Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001193125-26-042983
Filing Date
2026-02-09
Accepted
2026-02-09 17:01:06
Documents
96
Period of Report
2025-12-31

Document Format Files

Seq Description Document Type Size
1 10-K utl-20251231.htm   iXBRL 10-K 6061439
2 EX-21.1 utl-ex21_1.htm EX-21.1 4297
3 EX-23.1 utl-ex23_1.htm EX-23.1 7503
4 EX-31.1 utl-ex31_1.htm EX-31.1 16868
5 EX-31.2 utl-ex31_2.htm EX-31.2 16701
6 EX-31.3 utl-ex31_3.htm EX-31.3 16845
7 EX-32.1 utl-ex32_1.htm EX-32.1 30273
8 EX-99.1 utl-ex99_1.htm EX-99.1 325675
9 GRAPHIC img121274776_0.jpg GRAPHIC 5351
10 GRAPHIC img178778835_0.gif GRAPHIC 32992
  Complete submission text file 0001193125-26-042983.txt   27330870

Data Files

Seq Description Document Type Size
11 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT utl-20251231.xsd EX-101.SCH 2576950
99 EXTRACTED XBRL INSTANCE DOCUMENT utl-20251231_htm.xml XML 7126146
Mailing Address 6 LIBERTY LANE WEST HAMPTON NH 03842
Business Address 6 LIBERTY LANE WEST HAMPTON NH 03842 6037736504
UNITIL CORP (Filer) CIK: 0000755001 (see all company filings)

EIN.: 020381573 | State of Incorp.: NH | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-08858 | Film No.: 26612325
SIC: 4931 Electric & Other Services Combined
(CF Office: 01 Energy & Transportation)