NISOURCE INC. (NI) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-07-13 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: NISOURCE INC. (NI) CIK: 0001111711 --- Reporting Owner --- Name: Jesanis Michael E CIK: 0001434733 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-07-13 | Code: J (Other acquisition/disposition) Shares: +30,189.569 | Price: $0.00 Shares Owned After: 52,700.791 | Ownership: D (Direct) Footnotes: [F1] Transfer of shares from indirectly held to directly held, which transfer is exempt from Section 16 reporting under Rule 16a-13. [F2] This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs. --- Footnotes (Complete Index) --- F1: Transfer of shares from indirectly held to directly held, which transfer is exempt from Section 16 reporting under Rule 16a-13. F2: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs. --- Signature --- /s/ /s/ Ashley Bancroft, Attorney-in-Fact (2026-07-15)