NISOURCE INC.
For the period ended Dec 31, 2025. Filed Feb 11, 2026.
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FY2025 · Filed Feb 11, 2026
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Results and Discussion of Operations
Presentation of Segment Information
Columbia Operations aggregates the results of the fully regulated and wholly owned subsidiaries of NiSource Gas Distribution Group, Inc. Each Columbia distribution company is an operating segment which we aggregate to form the Columbia Operations reportable segment. NIPSCO Operations aggregates the results of NIPSCO Holdings I, and its majority-owned subsidiaries, including NIPSCO, which has both regulated gas and electric operations in northern Indiana. The remainder of our operations, which are not significant enough on a stand-alone basis to warrant treatment as a reportable segment, are presented as "Corporate and Other" within the Notes to the Condensed Consolidated Financial Statements (unaudited) and primarily are comprised of interest expense on holding company debt, unallocated corporate costs and activities and new business development costs associated with GenCo.
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