X0609 4 2026-06-11 0001096056 LUXFER HOLDINGS PLC LXFR 0001718603 Trimberger Lisa G true LUMNS LANE MANCHESTER X0 M27 8LN UNITED KINGDOM 1 0 Ordinary Shares 2026-06-11 4 M 0 8953 A 24811 I By Lisa G. Trimberger Trust Ordinary Shares 2026-06-11 4 S 0 4010 15.05 D 20801 I By Lisa G. Trimberger Trust Restricted Stock Units 2026-06-11 4 M 0 8953 D Ordinary Shares 8953 0 I See Footnote Restricted Stock Units 2026-06-11 4 A 0 6681 A Ordinary Shares 6681 6681 I See Footnote Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis. Owned by Lisa G. Trimberger Trust, of which the Reporting Person is the trustee and the Reporting Person's spouse is the sole beneficiary. The Restricted Stock Units fully vested on June 11, 2026. The above figure includes 331 additional Restricted Stock Units acquired from dividend equivalents. Restricted Stock Units accrue dividend equivalents, which are subject to the same terms and conditions as the underlying award and vest therewith. Represents the annual non-discretionary grant of awards to the Issuer's Non-Executive Directors in accordance with the terms of the Luxfer Holdings PLC Non-Executive Directors Equity Incentive Plan. The Restricted Stock Units vest on the day immediately preceding the Issuer's 2027 Annual General Meeting of Shareholders. /s/ Benjamin M. Coulson under Power of Attorney for Lisa G Trimberger 2026-06-15