NiSource Officer William Jefferson Jr. Files Form 144 to Sell $1.78M in Stock

Executive Summary

On October 30, 2026, William Jefferson Jr., an Officer at NiSource Inc. ($NI), submitted a Form 144 notice disclosing an intent to sell 40,000 shares of common stock through Fidelity Brokerage Services LLC. The aggregate market value of the proposed transaction is $1,782,400.00, representing an estimated price of approximately $44.56 per share.

Transaction Details

• Securities to be Sold: 40,000 Common shares.
• Aggregate Market Value: $1,782,400.00.
• Origin of Shares: The shares were acquired through restricted stock vestings as compensation from the issuer (382 shares acquired on February 28, 2025, and 39,618 shares acquired on February 27, 2026).
• Recent Sales Activity: The filer reported no other securities sold during the past three months.

Market Impact & Context

With 479,668,642 common shares outstanding, the 40,000 shares proposed for sale represent less than 0.01% of total equity outstanding. The transaction represents standard equity compensation liquidity and is unlikely to have a material impact on market liquidity or share price.