As of September 09, 2026, the three largest insider holders of NI are Donald Eugene Brown (Evp Chief Innovation Officer, 195.85K shares), Violet Sistovaris (Evp Chief Experience Officer, 165.38K shares), Violet Sistovaris (Evp Chief Experience Officer, 165.38K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Donald Eugene Brown | Evp Chief Innovation Officer | 195,855 | 0 | 195,855 | 10.7% | 07 Mar, 2024 |
| 2 | Violet Sistovaris | Evp Chief Experience Officer | 165,379 | 0 | 165,379 | 9.0% | 01 Mar, 2022 |
| 3 | Shawn Anderson | Evp Cfo | 165,101 | 0 | 165,101 | 9.0% | 03 Mar, 2026 |
| 4 | Michael Luhrs | Evp, Tech, Customer Cco | 120,178 | 0 | 120,178 | 6.6% | 03 Mar, 2026 |
| 5 | Pablo Vegas | Evp, Coo President Utilities | 120,026 | 0 | 120,026 | 6.6% | 01 Mar, 2022 |
| 6 | William Jr. Jefferson | Evp, Chief Op Safety Officer | 98,375 | 0 | 98,375 | 5.4% | 03 Mar, 2026 |
| 7 | Melody Birmingham | Evp Grp President, Utilities | 82,596 | 0 | 82,596 | 4.5% | 04 Mar, 2025 |
| 8 | Melody Birmingham | Evp Grp President, Utilities | 78,527 | 0 | 78,527 | 4.3% | 18 Aug, 2026 |
| 9 | Aristides S Candris | Director | 76,437 | 0 | 76,437 | 4.2% | 25 May, 2023 |
| 10 | Deborah A Henretta | Director | 71,457 | 0 | 71,457 | 3.9% | 14 May, 2025 |
| 11 | Eric L Butler | Director | 67,692 | 0 | 67,692 | 3.7% | 13 May, 2026 |
| 12 | Kimberly S Cuccia | Evp, Gc Corporate Secretary | 62,726 | 0 | 62,726 | 3.4% | 03 Mar, 2026 |
| 13 | Kevin T Kabat | Director | 62,515 | 0 | 62,515 | 3.4% | 14 May, 2025 |
| 14 | Peter Altabef | Director | 56,615 | 0 | 56,615 | 3.1% | 13 May, 2026 |
| 15 | Michael E Jesanis | Director | 52,701 | 0 | 52,701 | 2.9% | 15 Jul, 2026 |
| 16 | Michael Hooper | Svp And President, Nipsco | 50,454 | 0 | 50,454 | 2.8% | 01 Mar, 2024 |
| 17 | Theodore H Jr Bunting | Director | 45,834 | 0 | 45,834 | 2.5% | 14 May, 2025 |
| 18 | Charles Edward Ii Shafer | Svp Chief Safety Officer | 45,238 | 0 | 45,238 | 2.5% | 01 Mar, 2022 |
| 19 | Deborah Hersman | Director | 42,283 | 0 | 42,283 | 2.3% | 14 May, 2025 |
| 20 | Melanie B. Berman | Evp Administration Chro | 35,990 | 0 | 35,990 | 2.0% | 27 May, 2026 |
| 21 | Gunnar Gode | Svp Chief Acctingtax Officer | 33,108 | 0 | 33,108 | 1.8% | 03 Mar, 2026 |
| 22 | Sondra L Barbour | Director | 29,197 | 0 | 29,197 | 1.6% | 13 May, 2026 |
| 23 | Cassandra S. Lee | Director | 28,974 | 0 | 28,974 | 1.6% | 13 May, 2026 |
| 24 | William D Johnson | Director | 28,431 | 0 | 28,431 | 1.6% | 13 May, 2026 |
| 25 | John Mcavoy | Director | 15,777 | 0 | 15,777 | 0.9% | 13 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 14 Aug, 2026 | Melody Birmingham | Evp Grp President, Utilities | Disposed S | 37,509 | $42.40 | $1.59Mn | 78,527 | Direct |
| 13 Jul, 2026 | Michael E Jesanis | Director | Acquired J | 30,190 | $0.00 | $0 | 52,701 | Direct |
| 22 May, 2026 | Melanie B. Berman | Evp Administration Chro | Disposed S | 15,000 | $47.68 | $715.20K | 35,990 | Direct |
| 21 May, 2026 | Lloyd M Yates | Director And President Ceo | Disposed S | 19,905 | $47.73 | $950.07K | 519,557 | Direct |
| 14 May, 2026 | Melody Birmingham | Evp Grp President, Utilities | Disposed S | 10,000 | $47.19 | $471.85K | 117,899 | Direct |
| 20 May, 2026 | Melody Birmingham | Evp Grp President, Utilities | Disposed S | 2,500 | $47.43 | $118.58K | 116,036 | Direct |
| 11 May, 2026 | Theodore H Jr Bunting | Director | Acquired A | 3,807 | $47.03 | $179.04K | 49,932 | Direct |
| 11 May, 2026 | Cassandra S. Lee | Director | Acquired A | 3,807 | $47.03 | $179.04K | 28,974 | Direct |
| 11 May, 2026 | Sondra L Barbour | Director | Acquired A | 3,807 | $47.03 | $179.04K | 29,197 | Direct |
| 11 May, 2026 | John Mcavoy | Director | Acquired A | 3,807 | $47.03 | $179.04K | 15,777 | Direct |
| 11 May, 2026 | Eric L Butler | Director | Acquired A | 3,807 | $47.03 | $179.04K | 67,692 | Direct |
| 11 May, 2026 | William D Johnson | Director | Acquired A | 3,807 | $47.03 | $179.04K | 28,431 | Direct |
| 11 May, 2026 | Peter Altabef | Director | Acquired A | 3,807 | $47.03 | $179.04K | 56,615 | Direct |
| 27 Feb, 2026 | Kimberly S Cuccia | Evp, Gc Corporate Secretary | Acquired A | 30,744 | $47.30 | $1.45Mn | 77,928 | Direct |
| 27 Feb, 2026 | Michael Luhrs | Evp, Tech, Customer Cco | Acquired A | 61,811 | $47.30 | $2.92Mn | 151,375 | Direct |
| 27 Feb, 2026 | Shawn Anderson | Evp Cfo | Acquired A | 32,551 | $47.30 | $1.54Mn | 169,393 | Direct |
| 27 Feb, 2026 | Lloyd M Yates | Director And President Ceo | Acquired A | 275,962 | $47.30 | $13.05Mn | 672,010 | Direct |
| 27 Feb, 2026 | Gunnar Gode | Svp Chief Acctingtax Officer | Acquired A | 6,420 | $47.30 | $303.67K | 35,677 | Direct |
| 27 Feb, 2026 | Melody Birmingham | Evp Grp President, Utilities | Acquired A | 71,094 | $47.30 | $3.36Mn | 162,434 | Direct |
| 27 Feb, 2026 | William Jr. Jefferson | Evp, Chief Op Safety Officer | Acquired A | 60,623 | $47.30 | $2.87Mn | 127,357 | Direct |