Form 8-K - Current report:
SEC Accession No. 0001466593-26-000037
Filing Date
2026-04-14
Accepted
2026-04-14 14:32:40
Documents
15
Period of Report
2026-04-13
Items
Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
Item 7.01: Regulation FD Disclosure
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K ottr-20260413.htm   iXBRL 8-K 29306
2 EX-99.1 ex991-pressreleasex2026new.htm EX-99.1 9260
6 GRAPHIC timrogelstada.jpg GRAPHIC 1630136
7 GRAPHIC toddwahlunda.jpg GRAPHIC 1224980
8 GRAPHIC tylernelsona.jpg GRAPHIC 1714441
  Complete submission text file 0001466593-26-000037.txt   6451189

Data Files

Seq Description Document Type Size
3 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT ottr-20260413.xsd EX-101.SCH 1788
4 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT ottr-20260413_lab.xml EX-101.LAB 21629
5 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT ottr-20260413_pre.xml EX-101.PRE 12512
18 EXTRACTED XBRL INSTANCE DOCUMENT ottr-20260413_htm.xml XML 2746
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: 8-K | Act: 34 | File No.: 000-53713 | Film No.: 26860422
SIC: 4911 Electric Services
(CF Office: 01 Energy & Transportation)