On May 15, 2023, Mark Livingston, Vice-President, Chief Accounting Officer and Controller of Quanex Building Products Corporation, resigned from his position to pursue other interests, effective immediately. Mr. Livingston's resignation was not related to any disagreement related to the Company's operations, policies, practices, or financial statements. Appointment of Principal Accounting Officer: On May 15, 2023, Karen Ettredge was named the Company's Vice President and Corporate Controller and will serve as the Company's principal accounting officer.

Ms. Ettredge, age 42, joined the Company in 2015 as SEC Reporting Manager, and has served as the Company's Director of SEC Reporting and Assistant Controller since 2020. Prior to joining the Company, Ms. Ettredge worked as Senior Manager – Treasury at Waste Management Inc. (2012-2014) and Senior Accountant – Financial Reporting at El Paso Corporation (2009-2012). Ms. Ettredge received BBA and MBA degrees from Texas Tech University and is a Certified Public Accountant.

By virtue of Ms. Ettredge's appointment, subject to formal approval of the Company's Compensation & Management Development Committee, she will become eligible to participate in the Company's executive severance policy as a Tier 2 participant.