Melody Birmingham - 21 Jan 2026 Form 4 Insider Report for NISOURCE INC. (NI)

Role: EVP & Grp President, Utilities
Signature: /s/ Ashley Bancroft, Attorney-in-Fact
Issuer symbol: NI
Transactions as of: 21 Jan 2026
Net transactions value: +$320,017
Form type: 4
Filing time: 23 Jan 2026, 16:19:39 UTC
Previous filing: 04 Jun 2025
Next filing: 10 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
BIRMINGHAM MELODY	EVP & Grp President, Utilities	801 E. 86TH AVENUE, MERRILLVILLE	/s/ Ashley Bancroft, Attorney-in-Fact	23 Jan 2026	0001738248

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	NI	Common Stock	Award	$320,017	+7,308	+8.7%	$43.79	90,985	21 Jan 2026	Direct	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 28, 2029, provided that the reporting person is continuously employed by the Company through and including that date.
F2	Includes shares acquired through dividend reinvestments.
F3	Due to an administrative error, there is a duplicate CIK number for this Reporting Person. All future filings will be made under this CIK (0001738248).