Form 8-K - Current report:
SEC Accession No. 0001466593-25-000128
Filing Date
2025-12-18
Accepted
2025-12-18 09:16:12
Documents
17
Period of Report
2025-12-16
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-20251216.htm   iXBRL 8-K 25307
2 EX-99.1 pressrelease-directorchang.htm EX-99.1 8490
6 GRAPHIC clarkbiophoto002a.jpg GRAPHIC 39954
7 GRAPHIC image1a.jpg GRAPHIC 8395
8 GRAPHIC imagea.jpg GRAPHIC 1778491
9 GRAPHIC steverasche-110422a.jpg GRAPHIC 2865593
  Complete submission text file 0001466593-25-000128.txt   6615606

Data Files

Seq Description Document Type Size
3 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT ottr-20251216.xsd EX-101.SCH 1788
4 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT ottr-20251216_lab.xml EX-101.LAB 21629
5 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT ottr-20251216_pre.xml EX-101.PRE 12512
20 EXTRACTED XBRL INSTANCE DOCUMENT ottr-20251216_htm.xml XML 3060
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.: 251581478
SIC: 4911 Electric Services
(CF Office: 01 Energy & Transportation)