Quick Answer
NISOURCE INC. reported Shares Outstanding of 478.43 million shares for fiscal year 2025.
NISOURCE INC. Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 478.43M | +1.8% |
| 2024 | 469.82M | +5.0% |
| 2023 | 447.38M | +8.6% |
| 2022 | 412.14M | +1.7% |
| 2021 | 405.30M | +3.5% |
| 2020 | 391.76M | +2.5% |
| 2019 | 382.14M | +2.6% |
| 2018 | 372.36M | +10.5% |
| 2017 | 337.02M | +4.3% |
| 2016 | 323.16M | +1.3% |
| 2015 | 319.11M | +1.0% |
| 2014 | 316.04M | +0.8% |
| 2013 | 313.68M | +1.1% |
| 2012 | 310.28M | +10.1% |
| 2011 | 281.85M | +1.1% |
| 2010 | 278.86M | +0.8% |
| 2009 | 276.64M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | 477.14M | +0.0% | +1.3% |
| June 30, 2025 | 470.78M | +0.0% | +0.0% |
| March 31, 2025 | 470.62M | +5.0% | +0.2% |
| December 31, 2024 | 469.82M | +5.0% | -1.5% |
| September 30, 2024 | 477.14M | +15.4% | +1.3% |
| June 30, 2024 | 470.78M | +14.0% | +5.0% |
| March 31, 2024 | 448.20M | +8.5% | +0.2% |
| December 31, 2023 | 447.38M | +8.6% | +8.2% |
- NISOURCE INC. showed an increase of +1.8% in Shares Outstanding compared to the prior fiscal year.
- Over the 2009–2025 period, NISOURCE INC.’s shares outstanding has grown by 72.9% (from 276.64 million shares to 478.43 million shares).
- The most recent figure is from NISOURCE INC.’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 11, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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