Form 8-K - Current report:
SEC Accession No. 0001466593-25-000054
Filing Date
2025-03-31
Accepted
2025-03-31 10:31:20
Documents
17
Period of Report
2025-03-27
Items
Item 1.01: Entry into a Material Definitive Agreement
Item 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K ottr-20250327.htm   iXBRL 8-K 25708
2 EX-4.1 ottertailpowercompanynotep.htm EX-4.1 617832
7 GRAPHIC image_0a.jpg GRAPHIC 50224
8 GRAPHIC image_1a.jpg GRAPHIC 15662
  Complete submission text file 0001466593-25-000054.txt   976236

Data Files

Seq Description Document Type Size
3 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT ottr-20250327.xsd EX-101.SCH 2042
4 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT ottr-20250327_def.xml EX-101.DEF 2852
5 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT ottr-20250327_lab.xml EX-101.LAB 24396
6 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT ottr-20250327_pre.xml EX-101.PRE 14682
19 EXTRACTED XBRL INSTANCE DOCUMENT ottr-20250327_htm.xml XML 2834
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.: 25789851
SIC: 4911 Electric Services
(CF Office: 01 Energy & Transportation)