Otter Tail Corporation
Otter Tail Corporation (OTTR) SEC Filings & 10-K Annual Reports
SEC EDGAR regulatory submissions (10-K, 10-Q, 8-K), latest forms, and full filing history — quick links to financials and earnings below.
SEC EDGAR · data.sec.gov · CIK 0001466593 · OTTR · NASDAQ · as of Jun 8, 2026
Filing snapshot
Source: SEC EDGAR (data.sec.gov) · CIK 0001466593 · Updated hourly · Not investment advice
Latest Annual Report
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SEC Filing History
About SEC Filings & 10-K Annual Reports
Otter Tail Corporation (NASDAQ: OTTR) has submitted 868 documents to the U.S. Securities and Exchange Commission (SEC) since its IPO in 1990. As a Utilities sector company with CIK 0001466593, all filings are publicly accessible via the EDGAR database at no cost.
The annual 10-K report is Otter Tail Corporation's most comprehensive regulatory disclosure. The most recent Otter Tail Corporation 10-K was filed on 2026-02-23 for fiscal year ending 2026. Historical OTTR 10-K annual reports are available from 2009 through 2026.
Investors researching Otter Tail Corporation SEC filings can access 10-K annual reports, quarterly 10-Q reports, material event 8-K filings, and proxy statements directly from the links above. All documents are sourced from the official SEC EDGAR system.
Frequently Asked Questions
OTTR SEC Filings · 8 questionsOtter Tail Corporation (OTTR) SEC filings are publicly available on this page and on the official SEC EDGAR database at sec.gov. You can browse all 868 filings and access original documents at no cost. Otter Tail Corporation's CIK is 0001466593.