Company’s common stock may be issued in connection with these awards, assuming full vesting and maximum performance. Of this number, 262,466 are in the form of options to purchase shares of the Company’s common stock with an exercise price per share of $17.45, 183,268 are in the form of restricted stock units, each representing the right to acquire one share of the Company’s common stock subject to vesting in equal installments over a three-year period of continued employment, and 855,252 are in the form of performance share units, which figure represents the maximum number of shares that may be earned based on the achievement of performance metrics over a three-year performance period, and subject to Ms. Lee’s continued employment with the Company.

About Cornerstone Building Brands

Cornerstone Building Brands is the largest manufacturer of exterior building products for residential and low-rise non-residential buildings in North America. Headquartered in Cary, N.C., we serve residential and commercial customers across the new construction and repair and remodel markets. Our market leading portfolio of products spans vinyl windows, vinyl siding, stone veneer, metal roofing, metal wall systems and metal accessories. Cornerstone Building Brands’ broad, multichannel distribution platform and expansive national footprint includes more than 20,000 employees at manufacturing, distribution and office locations throughout North America. Corporate stewardship and environmental, social and governance (ESG) responsibility are deeply embedded in our culture, and we are committed to contributing positively to the communities where we live, work and play. For more information, visit us at www.cornerstonebuildingbrands.com

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