NISOURCE INC. — Director's Dealing 2026

Mar 3, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: NISOURCE INC. (NI)
CIK: 0001111711
Period of Report: 2026-02-27

Reporting Person: Yates Lloyd M (Director, Director and President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-27	Common Stock	A	275962	$47.30	Acquired	672010.483	Direct
2026-02-27	Common Stock	F	117285	$47.30	Disposed	554725.483	Direct
2026-02-27	Common Stock	F	15433	$47.30	Disposed	539292.483	Direct

Footnotes

F1: Vesting of non-derivative performance stock units granted in 2023, which are exempt from liability under Section 16(b) of the Securities Exchange Act pursuant to rule 16b-3(d).

F2: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the vesting of the performance stock units above.

F3: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the vesting of the 2023 Restricted Stock Unit award.

F4: This amount includes RSUs received pursuant to the dividend equivalent provisions of his director RSU awards from 2020 and 2021, and which are subject to the same vesting conditions as the underlying RSUs.

F5: Includes shares acquired through the NiSource Inc. Employee Stock Purchase Plan.