| 2026-08-18 | 8-K | Form 8-K, Item 8.01 |
| 2026-08-05 | Transcript | Q2 FY26 earnings call transcript |
| 2026-08-05 | Press release | NiSource announces second quarter results · 2026 |
| 2026-08-05 | 8-K | Form 8-K, Item 2.02 results |
| 2026-08-05 | 10-Q | Form 10-Q for the quarter ended Jun 30 |
| 2026-07-10 | Deck | Investor Deck |
| 2026-05-18 | 8-K | Form 8-K, Item 8.01 |
| 2026-05-12 | 8-K | Form 8-K, Item 5.07 |
| 2026-05-06 | Deck | SUPPLEMENTAL SLIDES 1Q 2026 RESULTS |
| 2026-05-06 | Press release | NiSource announces first quarter results · 2026 |
| 2026-05-06 | Press release | NiSource to Release First Quarter 2026 Financial Results and Host Conference Call on May 6 |
| 2026-05-06 | Deck | NiSource Fact Sheet |
| 2026-05-06 | 8-K | Form 8-K, Item 2.02 results |
| 2026-05-06 | 10-Q | Form 10-Q for the quarter ended Mar 31 |
| 2026-05-06 | Transcript | Q1 FY26 earnings call transcript |
| 2026-03-30 | Proxy | Definitive proxy statement |
| 2026-02-11 | Deck | Earnings presentation · FY 2025 · Feb 2026 |
| 2026-02-11 | Press release | Press release · FY 2025 · Feb 2026 |
| 2026-02-11 | Press release | NiSource to Release Full-Year 2025 Financial Results and Host Conference Call on February 11 |
| 2026-02-11 | 8-K | Form 8-K, Item 2.02 results |
| 2026-02-11 | 10-K | Annual report on Form 10-K, FY25 |
| 2026-02-11 | Transcript | Q4 FY25 earnings call transcript |
| 2025-12-11 | 8-K | Form 8-K, Item 1.01 |
| 2025-11-07 | 8-K | Form 8-K, Item 8.01 |
| 2025-10-31 | 8-K | Form 8-K, Item 1.01 |
| 2025-10-29 | Deck | Earnings presentation · Q3 2025 · Oct 2025 |
| 2025-10-29 | Press release | Press release · Q3 2025 · Oct 2025 |
| 2025-10-29 | 8-K | Form 8-K, Item 2.02 results |
| 2025-10-29 | 10-Q | Form 10-Q for the quarter ended Sep 30 |
| 2025-10-29 | Transcript | Q3 FY25 earnings call transcript |
| 2025-09-22 | 8-K | Form 8-K, Item 7.01 |
| 2025-08-06 | Deck | Earnings presentation · Q2 2025 · Aug 2025 |
| 2025-08-06 | Press release | Press release · Q2 2025 · Aug 2025 |
| 2025-08-06 | 8-K | Form 8-K, Item 2.02 results |
| 2025-08-06 | 10-Q | Form 10-Q for the quarter ended Jun 30 |
| 2025-06-27 | 8-K | Form 8-K, Item 8.01 |
| 2025-05-13 | 8-K | Form 8-K, Item 5.07 |
| 2025-05-07 | Deck | Earnings presentation · Q1 2025 · May 2025 |
| 2025-05-07 | Press release | Press release · Q1 2025 · May 2025 |
| 2025-05-07 | 8-K | Form 8-K, Item 2.02 results |