NiSource Officer Files Form 144 to Sell 6,500 Shares Under 10b5-1 Plan

Executive Summary

On November 5, 2026, Shawn Anderson, an Officer of NiSource Inc. ($NI), filed a Form 144 notice proposing the sale of 6,500 shares of common stock with an estimated aggregate market value of $296,270.00 (approximately $45.58 per share). The proposed sale is executed via Fidelity Brokerage Services LLC pursuant to a Rule 10b5-1 trading plan adopted on May 14, 2026.

Transaction Details

• Securities to be Sold: 6,500 common shares.
• Aggregate Market Value: $296,270.00.
• Acquisition Origin: The shares were originally acquired on February 27, 2026, via restricted stock vesting as part of executive compensation.
• Trading Plan: The filing notes a Rule 10b5-1 plan adoption date of May 14, 2026.
• Past 3 Months Activity: The filer previously sold 6,500 shares on October 30, 2026, generating gross proceeds of $292,500.00.

Market Impact & Significance

Trading significance is evaluated as Low. The 6,500 shares represent an infinitesimal fraction (<0.002%) of NiSource's 479,668,642 total shares outstanding. Furthermore, the sale is being conducted under a pre-established Rule 10b5-1 plan from vested equity compensation, indicating routine personal financial planning rather than an opportunistic sentiment shift regarding company prospects.