Exhibit 21.1

SUBSIDIARIES OF
PERIMETER SOLUTIONS, SA
As of December 31, 2021



SubsidiaryJurisdiction of Formation
Perimeter Solutions SAGrand Duchy of Luxembourg
Everarc Holdings LTD.British Virgin Islands
SKII S.a.r.lGrand Duchy of Luxembourg
SKII II S.a.r.l.Grand Duchy of Luxembourg
SKIG S.a.r.lGrand Duchy of Luxembourg
Invictus France S.A.SFrance
Biogema S.A.S.France
Invictus US Holdings LLCDelaware
Perimeter Solutions North America Inc.Delaware
Perimeter Solutions Inc.Delaware
Perimeter Solutions Canada LtdCanada
Perimeter Solutions LLCDelaware
Perimeter Solutions LPDelaware
H&S Transport, LLCDelaware
LaderaTech, Inc.Delaware
River City Fabrication LLCDelaware
Phosphorus Derivatives Inc.Delaware
Invictus US LLCDelaware
McWane Lux IPGrand Duchy of Luxembourg
Perimeter Solutions De GmbHGermany
SK Invictus Spain Sociedad LimitadaSpain
Auxquimia S.A.U.Spain
Solberg Scandinavian ASNorway
Solberg Asia Pacific Pty LtdAustralia