NiSource Shares Outstanding 2012-2026 | NI

NiSource shares outstanding history from 2012 to 2026. Shares outstanding can be defined as the number of shares held by shareholders (including insiders) assuming conversion of all convertible debt, securities, warrants and options. This metric excludes the company's treasury shares.
  • NiSource shares outstanding for the quarter ending June 30, 2026 were 0.481B, a 1.93% increase year-over-year.
  • NiSource 2025 shares outstanding were 0.475B, a 4.06% increase from 2024.
  • NiSource 2024 shares outstanding were 0.456B, a 1.81% increase from 2023.
  • NiSource 2023 shares outstanding were 0.448B, a 1.17% increase from 2022.
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NiSource Annual Shares Outstanding
(Millions of Shares)
2025 475
2024 456
2023 448
2022 443
2021 417
2020 384
2019 376
2018 357
2017 331
2016 324
2015 320
2014 317
2013 314
2012 300
2011 288
NiSource Quarterly Shares Outstanding
(Millions of Shares)
2026-06-30 481
2026-03-31 481
2025-12-31 475
2025-09-30 474
2025-06-30 472
2025-03-31 473
2024-12-31 456
2024-09-30 455
2024-06-30 450
2024-03-31 449
2023-12-31 448
2023-09-30 448
2023-06-30 447
2023-03-31 447
2022-12-31 443
2022-09-30 443
2022-06-30 440
2022-03-31 441
2021-12-31 417
2021-09-30 430
2021-06-30 423
2021-03-31 394
2020-12-31 384
2020-09-30 384
2020-06-30 384
2020-03-31 384
2019-12-31 376
2019-09-30 374
2019-06-30 375
2019-03-31 375
2018-12-31 357
2018-09-30 364
2018-06-30 355
2018-03-31 339
2017-12-31 331
2017-09-30 332
2017-06-30 325
2017-03-31 325
2016-12-31 324
2016-09-30 324
2016-06-30 323
2016-03-31 323
2015-12-31 320
2015-09-30 322
2015-06-30 318
2015-03-31 317
2014-12-31 317
2014-09-30 315
2014-06-30 316
2014-03-31 315
2013-12-31 314
2013-09-30 314
2013-06-30 313
2013-03-31 312
2012-12-31 300
2012-09-30 300
2012-06-30 296
2012-03-31 293
2011-12-31 288
2011-09-30 289
Sector Industry Market Cap Revenue
Utilities Utility - Electric Power Distribution $19.696B $6.642B
NiSource Inc. is an energy holding company and together with its subsidiaries provides natural gas, electricity and other products and services in the U.S. NiSource has one of the nation's largest natural gas distribution networks as measured by number of customers. NiSource's principal subsidiary is NiSource Gas Distribution Group, Inc., which is a natural gas distribution holding company. The company generates the majority of its operating income from its rate-regulated businesses. Through its wholly-owned subsidiary NiSource Gas Distribution Group, it owns distribution subsidiaries that provide natural gas to residential, commercial and industrial customers.
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