| 424B5 | Prospectus filed pursuant to Rule 424(b)(5) | SMURFIT INTERNATIONAL B V , WRKCo Inc. , WestRock Co , WestRock MWV, LLC , WestRock RKT, LLC , Smurfit Westrock plc , Smurfit Kappa Acquisitions Unlimited Co , Smurfit Kappa Investments Ltd , Smurfit Kappa Treasury Funding Designated Activity Co , Smurfit WestRock | Toppan Merrill/fa | 11/19/2025 | |
| FWP | Filing under Securities Act Rules 163/43... | Smurfit Westrock Us Holdings Corp | Toppan Merrill/fa | 11/18/2025 | |
| 424B5 | Prospectus filed pursuant to Rule 424(b)(5) | SMURFIT INTERNATIONAL B V , WRKCo Inc. , WestRock Co , WestRock MWV, LLC , WestRock RKT, LLC , Smurfit Westrock plc , Smurfit Kappa Acquisitions Unlimited Co , Smurfit Kappa Investments Ltd , Smurfit Kappa Treasury Funding Designated Activity Co , Smurfit WestRock | Toppan Merrill/fa | 11/18/2025 | |
| 424B5 | Prospectus filed pursuant to Rule 424(b)(5) | SMURFIT INTERNATIONAL B V , WRKCo Inc. , WestRock Co , WestRock MWV, LLC , WestRock RKT, LLC , Smurfit Westrock plc , Smurfit Kappa Acquisitions Unlimited Co , Smurfit Kappa Investments Ltd , Smurfit Kappa Treasury Funding Designated Activity Co , Smurfit WestRock | Toppan Merrill/fa | 11/18/2025 | |
| FWP | Filing under Securities Act Rules 163/43... | Smurfit Westrock Us Holdings Corp | Toppan Merrill/fa | 11/17/2025 | |
| 424B5 | Prospectus filed pursuant to Rule 424(b)(5) | SMURFIT INTERNATIONAL B V , WRKCo Inc. , WestRock Co , WestRock MWV, LLC , WestRock RKT, LLC , Smurfit Westrock plc , Smurfit Kappa Acquisitions Unlimited Co , Smurfit Kappa Investments Ltd , Smurfit Kappa Treasury Funding Designated Activity Co , Smurfit WestRock | Toppan Merrill/fa | 11/17/2025 | |
| S-3ASR | Automatic shelf registration statement o... | SMURFIT INTERNATIONAL B V , WRKCo Inc. , WestRock Co , WestRock MWV, LLC , WestRock RKT, LLC , Smurfit Westrock plc , Smurfit Kappa Acquisitions Unlimited Co , Smurfit Kappa Investments Ltd , Smurfit Kappa Treasury Funding Designated Activity Co , Smurfit WestRock | Toppan Merrill/fa | 11/12/2025 | |
| EFFECT | Effectiveness refer to a Registration St... | | Cik 9999999995 /fa | 04/23/2025 | |
| 424B3 | Prospectus filed pursuant to Rule 424(b)(3) | SMURFIT INTERNATIONAL B V , WRKCo Inc. , WestRock Co , WestRock MWV, LLC , WestRock RKT, LLC , Smurfit Westrock plc , Smurfit Kappa Acquisitions Unlimited Co , Smurfit Kappa Investments Ltd , Smurfit Kappa Treasury Funding Designated Activity Co , Smurfit WestRock | Toppan Merrill/fa | 04/23/2025 | |
| S-4 | Registration of securities issued in bus... | SMURFIT INTERNATIONAL B V , WRKCo Inc. , WestRock Co , WestRock MWV, LLC , WestRock RKT, LLC , Smurfit Westrock plc , Smurfit Kappa Acquisitions Unlimited Co , Smurfit Kappa Investments Ltd , Smurfit Kappa Treasury Funding Designated Activity Co , Smurfit WestRock | Toppan Merrill/fa | 04/03/2025 | |
| No record found. |