# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001193125-18-028247
Filing Date
2018-02-01
Accepted
2018-02-01 06:55:58
Documents
94
Period of Report
2017-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | FORM 10-K | d499165d10k.htm | 10-K | 1332896
2 | EX-11.1 | d499165dex111.htm | EX-11.1 | 12054
3 | EX-12.1 | d499165dex121.htm | EX-12.1 | 28296
4 | EX-21.1 | d499165dex211.htm | EX-21.1 | 1361
5 | EX-23.1 | d499165dex231.htm | EX-23.1 | 1826
6 | EX-31.1 | d499165dex311.htm | EX-31.1 | 9187
7 | EX-31.2 | d499165dex312.htm | EX-31.2 | 9149
8 | EX-31.3 | d499165dex313.htm | EX-31.3 | 9159
9 | EX-32.1 | d499165dex321.htm | EX-32.1 | 5858
10 | EX-99.1 | d499165dex991.htm | EX-99.1 | 67554
17 | GRAPHIC | g499165g62e17.jpg | GRAPHIC | 68687
18 | GRAPHIC | g499165g62g77.jpg | GRAPHIC | 27957
| Complete submission text file | 0001193125-18-028247.txt |  | 9614925

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
11 | XBRL INSTANCE DOCUMENT | utl-20171231.xml | EX-101.INS | 2153420
12 | XBRL TAXONOMY EXTENSION SCHEMA | utl-20171231.xsd | EX-101.SCH | 85972
13 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE | utl-20171231_cal.xml | EX-101.CAL | 96145
14 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE | utl-20171231_def.xml | EX-101.DEF | 564195
15 | XBRL TAXONOMY EXTENSION LABEL LINKBASE | utl-20171231_lab.xml | EX-101.LAB | 721723
16 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE | utl-20171231_pre.xml | EX-101.PRE | 648133

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.: 18564621
SIC: 4931 Electric & Other Services Combined