 MERRILLVILLE, Ind., Aug. 4, 2021 PRNewswire -- NiSource Inc. NYSE: NI today announced, on a GAAP basis, net income available to common shareholders for the three months ended June 30, 2021 of 46.5 million, or 0.11 diluted earnings per share, compared to net loss available to common shareholders of 18.5 million, or 0.05 diluted loss per share, for the same period of 2020. 