NI · NYSE · CIK 0001111711

NISOURCE INC.

NISOURCE INC.’s most recent SEC filing in our snapshot is a Form 8-K filed on Oct 16, 2026. In fiscal 2025 (year ended Dec 31, 2025) it reported revenue of $6.5B and net income of $929.5M, according to its XBRL data on EDGAR. Its EDGAR record lists 36 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
$6.5B
Net income, FY2025
$929.5M
Form 4 filings on record, past 12 months
36

Company overview

Legal name (as filed)
NISOURCE INC.
Ticker
NI
SEC Central Index Key (CIK)
0001111711
Industry (SIC)
Electric & Other Services Combined (code 4931)
Business address
MERRILLVILLE, IN
State or country of incorporation
DE
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#585 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from NISOURCE INC.’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$4.7BFY2021$5.7BFY2022$5.3BFY2023$5.3BFY2024$6.5BFY2025
Net income
$584.9MFY2021$804.1MFY2022$714.3MFY2023$760.4MFY2024$929.5MFY2025
NI annual results
ItemFY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024		FY2025
ended Dec 31, 2025
Revenue$4.7B$5.7B$5.3B$5.3B$6.5B
Net income$584.9M$804.1M$714.3M$760.4M$929.5M
Diluted EPS$1.27$1.70$1.48$1.62$1.95
Total assets$24.2B$26.7B$31.1B$31.8B$35.9B
Cash and equivalents$84.2M$40.8M$2.2B$156.6M$110.1M

XBRL tags used: revenue = RevenueFromContractWithCustomerExcludingAssessedTax; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

NI latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Feb 11, 202610-KAnnual report· period Dec 31, 2025Document · Index
Aug 5, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Oct 16, 20268-KNew financial obligation· period Oct 15, 2026Document · Index
Mar 30, 2026DEF 14ADefinitive proxy statement· period May 11, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about NISOURCE INC., by form type:

4 ×168-K ×6144 ×5424B2 ×2FWP ×2424B5 ×210-Q ×2SCHEDULE 13G ×2SCHEDULE 13G/A ×111-K ×1ARS ×1
NI recent filings
FiledFormWhat it isOriginal
Oct 16, 20268-KNew financial obligation· period Oct 15, 2026Document · Index
Aug 18, 20268-KOther events· period Aug 18, 2026Document · Index
Aug 18, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 14, 2026Document · Index
Aug 14, 2026144Notice of proposed sale of securitiesDocument · Index
Aug 14, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Aug 14, 2026424B2Prospectus (pricing supplement)Document · Index
Aug 13, 2026FWPFWPDocument · Index
Aug 13, 2026424B5424B5Document · Index
Aug 5, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 5, 20268-KResults of operations· period Aug 5, 2026Document · Index
Jul 15, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 13, 2026Document · Index
Jun 18, 202611-KAnnual report of employee stock plans· period Dec 31, 2025Document · Index
May 27, 20264Statement of changes in beneficial ownership (insider trade)· period May 22, 2026Document · Index
May 26, 20264Statement of changes in beneficial ownership (insider trade)· period May 21, 2026Document · Index
May 22, 2026144Notice of proposed sale of securitiesDocument · Index
May 21, 2026144Notice of proposed sale of securitiesDocument · Index
May 21, 20264Statement of changes in beneficial ownership (insider trade)· period May 14, 2026Document · Index
May 20, 2026144Notice of proposed sale of securitiesDocument · Index
May 18, 20268-KOther events· period May 18, 2026Document · Index
May 14, 2026144Notice of proposed sale of securitiesDocument · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 12, 20268-KShareholder vote results· period May 11, 2026Document · Index
May 12, 2026424B2Prospectus (pricing supplement)Document · Index
May 11, 2026FWPFWPDocument · Index
May 11, 2026424B5424B5Document · Index
May 6, 202610-QQuarterly report· period Mar 31, 2026Document · Index
May 6, 20268-KResults of operations· period May 6, 2026Document · Index
Apr 30, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Apr 29, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Mar 30, 2026ARSARS· period Dec 31, 2025Document · Index

Insider filing activity

36 Form 4 filings appear in NISOURCE INC.’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0001111711 and XBRL company facts. NISOURCE INC. on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.