As of September 29, 2026, the three largest insider holders of NI are Lloyd M Yates (Director And President Ceo, 519.56K shares), Donald Eugene Brown (Evp Chief Innovation Officer, 195.85K shares), Violet Sistovaris (Evp Chief Experience Officer, 165.38K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Lloyd M Yates | Director And President Ceo | 519,557 | 0 | 519,557 | 21.9% | 26 May, 2026 |
| 2 | Donald Eugene Brown | Evp Chief Innovation Officer | 195,855 | 0 | 195,855 | 8.3% | 07 Mar, 2024 |
| 3 | Violet Sistovaris | Evp Chief Experience Officer | 165,379 | 0 | 165,379 | 7.0% | 01 Mar, 2022 |
| 4 | Shawn Anderson | Evp Cfo | 165,101 | 0 | 165,101 | 7.0% | 03 Mar, 2026 |
| 5 | Michael Luhrs | Evp, Tech, Customer Cco | 120,178 | 0 | 120,178 | 5.1% | 03 Mar, 2026 |
| 6 | Pablo Vegas | Evp, Coo President Utilities | 120,026 | 0 | 120,026 | 5.1% | 01 Mar, 2022 |
| 7 | William Jr. Jefferson | Evp, Chief Op Safety Officer | 98,375 | 0 | 98,375 | 4.2% | 03 Mar, 2026 |
| 8 | Melody Birmingham | Evp Grp President, Utilities | 82,596 | 0 | 82,596 | 3.5% | 04 Mar, 2025 |
| 9 | Melody Birmingham | Evp Grp President, Utilities | 78,527 | 0 | 78,527 | 3.3% | 18 Aug, 2026 |
| 10 | Deborah A Henretta | Director | 77,152 | 0 | 77,152 | 3.3% | 13 May, 2026 |
| 11 | Aristides S Candris | Director | 76,437 | 0 | 76,437 | 3.2% | 25 May, 2023 |
| 12 | Eric L Butler | Director | 67,692 | 0 | 67,692 | 2.9% | 13 May, 2026 |
| 13 | Kevin T Kabat | Director | 66,456 | 0 | 66,456 | 2.8% | 13 May, 2026 |
| 14 | Kimberly S Cuccia | Evp, Gc Corporate Secretary | 62,726 | 0 | 62,726 | 2.6% | 03 Mar, 2026 |
| 15 | Peter Altabef | Director | 56,615 | 0 | 56,615 | 2.4% | 13 May, 2026 |
| 16 | Michael E Jesanis | Director | 52,701 | 0 | 52,701 | 2.2% | 15 Jul, 2026 |
| 17 | Michael Hooper | Svp And President, Nipsco | 50,454 | 0 | 50,454 | 2.1% | 01 Mar, 2024 |
| 18 | Theodore H Jr Bunting | Director | 49,932 | 0 | 49,932 | 2.1% | 13 May, 2026 |
| 19 | Deborah Hersman | Director | 47,200 | 0 | 47,200 | 2.0% | 13 May, 2026 |
| 20 | Charles Edward Ii Shafer | Svp Chief Safety Officer | 45,238 | 0 | 45,238 | 1.9% | 01 Mar, 2022 |
| 21 | Melanie B. Berman | Evp Administration Chro | 35,990 | 0 | 35,990 | 1.5% | 27 May, 2026 |
| 22 | Gunnar Gode | Svp Chief Acctingtax Officer | 33,108 | 0 | 33,108 | 1.4% | 03 Mar, 2026 |
| 23 | Sondra L Barbour | Director | 29,197 | 0 | 29,197 | 1.2% | 13 May, 2026 |
| 24 | Cassandra S. Lee | Director | 28,974 | 0 | 28,974 | 1.2% | 13 May, 2026 |
| 25 | William D Johnson | Director | 28,431 | 0 | 28,431 | 1.2% | 13 May, 2026 |
| 26 | John Mcavoy | Director | 15,777 | 0 | 15,777 | 0.7% | 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 | Eric L Butler | Director | Acquired A | 3,807 | $47.03 | $179.04K | 67,692 | Direct |
| 11 May, 2026 | Peter Altabef | Director | Acquired A | 3,807 | $47.03 | $179.04K | 56,615 | Direct |
| 11 May, 2026 | William D Johnson | Director | Acquired A | 3,807 | $47.03 | $179.04K | 28,431 | Direct |
| 11 May, 2026 | Deborah Hersman | Director | Acquired A | 3,807 | $47.03 | $179.04K | 47,200 | Direct |
| 11 May, 2026 | Kevin T Kabat | Director | Acquired A | 3,807 | $47.03 | $179.04K | 66,456 | Direct |
| 11 May, 2026 | Michael E Jesanis | Director | Acquired A | 3,807 | $47.03 | $179.04K | 22,482 | Direct |
| 11 May, 2026 | Cassandra S. Lee | Director | Acquired A | 3,807 | $47.03 | $179.04K | 28,974 | Direct |
| 11 May, 2026 | John Mcavoy | Director | Acquired A | 3,807 | $47.03 | $179.04K | 15,777 | Direct |
| 11 May, 2026 | Sondra L Barbour | Director | Acquired A | 3,807 | $47.03 | $179.04K | 29,197 | Direct |
| 11 May, 2026 | Theodore H Jr Bunting | Director | Acquired A | 3,807 | $47.03 | $179.04K | 49,932 | Direct |
| 11 May, 2026 | Deborah A Henretta | Director | Acquired A | 3,807 | $47.03 | $179.04K | 77,152 | 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 | Melody Birmingham | Evp Grp President, Utilities | Acquired A | 71,094 | $47.30 | $3.36Mn | 162,434 | Direct |
| 27 Feb, 2026 | Gunnar Gode | Svp Chief Acctingtax Officer | Acquired A | 6,420 | $47.30 | $303.67K | 35,677 | Direct |