X0306 4 2017-10-02 0 0001708035 PQ Group Holdings Inc. PQG 0001438324 Crews Michael C. C/O PQ GROUP HOLDINGS INC. 300 LINDENWOOD DRIVE MALVERN PA 19355 0 1 0 0 See Remarks Common Stock 2017-10-02 4 A 0 110784 0.00 A 241659 D Common Stock 28005 I By family trust Stock Option (right to buy) 16.97 2017-10-02 4 A 0 31599 0.00 A 2027-10-02 Common Stock 31599 31599 D Stock Option (right to buy) 16.97 2017-10-02 4 A 0 55762 0.00 A 2027-10-02 Common Stock 55762 87361 D Represents shares of common stock held by a family trust. Mr. Crews disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and the filing of this report is not an admission that Mr. Crews is the beneficial owner of such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. This option vests in two equal annual installments beginning on June 30, 2018. This option vests in three equal annual installments beginning on October 2, 2018. Executive Vice President and Chief Financial Officer /s/ Joseph S. Koscinski, as attorney-in-fact for Michael Crews 2017-10-04