Achieved 2024 non-GAAP adjusted EPS above guidance range
Raising 2025 non-GAAP adjusted EPS guidance
Reaffirming expected annual 6%-8% 2025-2029 non-GAAP adjusted EPS growth

NiSource Inc. (NYSE:NI) today announced, on a GAAP basis, net income available to common shareholders for the year ended December 31, 2024, of $739.7 million, or $1.62 of earnings per diluted share, compared to net income available to common shareholders of $661.7 million, or $1.48 of earnings per diluted share, for the same period of 2023.

NiSource also reported full-year 2024 non-GAAP adjusted net income available to common shareholders of $798.6 million, or $1.75 of adjusted earnings per share ("EPS") compared to non-GAAP adjusted net income available to common shareholders of $716.3 million, or $1.60 of adjusted EPS, for the same period of 2023. Schedule 1 of this press release contains a complete reconciliation of GAAP measures to non-GAAP measures. **

NiSource is raising 2025 non-GAAP adjusted EPS guidance to $1.85-$1.89. The base capital expenditure plan is increased to $19.4 billion, a $100 million increase versus the prior $19.3 billion. This is expected to result in 8%-10% rate base growth and non-GAAP adjusted EPS growth of 6%-8% annually for the 2025-2029 period.

"We continue our track record of strong financial growth achieving 2024 non-GAAP EPS of $1.75, delivering an 8.5% 3-year compound annualized growth rate," said NiSource President and CEO, Lloyd Yates. "Our on-going focus to deliver great value for our customers is evidenced by high customer satisfaction results. As we look back at 2024 and the many accomplishments of our team, I'd like to express my gratitude to our employees and suppliers; their continued contributions and commitment have created significant value for our regulators, customers, shareholders, and all our stakeholders."

**Non-GAAP Disclosure Statement

Beginning with the first quarter of 2024, NiSource Inc. changed its disclosure of non-GAAP results and guidance for net operating earnings available to common shareholders to adjusted net income available to common shareholders and for net operating EPS to adjusted EPS to better align with the presentation used by many companies to report their non-GAAP results. The change reflects a name change only and the calculations of each of these non-GAAP metrics remains consistent with the historical calculations

This press release includes financial results and guidance for NiSource with respect to adjusted net income available to common shareholders and adjusted EPS, which are non-GAAP financial measures as defined by the SEC. The company includes these measures because management believes they permit investors to view the company's performance using the same tools that management uses and to better evaluate the company's ongoing business performance. With respect to guidance on adjusted EPS, NiSource reminds investors that it does not provide a GAAP equivalent of its guidance on adjusted net income available to commons shareholders due to the impact of unpredictable factors such as fluctuations in weather, impact of asset sales and impairments and other unusual or infrequent items included in the comparable GAAP measures. The company is not able to estimate the impact of such factors on the comparable GAAP measures and, as such, is not providing guidance on a GAAP basis. In addition, the company is not able to provide a reconciliation of its non-GAAP adjusted EPS guidance to the comparable GAAP equivalents without unreasonable efforts.

Additional Information

Additional information for the year ended December 31, 2024, is available on the Investors section of www.nisource.com and includes segment and financial information and a presentation. The company alerts investors that it intends to use the Investors section of its website www.nisource.com and as well as the company's social media channels to disseminate important information about the company to its investors. Investors are advised to look at NiSource's website and social media channels for future important information about the company.

About NiSource

NiSource Inc. (NYSE:NI) is one of the largest fully-regulated utility companies in the United States, serving approximately 3.3 million natural gas customers and 500,000 electric customers across six states through its local Columbia Gas and NIPSCO brands. The mission of our approximately 7,700 employees is to deliver safe, reliable energy that drives value to our customers. NiSource is a member of the Dow Jones Sustainability - North America Index and is on Forbes lists of America's Best Employers for Women and Diversity. Learn more about NiSource's record of leadership in sustainability, investments in the communities it serves and how we live our vision to be an innovative and trusted energy partner at www.NiSource.com. NI-F

The content of our website is not incorporated by reference into this document or any other report or document NiSource files with the Securities and Exchange Commission ("SEC").

Forward-Looking Statements

This Press Release contains "forward-looking statements," within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Investors and prospective investors should understand that many factors govern whether any forward-looking statement contained herein will be or can be realized. Any one of those factors could cause actual results to differ materially from those projected. Forward-looking statements in this press release include, but are not limited to, statements concerning our guidance on adjusted EPS, plans, strategies, objectives, expected performance, 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 other than statements of historical fact. Expressions of future goals and expectations and similar expressions, including "may," "will," "should," "could," "would," "aims," "seeks," "expects," "plans," "anticipates," "intends," "believes," "estimates," "predicts," "potential," "targets," "forecast," and "continue," reflecting something other than historical fact are intended to identify forward-looking statements. All forward-looking statements are based on assumptions that management believes to be reasonable; however, there can be no assurance that actual results will not differ materially.

Factors that could cause actual results to differ materially from the projections, forecasts, estimates and expectations discussed in this Press Release include, among other things: our ability to execute our business plan or growth strategy, including utility infrastructure investments, or business opportunities, such as data center development and related generation sources and transmission capabilities to meet potential load growth; our ability to manage data center growth in our service territories; potential incidents and other operating risks associated with our business; our ability to work successfully with our third-party investors; our ability to adapt to, and manage costs related to, advances in technology, including alternative energy sources and changes in laws and regulations; our increased dependency on technology; impacts related to our aging infrastructure; our ability to obtain sufficient insurance coverage and whether such coverage will protect us against significant losses; the success of our electric generation strategy; construction risks and supply risks; fluctuations in demand from residential and commercial customers; fluctuations in the price of energy commodities and related transportation costs or an inability to obtain an adequate, reliable and cost-effective fuel supply to meet customer demand; our ability to attract, retain or re-skill a qualified, diverse workforce and maintain good labor relations; our ability to manage new initiatives and organizational changes; the performance and quality of third-party suppliers and service providers; our ability to manage the financial and operational risks related to achieving our carbon emission reduction goals, including our Net Zero Goal (as defined below), including any future associated impact from business opportunities such as data center development as those opportunities evolve; potential cybersecurity attacks or security breaches; increased requirements and costs related to cybersecurity; the actions of activist stockholders; any damage to our reputation; the impacts of natural disasters, potential terrorist attacks or other catastrophic events; the physical impacts of climate change and the transition to a lower carbon future; our debt obligations; any changes to our credit rating or the credit rating of certain of our subsidiaries; adverse economic and capital market conditions, including increases in inflation or interest rates, recession, or changes in investor sentiment; economic regulation and the impact of regulatory rate reviews; our ability to obtain expected financial or regulatory outcomes; economic conditions in certain industries; the reliability of customers and suppliers to fulfill their payment and contractual obligations; the ability of our subsidiaries to generate cash; pension funding obligations; potential impairments of goodwill; the outcome of legal and regulatory proceedings, investigations, incidents, claims and litigation; compliance with changes in, or new interpretations of applicable laws, regulations and tariffs; the cost of compliance with environmental laws and regulations and the costs of associated liabilities; changes in tax laws or the interpretation thereof; and other matters set forth in Item 1, "Business," Item 1A, "Risk Factors" and Part II, Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations," of our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, some of which risks are beyond our control. In addition, the relative contributions to profitability by each business segment, and the assumptions underlying the forward-looking statements relating thereto, may change over time.

All forward-looking statements are expressly qualified in their entirety by the foregoing cautionary statements. We undertake no obligation to, and expressly disclaim any such obligation to, update or revise any forward-looking statements to reflect changed assumptions, the occurrence of anticipated or unanticipated events or changes to the future results over time or otherwise, except as required by law.

Schedule 1 - Reconciliation of Consolidated Net Income Available to Common Shareholders to Adjusted Net Income Available to Common Shareholders (Non-GAAP) (unaudited)

	Three Months Ended December 31,									Twelve Months Ended December 31,
	Three Months Ended December 31,									Twelve Months Ended December 31,
(in millions, except per share amounts)		2024			2023			2022			2024			2023			2022
GAAP Net Income Available to Common Shareholders	$	223.9		$	225.6		$	230.8		$	739.7		$	661.7		$	749.0
Adjustments to Operating Income:
Operating Revenues:
Weather - compared to normal⁽¹⁾		9.8			13.4			(3.2	)		60.4			60.6			(24.9	)
FAC adjustment⁽²⁾		—			—			—			—			—			8.0
NiSource Next initiative⁽³⁾		—			—			—			—			—			3.3
Massachusetts Business related amounts⁽⁴⁾		—			—			—			—			—			(105.0	)
Total adjustments to operating income		9.8			13.4			(3.2	)		60.4			60.6			(118.6	)
Other Income (Deductions):
Interest rate swap settlement gain		—			—			(10.0	)		—			—			(10.0	)
Income Taxes:
Tax effect of above items⁽⁵⁾		(2.5	)		(3.3	)		3.4			(15.5	)		(15.8	)		27.8
Preferred Dividends:
Preferred dividends redemption premium⁽⁶⁾		—			3.6			—			14.0			9.8			—
Total adjustments to net income		7.3			13.7			(9.8	)		58.9			54.6			(100.8	)
Adjusted Net Income Available to Common Shareholders	$	231.2		$	239.3		$	221.0		$	798.6		$	716.3		$	648.2
Diluted Average Common Shares		469.9			449.3			445.9			456.0			447.9			442.7
GAAP Diluted Earnings Per Share⁽⁷⁾	$	0.47		$	0.50		$	0.52		$	1.62		$	1.48		$	1.70
Adjustments to diluted earnings per share		0.02			0.03			(0.02	)		0.13			0.12			(0.23	)
Adjusted Earnings Per Share	$	0.49		$	0.53		$	0.50		$	1.75		$	1.60		$	1.47

⁽¹⁾Represents the variance between actual and normal weather. Beginning in 2024, the adjustment for NIPSCO Operations excludes the impact of non-controlling interest.

⁽²⁾Represents fuel costs deemed over-collected from customers through the FAC mechanism and ordered to be refunded to customers.

⁽³⁾Represents incremental severance and third-party consulting costs incurred in connection with the NiSource Next initiative.

⁽⁴⁾Represents proceeds from a property insurance settlement related to the Greater Lawrence Incident.

⁽⁵⁾Represents income tax expense calculated using the statutory tax rates for legal entity.

⁽⁶⁾Represents the difference between the carrying value on the redemption date of the Series B Preferred Stock and the total amount of consideration paid to redeem, net of the fair value of common shares issued during 2024.

⁽⁷⁾GAAP Diluted Earnings Per Share includes the effects of income allocated to participating securities and adds back the dilutive effect of Equity Units in the prior year. Please refer to Note 5, "Earnings Per Share," within the Company's Annual Report on Form 10-K for the period ended December 31, 2024.

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Media

Kristen King

Finance Communications

(419) 787-1314

kking@nisource.com

Investors

Christopher Turnure

Investor Relations

(614) 404-9426

cturnure@nisource.com

NiSource Announces Full-Year 2024 Results