Smurfit Westrock plc

The USD Notes are guaranteed by Smurfit Westrock, SKT, Smurfit Kappa Group Limited, Smurfit Kappa Investments Limited, Smurfit Kappa Acquisitions Unlimited Company, Smurfit Kappa Treasury Funding Designated Activity Company, Smurfit International B.V., Smurfit WestRock US Holdings Corporation, WestRock Company, WRKCo Inc., WestRock MWV, LLC and WestRock RKT, LLC (collectively, the “USD Guarantors”).

Interest on the USD Notes is payable semi-annually in arrears on January 15 and July 15 of each year, commencing on July 15, 2026. The USD Notes bear interest at 5.185% per annum and will mature on January 15, 2036.

Prior to October 15, 2035, SWF may redeem the USD Notes at its option, in whole or in part, at any time and from time to time, at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of (a) 100% of the principal amount of the USD Notes to be redeemed and (b) (i) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the USD Notes to be redeemed are scheduled to mature on October 15, 2035) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 20 basis points, less (ii) interest accrued to the date of redemption, plus, in either case, accrued and unpaid interest thereon and Additional Amounts (as defined in the Base Indenture), if any, to, but excluding, the redemption date (subject to the right of holders of record on the relevant record date to receive interest due on the relevant interest payment date).

On or after October 15, 2035, SWF may redeem the USD Notes, in whole or in part, at any time and from time to time, at a redemption price equal to 100% of the principal amount of the USD Notes being redeemed, plus accrued and unpaid interest and Additional Amounts, if any, thereon, to, but excluding, the redemption date (subject to the right of holders of record on the relevant record date to receive interest due on the relevant interest payment date).