Smurfit West Regulatory News (SWR)

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Anthony Smurfit

2

Reason for the notification

a)

Position/status

President & Group Chief Executive Officer /Executive Director

b)

Initial notification /Amendment

Initial Notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Smurfit Westrock plc

b)

LEI

635400EGSEOPDW2EXS14

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

Ordinary Shares of $0.001 each

Identification code

IE00028FXN24

b)

Nature of the transaction

Vesting of the dividend equivalent units which accrued on 18 March 2026 in relation to the first tranche of the 2025 RSU Conditional Awards granted under the Smurfit Westrock 2024 Long-Term Incentive Plan

c)

Price(s) and volume(s)

Price(s)

Volume(s)

Nil

240

d)

Aggregated information

N/A

- Aggregated volume

- Price

e)

Date of the transaction

19th March, 2026

f)

Place of the transaction

N/A (Outside a trading venue)

g)

Additional Information

Shares are being delivered on a net settlement basis

Net settlement price was $38.58

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

 Ken Bowles

2

Reason for the notification

a)

Position/status

Executive Vice President & Group Chief Financial Officer /Executive Director

b)

Initial notification /Amendment

Initial Notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Smurfit Westrock plc

b)

LEI

635400EGSEOPDW2EXS14

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

Ordinary Shares of $0.001 each

Identification code

IE00028FXN24

b)

Nature of the transaction

Vesting of the dividend equivalent units which accrued on 18 March 2026 in relation to the first tranche of the 2025 RSU Conditional Awards granted under the Smurfit Westrock 2024 Long-Term Incentive Plan

c)

Price(s) and volume(s)

Price(s)

Volume(s)

Nil

35

d)

Aggregated information

N/A

- Aggregated volume

- Price

e)

Date of the transaction

19th March, 2026

f)

Place of the transaction

N/A (Outside a trading venue)

g)

Additional Information

Shares are being delivered on a net settlement basis

Net settlement price was $38.58

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Laurent Sellier

2

Reason for the notification

a)

Position/status

President & Chief Executive Officer (North America including Mexico)

b)

Initial notification /Amendment

Initial Notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Smurfit Westrock plc

b)

LEI

635400EGSEOPDW2EXS14

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

Ordinary Shares of $0.001 each

Identification code

IE00028FXN24

b)

Nature of the transaction

Vesting of the dividend equivalent units which accrued on 18 March 2026 in relation to the first tranche of the 2025 RSU Conditional Awards granted under the Smurfit Westrock 2024 Long-Term Incentive Plan

c)

Price(s) and volume(s)

Price(s)

Volume(s)

Nil

44

d)

Aggregated information

N/A

- Aggregated volume

- Price

e)

Date of the transaction

19th March, 2026

f)

Place of the transaction

N/A (Outside a trading venue)

g)

Additional Information

Shares are being delivered on a net settlement basis

Net settlement price was $38.58

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Saverio Mayer

2

Reason for the notification

a)

Position/status

President & Chief Executive Officer (Europe, MEA, APAC)

b)

Initial notification /Amendment

Initial Notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Smurfit Westrock plc

b)

LEI

635400EGSEOPDW2EXS14

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

Ordinary Shares of $0.001 each

Identification code

IE00028FXN24

b)

Nature of the transaction

Vesting of the dividend equivalent units which accrued on 18 March 2026 in relation to the first tranche of the 2025 RSU Conditional Awards granted under the Smurfit Westrock 2024 Long-Term Incentive Plan

c)

Price(s) and volume(s)

Price(s)

Volume(s)

Nil

35

d)

Aggregated information

N/A

- Aggregated volume

- Price

e)

Date of the transaction

19th March, 2026

f)

Place of the transaction

N/A (Outside a trading venue)

g)

Additional Information

Shares are being delivered on a net settlement basis

Net settlement price was $38.58

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Ben Garren

2

Reason for the notification

a)

Position/status

Executive Vice President & Group General Counsel

b)

Initial notification /Amendment

Initial Notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Smurfit Westrock plc

b)

LEI

635400EGSEOPDW2EXS14

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

Ordinary Shares of $0.001 each

Identification code

IE00028FXN24

b)

Nature of the transaction

Vesting of the dividend equivalent units which accrued on 18 March 2026 in relation to the first tranche of the 2025 RSU Conditional Awards granted under the Smurfit Westrock 2024 Long-Term Incentive Plan

c)

Price(s) and volume(s)

Price(s)

Volume(s)

Nil

21

d)

Aggregated information

N/A

- Aggregated volume

- Price

e)

Date of the transaction

19th March, 2026

f)

Place of the transaction

N/A (Outside a trading venue)

g)

Additional Information

Shares are being delivered on a net settlement basis

Net settlement price was $38.58

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Alvaro Henao

2

Reason for the notification

a)

Position/status

President & Chief Executive Officer, LATAM

b)

Initial notification /Amendment

Initial Notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Smurfit Westrock plc

b)

LEI

635400EGSEOPDW2EXS14

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

Ordinary Shares of $0.001 each

Identification code

IE00028FXN24

b)

Nature of the transaction

Vesting of the dividend equivalent units which accrued on 18 March 2026 in relation to the first tranche of the 2025 RSU Conditional Awards granted under the Smurfit Westrock 2024 Long-Term Incentive Plan

c)

Price(s) and volume(s)

Price(s)

Volume(s)

Nil

10

d)

Aggregated information

N/A

- Aggregated volume

- Price

e)

Date of the transaction

19th March, 2026

f)

Place of the transaction

N/A (Outside a trading venue)

g)

Additional Information

Shares are being delivered on a net settlement basis

Net settlement price was $38.58