Otter Tail Corp SEC filings OTTR

Otter Tail Corp has 878 filings in SEC EDGAR's recent list, going back to Jul 1, 2009. Its latest annual report, Form ARS, was filed on Mar 2, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 3, 2026 (results of operations). The company's fiscal year ends on December 31.

Form Description Filed Period
10-Q Quarterly report Nov 4, 2026 Sep 30, 2026
10-Q Quarterly report Aug 5, 2026 Jun 30, 2026
10-Q Quarterly report May 6, 2026 Mar 31, 2026
10-Q Quarterly report Nov 5, 2025 Sep 30, 2025
10-Q Quarterly report Aug 6, 2025 Jun 30, 2025
10-Q Quarterly report May 7, 2025 Mar 31, 2025
10-Q Quarterly report Nov 7, 2024 Sep 30, 2024
10-Q Quarterly report Aug 7, 2024 Jun 30, 2024
10-Q Quarterly report May 8, 2024 Mar 31, 2024
10-Q Quarterly report Nov 3, 2023 Sep 30, 2023
10-Q Quarterly report Aug 2, 2023 Jun 30, 2023
10-Q Quarterly report May 3, 2023 Mar 31, 2023
10-Q Quarterly report Nov 2, 2022 Sep 30, 2022
10-Q Quarterly report Aug 3, 2022 Jun 30, 2022
10-Q Quarterly report May 4, 2022 Mar 31, 2022
10-Q Quarterly report Nov 3, 2021 Sep 30, 2021
10-Q Quarterly report Aug 6, 2021 Jun 30, 2021
10-Q Quarterly report May 7, 2021 Mar 31, 2021
10-Q Quarterly report Nov 6, 2020 Sep 30, 2020
10-Q Quarterly report Aug 7, 2020 Jun 30, 2020
10-Q Quarterly report May 8, 2020 Mar 31, 2020
10-Q Quarterly report Nov 8, 2019 Sep 30, 2019
10-Q Quarterly report Aug 9, 2019 Jun 30, 2019
10-Q Quarterly report May 9, 2019 Mar 31, 2019
10-Q Quarterly report Nov 9, 2018 Sep 30, 2018
10-Q Quarterly report Aug 9, 2018 Jun 30, 2018
10-Q Quarterly report May 9, 2018 Mar 31, 2018
10-Q Quarterly report Nov 8, 2017 Sep 30, 2017
10-Q Quarterly report Aug 9, 2017 Jun 30, 2017
10-Q Quarterly report May 9, 2017 Mar 31, 2017
10-Q Quarterly report Nov 7, 2016 Sep 30, 2016
10-Q Quarterly report Aug 9, 2016 Jun 30, 2016
10-Q Quarterly report May 9, 2016 Mar 31, 2016
10-Q Quarterly report Nov 9, 2015 Sep 30, 2015
10-Q Quarterly report Aug 10, 2015 Jun 30, 2015
10-Q Quarterly report May 11, 2015 Mar 31, 2015
10-Q Quarterly report Nov 10, 2014 Sep 30, 2014
10-Q Quarterly report Aug 11, 2014 Jun 30, 2014
10-Q Quarterly report May 12, 2014 Mar 31, 2014
10-Q Quarterly report Nov 12, 2013 Sep 30, 2013
10-Q/A Amended quarterly report Sep 27, 2013 Jun 30, 2013
10-Q Quarterly report Aug 9, 2013 Jun 30, 2013
10-Q Quarterly report May 10, 2013 Mar 31, 2013
10-Q Quarterly report Nov 9, 2012 Sep 30, 2012
10-Q Quarterly report Aug 9, 2012 Jun 30, 2012
10-Q Quarterly report May 10, 2012 Mar 31, 2012
10-Q Quarterly report Nov 9, 2011 Sep 30, 2011
10-Q Quarterly report Aug 9, 2011 Jun 30, 2011
10-Q Quarterly report May 10, 2011 Mar 31, 2011
10-Q Quarterly report Nov 8, 2010 Sep 30, 2010
10-Q Quarterly report Aug 9, 2010 Jun 30, 2010
10-Q Quarterly report May 7, 2010 Mar 31, 2010
10-Q Quarterly report Nov 9, 2009 Sep 30, 2009
10-Q Quarterly report Aug 7, 2009 Jun 30, 2009

Showing 54 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

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Company profile

Industry
Electric Services (SIC 4911)
Listed as
OTTR (Nasdaq)
Fiscal year ends
December 31
Incorporated in
MN
Headquarters
Fergus Falls, MN
SEC filer status
Large accelerated filer
SEC CIK
1466593

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.