NUCOR CORP

Item 1.05. Material Cybersecurity Incidents. Nucor Corporation (the “Company”) recently identified a cybersecurity incident involving unauthorized third party access to certain information technology systems used by the Company. Upon detecting the incident, the Company began promptly taking steps to contain and respond to the incident, including activating its incident response plan, proactively taking potentially affected systems offline and implementing other containment, remediation, or recovery measures. The Company is actively investigating the incident with the assistance of leading external cybersecurity experts and has notified federal law enforcement authorities. As of the date of this filing and in an abundance of caution, the Company temporarily and proactively halted certain production operations at various locations. However, the Company is currently in the process of restarting the affected operations. As the investigation of the incident is ongoing, the Company will continue to monitor the timing and materiality of the incident. Forward-Looking Statements Certain statements made in this report, or in other public filings, press releases, or other written or oral communications made by Nucor, which are not historical facts are forward-looking statements subject to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements involve risks and uncertainties which we expect will or may occur in the future and may impact our business, financial condition and results of operations. The words “anticipate,” “believe,” “expect,” “intend,” “project,” “may,” “will,” “should,” “could” and similar expressions are intended to identify those forward-looking statements. These forward-looking statements reflect the C