Supplemental Slides 3Q 2022 Results

● KEY TAKEAWAYS 2022 guidance narrowed 2022 non-GAAP diluted NOEPS guidance range of $1.44 to $1.46 Continue to expect 2022 capital expenditures of $2.4 to $2.7B ● Initiating 2023 Guidance Initiated 2023 non-GAAP diluted NOEPS guidance of $1.50 to $1.57 (consistent with 5-7% annual growth commitment) Expect 2023 capital expenditures of $2.8 to $3.1B The new 5-year growth and investment plan Annual non-GAAP NOEPS growth commitment of 6-8% from 2021 though 2027 Top tier growth projection reflects significantly de-risked financing plan following minority interest sale of NIPSCO to strengthen the balance sheet Extended plan outlines over $15B in regulated investments across six states with constructive regulatory and legislative environments ● ● Regulatory execution continues seeking balanced outcomes for all stakeholders Columbia Gas of Ohio settlement filed in October representing a $68.2 million revenue increase and 9.6% ROE, rates are expected to be implemented in early 2023 NIPSCO Electric rate case filed, Pennsylvania and Maryland rate cases have achieved settlements Columbia Gas of Virginia implemented interim rates on September 28 as its case moves forward Non-GAAP diluted NOEPS* of $0.10 in 3Q22 vs. $0.11 in 3Q21 Reflects continued investment in safety, reliability, customer affordability and sustainability FOCUSED ON ENHANCING SAFETY, RELIABILITY, CUSTOMER AFFORDABILITY AND SUSTAINABILITY NiSource | NYSE: NI | nisource.com | fy in *Diluted Net Operating Earnings Per Share (Non-GAAP). For the GAAP Diluted Earnings Per Share and the reconciliation of GAAP to non-GAAP diluted earnings per share, see Schedule 1 in the appendix to this presentation **Compound Annual Growth Rate 3

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