尼索思 2026年季度报告

FORM 10-Q For the quarterly period ended March31, 2026 NiSource Inc. (Exact name of registrant as specified in its charter) 46410(Zip Code) (614) 460-6000(Registrant’s telephone number, including area code) Securities registered pursuant to Section12(b)of the Act: Common Stock, par value $0.01 per share 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 12 months (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 past 90 YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-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. 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☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes☐No☑ Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date: Common Stock, $0.01 Par Value:479,439,245 shares outstanding at April29, 2026. Defined Terms PARTIFINANCIAL INFORMATION PARTIIOTHER INFORMATION Item1.Legal ProceedingsItem1A.Risk FactorsItem2.Unregistered Sales of Equity Securities and Use of Proceeds DEFINED TERMS Abbreviations and OtherADS CEPCERCLA Contract Assets Generation Assets Generation Holdings II LLC Agreement DEFINED TERMS A transaction between NiSource, NIPSCO Holdings II (sole owner ofNIPSCO) and an affiliate of Blackstone pursuant to a purchase and saleagreement entered into on June 17, 2023, that offered equity interests inNIPSCO Holdings II in exchange for capital contributions by the parties. Reportable segment comprised of the results of NIPSCO Holdings I,NIPSCO Holdings II, and NIPSCO and all related subsidiariesNew York Mercantile ExchangeOther postemployment benefitsPipeline and Hazardous Materials Safety AdministrationPortfolio of electric generation assets and related assets owned or contractedforby NIPSCO and/or its affiliates(primarily including GenCo)anddesigned to serve the needs of data center customers.Power purchase agreementReturn on equitySteps to advance Virginia's energy planDirect emissions from sources owned or controlled by us (e.g., emissionsfrom our combustion of fuel, vehicles, and process emissions and fugitiveemissions)Indirect emissions from sources owned or controlled by usSecurities and Exchange CommissionKentucky safety modification and replacement programSafety management systemAn Act to provide for reconciliation pursuant to titles II and V of theconcurrent resolution on the budget for fiscal year 2018 (commonly knownas the Tax Cuts and Jobs Act of 2017)Indiana transmission, distribution and storage system improvement chargeTempleton Wind Energy LLCVariable interest entity2018 integrated resource plan2021 integrated resource plan2024 integrated resource plan PPAROE Scope 2 GHG EmissionsSEC TDSICTempletonVIE Note regarding forward-looking statements This Quarterly Report on Form 10-Q contains "forward-looking statements" within the meaning of Section 27A of the Securities Actof 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "ExchangeAct"). These forward-looking statements include, but are not limited to, statements concerning our plans, strategies, objectives,expected performance, planned expenditures, recovery of expenditures through rates, stated on either a consolidated or segment basis,and any and all underlying assumptions and other statements that are not statements of historical fact. Expressions of future goals andexpectations and similar expressions reflecting something other than historical fact, including "may," "will," "should," "could,""would," "aims," "seeks," "expects," "plans," "anticipates," "intends," "believes," "estimates," "predicts," "potential," "targets," Factors that could cause actual results to differ materially from those projected in any forward-looking statement discussed in thisQuarterly Report on Form 10-Q include, among other things: •our ability to execute our business plan or growth strategy, including utility infrastructure investments, or businessopportunities; •our ability to manage da