OTHER INFORMATION
−Removed: During the quarter ended September 30, 2025, no director or officer (as defined in Rule 16a-1(f) promulgated under the Exchange Act) of the Company adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement" (as each term is defined in Item 408 of Regulation S-K).
+Added: Securities Trading Arrangements .
+Added: During the quarter ended March 31, 2026, no director or officer (as defined in Rule 16a-1(f) promulgated under the Exchange Act) of the Company adopted or terminated a "Rule 10b5-1 trading arrangement" or a "non-Rule 10b5-1 trading arrangement" (as each term is defined in Item 408 of Regulation S-K).
+Added: Supplemental Mine Safety Reporting .
+Added: The following information is included for the purpose of providing disclosure under "Item 1.04 Mine Safety - Reporting of Shutdowns and Patterns of Violations" of Form 8-K.
+Added: Section 1503(b)(1) of the Dodd-Frank Act requires the disclosure of the receipt of an imminent danger order (an "Order") under Section 107(a) of the Federal Mine Safety and Health Act of 1977 issued by the Mine Safety and Health Administration ("MSHA").
+Added: On April 18, 2026, Tilden Mining Company L.C., an indirect wholly-owned subsidiary of Cliffs ("Tilden"), received an Order from MSHA at Tilden's operations in Michigan regarding an employee observed working from a raised bucket of a Tilden vehicle without adequate fall protection.
+Added: MSHA also observed that a safety chain within the bucket was not latched while the employee was working.
+Added: Subsequent to issuance of the oral Order, the employee returned to the ground.
+Added: The condition cited in the Order did not result in an accident or injury and did not adversely impact Tilden's operations at the mine.
All documents referenced below have been filed pursuant to the Securities Exchange Act of 1934 by Cleveland-Cliffs Inc., file number 1-08944, unless otherwise indicated.
Number Exhibit
−Removed: Indenture, dated as of September 8, 2025, among Cleveland-Cliffs Inc., the Guarantors party thereto and U.S.
−Removed: Bank Trust Company, National Association, as trustee, including Form of 7.625% Senior Guaranteed Notes due 2034 (filed herewith).
−Removed: First Supplemental Indenture, dated as of October 10, 2025, among Cleveland-Cliffs Inc., the Guarantors party thereto and U.S.
−Removed: Bank Trust Company, National Association, as trustee (filed herewith).
−Removed: Schedule of the obligated group, including the parent and issuer and the subsidiary guarantors that have guaranteed the obligations under the 5.875% 2027 Senior Notes, the 7.000% 2027 Senior Notes, the 4.625% 2029 Senior Notes, the 6.875% 2029 Senior Notes, the 6.750% 2030 Senior Notes, the 4.875% 2031 Senior Notes, the 7.500% 2031 Senior Notes, the 7.000% 2032 Senior Notes, the 7.375% 2033 Senior Notes, and the 7.625% 2034 Senior Notes issued by Cleveland-Cliffs Inc.
+Added: * Form of Cleveland-Cliffs Inc.
+Added: 2021 Equity and Incentive Compensation Plan Restricted Stock Units Award Memorandum and Restricted Stock Units Award Agreement (2026 RSUs) (filed herewith).
+Added: * Form of Cleveland-Cliffs Inc.
+Added: 2021 Equity and Incentive Compensation Plan Restricted Stock Units Award Memorandum and Restricted Stock Units Award Agreement (2026 RSUs - EXEC) (filed herewith).
+Added: * Form of Cleveland-Cliffs Inc.
+Added: 2021 Equity and Incentive Compensation Plan Market Stock Units Award Memorandum and Market Stock Units Award Agreement (2026 MSUs) (filed herewith).
+Added: * Form of Cleveland-Cliffs Inc.
+Added: 2021 Equity and Incentive Compensation Plan Market Stock Units Award Memorandum and Market Stock Units Award Agreement (2026 MSUs - EXEC) (filed herewith).
+Added: Schedule of the obligated group, including the parent and issuer and the subsidiary guarantors that have guaranteed the obligations under the 4.625% 2029 Senior Notes, the 6.875% 2029 Senior Notes, the 6.750% 2030 Senior Notes, the 4.875% 2031 Senior Notes, the 7.500% 2031 Senior Notes, the 7.000% 2032 Senior Notes, the 7.375% 2033 Senior Notes, and the 7.625% 2034 Senior Notes issued by Cleveland-Cliffs Inc.
(filed herewith).
Certification Pursuant to 15 U.S.C.
−Removed: Section 7241, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, signed and dated by Lourenco Goncalves as of October 22, 2025 (filed herewith).
+Added: Section 7241, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, signed and dated by Lourenco Goncalves as of April 21, 2026 (filed herewith).
Certification Pursuant to 15 U.S.C.
1 unchanged sentence
Goncalves Jr.
−Removed: as of October 22, 2025 (filed herewith).
+Added: as of April 21, 2026 (filed herewith).
Certification Pursuant to 18 U.S.C.
−Removed: Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, signed and dated by Lourenco Goncalves, Chairman, President and Chief Executive Officer of Cleveland-Cliffs Inc., as of October 22, 2025 (filed herewith).
+Added: Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, signed and dated by Lourenco Goncalves, Chairman, President and Chief Executive Officer of Cleveland-Cliffs Inc., as of April 21, 2026 (filed herewith).
Certification Pursuant to 18 U.S.C.
Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, signed and dated by Celso L.
−Removed: Goncalves Jr., Executive Vice President, Chief Financial Officer of Cleveland-Cliffs Inc., as of October 22, 2025 (filed herewith).
+Added: Goncalves Jr., Executive Vice President, Chief Financial Officer of Cleveland-Cliffs Inc., as of April 21, 2026 (filed herewith).
Mine Safety Disclosures (filed herewith).
−Removed: 101 The following financial information from Cleveland-Cliffs Inc.'s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2025 formatted in Inline XBRL (Extensible Business Reporting Language) includes:
+Added: 101 The following financial information from Cleveland-Cliffs Inc.'s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2026 formatted in Inline XBRL (Extensible Business Reporting Language) includes:
(i) the Statements of Unaudited Condensed Consolidated Financial Position, (ii) the Statements of Unaudited Condensed Consolidated Operations, (iii) the Statements of Unaudited Condensed Consolidated Comprehensive Loss, (iv) the Statements of Unaudited Condensed Consolidated Cash Flows, (v) the Statements of Unaudited Condensed Consolidated Changes in Equity, and (vi) Notes to the Unaudited Condensed Consolidated Financial Statements.
104 The cover page from this Quarterly Report on Form 10-Q, formatted in Inline XBRL and contained in Exhibit 101.
+Added: * Indicates management contract or other compensatory arrangement.
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, thereunto duly authorized.
2 unchanged sentences
Senior Vice President, Controller & Chief Accounting Officer
−Removed: October 22, 2025
+Added: April 21, 2026
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.