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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001466593-22-000010
Filing Date
2022-02-16
Accepted
2022-02-16 16:42:45
Documents
140
Period of Report
2021-12-31

Document Format Files

Seq Description Document Type Size
1 10-K ottr-20211231.htm   iXBRL 10-K 3923080
2 EX-21 a2021ex21subsidiariesofreg.htm EX-21 6577
3 EX-23 a2021ex23consentofindepend.htm EX-23 2364
4 EX-24 a2021ex24powerofattorney.htm EX-24 12186
5 EX-31.1 a202110-kex311.htm EX-31.1 9694
6 EX-31.2 a202110-kex312.htm EX-31.2 9554
7 EX-32.1 a202110-kex321.htm EX-32.1 4364
8 EX-32.2 a202110-kex322.htm EX-32.2 4344
14 GRAPHIC ottr-20211231_g1.jpg GRAPHIC 39004
15 GRAPHIC ottr-20211231_g2.jpg GRAPHIC 31340
16 GRAPHIC ottr-20211231_g3.jpg GRAPHIC 35738
17 GRAPHIC ottr-20211231_g4.jpg GRAPHIC 30996
18 GRAPHIC ottr-20211231_g5.jpg GRAPHIC 29831
19 GRAPHIC ottr-20211231_g6.jpg GRAPHIC 35027
20 GRAPHIC ottr-20211231_g7.jpg GRAPHIC 34262
21 GRAPHIC ottr-20211231_g8.jpg GRAPHIC 47926
22 GRAPHIC ottr-20211231_g9.jpg GRAPHIC 57853
  Complete submission text file 0001466593-22-000010.txt   18472716

Data Files

Seq Description Document Type Size
9 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT ottr-20211231.xsd EX-101.SCH 96585
10 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT ottr-20211231_cal.xml EX-101.CAL 130850
11 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT ottr-20211231_def.xml EX-101.DEF 506549
12 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT ottr-20211231_lab.xml EX-101.LAB 1118813
13 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT ottr-20211231_pre.xml EX-101.PRE 784085
134 EXTRACTED XBRL INSTANCE DOCUMENT ottr-20211231_htm.xml XML 3989674
Mailing Address 215 S CASCADE ST PO BOX 496 FERGUS FALLS MN 56538-0496
Business Address 215 S CASCADE ST PO BOX 496 FERGUS FALLS MN 56538-0496 866-410-8780
Otter Tail Corp (Filer) CIK: 0001466593 (see all company filings)

IRS No.: 270383995 | State of Incorp.: MN | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-53713 | Film No.: 22644191
SIC: 4911 Electric Services