Costs Associated with Exit or Disposal Activities. On August 6, 2026, the Board of Directors of GrafTech International Ltd. (the “Company”) approved a plan to permanently cease manufacturing operations at the Company’s graphite electrode and pin manufacturing facility located in Monterrey, Mexico (the “Monterrey Facility”). The Company began notifying affected employees on August 31, 2026. The Company is undertaking this action to better align the Company’s manufacturing capacity with current…

Results of Operations and Financial Condition. On July 24, 2026, GrafTech International Ltd. issued a press release announcing its financial results for the three and six months ended June 30, 2026. A copy of this press release is furnished herewith as Exhibit 99.1 and incorporated herein by reference. This information, including Exhibit 99.1, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to…

Entry into a Material Definitive Agreement. On May 29, 2026, GrafTech International Ltd. (the “ Company ”) entered into an Equity Distribution Agreement (the “ Equity Distribution Agreement ”) with Evercore Group L.L.C. (“ Evercore ”). Pursuant to the terms of the Equity Distribution Agreement, the Company may offer and sell through Evercore, from time to time and at its sole discretion, shares of the Company’s common stock, par value $0.01 per share (the “ Common Stock ”), having an aggregat…

Results of Operations and Financial Condition. On May 1, 2026, GrafTech International Ltd. issued a press release announcing its financial results for the three months ended March 31, 2026. A copy of this press release is furnished herewith as Exhibit 99.1 and incorporated herein by reference. This information, including Exhibit 99.1, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liab…

Results of Operations and Financial Condition. On February 6, 2026, GrafTech International Ltd. issued a press release announcing its financial results for the fourth quarter and year ended December 31, 2025. A copy of this press release is furnished herewith as Exhibit 99.1 and incorporated herein by reference. This information, including Exhibit 99.1, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise…

Director — Michel Dumas, Anthony Taccone: Two directors are resigning from the board without any disagreement with the company.

Results of Operations and Financial Condition. On October 24, 2025, GrafTech International Ltd. issued a press release announcing its financial results for the three and nine months ended September 30, 2025. A copy of this press release is furnished herewith as Exhibit 99.1 and incorporated herein by reference. This information, including Exhibit 99.1, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise s…

Material Modification to Rights of Security Holders. To the extent required by

Executive Vice President, Chief Operating Officer — Jeremy S. Halford: Mr. Halford resigned to pursue another opportunity.

Results of Operations and Financial Condition. On July 25, 2025, GrafTech International Ltd. issued a press release announcing its financial results for the three and six months ended June 30, 2025. A copy of this press release is furnished herewith as Exhibit 99.1 and incorporated herein by reference. This information, including Exhibit 99.1, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to…

Results of Operations and Financial Condition. On April 25, 2025, GrafTech International Ltd. issued a press release announcing its financial results for the three months ended March 31, 2025. A copy of this press release is furnished herewith as Exhibit 99.1 and incorporated herein by reference. This information, including Exhibit 99.1, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the l…

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On April 15, 2025, GrafTech International Ltd. (the “Company”) received written notice (the “Notice”) from the New York Stock Exchange (the “NYSE”) that it is not in compliance with the continued listing standard set forth in Section 802.01C of the NYSE’s Listed Company Manual (“Section 802.01C”) because the average closing price of the Company’s common stock per the Notice was less than $1.00…

Director — Eric V. Roegner: The company appointed Eric V. Roegner as a new Class I director and increased the board size from eight to nine members.

Results of Operations and Financial Condition. On February 7, 2025, GrafTech International Ltd. issued a press release announcing its financial results for the fourth quarter and year ended December 31, 2024. A copy of this press release is furnished herewith as Exhibit 99.1 and incorporated herein by reference. This information, including Exhibit 99.1, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise…

Entry into a Material Definitive Agreement. On January 10, 2025 (the “Effective Date”), GrafTech International Ltd. (the “Company”) entered into a Cooperation Agreement (the “Cooperation Agreement”) with Mr. Nilesh Undavia, who beneficially owns approximately 6.7% of the outstanding common stock, par value $0.01, of the Company (the “Common Stock”). Pursuant to the Cooperation Agreement, the Company has agreed to, among other things, (i) appoint Sachin Shivaram to the Board of Directors of th…

Director — Mr. Shivaram: Appointment of Mr. Shivaram as a Class III director and his inclusion in specific committees.

Chief Legal Officer and Corporate Secretary — Gina K. Gunning: Gina K. Gunning resigned to accept a role outside the company.

Entry Into a Material Definitive Agreement. Expiration and Settlement of the Exchange Offers and Consent Solicitation On December 23, 2024 (the “ Settlement Date ”), GrafTech International Ltd. (the “ Company ”) consummated the previously announced offers by GrafTech Finance Inc. (“ GrafTech Finance ”) and GrafTech Global Enterprises Inc. (“ GrafTech Global ” and, together with GrafTech Finance, the “ Issuers ”), each a subsidiary of the Company, to exchange (each an “ Exchange Offer ” and, t…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information in

of this Current Report on Form 8-K. On the Settlement Date, GrafTech Finance entered into a supplemental indenture to the Existing 4.625% Notes Indenture (the “ 4.625% Supplemental Indenture ”) and GrafTech Global entered in a supplemental indenture to the Existing 9.875% Notes Indenture (the “ 9.875% Supplemental Indenture ” and, together with the 4.625% Supplemental Indenture, the “ Supplemental Indentures ”) with U.S. Bank Trust Company, National Association, as trustee (in such capacity,…

Director — Marcel Kessler: Mr. Kessler resigned from the Board of Directors effective December 31, 2024.

Other Events. On November 21, 2024, GrafTech International Ltd. (the “Company”) announced that GrafTech Finance Inc. (“GrafTech Finance”) and GrafTech Global Enterprises Inc. (“GrafTech Global” and, together with GrafTech Finance, the “Issuers”), each a subsidiary of the Company, have commenced separate offers to exchange (each an “Exchange Offer” and, together, the “Exchange Offers”) any and all of (i) GrafTech Finance’s 4.625% senior secured notes due 2028 (the “Existing 4.625% Notes”) and…

Regulation FD Disclosure. Announcement Press Release A copy of the press release announcing the Transactions is attached as Exhibit 99.2 to this Form 8-K and incorporated herein by reference. Cleansing Materials In October 2024, the Company entered into confidentiality agreements (collectively, the “NDAs”) with an ad hoc group of bondholders consisting of (i) certain holders of the 4.625% Senior Secured Notes due 2028 issued by GrafTech Finance Inc. and (ii) certain holders of the 9.875% Seni…

of this Current Report on Form 8-K (the “Form 8-K”) (collectively, the “Transactions”), each of which is subject to the satisfaction or waiver of a number of customary closing conditions with respect thereto. New Money Term Loans Pursuant to the terms of the Commitment Letter, upon the closing of the Transactions (the “Closing”), the Fronting Lender has agreed to provide GrafTech Global Enterprises, Inc., a wholly owned subsidiary of GrafTech International (“GrafTech Global”), $175 million of…

Results of Operations and Financial Condition. On November 12, 2024, GrafTech International Ltd. issued a press release announcing its financial results for the three and nine months ended September 30, 2024. A copy of this press release is furnished herewith as Exhibit 99.1 and incorporated herein by reference. This information, including Exhibit 99.1, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise…