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NiSource Inc. (NI)
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NiSource Inc. (NI) SEC Filings

Filing links are provided when reliable SEC filing data is available.

Recent Filings

FormFiling DateAcceptedDocument
4May 27, 2026May 27, 2026View filing
4May 26, 2026May 26, 2026View filing
4May 21, 2026May 21, 2026View filing
8-KMay 18, 2026May 18, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
4May 13, 2026May 13, 2026View filing
8-KMay 12, 2026May 12, 2026View filing
424B2May 12, 2026May 12, 2026View filing
FWPMay 11, 2026May 11, 2026View filing
424B5May 11, 2026May 11, 2026View filing
10-QMay 6, 2026May 6, 2026View filing
8-KMay 6, 2026May 6, 2026View filing
SC 13GApr 30, 2026Apr 30, 2026View filing
SC 13GApr 29, 2026Apr 29, 2026View filing
ARSMar 30, 2026Mar 30, 2026View filing
DEFA14AMar 30, 2026Mar 30, 2026View filing
DEF 14AMar 30, 2026Mar 30, 2026View filing
SC 13G/AMar 27, 2026Mar 27, 2026View filing
4Mar 3, 2026Mar 3, 2026View filing
4Mar 3, 2026Mar 3, 2026View filing
4Mar 3, 2026Mar 3, 2026View filing

About NiSource Inc.

NiSource Inc. operates as an energy holding company, primarily functioning as a regulated natural gas and electric utility within the United States. Its business activities are organized into two main divisions: Gas Distribution Operations and Electric Operations. The company's Gas Distribution segment delivers natural gas to approximately 853,000 customers across northern Indiana, and an additional 2.4 million residential, commercial, and industrial clients throughout Ohio, Pennsylvania, Virginia, Kentucky, and Maryland. This extensive network includes about 54,600 miles of distribution main pipelines and customer service lines, along with 1,000 miles of transmission main pipelines. Through its Electric Operations, NiSource provides electricity to roughly 483,000 customers residing in 20 counties in northern Indiana, while also engaging in wholesale electricity and transmission transactions. The company maintains a diverse portfolio of power generation assets. These include coal-fired plants with capacities of 722 megawatts (MW) in Wheatfield and 455 MW in Michigan City; a 563 MW combined cycle gas turbine facility in West Terre Haute; natural gas generating units providing 155 MW in Wheatfield; hydroelectric plants contributing 9 MW in Carroll County and 7 MW in White County; and wind energy facilities in White County, Indiana, producing 102 MW and 302 MW, respectively. Originally founded in 1847, the company was known as NIPSCO Industries, Inc. before officially changing its name to NiSource Inc. in April 1999. Its corporate headquarters are located in Merrillville, Indiana.

Merrillville, IN
7,687 employees
Utilities / Regulated Gas
Sector
Utilities
Industry
Regulated Gas
CEO
Lloyd Yates