NiSource Inc.

NiSource Inc.

NIยทNYSE

$45.85

+0.70%
UtilitiesRegulated Gas

NiSource Inc., an energy holding company, operates as a regulated natural gas and electric utility company in the United States. It operates through two segments, Gas Distribution Operations and Electric Operations. The company distributes natural gas to approximately 853,000 customers in northern Indiana, as well as approximately 2.4 million residential, commercial, and industrial customers in Ohio, Pennsylvania, Virginia, Kentucky, and Maryland. It operates approximately 54,600 miles of distribution main pipelines, as well as associated individual customer service lines; and 1,000 miles of transmission main pipelines. The company generates, transmits, and distributes electricity to approximately 483,000 customers in 20 counties in the northern part of Indiana, as well as engages in wholesale electric and transmission transactions. It owns and operates coal-fired electric generating stations with a capacity of 722 megawatts (MW) in Wheatfield and 455 MW in Michigan City; combined cycle gas turbine with a capacity of 563 MW in West Terre Haute; natural gas generating units with a capacity of 155 MW in Wheatfield; hydro generating plants with a capacity of 9 MW in Carroll County and 7 MW in White County; and wind generating units with a capacity of 102 MW and 302 MW in White County, Indiana. The company was formerly known as NIPSCO Industries, Inc. and changed its name to NiSource Inc. in April 1999. NiSource Inc. was founded in 1847 and is headquartered in Merrillville, Indiana.

At a Glance

Live Snapshot
Market Cap$21.98B
EPS1.9600
P/E Ratio23.39
Earnings Date08/05/2026

SEC Filings

NI - Filing history and reports

Filing TypeFiling DatePeriod EndingFiscal YearActions
8-K

8-K 2026

N/A

May 18, 2026
May 18, 2026
2026
8-K

8-K 2026

N/A

May 12, 2026
May 11, 2026
2026
10-Q

10-Q 2026 Q1

Q1

May 06, 2026
March 31, 2026
2026
8-K

8-K 2026

N/A

May 06, 2026
May 06, 2026
2026
DEF 14A

DEF 14A 2026

N/A

March 30, 2026
May 11, 2026
2026
8-K

8-K 2026

N/A

February 11, 2026
February 11, 2026
2026
10-K

10-K 2025 FY

FY

February 11, 2026
December 31, 2025
2025
8-K

8-K 2025

N/A

December 11, 2025
December 11, 2025
2025
8-K

8-K 2025

N/A

November 07, 2025
November 07, 2025
2025
8-K

8-K 2025

N/A

October 31, 2025
October 31, 2025
2025
Showing 1 to 10 of 503 filings

Understanding SEC Filings

Essential regulatory documents for investors

SEC filings are mandatory documents that publicly traded companies must submit to the Securities and Exchange Commission. These reports provide critical insights into a company's financial health, operations, risks, and strategic direction. For investors conducting due diligence, these filings are the most authoritative source of company information.

10-K

Annual Report

Comprehensive annual financial report filed within 60-90 days of fiscal year-end. Includes audited financial statements, management discussion & analysis (MD&A), risk factors, and detailed business operations. The most thorough financial disclosure of the year.

Filed annually
10-Q

Quarterly Report

Unaudited quarterly financial report filed within 40-45 days after each of the first three fiscal quarters. Provides updates on financial position, results of operations, and significant events. Essential for tracking quarterly performance trends.

Filed 3 times per year
8-K

Current Report

Event-driven filing for material events that shareholders should know about, filed within 4 business days. Includes acquisitions, executive changes, bankruptcy, earnings releases, and other significant developments. Critical for staying informed about breaking news.

Filed as events occur
DEF 14A

Proxy Statement

Definitive proxy statement sent to shareholders before annual meetings. Contains executive compensation details, board member information, voting matters, and corporate governance policies. Key for understanding management incentives and board composition.

Filed before shareholder meetings
S-1

Registration Statement

Initial registration for securities offerings, including IPOs. Provides detailed company history, business model, financial statements, risk factors, and use of proceeds. Essential for evaluating new investment opportunities and understanding company fundamentals.

Filed for new offerings
20-F

Foreign Annual Report

Annual report for foreign private issuers, equivalent to Form 10-K for non-U.S. companies. Filed within 4-6 months of fiscal year-end. Contains audited financials, business description, and regulatory disclosures adapted for international companies.

Foreign companies only

Why SEC Filings Matter

  • Regulatory Accuracy: Filings are subject to SEC review and legal penalties for misstatements, ensuring high data quality
  • Management Insights: MD&A sections reveal management's perspective on trends, challenges, and future outlook
  • Risk Assessment: Detailed risk factor disclosures help investors understand potential threats to business operations
  • Competitive Analysis: Business descriptions and segment data enable comparison with industry peers
  • Historical Context: Years of filings provide trend analysis and context for current performance