X0306 4 2021-03-15 1 0001708035 PQ Group Holdings Inc. PQG 0001769798 Kolberg Ray C/O PQ GROUP HOLDINGS INC. 300 LINDENWOOD DRIVE MALVERN PA 19355 0 1 0 0 See Remarks The reporting person is no longer subject to Section 16 in connection with his transactions in the equity securities of PQ Group Holdings Inc. and therefore will no longer report any such transactions on Form 4 or Form 5, effective March 15, 2021. /s/ Joseph S. Koscinski, as attorney-in-fact for Ray Kolberg 2021-03-16