| | | | | |
| Subsidiary | Jurisdiction of Formation |
| 3PO LLC | Delaware |
| Auxquimia S.A.U. | Spain |
| Biogema S.A.S. | France |
| First Response Fire Rescue, LLC | Delaware |
| H&S Transport, LLC | Delaware |
| Horn Holdings, LLC | Delaware |
| IMS DE Holdings, LLC | Delaware |
| Intelligent Manufacturing Solutions, LLC | Delaware |
| Invictus France S.A.S. | France |
| LaderaTech, Inc. | Delaware |
| Perimeter Holdings, LLC | Delaware |
| Perimeter Intermediate, LLC | Delaware |
| Perimeter Solutions Canada Ltd. | Canada |
| Perimeter Solutions DE GmbH | Germany |
| Perimeter Solutions LLC | Delaware |
| Perimeter Solutions LP | Delaware |
| Perimeter Solutions North America Inc. | Delaware |
| Perimeter US, LLC | Delaware |
| Phosphorus Derivatives Inc. | Delaware |
| PSNA Holdings, LLC | Delaware |
| PSNA Intermediate Inc. | Delaware |
| River City Fabrication L.L.C | Delaware |
| SK Invictus Spain Sociedad Limitada | Spain |
| Solberg Asia Pacific Pty Ltd | Australia |
| Solberg Scandinavian AS | Norway |