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Institutional ownership intelligence
Schedule 13G/A

NI Schedule 13G/A filing by T. Rowe Price Investment Management

T. Rowe Price Investment Management reported beneficial ownership of 50.3M shares, representing 12% of NISOURCE INC in this filing.

FiledDec 5, 2025
Ownership dateNov 30, 2025
Reported shares50.3M
Reported ownership12%
Ownership details

Voting and dispositive power reported in the filing

These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.

Sole voting power 47.1M
Shared voting power 50.3M
Sole dispositive power 50.3M
Shared dispositive power 50.3M
Compared with the prior filing

How the reported position changed

This compares the current filing with the previous tracked Schedule 13 filing from the same reporting CIK for NI. A change between filings does not by itself establish when shares were bought or sold.

Previous filingAug 14, 2025
Reported share change+9,615,070
Ownership percentage change0 pts
Previous filingThis filing
Reported shares40.7M50.3M
Reported ownership12%12%
Price context

Price dates alongside the ownership filing

Price data provides market context around the disclosure. It does not identify the filer’s actual transaction price.

Close near filing date$42.00as of Dec 5, 2025
Latest tracked price$44.53as of Aug 4, 2026
Source

Original filing and accession

Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.

Reporting filer
T. Rowe Price Investment Management
CIK
CIK0001897612
Accession
0001897612-25-000566
Form
Schedule 13G/A
Read the filing in context

Understand what a Schedule 13 filing does—and does not—tell you.