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UNITIL CORP — 10-K Filings

32 10-K filings on record

This page lists all 10-K filings submitted to the SEC by UNITIL CORP (UTL), sorted by most recent first. Each row links to the full filing on EdgarLookup. UNITIL CORP has filed 32 10-K documents with the SEC since 2006. To view all SEC filings by UNITIL CORP, see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-Q 11-K 11-K/A 25 3 35-CERT 4 4/A 424B4 424B5 5 5/A 8-A12B/A 8-K 8-K/A ARS CERTNYS CORRESP DEF 14A DEFA14A EFFECT FWP NO ACT NT 10-K POS AMC PRE 14A RW S-3 S-3/A S-3ASR S-3D S-3DPOS S-3MEF S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13G/A SE U-1 U-1/A U-13-60 U-13-60/A U-6B-2 U-9C-3 U5S UPLOAD
Form Description Accession Number Filed Period
10-K 10-K 0001193125-26-042983 Feb 9, 2026 Dec 31, 2025
10-K 10-K 0000950170-25-017154 Feb 10, 2025 Dec 31, 2024
10-K 10-K 0000950170-24-014186 Feb 13, 2024 Dec 31, 2023
10-K 10-K 0000950170-23-002696 Feb 14, 2023 Dec 31, 2022
10-K 10-K 0001193125-22-023936 Feb 1, 2022 Dec 31, 2021
10-K 10-K 0001193125-21-025264 Feb 2, 2021 Dec 31, 2020
10-K 10-K 0001193125-20-019075 Jan 30, 2020 Dec 31, 2019
10-K FORM 10-K 0001193125-19-023132 Jan 31, 2019 Dec 31, 2018
10-K FORM 10-K 0001193125-18-028247 Feb 1, 2018 Dec 31, 2017
10-K FORM 10-K 0001193125-17-028224 Feb 2, 2017 Dec 31, 2016
10-K FORM 10-K 0001193125-16-440721 Jan 28, 2016 Dec 31, 2015
10-K FORM 10-K 0001193125-15-023683 Jan 28, 2015 Dec 31, 2014
10-K FORM 10-K 0001193125-14-025354 Jan 29, 2014 Dec 31, 2013
10-K FORM 10-K 0001193125-13-029141 Jan 30, 2013 Dec 31, 2012
10-K FORM 10-K 0001193125-12-033219 Feb 1, 2012 Dec 31, 2011
10-K FORM 10-K 0001193125-11-022690 Feb 3, 2011 Dec 31, 2010
10-K FORM 10-K 0001193125-10-027225 Feb 10, 2010 Dec 31, 2009
10-K FORM 10-K 0001193125-09-031869 Feb 18, 2009 Dec 31, 2008
10-K FORM 10-K 0001193125-08-026980 Feb 12, 2008 Dec 31, 2007
10-K FORM 10-K 0001193125-07-035915 Feb 21, 2007 Dec 31, 2006
10-K FORM 10-K 0001193125-06-036628 Feb 22, 2006 Dec 31, 2005
10-K FORM 10-K 0001193125-05-040836 Mar 2, 2005 Dec 31, 2004
10-K FORM 10-K 0001193125-04-030725 Feb 27, 2004 Dec 31, 2003
10-K 10K 2002 DRAFT 0000898080-03-000149 Mar 28, 2003 Dec 31, 2002
10-K 2001 ANNUAL 10K - WEB VERSION 0000755001-02-000003 Mar 22, 2002 Dec 31, 2001
10-K 2000 UNITIL 10K - WEB 0000755001-01-500004 Mar 22, 2001 Dec 31, 2000
10-K — 0000755001-00-000003 Mar 30, 2000 Dec 31, 1999
10-K — 0000755001-99-000008 Apr 1, 1999 Dec 31, 1998
10-K — 0000755001-98-000003 Mar 31, 1998 Dec 31, 1997
10-K — 0000755001-97-000006 Mar 31, 1997 Dec 31, 1996
10-K UNITIL CORP 1995 10-K 0000755001-96-000005 Mar 29, 1996 Dec 31, 1995
10-K UNITIL CORP 1994 10-K 0000755001-95-000002 Mar 30, 1995 Dec 31, 1994