Companies: 10,795·Total market cap: $144.5T
NiSource Inc.

NiSource Inc.

NINYSEUtilities● Active
$46.21
$-0.40(-0.86%)
Market Cap$22.2B
P/E Ratio
52W High$48.98
52W Low$38.45
SEC Filings

NiSource Inc. (NI) SEC Filings & 10-K Annual Reports

SEC EDGAR regulatory submissions (10-K, 10-Q, 8-K), latest forms, and full filing history — quick links to financials and earnings below.

SEC EDGAR · data.sec.gov · CIK 0001111711 · NI · NYSE · as of Jun 8, 2026

Filing snapshot

1,007+
Total Filings
4
Latest Form
2026-05-27
Most Recent
1962
Filing Since

Source: SEC EDGAR (data.sec.gov) · CIK 0001111711 · Updated hourly · Not investment advice

Latest Annual Report

10-K · Annual ReportFY
Filed Date
2026-02-11
Fiscal Year End
Feb 11, 2026
Accession No.
0001111711-26-000027
Primary Document
nix-20251231.htm
Source: data.sec.gov · CIK 0001111711 · Accession 0001111711-26-000027

Latest Key Filings

10-QQuarterly Report
10-Q
2026-05-06
8-KCurrent Report
8-K
2026-05-18Material Event
Form 4Insider Activity
Ownership Change Disclosures

Executive & director trade disclosures. Full buy/sell sentiment analysis on the dedicated tab.

SEC Filing History

Hide Form 4 / 144
8-KCurrent Report
8-K
2026-05-18
View
8-KCurrent Report
8-K
2026-05-12
View
424B2424B2
424B2
2026-05-12
View
FWPFWP
FWP
2026-05-11
View
424B5424B5
424B5
2026-05-11
View
10-QQuarterly Report
10-Q
2026-05-06
View
8-KCurrent Report
8-K
2026-05-06
View
SCHEDULE 13GSCHEDULE 13G
SCHEDULE 13G
2026-04-30
View
SCHEDULE 13GSCHEDULE 13G
SCHEDULE 13G
2026-04-29
View
ARSARS
ARS
2026-03-30
View
DEFA14AProxy Statement (Additional)
DEFA14A
2026-03-30
View
DEF 14AProxy Statement
DEF 14A
2026-03-30
View
SCHEDULE 13G/ASCHEDULE 13G/A
SCHEDULE 13G/A
2026-03-27
View
10-KAnnual Report
10-K
2026-02-11
View
8-KCurrent Report
8-K
2026-02-11
View
Showing 1–15 of 508 filingsForm 4 / 144 hidden· 1007 total in EDGAR

About SEC Filings & 10-K Annual Reports

Data source: SEC EDGAR (data.sec.gov)  |  Updated: Hourly  |  CIK: 0001111711  |  Exchange: NYSE · Utilities

NiSource Inc. (NYSE: NI) has submitted 1,007+ documents to the U.S. Securities and Exchange Commission (SEC) since its IPO in 1962. As a Utilities sector company with CIK 0001111711, all filings are publicly accessible via the EDGAR database at no cost.

The annual 10-K report is NiSource Inc.'s most comprehensive regulatory disclosure. The most recent NiSource Inc. 10-K was filed on 2026-02-11 for fiscal year ending 2026. Historical NI 10-K annual reports are available from 2015 through 2026.

Investors researching NiSource Inc. SEC filings can access 10-K annual reports, quarterly 10-Q reports, material event 8-K filings, and proxy statements directly from the links above. All documents are sourced from the official SEC EDGAR system.

Source: SEC EDGAR · data.sec.gov · SEC Form 10-K · SEC Form 10-Q · SEC Form 8-K2026-06-08

Frequently Asked Questions

NI SEC Filings · 8 questions

NiSource Inc. (NI) SEC filings are publicly available on this page and on the official SEC EDGAR database at sec.gov. You can browse all 1,007+ filings and access original documents at no cost. NiSource Inc.'s CIK is 0001111711.

NI SEC filingsNiSource Inc. SEC documentsfind NI 10-K