Director/PDMR Shareholding

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Liam Condon

2

Reason for the notification

a)

Position/status

Chief Executive Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Share award under the Johnson Matthey 2026-2029 Performance Share Plan. The award is subject to performance conditions over a three year period. Subject to performance conditions being met, shares will vest on the third anniversary of the date of the award.

c)

Price(s) and volume(s)

The reference share price is £21.0167 which is calculated using the average of the daily closing mid-market price on each dealing day over the four week period starting 28 May 2026 and ending 25 June 2026.

Price(s)

Volume(s)

£21.0167

125,950

d)

Aggregated information

- Aggregated volume

- Price

125,950

£21.0167

e)

Date of the transaction

3 August 2026

f)

Place of the transaction

Outside a trading venue

5

The awards are subject to the following performance conditions over the three-year performance period:

Measure

Weighting

Maximum

b)

Earnings per Share (EPS)

40%

Annualised EPS growth of 1% per annum will result in 15% vesting (threshold), increasing on a straight-line basis to 7% per annum for 100% vesting (maximum). In line with the Company's historical approach, earnings will be assessed 50% against actual metal prices and 50% against constant metal prices.

c)

Return on Capital Employed (ROCE)

40%

ROCE will be measured based on performance for the financial year ending 31 March 2029. Threshold vesting (25%) requires 15% ROCE, increasing on a straight-line basis to 20% ROCE for 100% vesting.

d)

Sustainability measures

20%

The sustainability element comprises three equally weighted strategic objectives. Details of the measures are set out below. Threshold vesting is 25%, increasing on a straight-line basis to 100% at maximum.

5.1

Sustainability Measures

Strategic objective

Weighting(of overall award)

Threshold

Maximum

a)

Safety - reduction in TRIIR and ICCA (measured by FY29 outcomes)

6.7%

TRIIR: 0.35

ICCA: 0.5

TRIIR: 0.25

ICCA: 0.4

b)

Reduction in Scope 1 and 2 GHG emissions (from FY20 baseline)

6.7%

62%

65%

c)

Female representation across management levels (Global Grade 12 and above)

6.7%

34%

38%

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Alastair Judge

2

Reason for the notification

a)

Position/status

Chief Financial Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Share award under the Johnson Matthey 2026-2029 Performance Share Plan. The award is subject to performance conditions over a three year period. Subject to performance conditions being met, shares will vest on the third anniversary of the date of the award.

c)

Price(s) and volume(s)

The reference share price is £21.0167 which is calculated using the average of the daily closing mid-market price on each dealing day over the four week period starting 28 May 2026 and ending 25 June 2026.

Price(s)

Volume(s)

£21.0167

47,581

d)

Aggregated information

- Aggregated volume

- Price

47,581

£21.0167

e)

Date of the transaction

3 August 2026

f)

Place of the transaction

Outside a trading venue

5

The awards are subject to the following performance conditions over the three-year performance period:

Measure

Weighting

Maximum

b)

Earnings per Share (EPS)

40%

Annualised EPS growth of 1% per annum will result in 15% vesting (threshold), increasing on a straight-line basis to 7% per annum for 100% vesting (maximum). In line with the Company's historical approach, earnings will be assessed 50% against actual metal prices and 50% against constant metal prices.

c)

Return on Capital Employed (ROCE)

40%

ROCE will be measured based on performance for the financial year ending 31 March 2029. Threshold vesting (25%) requires 15% ROCE, increasing on a straight-line basis to 20% ROCE for 100% vesting.

d)

Sustainability measures

20%

The sustainability element comprises three equally weighted strategic objectives. Details of the measures are set out below. Threshold vesting is 25%, increasing on a straight-line basis to 100% at maximum.

5.1

Sustainability Measures

Strategic objective

Weighting(of overall award)

Threshold

Maximum

a)

Safety - reduction in TRIIR and ICCA (measured by FY29 outcomes)

6.7%

TRIIR: 0.35

ICCA: 0.5

TRIIR: 0.25

ICCA: 0.4

b)

Reduction in Scope 1 and 2 GHG emissions (from FY20 baseline)

6.7%

62%

65%

c)

Female representation across management levels (Global Grade 12 and above)

6.7%

34%

38%

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Richard Pike

2

Reason for the notification

a)

Position/status

Chief Operating Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Share award under the Johnson Matthey 2026-2029 Performance Share Plan. The award is subject to performance conditions over a three year period. Subject to performance conditions being met, shares will vest on the third anniversary of the date of the award.

c)

Price(s) and volume(s)

The reference share price is £21.0167 which is calculated using the average of the daily closing mid-market price on each dealing day over the four week period starting 28 May 2026 and ending 25 June 2026.

Price(s)

Volume(s)

£21.0167

71,371

d)

Aggregated information

- Aggregated volume

- Price

71,371

£21.0167

e)

Date of the transaction

3 August 2026

f)

Place of the transaction

Outside a trading venue

5

The awards are subject to the following performance conditions over the three-year performance period:

Measure

Weighting

Maximum

b)

Earnings per Share (EPS)

40%

Annualised EPS growth of 1% per annum will result in 15% vesting (threshold), increasing on a straight-line basis to 7% per annum for 100% vesting (maximum). In line with the Company's historical approach, earnings will be assessed 50% against actual metal prices and 50% against constant metal prices.

c)

Return on Capital Employed (ROCE)

40%

ROCE will be measured based on performance for the financial year ending 31 March 2029. Threshold vesting (25%) requires 15% ROCE, increasing on a straight-line basis to 20% ROCE for 100% vesting.

d)

Sustainability measures

20%

The sustainability element comprises three equally weighted strategic objectives. Details of the measures are set out below. Threshold vesting is 25%, increasing on a straight-line basis to 100% at maximum.

5.1

Sustainability Measures

Strategic objective

Weighting(of overall award)

Threshold

Maximum

a)

Safety - reduction in TRIIR and ICCA (measured by FY29 outcomes)

6.7%

TRIIR: 0.35

ICCA: 0.5

TRIIR: 0.25

ICCA: 0.4

b)

Reduction in Scope 1 and 2 GHG emissions (from FY20 baseline)

6.7%

62%

65%

c)

Female representation across management levels (Global Grade 12 and above)

6.7%

34%

38%

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Liam Condon

2

Reason for the notification

a)

Position/status

Chief Executive Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Share award under the Johnson Matthey Deferred Bonus Plan. Shares are deferred for a three year period.

c)

Price(s) and volume(s)

The reference share price is £21.0167 which is calculated using the average of the daily closing mid-market price on each dealing day over the four week period starting 28 May 2026 and ending 25 June 2026.

Price(s)

Volume(s)

£21.0167

23,623

d)

Aggregated information

- Aggregated volume

- Price

23,623

£21.0167

e)

Date of the transaction

3 August 2026

f)

Place of the transaction

Outside a trading venue

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Alastair Judge

2

Reason for the notification

a)

Position/status

Chief Financial Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Share award under the Johnson Matthey Deferred Bonus Plan. Shares are deferred for a three year period.

c)

Price(s) and volume(s)

The reference share price is £21.0167 which is calculated using the average of the daily closing mid-market price on each dealing day over the four week period starting 28 May 2026 and ending 25 June 2026.

Price(s)

Volume(s)

£21.0167

5,830

d)

Aggregated information

- Aggregated volume

- Price

5,830

£21.0167

e)

Date of the transaction

3 August 2026

f)

Place of the transaction

Outside a trading venue

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Richard Pike

2

Reason for the notification

a)

Position/status

Chief Operating Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Share award under the Johnson Matthey Deferred Bonus Plan. Shares are deferred for a three year period.

c)

Price(s) and volume(s)

The reference share price is £21.0167 which is calculated using the average of the daily closing mid-market price on each dealing day over the four week period starting 28 May 2026 and ending 25 June 2026.

Price(s)

Volume(s)

£21.0167

11,913

d)

Aggregated information

- Aggregated volume

- Price

11,913

£21.0167

e)

Date of the transaction

3 August 2026

f)

Place of the transaction

Outside a trading venue

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Liam Condon

2

Reason for the notification

a)

Position/status

Chief Executive Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Vesting of shares under the Johnson Matthey Performance Share Plan (shares awarded in August 2023) and subsequent sale/retention of vested shares.

Number of vested shares: 15,779

Number of vested shares sold to cover tax liabilities: 7,435

Number of vested shares retained: 8,344

The information below relates to the sale of the vested shares.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£19.775611

7,435

d)

Aggregated information

- Aggregated volume

- Price

7,435£19.775611

e)

Date of the transaction

4 August 2026

f)

Place of the transaction

LONDON STOCK EXCHANGE (XLON)

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Alastair Judge

2

Reason for the notification

a)

Position/status

Chief Financial Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Vesting of shares under the Johnson Matthey Performance Share Plan (shares awarded in August 2023) and subsequent sale/retention of vested shares.

Number of vested shares: 3,370

Number of vested shares sold to cover tax liabilities: 1,588

Number of vested shares retained: 1,782

The information below relates to the sale of the vested shares.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£19.775611

1,588

d)

Aggregated information

- Aggregated volume

- Price

1,588£19.775611

e)

Date of the transaction

4 August 2026

f)

Place of the transaction

LONDON STOCK EXCHANGE (XLON)

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Liam Condon

2

Reason for the notification

a)

Position/status

Chief Executive Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Vesting of shares under the Johnson Matthey Deferred Bonus Plan shares awarded in August 2023 and subsequent sale/retention of vested shares.

Number of vested shares: 41,468

Number of vested shares sold to cover tax liabilities: 19,539

Number of vested shares retained: 21,929

The information below relates to the sale of the vested shares.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£19.775611

19,539

d)

Aggregated information

- Aggregated volume

- Price

19,539

£19.775611

e)

Date of the transaction

4 August 2026

f)

Place of the transaction

LONDON STOCK EXCHANGE (XLON)

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Alastair Judge

2

Reason for the notification

a)

Position/status

Chief Operating Officer

b)

Initial notification / amendment

Initial notification

3

Details of the issuer

a)

Name

Johnson Matthey Plc

b)

LEI

2138001AVBSD1HSC6Z10

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary Shares of 110 49/53 pence each

GB00BZ4BQC70

b)

Nature of the transaction

Vesting of shares under the Johnson Matthey Deferred Bonus Plan shares awarded in August 2023 and subsequent sale/retention of vested shares.

Number of vested shares: 4,583

Number of vested shares sold to cover tax liabilities: 2,160

Number of vested shares retained: 2,423

The information below relates to the sale of the vested shares.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£19.775611

2,160

d)

Aggregated information

- Aggregated volume

- Price

2,160

£19.775611

e)

Date of the transaction

4 August 2026

f)

Place of the transaction

LONDON STOCK EXCHANGE (XLON)