Luxfer Holdings PLC 10-K Item 1C cybersecurity disclosure. The Company states it is not aware of any successful third-party attempts to access its systems that have had, or are reasonably likely to have, a material effect on its business, operations, or financial condition. Describes risk management program aligned with DFARS/NIST 800-171, Sophos EDR deployment, incident response plan, third-party audits, GDPR compliance framework, and employee phishing simulations. No specific incident reported.