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NISOURCE INC. — 10-K Filings

25 10-K filings on record

This page lists all 10-K filings submitted to the SEC by NISOURCE INC. (NI), sorted by most recent first. Each row links to the full filing on EdgarLookup. NISOURCE INC. has filed 25 10-K documents with the SEC since 2014. To view all SEC filings by NISOURCE INC., see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-K405 10-Q 11-K 144 15-12B 15-15D 25 25-NSE 3 3/A 35-CERT 4 4/A 424B2 424B3 424B4 424B5 425 5 8-A12B 8-A12B/A 8-K 8-K/A ARS CERT CORRESP DEF 14A DEFA14A EFFECT FWP NO ACT NT 10-K NT 11-K POS AM POS AMC POSASR PRE 14A PRER14A PX14A6G S-1 S-3 S-3/A S-3ASR S-4 S-4/A S-8 S-8 POS SC 13G SC 13G/A SC TO-C SC TO-I SC TO-I/A SCHEDULE 13G SCHEDULE 13G/A SE U-1 U-1/A U-12-IA U-12-IB U-13-60 U-6B-2 U-9C-3 U5A U5B U5B/A U5S U5S/A UPLOAD
Form Description Accession Number Filed Period
10-K 10-K 0001111711-26-000027 Feb 11, 2026 Dec 31, 2025
10-K 10-K 0001111711-25-000008 Feb 12, 2025 Dec 31, 2024
10-K 10-K 0001111711-24-000011 Feb 21, 2024 Dec 31, 2023
10-K 10-K 0001111711-23-000006 Feb 22, 2023 Dec 31, 2022
10-K 10-K 0001111711-22-000007 Feb 23, 2022 Dec 31, 2021
10-K 10-K 0001111711-21-000010 Feb 17, 2021 Dec 31, 2020
10-K 10-K 0001111711-20-000013 Feb 28, 2020 Dec 31, 2019
10-K 10-K 0001111711-19-000008 Feb 20, 2019 Dec 31, 2018
10-K 10-K 0001111711-18-000008 Feb 20, 2018 Dec 31, 2017
10-K 10-K 0001111711-17-000011 Feb 22, 2017 Dec 31, 2016
10-K 10-K 0001111711-16-000049 Feb 18, 2016 Dec 31, 2015
10-K 10-K 0001111711-15-000008 Feb 18, 2015 Dec 31, 2014
10-K 10-K 0001111711-14-000016 Feb 18, 2014 Dec 31, 2013
10-K 10-K 0001111711-13-000007 Feb 19, 2013 Dec 31, 2012
10-K 10-K 0001193125-12-077712 Feb 24, 2012 Dec 31, 2011
10-K FORM 10-K 0000950123-11-019598 Feb 28, 2011 Dec 31, 2010
10-K FORM 10-K 0000950123-10-017958 Feb 26, 2010 Dec 31, 2009
10-K 10-K 0000950152-09-001944 Feb 27, 2009 Dec 31, 2008
10-K FORM 10-K 0000950137-08-003307 Mar 5, 2008 Dec 31, 2007
10-K FORM 10-K 0000950137-07-003072 Mar 1, 2007 Dec 31, 2006
10-K ANNUAL REPORT 0000950134-06-004660 Mar 10, 2006 Dec 31, 2005
10-K FORM 10-K 0000950137-05-002819 Mar 9, 2005 Dec 31, 2004
10-K ANNUAL REPORT 0000950137-04-001796 Mar 12, 2004 Dec 31, 2003
10-K FORM 10-K NISOURCE INC. 0000893220-03-000230 Mar 3, 2003 Dec 31, 2002
10-K NISOURCE, INC FORM 10-K 0000893220-02-000181 Feb 22, 2002 Dec 31, 2001