Glatfelter (GLT) - 2023 Q4 - Annual Report

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, 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 code ...