Exhibit 21.1

SUBSIDIARIES OF

PERIMETER SOLUTIONS, SA

As of December 31, 2023

Subsidiary			Jurisdiction of Formation
Perimeter Solutions SA			Grand Duchy of Luxembourg
Everarc Holdings LTD.			British Virgin Islands
SK Invictus Intermediate S.a.r.l			Grand Duchy of Luxembourg
SK Invictus Intermediate II S.a.r.l.			Grand Duchy of Luxembourg
SK Invictus Group S.a.r.l			Grand Duchy of Luxembourg
Invictus France S.A.S			France
Biogema S.A.S.			France
Invictus US Holdings LLC			Delaware
Perimeter Solutions North America Inc.			Delaware
Perimeter Solutions Inc.			Delaware
Perimeter Solutions Canada Ltd			Canada
Perimeter Solutions LLC			Delaware
Perimeter Solutions LP			Delaware
H&S Transport, LLC			Delaware
LaderaTech, Inc.			Delaware
River City Fabrication LLC			Delaware
Phosphorus Derivatives Inc.			Delaware
Invictus US LLC			Delaware
McWane Luxembourg IP S.a.r.l.			Grand Duchy of Luxembourg
Perimeter Solutions De GmbH			Germany
SK Invictus Spain Sociedad Limitada			Spain
Auxquimia S.A.U.			Spain
Solberg Scandinavian AS			Norway
Solberg Asia Pacific Pty Ltd			Australia
First Response Fire Rescue, LLC			Delaware
Horn Holdings, LLC			Delaware