X0206 3 2017-09-29 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 130875 D Common Stock 28005 I By family trust Option (Right to Buy) 8.05 2017-06-30 2026-06-30 Common Stock 15225 D Option (Right to Buy) 6.88 2017-08-01 2025-08-01 Common Stock 13634 D Option (Right to Buy) 8.05 2018-06-30 2026-06-30 Common Stock 15226 D Option (Right to Buy) 8.05 2019-06-30 2026-06-30 Common Stock 15226 D Option (Right to Buy) 6.88 2019-08-01 2025-08-01 Common Stock 13634 D Option (Right to Buy) 6.88 2025-08-01 Common Stock 27268 D Option (Right to Buy) 8.05 2026-06-30 Common Stock 45678 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 upon the earlier of (i) the achievement of certain performance conditions related to the market price of the issuer's common stock and (ii) 8/1/2019. This options vests upon the achievement of certain performance conditions related to the market price of the issuer's common stock. Executive Vice President and Chief Financial Officer Exhibit 24.1 - Power of Attorney /s/ Joseph S. Koscinski, attorney-in-fact 2017-09-29