UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended March 31, 2023 or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to 4350 Congress Street, Suite 600 Charlotte, North Carolina 28209 (Address of principal executive offices) (704) 885-2555 (Registrant's telephone number, including area ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☑ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2022 or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to 4350 Congress Street, Suite 600 Charlotte, North Carolina 28209 (Address of principal executive offices) (704) 885-2555 (Registrant's telephone number, i ...

Glatfelter Corporation (NYSE:GLT) Q4 2022 Earnings Conference Call February 21, 2023 11:00 AM ET Company Participants Ramesh Shettigar - SVP, CFO & Treasurer Thomas Fahnemann - President & CEO Conference Call Participants Roger Spitz - Bank of America Josh Wool - Carlson Capital Shaun Nicholson - Segall Bryant & Hamill Operator Good day everyone, and welcome to the Q4 2022 Glatfelter Earnings Conference Call. Today's conference is being recorded. At this time, I would like to turn the conference over to Ram ...