Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0001466593-25-000107
Filing Date
2025-08-06
Accepted
2025-08-06 13:54:15
Documents
87
Period of Report
2025-06-30

Document Format Files

Seq Description Document Type Size
1 10-Q ottr-20250630.htm   iXBRL 10-Q 1852592
2 EX-31.1 a2025q210-qex311.htm EX-31.1 9489
3 EX-31.2 a2025q210-qex312.htm EX-31.2 9346
4 EX-32.1 a2025q210-qex321.htm EX-32.1 4094
5 EX-32.2 a2025q210-qex322.htm EX-32.2 4070
  Complete submission text file 0001466593-25-000107.txt   9502111

Data Files

Seq Description Document Type Size
6 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT ottr-20250630.xsd EX-101.SCH 53042
7 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT ottr-20250630_cal.xml EX-101.CAL 95824
8 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT ottr-20250630_def.xml EX-101.DEF 264876
9 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT ottr-20250630_lab.xml EX-101.LAB 665371
10 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT ottr-20250630_pre.xml EX-101.PRE 476094
90 EXTRACTED XBRL INSTANCE DOCUMENT ottr-20250630_htm.xml XML 1789341
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-Q | Act: 34 | File No.: 000-53713 | Film No.: 251188810
SIC: 4911 Electric Services
(CF Office: 01 Energy & Transportation)