{"transactions":[{"id":738427,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38342,"kind":"person","name":"Watson Stewart Robert","position":1,"cik":"0002102976","reported_name":"Watson Stewart Robert","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T12:25:06.000Z","date":"2026-06-11","kind":"grant","planned":false,"acquired":true,"shares":10341,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"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. 4,516 Restricted Stock Units relates to Mr Watson's 2025/26 award. The Restricted Stock Units vest on the day immediately preceding the Issuer's 2027 Annual General Meeting of Shareholders."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"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. 4,516 Restricted Stock Units relates to Mr Watson's 2025/26 award. The Restricted Stock Units vest on the day immediately preceding the Issuer's 2027 Annual General Meeting of Shareholders."}],"balance_after":10341,"derivative":{"underlying":"Ordinary Shares","underlying_shares":10341},"source":{"system":"sec-edgar","filing":"0001437749-26-020583","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020583/rdgdoc.xml","form_type":"4"}},{"id":738431,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38343,"kind":"person","name":"Hipple Richard J","position":1,"cik":"0001311365","reported_name":"Hipple Richard J","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:28:04.000Z","date":"2026-06-11","kind":"grant","planned":false,"acquired":true,"shares":6681,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."}],"balance_after":6681,"derivative":{"underlying":"Ordinary Shares","underlying_shares":6681},"source":{"system":"sec-edgar","filing":"0001437749-26-020575","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020575/rdgdoc.xml","form_type":"4"}},{"id":738430,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38343,"kind":"person","name":"Hipple Richard J","position":1,"cik":"0001311365","reported_name":"Hipple Richard J","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:28:04.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":false,"shares":8953,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Restricted Stock Units fully vested on June 11, 2026. The above figure includes 311 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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Restricted Stock Units fully vested on June 11, 2026. The above figure includes 311 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."}],"balance_after":0,"derivative":{"underlying":"Ordinary Shares","underlying_shares":8953},"source":{"system":"sec-edgar","filing":"0001437749-26-020575","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020575/rdgdoc.xml","form_type":"4"}},{"id":738429,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38343,"kind":"person","name":"Hipple Richard J","position":1,"cik":"0001311365","reported_name":"Hipple Richard J","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:28:04.000Z","date":"2026-06-11","kind":"sale","planned":false,"acquired":false,"shares":4010,"price":15.05,"value":60350.5,"ownership":{"direct":true},"balance_after":32920,"source":{"system":"sec-edgar","filing":"0001437749-26-020575","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020575/rdgdoc.xml","form_type":"4"}},{"id":738428,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38343,"kind":"person","name":"Hipple Richard J","position":1,"cik":"0001311365","reported_name":"Hipple Richard J","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:28:04.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":true,"shares":8953,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."}],"balance_after":36930,"source":{"system":"sec-edgar","filing":"0001437749-26-020575","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020575/rdgdoc.xml","form_type":"4"}},{"id":738425,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38340,"kind":"person","name":"Trimberger Lisa G","position":1,"cik":"0001718603","reported_name":"Trimberger Lisa G","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:26:52.000Z","date":"2026-06-11","kind":"grant","planned":false,"acquired":true,"shares":6681,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Owned by Lisa G. Trimberger Trust, of which the Reporting Person is the trustee and the Reporting Person's spouse is the sole beneficiary."}],"balance_after":6681,"derivative":{"underlying":"Ordinary Shares","underlying_shares":6681},"source":{"system":"sec-edgar","filing":"0001437749-26-020573","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020573/rdgdoc.xml","form_type":"4"}},{"id":738424,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38340,"kind":"person","name":"Trimberger Lisa G","position":1,"cik":"0001718603","reported_name":"Trimberger Lisa G","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:26:52.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":false,"shares":8953,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Owned by Lisa G. Trimberger Trust, of which the Reporting Person is the trustee and the Reporting Person's spouse is the sole beneficiary."}],"balance_after":0,"derivative":{"underlying":"Ordinary Shares","underlying_shares":8953},"source":{"system":"sec-edgar","filing":"0001437749-26-020573","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020573/rdgdoc.xml","form_type":"4"}},{"id":738423,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38340,"kind":"person","name":"Trimberger Lisa G","position":1,"cik":"0001718603","reported_name":"Trimberger Lisa G","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:26:52.000Z","date":"2026-06-11","kind":"sale","planned":false,"acquired":false,"shares":4010,"price":15.05,"value":60350.5,"ownership":{"direct":false,"nature":"By Lisa G. Trimberger Trust"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Owned by Lisa G. Trimberger Trust, of which the Reporting Person is the trustee and the Reporting Person's spouse is the sole beneficiary."}],"balance_after":20801,"source":{"system":"sec-edgar","filing":"0001437749-26-020573","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020573/rdgdoc.xml","form_type":"4"}},{"id":738422,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38340,"kind":"person","name":"Trimberger Lisa G","position":1,"cik":"0001718603","reported_name":"Trimberger Lisa G","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:26:52.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":true,"shares":8953,"ownership":{"direct":false,"nature":"By Lisa G. Trimberger Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Owned by Lisa G. Trimberger Trust, of which the Reporting Person is the trustee and the Reporting Person's spouse is the sole beneficiary."}],"balance_after":24811,"source":{"system":"sec-edgar","filing":"0001437749-26-020573","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020573/rdgdoc.xml","form_type":"4"}},{"id":738421,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38339,"kind":"person","name":"Stein Sylvia Ann","position":1,"cik":"0001729007","reported_name":"Stein Sylvia Ann","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:25:58.000Z","date":"2026-06-11","kind":"grant","planned":false,"acquired":true,"shares":6681,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."}],"balance_after":6681,"derivative":{"underlying":"Ordinary Shares","underlying_shares":6681},"source":{"system":"sec-edgar","filing":"0001437749-26-020571","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020571/rdgdoc.xml","form_type":"4"}},{"id":738420,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38339,"kind":"person","name":"Stein Sylvia Ann","position":1,"cik":"0001729007","reported_name":"Stein Sylvia Ann","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:25:58.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":false,"shares":8953,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"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."}],"balance_after":0,"derivative":{"underlying":"Ordinary Shares","underlying_shares":8953},"source":{"system":"sec-edgar","filing":"0001437749-26-020571","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020571/rdgdoc.xml","form_type":"4"}},{"id":738419,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38339,"kind":"person","name":"Stein Sylvia Ann","position":1,"cik":"0001729007","reported_name":"Stein Sylvia Ann","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:25:58.000Z","date":"2026-06-11","kind":"sale","planned":false,"acquired":false,"shares":4010,"price":15.05,"value":60350.5,"ownership":{"direct":true},"balance_after":14844,"source":{"system":"sec-edgar","filing":"0001437749-26-020571","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020571/rdgdoc.xml","form_type":"4"}},{"id":738418,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38339,"kind":"person","name":"Stein Sylvia Ann","position":1,"cik":"0001729007","reported_name":"Stein Sylvia Ann","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:25:58.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":true,"shares":8953,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."}],"balance_after":18854,"source":{"system":"sec-edgar","filing":"0001437749-26-020571","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020571/rdgdoc.xml","form_type":"4"}},{"id":738417,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38338,"kind":"person","name":"Snowdon Clive","position":1,"cik":"0001761482","reported_name":"Snowdon Clive","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:24:57.000Z","date":"2026-06-11","kind":"grant","planned":false,"acquired":true,"shares":5825,"ownership":{"direct":false,"nature":"By Spouse"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."}],"balance_after":5825,"derivative":{"underlying":"Ordinary Shares","underlying_shares":5825},"source":{"system":"sec-edgar","filing":"0001437749-26-020569","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020569/rdgdoc.xml","form_type":"4"}},{"id":738416,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38338,"kind":"person","name":"Snowdon Clive","position":1,"cik":"0001761482","reported_name":"Snowdon Clive","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:24:57.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":false,"shares":8953,"ownership":{"direct":false,"nature":"By Spouse"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"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."}],"balance_after":0,"derivative":{"underlying":"Ordinary Shares","underlying_shares":8953},"source":{"system":"sec-edgar","filing":"0001437749-26-020569","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020569/rdgdoc.xml","form_type":"4"}},{"id":738415,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38338,"kind":"person","name":"Snowdon Clive","position":1,"cik":"0001761482","reported_name":"Snowdon Clive","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:24:57.000Z","date":"2026-06-11","kind":"sale","planned":false,"acquired":false,"shares":4015,"price":15.05,"value":60425.75,"ownership":{"direct":false,"nature":"By Spouse"},"balance_after":26841,"source":{"system":"sec-edgar","filing":"0001437749-26-020569","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020569/rdgdoc.xml","form_type":"4"}},{"id":738414,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38338,"kind":"person","name":"Snowdon Clive","position":1,"cik":"0001761482","reported_name":"Snowdon Clive","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:24:57.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":true,"shares":8953,"ownership":{"direct":false,"nature":"By Spouse"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."}],"balance_after":30856,"source":{"system":"sec-edgar","filing":"0001437749-26-020569","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020569/rdgdoc.xml","form_type":"4"}},{"id":738413,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38337,"kind":"person","name":"MULLEN PATRICK K","position":1,"cik":"0001570169","reported_name":"MULLEN PATRICK K","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:23:59.000Z","date":"2026-06-11","kind":"grant","planned":false,"acquired":true,"shares":7709,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."}],"balance_after":7709,"derivative":{"underlying":"Ordinary Shares","underlying_shares":7709},"source":{"system":"sec-edgar","filing":"0001437749-26-020567","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020567/rdgdoc.xml","form_type":"4"}},{"id":738412,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38337,"kind":"person","name":"MULLEN PATRICK K","position":1,"cik":"0001570169","reported_name":"MULLEN PATRICK K","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-06-15T11:23:59.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":false,"shares":11851,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Restricted Stock Units fully vested on June 11, 2026. The above figure includes 440 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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Restricted Stock Units fully vested on June 11, 2026. The above figure includes 440 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."}],"balance_after":0,"derivative":{"underlying":"Ordinary Shares","underlying_shares":11851},"source":{"system":"sec-edgar","filing":"0001437749-26-020567","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020567/rdgdoc.xml","form_type":"4"}},{"id":738411,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38337,"kind":"person","name":"MULLEN PATRICK K","position":1,"cik":"0001570169","reported_name":"MULLEN PATRICK K","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:23:59.000Z","date":"2026-06-11","kind":"sale","planned":false,"acquired":false,"shares":5323,"price":15.05,"value":80111.15,"ownership":{"direct":true},"balance_after":42145,"source":{"system":"sec-edgar","filing":"0001437749-26-020567","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020567/rdgdoc.xml","form_type":"4"}},{"id":738410,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38337,"kind":"person","name":"MULLEN PATRICK K","position":1,"cik":"0001570169","reported_name":"MULLEN PATRICK K","relationship":{"director":true}}],"security":"Ordinary Shares","published_at":"2026-06-15T11:23:59.000Z","date":"2026-06-11","kind":"exercise","planned":false,"acquired":true,"shares":11851,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert to Ordinary Shares on a 1 for 1 basis."}],"balance_after":47468,"source":{"system":"sec-edgar","filing":"0001437749-26-020567","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926020567/rdgdoc.xml","form_type":"4"}},{"id":760688,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-05-28T12:21:13.000Z","date":"2026-05-06","kind":"other","planned":false,"acquired":true,"shares":853,"price":15.82,"value":13494.46,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Purchases made pursuant to an automatic dividend reinvestment program with the executive's broker."}],"balance_after":267872,"source":{"system":"sec-edgar","filing":"0001437749-26-018673","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926018673/rdgdoc.xml","form_type":"4"}},{"id":760687,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-05-28T12:21:13.000Z","date":"2026-02-04","kind":"other","planned":false,"acquired":true,"shares":853,"price":15.68,"value":13375.04,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Purchases made pursuant to an automatic dividend reinvestment program with the executive's broker."}],"balance_after":267019,"source":{"system":"sec-edgar","filing":"0001437749-26-018673","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926018673/rdgdoc.xml","form_type":"4"}},{"id":760686,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-05-28T12:21:13.000Z","date":"2025-12-19","kind":"other","planned":false,"acquired":true,"shares":508,"price":13.79,"value":7005.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Purchases made pursuant to the Company's Employee Stock Purchase Plan"}],"balance_after":266166,"source":{"system":"sec-edgar","filing":"0001437749-26-018673","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926018673/rdgdoc.xml","form_type":"4"}},{"id":760685,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-05-28T12:21:13.000Z","date":"2025-11-05","kind":"other","planned":false,"acquired":true,"shares":1068,"price":12.39,"value":13232.52,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Purchases made pursuant to an automatic dividend reinvestment program with the executive's broker."}],"balance_after":265658,"source":{"system":"sec-edgar","filing":"0001437749-26-018673","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000143774926018673/rdgdoc.xml","form_type":"4"}},{"id":831457,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56672,"kind":"person","name":"LAWDAY MARK JAMES","position":1,"cik":"0001964245","reported_name":"LAWDAY MARK JAMES","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-23T15:58:03.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":882,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the grant of performance-based Options (at 50% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the grant of performance-based Options (at 50% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":882,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":882},"source":{"system":"sec-edgar","filing":"0001096056-26-000058","document":"wk-form4_1774281479.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000058/wk-form4_1774281479.xml","form_type":"4"}},{"id":831456,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56672,"kind":"person","name":"LAWDAY MARK JAMES","position":1,"cik":"0001964245","reported_name":"LAWDAY MARK JAMES","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-23T15:58:03.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":1376,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents the grant of performance-based Options (at 117% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents the grant of performance-based Options (at 117% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":1376,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":1376},"source":{"system":"sec-edgar","filing":"0001096056-26-000058","document":"wk-form4_1774281479.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000058/wk-form4_1774281479.xml","form_type":"4"}},{"id":831455,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38979,"kind":"person","name":"Wardlow Graham","position":1,"cik":"0001761477","reported_name":"Wardlow Graham","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-23T15:57:32.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":2070,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the grant of performance-based Options (at 50% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the grant of performance-based Options (at 50% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":2070,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":2070},"source":{"system":"sec-edgar","filing":"0001096056-26-000056","document":"wk-form4_1774281449.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000056/wk-form4_1774281449.xml","form_type":"4"}},{"id":831454,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38979,"kind":"person","name":"Wardlow Graham","position":1,"cik":"0001761477","reported_name":"Wardlow Graham","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-23T15:57:32.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":3229,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents the grant of performance-based Options (at 117% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents the grant of performance-based Options (at 117% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":3229,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":3229},"source":{"system":"sec-edgar","filing":"0001096056-26-000056","document":"wk-form4_1774281449.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000056/wk-form4_1774281449.xml","form_type":"4"}},{"id":831453,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56671,"kind":"person","name":"Webster Stephen","position":1,"cik":"0001760464","reported_name":"Webster Stephen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-23T15:56:55.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":1926,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the grant of performance-based Options (at 50% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the grant of performance-based Options (at 50% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":1926,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":1926},"source":{"system":"sec-edgar","filing":"0001096056-26-000054","document":"wk-form4_1774281412.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000054/wk-form4_1774281412.xml","form_type":"4"}},{"id":831452,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56671,"kind":"person","name":"Webster Stephen","position":1,"cik":"0001760464","reported_name":"Webster Stephen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-23T15:56:55.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":3005,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents the grant of performance-based Options (at 117% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents the grant of performance-based Options (at 117% target) awarded on March 20, 2023. 100% of the performance-based Options were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":3005,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":3005},"source":{"system":"sec-edgar","filing":"0001096056-26-000054","document":"wk-form4_1774281412.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000054/wk-form4_1774281412.xml","form_type":"4"}},{"id":831440,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":false,"shares":990,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":0,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":990},"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831439,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":990,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the grant of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the grant of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":990,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":990},"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831438,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":false,"shares":1544,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025"}],"balance_after":0,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":1544},"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831437,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":1544,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":1544,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":1544},"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831436,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":false,"shares":623,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Relates to 25% vesting of the Restricted Stock Units granted on Mach 20, 2023, the final 25% will vest March 20, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Relates to 25% vesting of the Restricted Stock Units granted on Mach 20, 2023, the final 25% will vest March 20, 2027."}],"balance_after":628,"derivative":{"underlying":"Ordinary Shares","underlying_shares":623},"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831435,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"tax_withholding","planned":true,"acquired":false,"shares":401,"price":11.92,"value":4779.92,"ownership":{"direct":true},"balance_after":20759,"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831434,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":true,"shares":990,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":21160,"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831433,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"tax_withholding","planned":true,"acquired":false,"shares":626,"price":11.82,"value":7399.32,"ownership":{"direct":true},"balance_after":20170,"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831432,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":true,"shares":1544,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":20796,"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831431,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"tax_withholding","planned":true,"acquired":false,"shares":253,"price":11.82,"value":2990.46,"ownership":{"direct":true},"balance_after":19252,"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831430,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:58.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":true,"shares":623,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":19505,"source":{"system":"sec-edgar","filing":"0001096056-26-000052","document":"wk-form4_1774281354.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000052/wk-form4_1774281354.xml","form_type":"4"}},{"id":831451,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":false,"shares":1026,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":0,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":1026},"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831450,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":1026,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the grant of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the grant of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":1026,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":1026},"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831449,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":false,"shares":1601,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025"}],"balance_after":0,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":1601},"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831448,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":1601,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":1601,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":1601},"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831447,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":false,"shares":644,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Relates to 25% vesting of the Restricted Stock Units granted on Mach 20, 2023, the final 25% will vest March 20, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Relates to 25% vesting of the Restricted Stock Units granted on Mach 20, 2023, the final 25% will vest March 20, 2027."}],"balance_after":653,"derivative":{"underlying":"Ordinary Shares","underlying_shares":644},"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831446,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"tax_withholding","planned":true,"acquired":false,"shares":444,"price":11.82,"value":5248.08,"ownership":{"direct":true},"balance_after":20165,"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831445,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":true,"shares":1026,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":20609,"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831444,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"tax_withholding","planned":true,"acquired":false,"shares":693,"price":11.82,"value":8191.26,"ownership":{"direct":true},"balance_after":19583,"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831443,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":true,"shares":1601,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":20276,"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831442,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"tax_withholding","planned":true,"acquired":false,"shares":279,"price":11.82,"value":3297.78,"ownership":{"direct":true},"balance_after":18675,"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831441,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:55:11.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":true,"shares":644,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":18954,"source":{"system":"sec-edgar","filing":"0001096056-26-000050","document":"wk-form4_1774281308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000050/wk-form4_1774281308.xml","form_type":"4"}},{"id":831429,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":false,"shares":13104,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":0,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":13104},"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831428,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":13104,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the grant of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period\nended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the grant of performance-based Restricted Stock Units (at 50% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period\nended December 31, 2025."}],"balance_after":13104,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":13104},"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831427,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":false,"shares":20442,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025"}],"balance_after":0,"derivative":{"underlying":"Ordinary Shares","underlying_shares":20442},"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831426,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"grant","planned":true,"acquired":true,"shares":20442,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 117% target) awarded on March 20, 2023. 100% of the performance-based Restricted Stock Units were granted and vested on March 20, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":20442,"derivative":{"exercise_date":"2026-03-20","underlying":"Ordinary Shares","underlying_shares":20442},"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831425,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":false,"shares":8290,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Relates to 25% vesting of the Restricted Stock Units granted on Mach 20, 2023, the final 25% will vest March 20, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Relates to 25% vesting of the Restricted Stock Units granted on Mach 20, 2023, the final 25% will vest March 20, 2027."}],"balance_after":8297,"derivative":{"underlying":"Ordinary Shares","underlying_shares":8290},"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831424,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"tax_withholding","planned":true,"acquired":false,"shares":7347,"price":11.82,"value":86841.54,"ownership":{"direct":true},"balance_after":264590,"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831423,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":true,"shares":13104,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":271937,"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831422,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"tax_withholding","planned":true,"acquired":false,"shares":11460,"price":11.82,"value":135457.2,"ownership":{"direct":true},"balance_after":258833,"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831421,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":true,"shares":20442,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":270293,"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831420,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"tax_withholding","planned":true,"acquired":false,"shares":4648,"price":11.82,"value":54939.36,"ownership":{"direct":true},"balance_after":249851,"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":831419,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":43620,"kind":"person","name":"Butcher Andrew","position":1,"cik":"0001761420","reported_name":"Butcher Andrew","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Ordinary Shares","published_at":"2026-03-23T15:53:38.000Z","date":"2026-03-20","kind":"exercise","planned":true,"acquired":true,"shares":8290,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":254499,"source":{"system":"sec-edgar","filing":"0001096056-26-000048","document":"wk-form4_1774281215.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000048/wk-form4_1774281215.xml","form_type":"4"}},{"id":834000,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":57238,"kind":"person","name":"Ramos Vittini Janelle Amanda","position":1,"cik":"0002108533","reported_name":"Ramos Vittini Janelle Amanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:44:11.000Z","date":"2026-03-17","kind":"exercise","planned":true,"acquired":false,"shares":780,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents 25% of the Restricted Stock Units granted on March 17, 2025. The remaining Restricted Stock Units will vest in three equal tranches on March 17, 2027, 2028 and 2029."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents 25% of the Restricted Stock Units granted on March 17, 2025. The remaining Restricted Stock Units will vest in three equal tranches on March 17, 2027, 2028 and 2029."}],"balance_after":2344,"derivative":{"underlying":"Ordinary Shares","underlying_shares":780},"source":{"system":"sec-edgar","filing":"0001096056-26-000046","document":"wk-form4_1773927846.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000046/wk-form4_1773927846.xml","form_type":"4"}},{"id":833999,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":57238,"kind":"person","name":"Ramos Vittini Janelle Amanda","position":1,"cik":"0002108533","reported_name":"Ramos Vittini Janelle Amanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:44:11.000Z","date":"2026-03-17","kind":"tax_withholding","planned":true,"acquired":false,"shares":488,"price":11.8,"value":5758.4,"ownership":{"direct":true},"balance_after":292,"source":{"system":"sec-edgar","filing":"0001096056-26-000046","document":"wk-form4_1773927846.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000046/wk-form4_1773927846.xml","form_type":"4"}},{"id":833998,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":57238,"kind":"person","name":"Ramos Vittini Janelle Amanda","position":1,"cik":"0002108533","reported_name":"Ramos Vittini Janelle Amanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:44:11.000Z","date":"2026-03-17","kind":"exercise","planned":true,"acquired":true,"shares":780,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":780,"source":{"system":"sec-edgar","filing":"0001096056-26-000046","document":"wk-form4_1773927846.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000046/wk-form4_1773927846.xml","form_type":"4"}},{"id":833997,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":false,"shares":5738,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"Represents the 100% exercise of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"Represents the 100% exercise of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":0,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":5738},"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833996,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"grant","planned":true,"acquired":true,"shares":5738,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":5738,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":5738},"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833995,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":false,"shares":6763,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":0,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":6763},"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833994,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"grant","planned":true,"acquired":true,"shares":6763,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the grant of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the grant of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":6763,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":6763},"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833993,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":false,"shares":921,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents 25% of the Restricted Stock Units granted on March 18, 2024. The remaining Restricted Stock Units will vest in two equal tranches on March 18, 2027 and 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents 25% of the Restricted Stock Units granted on March 18, 2024. The remaining Restricted Stock Units will vest in two equal tranches on March 18, 2027 and 2028."}],"balance_after":1848,"derivative":{"underlying":"Ordinary Shares","underlying_shares":921},"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833992,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-17","kind":"exercise","planned":true,"acquired":false,"shares":769,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents 25% of the Restricted Stock Units granted on March 17, 2025. The remaining Restricted Stock Units will vest in three equal tranches on March 17, 2027, 2028 and 2029."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents 25% of the Restricted Stock Units granted on March 17, 2025. The remaining Restricted Stock Units will vest in three equal tranches on March 17, 2027, 2028 and 2029."}],"balance_after":2313,"derivative":{"underlying":"Ordinary Shares","underlying_shares":769},"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833991,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"tax_withholding","planned":true,"acquired":false,"shares":2324,"price":11.82,"value":27469.68,"ownership":{"direct":true},"balance_after":18882,"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833990,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":true,"shares":5738,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":21206,"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833989,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"tax_withholding","planned":true,"acquired":false,"shares":2739,"price":11.82,"value":32374.98,"ownership":{"direct":true},"balance_after":15468,"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833988,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":true,"shares":6763,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":18207,"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833987,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"tax_withholding","planned":true,"acquired":false,"shares":373,"price":11.82,"value":4408.86,"ownership":{"direct":true},"balance_after":11444,"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833986,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":true,"shares":921,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":11817,"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833985,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-17","kind":"tax_withholding","planned":true,"acquired":false,"shares":312,"price":11.8,"value":3681.6,"ownership":{"direct":true},"balance_after":10896,"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833984,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56669,"kind":"person","name":"Moorefield Jeffrey C.","position":1,"cik":"0001640363","reported_name":"Moorefield Jeffrey C.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:43:33.000Z","date":"2026-03-17","kind":"exercise","planned":true,"acquired":true,"shares":769,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":11208,"source":{"system":"sec-edgar","filing":"0001096056-26-000044","document":"wk-form4_1773927809.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000044/wk-form4_1773927809.xml","form_type":"4"}},{"id":833983,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":false,"shares":5940,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"Represents the 100% exercise of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"Represents the 100% exercise of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":0,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":5940},"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833982,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"grant","planned":true,"acquired":true,"shares":5940,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":5940,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":5940},"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833981,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":false,"shares":7001,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the 100% vesting of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":0,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":7001},"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833980,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"grant","planned":true,"acquired":true,"shares":7001,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the grant of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the grant of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":7001,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":7001},"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833979,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":false,"shares":954,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents 25% of the Restricted Stock Units granted on March 18, 2024. The remaining Restricted Stock Units will vest in two equal tranches on March 18, 2027 and 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents 25% of the Restricted Stock Units granted on March 18, 2024. The remaining Restricted Stock Units will vest in two equal tranches on March 18, 2027 and 2028."}],"balance_after":1912,"derivative":{"underlying":"Ordinary Shares","underlying_shares":954},"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833978,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-17","kind":"exercise","planned":true,"acquired":false,"shares":800,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents 25% of the Restricted Stock Units granted on March 17, 2025. The remaining Restricted Stock Units will vest in three equal tranches on March 17, 2027, 2028 and 2029."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents 25% of the Restricted Stock Units granted on March 17, 2025. The remaining Restricted Stock Units will vest in three equal tranches on March 17, 2027, 2028 and 2029."}],"balance_after":2408,"derivative":{"underlying":"Ordinary Shares","underlying_shares":800},"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833977,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"tax_withholding","planned":true,"acquired":false,"shares":2569,"price":11.82,"value":30365.58,"ownership":{"direct":true},"balance_after":18310,"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833976,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":true,"shares":5940,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":20879,"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833975,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"tax_withholding","planned":true,"acquired":false,"shares":3028,"price":11.82,"value":35790.96,"ownership":{"direct":true},"balance_after":14939,"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833974,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":true,"shares":7001,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":17967,"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833973,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"tax_withholding","planned":true,"acquired":false,"shares":413,"price":11.82,"value":4881.66,"ownership":{"direct":true},"balance_after":10966,"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833972,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-18","kind":"exercise","planned":true,"acquired":true,"shares":954,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":11379,"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833971,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-17","kind":"tax_withholding","planned":true,"acquired":false,"shares":347,"price":11.8,"value":4094.6,"ownership":{"direct":true},"balance_after":10425,"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833970,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56670,"kind":"person","name":"MEAD HOWARD IOAN","position":1,"cik":"0001964326","reported_name":"MEAD HOWARD IOAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-03-19T13:42:47.000Z","date":"2026-03-17","kind":"exercise","planned":true,"acquired":true,"shares":800,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."}],"balance_after":10772,"source":{"system":"sec-edgar","filing":"0001096056-26-000042","document":"wk-form4_1773927763.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000042/wk-form4_1773927763.xml","form_type":"4"}},{"id":833969,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56672,"kind":"person","name":"LAWDAY MARK JAMES","position":1,"cik":"0001964245","reported_name":"LAWDAY MARK JAMES","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-19T13:41:48.000Z","date":"2026-03-18","kind":"grant","planned":true,"acquired":true,"shares":5265,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":5265,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":5265},"source":{"system":"sec-edgar","filing":"0001096056-26-000040","document":"wk-form4_1773927705.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000040/wk-form4_1773927705.xml","form_type":"4"}},{"id":833968,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56672,"kind":"person","name":"LAWDAY MARK JAMES","position":1,"cik":"0001964245","reported_name":"LAWDAY MARK JAMES","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-19T13:41:48.000Z","date":"2026-03-18","kind":"grant","planned":true,"acquired":true,"shares":6206,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents the grant of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents the grant of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":6206,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":6206},"source":{"system":"sec-edgar","filing":"0001096056-26-000040","document":"wk-form4_1773927705.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000040/wk-form4_1773927705.xml","form_type":"4"}},{"id":833967,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38979,"kind":"person","name":"Wardlow Graham","position":1,"cik":"0001761477","reported_name":"Wardlow Graham","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-03-19T13:41:08.000Z","date":"2026-03-18","kind":"grant","planned":true,"acquired":true,"shares":12218,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":12218,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":12218},"source":{"system":"sec-edgar","filing":"0001096056-26-000038","document":"wk-form4_1773927665.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000038/wk-form4_1773927665.xml","form_type":"4"}},{"id":833966,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":38979,"kind":"person","name":"Wardlow Graham","position":1,"cik":"0001761477","reported_name":"Wardlow Graham","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-03-19T13:41:08.000Z","date":"2026-03-18","kind":"grant","planned":true,"acquired":true,"shares":14400,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents the grant of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents the grant of performance-based Restricted Stock Units (at 221% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of EPS growth goals for the performance period ended December 31, 2025."}],"balance_after":14400,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":14400},"source":{"system":"sec-edgar","filing":"0001096056-26-000038","document":"wk-form4_1773927665.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000038/wk-form4_1773927665.xml","form_type":"4"}},{"id":833965,"issuer":{"id":5529,"kind":"organization","name":"LUXFER HOLDINGS PLC"},"owners":[{"id":56671,"kind":"person","name":"Webster Stephen","position":1,"cik":"0001760464","reported_name":"Webster Stephen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-03-19T13:40:25.000Z","date":"2026-03-18","kind":"grant","planned":true,"acquired":true,"shares":12083,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1 for 1, subject to a nominal payment of $1.00 per Ordinary Share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the grant of performance-based Restricted Stock Units (at 125% target) awarded on March 18, 2024. 100% of the performance-based Restricted Stock Units were granted and vested on March 18, 2026 upon the achievement of relative total shareholder return (TSR) goals for the performance period ended December 31, 2025."}],"balance_after":12083,"derivative":{"exercise_date":"2026-03-18","underlying":"Ordinary Shares","underlying_shares":12083},"source":{"system":"sec-edgar","filing":"0001096056-26-000036","document":"wk-form4_1773927622.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1096056/000109605626000036/wk-form4_1773927622.xml","form_type":"4"}}],"next_cursor":"2026-03-19T13:40:25.000000Z,833965"}