MERRILLVILLE, Ind.–(BUSINESS WIRE)–NiSource Inc. (NYSE: NI) today announced, on a GAAP basis, net income available to common shareholders for the quarter ended June 30, 2026 of $45.5 million, or $0.09 of earnings per diluted share, compared to net income available to common shareholders of $102.2 million, or $0.22 of earnings per diluted share, for the same period of 2025. For the six months ended June 30, 2026, on a GAAP basis, NiSource’s net income available to common shareholders was $556.