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NISOURCE INC.

For the period ended Sep 30, 2026. Filed Oct 28, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Oct 28, 2026

NI$45.29+0.5%Stored close · as of Nov 10, 2026

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Condensed Statements of Consolidated Comprehensive Income (unaudited)

Three Months EndedSeptember 30,Nine Months EndedSeptember 30,
(in millions, net of taxes)2026202520262025
Net Income$139.0$107.0$732.1$734.2
Other comprehensive (loss) income:
Net unrealized (loss) gain on available-for-sale debt securities(1)(4.3)1.3(4.8)3.1
Reclassification adjustment for cash flow hedges(2)(0.1)(0.1)(0.3)(0.3)
Unrecognized pension and OPEB benefit (costs)(3)0.314.0(2.3)14.6
Total other comprehensive (loss) income(4.1)15.2(7.4)17.4
Comprehensive Income$134.9$122.2$724.7$751.6

(1)Net unrealized (loss) gain on available-for-sale debt securities, net of $1.2 million tax benefit and $0.3 million tax expense in the third quarter of 2026 and 2025, respectively, and net of $1.5 million tax benefit and $0.8 million tax expense for the nine months ended 2026 and 2025, respectively.

(2)Reclassification adjustment for cash flow hedges, net ofzero tax benefit and $0.1 million tax benefit in the third quarter of 2026 and 2025, respectively, and net of $0.1 million tax benefit and $0.2 million tax benefit for the nine months ended 2026 and 2025, respectively.

(3)Unrecognized pension and OPEB benefit (costs), net of $0.1 million tax expense and $4.6 million tax expense in the third quarter of 2026 and 2025, respectively, and net of $1.5 million tax expense and $4.8 million tax expense for the nine months ended 2026 and 2025, respectively.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.