Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0001629899-26-000003
Filing Date
2026-01-06
Accepted
2026-01-06 15:28:21
Documents
1
Period of Report
2026-01-01

Document Format Files

Seq Description Document Type Size
1 FORM 3 wk-form3_1767731298.html 3  
1 FORM 3 wk-form3_1767731298.xml 3 1712
  Complete submission text file 0001629899-26-000003.txt   3246
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 (Issuer) CIK: 0001466593 (see all company filings)

EIN.: 270383995 | State of Incorp.: MN | Fiscal Year End: 1231
SIC: 4911 Electric Services
(CF Office: 01 Energy & Transportation)

Mailing Address 414 NICOLLET MALL MINNEAPOLIS MN 55401
Business Address
Clark Christopher B (Reporting) CIK: 0001629899 (see all company filings)

Type: 3 | Act: 34 | File No.: 000-53713 | Film No.: 26511085