Nucor updates on May 2025 cyber incident; operations restored, no material impact

NUCOR CORP

Threat actor illegally accessed IT systems; limited data exfiltrated; access temporarily restricted to some applications.
Production at various facilities proactively halted as precaution; operations since restored.
Company believes incident not material to business, financial condition, or results; no material impact expected.
Remediation included incident response activation, system shutdown, backup restoration, external experts, and law enforcement notification.

Key facts

Extracted from this filing and checked against the source text.

Cybersecurity Incidents SEC 8-K Item 1.05 confidence 0.9

NUCOR CORP disclosed a cybersecurity incident: A threat actor illegally accessed the Company's information technology systems, exfiltrated limited data, and caused temporary limitations to access of applications supporting some operations. Impact: The incident has not had and is not reasonably likely to have a material impact on business operations, financial condition, or results of operations. Company determined it not material.

Nature: A threat actor illegally accessed the Company's information technology systems, exfiltrated limited data, and caused temporary limitations to access of applications supporting some operations
Impact: The incident has not had and is not reasonably likely to have a material impact on business operations, financial condition, or results of operations
Materiality: not material

Exact text from the filing

The cybersecurity incident has not had a material impact, and is not reasonably likely to have a material impact, on the Company’s business operations, and has not had a material impact, and is not reasonably likely to have a material impact, on the Company’s financial condition or results of operations.

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NUCOR CORP filing history →

Source: SEC EDGAR

accession 0001193125-25-143135

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