Financial reports
ARS
2023 FY
Annual report to shareholders
28 Feb 24
10-K
2023 FY
Annual report
14 Feb 24
10-Q
2023 Q3
Quarterly report
3 Nov 23
10-Q
2023 Q2
Quarterly report
2 Aug 23
10-Q
2023 Q1
Quarterly report
3 May 23
ARS
2022 FY
Annual report to shareholders
1 Mar 23
10-K
2022 FY
Annual report
15 Feb 23
10-Q
2022 Q3
Quarterly report
2 Nov 22
10-Q
2022 Q2
Quarterly report
3 Aug 22
10-Q
2022 Q1
Quarterly report
4 May 22
Current reports
8-K
Submission of Matters to a Vote of Security Holders
10 Apr 24
8-K
Other Events
5 Apr 24
8-K
Entry into a Material Definitive Agreement
2 Apr 24
8-K
Otter Tail Corporation Announces Record Annual Earnings, Increases Quarterly Dividend, and Announces 2024 Earnings Guidance
13 Feb 24
8-K
Departure of Directors or Certain Officers
29 Jan 24
8-K
Other Events
21 Dec 23
8-K
Results of Operations and Financial Condition
31 Oct 23
8-K
Departure of Directors or Certain Officers
4 Oct 23
8-K
Results of Operations and Financial Condition
1 Aug 23
8-K/A
Submission of Matters to a Vote of Security Holders
20 Jun 23
Registration and prospectus
S-3ASR
Automatic shelf registration
3 May 24
S-3ASR
Automatic shelf registration
3 May 24
S-8
Registration of securities for employees
17 Apr 23
S-3ASR
Automatic shelf registration
3 May 21
S-3ASR
Automatic shelf registration
3 May 21
424B5
Prospectus supplement for primary offering
8 Nov 19
S-3ASR
Automatic shelf registration
3 May 18
S-3ASR
Automatic shelf registration
3 May 18
POSASR
Automatic shelf registration (post-effective amendment)
13 Oct 15
S-3ASR
Automatic shelf registration
11 May 15
Proxies
DEFA14A
Additional proxy soliciting materials
28 Feb 24
DEF 14A
Definitive proxy
28 Feb 24
DEFA14A
Additional proxy soliciting materials
7 Mar 23
DEFR14A
Revised proxy
7 Mar 23
DEF 14A
Definitive proxy
1 Mar 23
DEF 14A
Definitive proxy
2 Mar 22
DEF 14A
Definitive proxy
3 Mar 21
PRE 14A
Preliminary proxy
17 Feb 21
DEFA14A
Additional proxy soliciting materials
20 Mar 20
DEF 14A
Definitive proxy
9 Mar 20
Other
SD
Conflict minerals disclosure
25 May 23
SD
Conflict minerals disclosure
27 May 22
SD
Conflict minerals disclosure
28 May 21
SD
Conflict minerals disclosure
29 May 20
SD
Conflict minerals disclosure
31 May 19
SD
Conflict minerals disclosure
31 May 18
CT ORDER
Confidential treatment order
9 Jun 17
SD
Conflict minerals disclosure
31 May 17
SD
Conflict minerals disclosure
31 May 16
CT ORDER
Confidential treatment order
18 Sep 15