X0407 4 2023-01-20 0 0000041719 Glatfelter Corp GLT 0001056973 CARLSON CAPITAL L P 2100 MCKINNEY AVE STE 1900 DALLAS TX 75201 0 0 1 0 0001404976 Double Black Diamond Offshore Ltd 2100 MCKINNEY AVENUE STE 1900 DALLAS TX 75201 0 0 1 0 0001613525 Black Diamond Arbitrage Offshore Ltd. 2100 MCKINNEY AVENUE STE 1900 DALLAS TX 75201 0 0 1 0 0001951606 EDCA 2019 Fund, L.P. 2100 MCKINNEY AVENUE STE 1900 DALLAS TX 75201 0 0 1 0 0001503915 Asgard Investment Corp. II 2100 MCKINNEY AVENUE STE 1900 DALLAS TX 75201 0 0 1 0 0001404625 Carlson Clint Duane 2100 MCKINNEY AVENUE STE 1900 DALLAS TX 75201 0 0 1 0 0 Common Stock, par value $0.01 per share (the "Common Stock") 2023-01-20 4 X 0 50000 2.50 A 5415000 I See footnotes Common Stock 2023-03-29 4 P 0 500000 3.0938 A 5915000 I See footnotes Stock Option (right to buy) 2.50 2023-01-20 4 X 0 50000 0.00 D 2023-01-20 Common Stock 50000 0 I See footnotes The shares of Common Stock to which this relates are held directly by Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore"), Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage") and EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA," together with Double Offshore and Arbitrage, the "Funds"). Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of, the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital. (continued from footnote 1) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities. Transaction reflects direct exercise by Double Offshore. The stock options were exercisable at any time before and including the date of its expiration. Transaction reflects direct acquisition by Double Offshore of 162,255 shares, by Arbitrage of 253,655 shares and by EDCA of 84,090 shares. Carlson Capital, L.P., By: /s/ Clint D. Carlson, Title: President 2023-03-31 Double Black Diamond Offshore Ltd., By its general partner Asgard II, By: /s/ Clint D. Carlson, Title: President 2023-03-31 Black Diamond Arbitrage Offshore Ltd., By its investment manager Carlson Capital, L.P., By its general partner Asgard II, By: /s/ Clint D. Carlson, Title: President 2023-03-31 EDCA 2019 Fund, L.P., By its investment manager Carlson Capital, L.P., By its general partner Asgard II, By: /s/ Clint D. Carlson, Title: President 2023-03-31 Asgard Investment Corp. II, By: /s/ Clint D. Carlson, Title: President 2023-03-31 Clint D. Carlson, By: /s/ Clint D. Carlson 2023-03-31