WEBSTER STEPHEN (Group Financial Controller) sold 13.7% of their position (4.24K shares) of LUXFER HOLDINGS PLC on the open market

Open‑market sale worth $50.2K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

WEBSTER STEPHEN

Filed: 6/11/2025ACC: 0001760464-25-000006

InsiderWEBSTER STEPHENCIK 1760464

→

IssuerLUXFER HOLDINGS PLCCIK 1096056

Officer· Group Financial Controller

Since Jan 2019

-4.24K

Net shares

Net seller

$50.2K

Total sold

Open market trades

0B · 1S

Total transactions

8.28K acquired · 12.53K disposed

Non-Derivative Transactions11

Ordinary Shares

Direct

M · Option Exercise

+800.00

Price / share

—

Trade value

—

% of position

3.5%

6/9/2025

22.62K→23.42K

Ordinary Shares

Direct

M · Option Exercise

+128.00

Price / share

—

Trade value

—

% of position

0.5%

6/9/2025

23.42K→23.55K

Ordinary Shares

Direct

M · Option Exercise

+1K

Price / share

—

Trade value

—

% of position

4.2%

6/9/2025

23.55K→24.55K

Ordinary Shares

Direct

M · Option Exercise

+125.00

Price / share

—

Trade value

—

% of position

0.5%

6/9/2025

24.55K→24.68K

Ordinary Shares

Direct

M · Option Exercise

+2.30K

Price / share

—

Trade value

—

% of position

9.3%

6/9/2025

24.68K→26.98K

Ordinary Shares

Direct

M · Option Exercise

+900.00

Price / share

—

Trade value

—

% of position

3.3%

6/9/2025

26.98K→27.88K

Ordinary Shares

Direct

M · Option Exercise

+1.07K

Price / share

—

Trade value

—

% of position

3.8%

6/9/2025

27.88K→28.95K

Ordinary Shares

Direct

M · Option Exercise

+92.00

Price / share

—

Trade value

—

% of position

0.3%

6/9/2025

28.95K→29.04K

Ordinary Shares

Direct

M · Option Exercise

+1.79K

Price / share

—

Trade value

—

% of position

6.2%

6/9/2025

29.04K→30.83K

Ordinary Shares

Direct

M · Option Exercise

+75.00

Price / share

—

Trade value

—

% of position

0.2%

6/9/2025

30.83K→30.91K

Ordinary Shares

Direct

S · Sale

−4.24K

Price / share

$11.83

Trade value

$50.21K

% of position

13.7%

6/9/2025

30.91K→26.66K

Total

Net shares

+4.04K

Net value

-$50.21K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+800.00	—	—	3.5%	22.62K	23.42K
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+128.00	—	—	0.5%	23.42K	23.55K
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+1K	—	—	4.2%	23.55K	24.55K
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+125.00	—	—	0.5%	24.55K	24.68K
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+2.30K	—	—	9.3%	24.68K	26.98K
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+900.00	—	—	3.3%	26.98K	27.88K
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+1.07K	—	—	3.8%	27.88K	28.95K
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+92.00	—	—	0.3%	28.95K	29.04K
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+1.79K	—	—	6.2%	29.04K	30.83K
Ordinary Shares Direct	6/9/2025	M · Option Exercise	+75.00	—	—	0.2%	30.83K	30.91K
Ordinary Shares Direct	6/9/2025	S · Sale	−4.24K	$11.83	$50.21K	13.7%	30.91K	26.66K
Total			+4.04K		-$50.21K

Derivative Transactions10

Stock Options (Right to Buy)

Direct

M · Option Exercise

Converts to

Ordinary Shares

800.00 shares

−800.00

Strike price

Held after

0.00

Exercisable

—

6/9/2025

Dividend Equivalent Rights

Direct

M · Option Exercise

Converts to

Ordinary Shares

128.00 shares

−128.00

Strike price

Held after

0.00

Exercisable

—

6/9/2025

Stock Options (Right to Buy)

Direct

M · Option Exercise

Converts to

Ordinary Shares

1K shares

−1K

Strike price

Held after

Exercisable

—

6/9/2025

Dividend Equivalent Rights

Direct

M · Option Exercise

Converts to

Ordinary Shares

125.00 shares

−125.00

Strike price

Held after

144.00

Exercisable

—

6/9/2025

Stock Options (Right to Buy)

Direct

M · Option Exercise

Converts to

Ordinary Shares

2.30K shares

−2.30K

Strike price

Held after

0.00

Exercisable

—

6/9/2025

Stock Options (Right to Buy)

Direct

M · Option Exercise

Converts to

Ordinary Shares

900.00 shares

−900.00

Strike price

Held after

0.00

Exercisable

—

6/9/2025

Stock Options (Right to Buy)

Direct

M · Option Exercise

Converts to

Ordinary Shares

1.07K shares

−1.07K

Strike price

Held after

2.14K

Exercisable

—

6/9/2025

Dividend Equivalent Rights

Direct

M · Option Exercise

Converts to

Ordinary Shares

92.00 shares

−92.00

Strike price

Held after

236.00

Exercisable

—

6/9/2025

Stock Options (Right to Buy)

Direct

M · Option Exercise

Converts to

Ordinary Shares

1.79K shares

−1.79K

Strike price

Held after

5.37K

Exercisable

—

6/9/2025

Dividend Equivalent Rights

Direct

M · Option Exercise

Converts to

Ordinary Shares

75.00 shares

−75.00

Strike price

Held after

230.00

Exercisable

—

6/9/2025

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Stock Options (Right to Buy) Direct	Ordinary Shares800.00 shares	6/9/2025	M · Option Exercise	−800.00	—	0.00
Dividend Equivalent Rights Direct	Ordinary Shares128.00 shares	6/9/2025	M · Option Exercise	−128.00	—	0.00
Stock Options (Right to Buy) Direct	Ordinary Shares1K shares	6/9/2025	M · Option Exercise	−1K	—	1K
Dividend Equivalent Rights Direct	Ordinary Shares125.00 shares	6/9/2025	M · Option Exercise	−125.00	—	144.00
Stock Options (Right to Buy) Direct	Ordinary Shares2.30K shares	6/9/2025	M · Option Exercise	−2.30K	—	0.00
Stock Options (Right to Buy) Direct	Ordinary Shares900.00 shares	6/9/2025	M · Option Exercise	−900.00	—	0.00
Stock Options (Right to Buy) Direct	Ordinary Shares1.07K shares	6/9/2025	M · Option Exercise	−1.07K	—	2.14K
Dividend Equivalent Rights Direct	Ordinary Shares92.00 shares	6/9/2025	M · Option Exercise	−92.00	—	236.00
Stock Options (Right to Buy) Direct	Ordinary Shares1.79K shares	6/9/2025	M · Option Exercise	−1.79K	—	5.37K
Dividend Equivalent Rights Direct	Ordinary Shares75.00 shares	6/9/2025	M · Option Exercise	−75.00	—	230.00