Otter Tail Corp — DEFA14A Filings
6 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by Otter Tail Corp (OTTR), sorted by most recent first. Each row links to the full filing on EdgarLookup. Otter Tail Corp has filed 6 DEFA14A documents with the SEC since 2009. To view all SEC filings by Otter Tail Corp, see the full filings list.
All
10-K
10-K/A
10-Q
10-Q/A
144
15-12G
3
3/A
4
4/A
424B2
424B5
5
8-K
8-K/A
8-K12G3
ARS
CORRESP
CT ORDER
DEF 14A
DEFA14A
DEFR14A
FWP
POSASR
PRE 14A
S-3ASR
S-8
S-8 POS
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0001466593-26-000024 | Mar 2, 2026 | — |
| DEFA14A | DEFA14A | 0001466593-25-000047 | Mar 3, 2025 | — |
| DEFA14A | DEFA14A | 0001466593-24-000057 | Feb 28, 2024 | — |
| DEFA14A | DEFA14A | 0001466593-23-000081 | Mar 7, 2023 | — |
| DEFA14A | DEFA14A | 0001193125-20-080349 | Mar 20, 2020 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-14-122661 | Mar 31, 2014 | — |