NiSource Inc. (NI) Shareholders & Insider Trades
NiSource shareholders at a glance
The largest holder of NiSource stock is BlackRock Advisors LLC, with 43.9 million shares (9.15% of the company), worth about $1.80 billion as of September 25, 2026. The 10 largest holders together own 44.4%.
In Q2 2026, 936 institutional holdings reports listed 489.0 million shares worth $22.50 billion, up 7.5% in shares from Q1 2026.
Insiders reported 64 transactions in the last two years: 9 sales worth $3.48 million and no purchases. The newest one on file is from May 11, 2026 (Lee Cassandra S, Director).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 11, 2026.
NiSource Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest NiSource shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 43.9 million | 9.15% | $1.8B |
| Vanguard Capital Management LLC | 31.4 million | 6.54% | $1.3B |
| T. Rowe Price Investment Management, Inc. | 29.8 million | 6.22% | $1.2B |
| State Street Corporation | 27.6 million | 5.76% | $1.1B |
| Vanguard Portfolio Management LLC | 27.1 million | 5.64% | $1.1B |
| Geode Capital Management LLC | 12.9 million | 2.69% | $529.0M |
| DWS Investment Management Americas, Inc. | 12.1 million | 2.52% | $494.0M |
| Fidelity Management & Research Co. LLC | 10.1 million | 2.11% | $414.0M |
| Jennison Associates LLC | 9.2 million | 1.93% | $378.0M |
| BlackRock Life Ltd. | 8.9 million | 1.85% | $362.0M |
As of September 25, 2026.
NiSource institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 936 | 489.0 million | $22.5B |
| Q1 2026 | 901 | 455.0 million | $21.2B |
| Q4 2025 | 854 | – | $20.9B |
| Q3 2025 | 812 | 454.0 million | $19.6B |
| Q2 2025 | 796 | 459.0 million | $18.5B |
| Q1 2025 | 819 | 447.0 million | $17.9B |
| Q4 2024 | 756 | 452.0 million | $16.6B |
| Q3 2024 | 705 | 461.0 million | $16.0B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
NiSource insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Lee Cassandra S | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Jesanis Michael E | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Kabat Kevin T | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Mcavoy John | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Barbour Sondra L | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Hersman Deborah A. P. | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Butler Eric L. | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Altabef Peter A | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Bunting Theodore H Jr | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Henretta Deborah Ann | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Johnson William D | May 11, 2026 | Director | Stock Award(Grant) at price 47.03 per share. | $179,043 |
| Anderson Shawn | Feb 27, 2026 | Chief Financial Officer | Stock Award(Grant) at price 47.30 per share. | $2.7M |
Newest 12 of 64 insider transactions in the last two years.
Questions and answers
Who owns the most NiSource stock?
BlackRock Advisors LLC, with 9.15% of the company (as of September 25, 2026). Next: Vanguard Capital Management LLC (6.54%) and T. Rowe Price Investment Management, Inc. (6.22%).
How many institutions own NiSource stock?
936 institutional holdings reports listed NiSource shares in Q2 2026, 489.0 million shares in all worth $22.50 billion.
Are NiSource insiders buying or selling the stock?
In the last two years insiders reported 9 sales and no purchases (64 transactions in all); the newest on file is from May 11, 2026.
