NISOURCE INC. 4

Melody Birmingham, EVP & Group President, Utilities of NiSource Inc., sold 37,509.173 shares of NI common stock for about $1.59 million and now holds 78,527.151 shares directly.

On August 14, 2026, Melody Birmingham, EVP & Group President, Utilities of NiSource Inc., sold 37,509.173 shares of NiSource common stock in an open-market transaction at a weighted average price of approximately $42.40 per share, for total proceeds of about $1.59 million. The sale was executed in multiple trades within a narrow price range of $42.39 to $42.42 per share. Following this disposition, Birmingham’s direct ownership in NiSource common stock stands at 78,527.151 shares, which, using the reported transaction price as a proxy, represents an equity stake valued at roughly $3.33 million. The filing notes the availability of detailed trade-level pricing information upon request, indicating that the activity reflects standard market sales rather than a structured or derivative-related transaction.

Filing Facts

CIK

1111711

Ticker

NI

Form

4

Source Type

sec

Accession

0001111711-26-000089

Alert Tier

7