SEC Filings

Search SEC EDGAR filings by company ticker and form type

arrow_back

Otter Tail Corp

10-K/A 3 filings

All 10-K/A Filings

Complete history of 10-K/A filings with the SEC

Date Filed View on EDGAR
23 Feb
Feb 23, 2026
open_in_new View Filing
22 Feb
Feb 22, 2018
open_in_new View Filing
15 May
May 15, 2017
open_in_new View Filing