Results of Operations

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934   Date of Report (Date of Earliest Event Reported):   November 9, 2020   Glatfelter Corporation   (Exact name of registrant as specified in its charter)   Pennsylvania 001-03560 23-0628360                   (State or other jurisdiction (Commission (I.R.S. Employer of incorporation) File Number) Identification No.)        4350 Congress Street , Suite 600 , Charlotte , North Carolina   28209               (Address of principal executive offices)   (Zip Code)       Registrant’s telephone number, including area code:   704 885-2555 (N/A) Former name or former address, if changed since last report Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:   ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))   Securities registered pursuant to Section 12(b) of the Act:   Title of each class   Trading Symbol(s)   Name of each exchange on which registered Common Stock   GLT   New York Stock Exchange   Indicate by check mark whether the registrant is an emerging growth company in as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).   Emerging growth company   ☐   If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ☐   Item 2.02 Results of Operations and Financial Condition. On November 9, 2020, the Company reported its results of operations for the three months and nine months ended September 30, 2020. A copy of the press release issued by the Company is furnished herewith as Exhibit 99.1. Item 9.01 Financial Statements and Exhibits. d) Exhibits. 99.1 Press release issued by the Company to report its results of operations for the three months and nine months ended September 30, 2020 .   104 Cover Page Interactive Data File (embedded within the Inline XBRL document).   The information furnished in this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.       Glatfelter Corporation            November 9, 2020   By:   /s/ David C. Elder                   Name: David C. Elder         Title:   Vice President, Finance and Chief Accounting Officer         (Principal accounting officer)