PQ Group Holdings Inc. (PQG) Q3 2020 Earnings Conference Call October 30, 2020 10:30 AM ET Company Participants Nahla Azmy - Head, Investor Relations Belgacem Chariag - Chairman, President and Chief Executive Officer Mike Crews - Executive Vice President and Chief Financial Officer Conference Call Participants David Begleiter - Deutsche Bank John McNulty - BMO Capital Markets Chris Parkinson - Credit Suisse Dan Rizwan - Jefferies Angel Castillo - Morgan Stanley Operator [Abrupt start] And I'll be your confe ...

Table of Contents Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading symbol Name of each exchange on which registered Common stock, par value $0.01 per share PQG New York Stock Exchange UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE ...

PQ Group Holdings Inc. (PQG) Q2 2020 Results Conference Call July 30, 2020 11:00 AM ET Company Participants Nahla Azmy - VP, IR Belgacem Chariag - Chairman, President and CEO Mike Crews - EVP and CFO Conference Call Participants Kieran Christopher - Crédit Suisse Tom Glinski - Goldman Sachs Angel Castillo - Morgan Stanley Kendall Marthaler - Citi David Begleiter - Deutsche Bank Laurence Alexander - Jefferies Colton Bina - BMO Capital Markets David Silver - CL King Silke Kueck - JPMorgan Operator Good day, a ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38221 PQ Group Holdings Inc. Delaware 81-3406833 (State or other jurisdiction of incorporation or organizatio ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38221 PQ Group Holdings Inc. Delaware 81-3406833 (State or other jurisdiction of incorporation or organization) (I ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38221 PQ Group Holdings Inc. Delaware 81-3406833 (State or other jurisdiction of incorporation or organiz ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38221 PQ Group Holdings Inc. Delaware 81-3406833 (State or other jurisdiction of incorporation or organization ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38221 | --- | --- | |----------------------------------------------------------------------------|----------- ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38221 | --- | --- | |----------------------------------------------------------------------------|---------------- ...