# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001466593-23-000053
Filing Date
2023-02-15
Accepted
2023-02-15 13:57:03
Documents
143
Period of Report
2022-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | ottr-20221231.htm iXBRL | 10-K | 3912429
2 | EX-10.28 | ex1028summaryofnon-employe.htm | EX-10.28 | 9499
3 | EX-10.36 | a2022ex1036formofcicsevera.htm | EX-10.36 | 47288
4 | EX-21 | a2022ex21subsidiariesofreg.htm | EX-21 | 6577
5 | EX-23 | a2022ex23consentofindepend.htm | EX-23 | 2342
6 | EX-24 | a2022ex24powerofattorney.htm | EX-24 | 11208
7 | EX-31.1 | a202210-kex311.htm | EX-31.1 | 9694
8 | EX-31.2 | a202210-kex312.htm | EX-31.2 | 9554
9 | EX-32.1 | a202210-kex321.htm | EX-32.1 | 4364
10 | EX-32.2 | a202210-kex322.htm | EX-32.2 | 4345
16 | GRAPHIC | ottr-20221231_g1.jpg | GRAPHIC | 39932
17 | GRAPHIC | ottr-20221231_g2.jpg | GRAPHIC | 31199
18 | GRAPHIC | ottr-20221231_g3.jpg | GRAPHIC | 36413
19 | GRAPHIC | ottr-20221231_g4.jpg | GRAPHIC | 32608
20 | GRAPHIC | ottr-20221231_g5.jpg | GRAPHIC | 33254
21 | GRAPHIC | ottr-20221231_g6.jpg | GRAPHIC | 35039
22 | GRAPHIC | ottr-20221231_g7.jpg | GRAPHIC | 34377
23 | GRAPHIC | ottr-20221231_g8.jpg | GRAPHIC | 59538
24 |  | ottr-20221231_g9.jpg | GRAPHIC | 53869
| Complete submission text file | 0001466593-23-000053.txt |  | 18848212

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
11 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | ottr-20221231.xsd | EX-101.SCH | 100404
12 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | ottr-20221231_cal.xml | EX-101.CAL | 139183
13 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | ottr-20221231_def.xml | EX-101.DEF | 505430
14 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | ottr-20221231_lab.xml | EX-101.LAB | 1144524
15 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | ottr-20221231_pre.xml | EX-101.PRE | 786493
137 | EXTRACTED XBRL INSTANCE DOCUMENT | ottr-20221231_htm.xml | XML | 4019050

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)

EIN.: 270383995 | State of Incorp.: MN | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-53713 | Film No.: 23634871
SIC: 4911 Electric Services