Company facts
- Industry
- Electric Services
- Headquarters
- Fergus Falls, Minnesota
- Most recent report
- 8-K, filed Sep 1, 2026
- Incorporated
- Minnesota
- Filings on record
- 876 filings
- On EDGAR
- CIK 1466593
- Fiscal year ends
- December
- Filer status
- Large accelerated filer
Financials 8 of 73
News 8 of 175
Prospectuses and Registrations 8 of 30
- S-3ASR Automatic shelf registration May 3, 2024
- S-3ASR Automatic shelf registration May 3, 2024
- S-8 Registration statement for an employee plan Apr 17, 2023
- S-3ASR Automatic shelf registration May 3, 2021
- S-3ASR Automatic shelf registration May 3, 2021
- 424B5 Prospectus supplement for an offering Nov 8, 2019
- S-3ASR Automatic shelf registration May 3, 2018
- S-3ASR Automatic shelf registration May 3, 2018
Proxies 8 of 26
- DEFA14A Extra proxy material Mar 2, 2026
- DEF 14A Proxy statement for a shareholder vote Mar 2, 2026
- PRE 14A Preliminary proxy statement Feb 18, 2026
- DEF 14A Proxy statement for a shareholder vote Mar 3, 2025
- DEFA14A Extra proxy material Mar 3, 2025
- DEFA14A Extra proxy material Feb 28, 2024
- DEF 14A Proxy statement for a shareholder vote Feb 28, 2024
- DEFA14A Extra proxy material Mar 7, 2023
Ownership 8 of 526
- 4 Insider reported a trade Aug 12, 2026
- 4 Insider reported a trade Aug 11, 2026
- 144 Notice of a proposed sale of restricted stock Aug 7, 2026
- SCHEDULE 13G Large holder reported a passive stake Aug 7, 2026
- SCHEDULE 13G Large holder reported a passive stake Apr 30, 2026
- SCHEDULE 13G Large holder reported a passive stake Apr 29, 2026
- 4 Insider reported a trade Apr 15, 2026
- 4 Insider reported a trade Apr 15, 2026
Other 8 of 46
- SD Conflict minerals disclosure May 29, 2026
- ARS Annual report sent to shareholders Mar 2, 2026
- SD Conflict minerals disclosure May 30, 2025
- ARS Annual report sent to shareholders Mar 3, 2025
- SD Conflict minerals disclosure May 24, 2024
- ARS Annual report sent to shareholders Feb 28, 2024
- SD Conflict minerals disclosure May 25, 2023
- ARS Annual report sent to shareholders Mar 1, 2023
Everything here comes from Otter Tail Corp's own filings on SEC EDGAR. The filing list is rechecked every hour.