FORM 10-Q (Mark One)☑QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THESECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THESECURITIES EXCHANGE ACT OF 1934 PEABODY ENERGY CORPORATION (Exact name of registrant as specified in its charter)Delaware13-4004153(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.) 63101-1826(Zip Code) (314)342-3400(Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registeredCommon Stock, par value $0.01 per shareBTUNew York Stock Exchange Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the Securities Exchange Act of 1934 during thepreceding 12months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject to such filing requirements for the past90days. Yes☑No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of RegulationS-T(§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes☑No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerginggrowth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of theExchange Act: Large accelerated filer☑Accelerated filer☐Non-accelerated filer☐Smaller reporting company☐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 revisedfinancial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Exchange Act). Yes☐No☑ There were 121.8 million shares of the registrant’s common stock (par value of $0.01 per share) outstanding at May1, 2026. TABLE OF CONTENTS PART I — FINANCIAL INFORMATIONItem1. Financial StatementsUnaudited Condensed Consolidated Statements of OperationsUnaudited Condensed Consolidated Statements of Comprehensive (Loss) IncomeCondensed Consolidated Balance SheetsUnaudited Condensed Consolidated Statements of Cash FlowsUnaudited Condensed Consolidated Statements of Changes in Stockholders’ EquityNotes to Unaudited Condensed Consolidated Financial StatementsItem2. Management's Discussion and Analysis of Financial Condition and Results of OperationsItem3. Quantitative and Qualitative Disclosures About Market RiskItem4. Controls and ProceduresPART II — OTHER INFORMATIONItem1. Legal ProceedingsItem1A. Risk FactorsItem2. Unregistered Sales of Equity Securities and Use of ProceedsItem4. Mine Safety DisclosuresItem5. Other InformationItem6. ExhibitsEXHIBIT INDEXSIGNATURE PART I - FINANCIAL INFORMATION PEABODY ENERGY CORPORATIONUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS PEABODY ENERGY CORPORATIONUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME PEABODY ENERGY CORPORATIONCONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)March 31, 2026December 31, 2025(Amounts in millions, except per share data) PEABODY ENERGY CORPORATIONUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS PEABODY ENERGY CORPORATIONUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - (Continued) PEABODY ENERGY CORPORATIONUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY PEABODY ENERGY CORPORATIONNOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (1)Basis of Presentation The unaudited condensed consolidated financial statements include the accounts of Peabody Energy Corporation (PEC) and itsconsolidated subsidiaries and affiliates (along with PEC, the Company or Peabody). Interests in subsidiaries controlled by theCompany are consolidated with any outside stockholder interests reflected as noncontrolling interests, except when the Companyhas an undivided interest in a joint venture. In those cases, the Company includes its proportionate share in the assets, liabilities,revenue and expenses of the jointly controlled entities within each applicable line item of the unaudited condensed consolidatedfinancial statements. All intercompany transactions, profits and balances have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accountingprinciples generally accepted in the United States (U.S.GAAP) for interim financial information and with the instructions to Form10-