[Form 4] LUXFER HOLDINGS PLC Insider Trading Activity

Rhea-AI Filing Summary

Luxfer Holdings CEO Andrew Butcher reported compensation-related equity activity involving restricted stock units (RSUs) and ordinary shares. On March 20, 2026, he received and vested several RSU awards that convert 1-for-1 into ordinary shares, subject to a nominal payment of $1.00 per share, including performance-based RSUs tied to EPS growth and relative total shareholder return goals for a period ending December 31, 2025.

He exercised derivative awards into ordinary shares and had 23,455 ordinary shares withheld at $11.82 per share to satisfy tax obligations. After these transactions, he directly owned 264,590 ordinary shares. The filing shows no open‑market purchases or sales, only grants, vesting, exercises, and tax-withholding dispositions.

Insider Trade Summary 10b5-1

41,836 shares exercised/converted

Mixed 11 txns

Insider Butcher Andrew

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	8,290	$0.00	--
Grant/Award	Restricted Stock Units	20,442	$0.00	--
Exercise	Restricted Stock Units	20,442	$0.00	--
Grant/Award	Restricted Stock Units	13,104	$0.00	--
Exercise	Restricted Stock Units	13,104	$0.00	--
Exercise	Ordinary Shares	8,290	$0.00	--
Tax Withholding	Ordinary Shares	4,648	$11.82	$55K
Exercise	Ordinary Shares	20,442	$0.00	--
Tax Withholding	Ordinary Shares	11,460	$11.82	$135K
Exercise	Ordinary Shares	13,104	$0.00	--
Tax Withholding	Ordinary Shares	7,347	$11.82	$87K

Holdings After Transaction: Restricted Stock Units — 8,297 shares (Direct); Ordinary Shares — 254,499 shares (Direct)

Footnotes (1)

1. Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share. Relates to 25% vesting of the Restricted Stock Units granted on Mach 20, 2023, the final 25% will vest March 20, 2027. 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. 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 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. 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.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Butcher Andrew

(Last) (First) (Middle)

LUXFER HOLDINGS PLC

LUMNS LANE

(Street)

MANCHESTER M27 8LN

(City) (State) (Zip)

UNITED KINGDOM

(Country)

2. Issuer Name and Ticker or Trading Symbol
LUXFER HOLDINGS PLC [ LXFR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	03/20/2026		M		8,290	A	(1)	254,499	D
Ordinary Shares	03/20/2026		F		4,648	D	$11.82	249,851	D
Ordinary Shares	03/20/2026		M		20,442	A	(1)	270,293	D
Ordinary Shares	03/20/2026		F		11,460	D	$11.82	258,833	D
Ordinary Shares	03/20/2026		M		13,104	A	(1)	271,937	D
Ordinary Shares	03/20/2026		F		7,347	D	$11.82	264,590	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	03/20/2026		M			8,290	(2)	(2)	Ordinary Shares	8,290	(1)	8,297	D
Restricted Stock Units	(1)	03/20/2026		A		20,442		03/20/2026(3)	(3)	Ordinary Shares	20,442	(1)	20,442	D
Restricted Stock Units	(1)	03/20/2026		M			20,442	(4)	(4)	Ordinary Shares	20,442	(1)	0	D
Restricted Stock Units	(1)	03/20/2026		A		13,104		03/20/2026(5)	(5)	Ordinary Shares	13,104	(1)	13,104	D
Restricted Stock Units	(1)	03/20/2026		M			13,104	03/20/2026(6)	(6)	Ordinary Shares	13,104	(1)	0	D

Explanation of Responses:

1. Restricted Stock Units convert 1 for 1, subject to a nominal payment of $1.00 per Ordinary Share.

2. Relates to 25% vesting of the Restricted Stock Units granted on Mach 20, 2023, the final 25% will vest March 20, 2027.

3. 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.

4. 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

5. 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.

6. 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.

Remarks:

	/s/ Benjamin Coulson under Power of Attorney for Andrew Butcher	03/21/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Luxfer (LXFR) CEO Andrew Butcher report?

Andrew Butcher reported RSU grants, vesting, and exercises into ordinary shares, plus tax-withholding dispositions. The activity reflects equity compensation events rather than open-market trading, with RSUs converting 1-for-1 into ordinary shares subject to a nominal $1.00 per-share payment.

How many Luxfer (LXFR) ordinary shares does the CEO hold after these transactions?

Following the March 20, 2026 transactions, Andrew Butcher directly owned 264,590 Luxfer ordinary shares. This figure reflects RSU conversions into shares and shares withheld to cover tax obligations, as disclosed in the non-derivative transaction totals in the filing.

Were any of the Luxfer (LXFR) CEO’s transactions open-market stock sales or purchases?

The transactions did not include open-market buys or sells. They involved RSU grants, vesting, and exercises, plus shares delivered to cover taxes at $11.82 per share. These are compensation and tax-related events rather than discretionary market trades.

What performance goals triggered the Luxfer (LXFR) CEO’s performance-based RSU vesting?

Performance-based RSUs vested upon achieving EPS growth goals and relative total shareholder return (TSR) goals for a performance period ending December 31, 2025. Footnotes state that 100% of these performance-based RSUs were granted and vested on March 20, 2026 when those targets were met.

How many Luxfer (LXFR) shares were withheld for the CEO’s tax obligations?

The filing shows 23,455 ordinary shares withheld to satisfy tax obligations, in three F-code transactions at $11.82 per share. These tax-withholding dispositions reduce net shares received but do not represent open-market stock sales by the CEO.

How do Andrew Butcher’s RSUs convert into Luxfer (LXFR) ordinary shares?

Footnotes explain that each restricted stock unit converts into one Luxfer ordinary share, subject to a nominal payment of $1.00 per ordinary share. This 1-for-1 conversion applies upon vesting, turning RSU awards into directly held ordinary shares.