{"filing":{"accession_number":"0001466593-26-000068","cik":"0001466593","ticker":"OTTR","company_name":"Otter Tail Corp","form":"8-K","filing_date":"2026-08-04","report_date":"2026-08-03","primary_document":"ottr-20260803.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659326000068/ottr-20260803.htm"},"events":[{"id":23966,"run_id":21678,"accession_number":"0001466593-26-000068","anchor_item_number":"2.02","event_type":"earnings_release","event_domain":"financial","is_material":true,"confidence":0.98,"summary":"This is a clear earnings release disclosing Otter Tail Corporation's consolidated financial results for the second quarter of 2026, issued on August 3, 2026. The press release reports quarterly diluted loss per share of $0.18 and adjusted diluted earnings per share of $1.66, updates annual EPS guidance to $3.84–$4.24, and provides detailed segment performance and 2026 outlook. The Item 2.02 disclosure explicitly states the press release is furnished as Exhibit 99.1, which is the standard format for earnings releases in 8-K filings.","company_name":"Otter Tail Corp","ticker":"OTTR","filing_date":"2026-08-04","form":"8-K","submitted_at":null,"items":[{"id":24333,"accession_number":"0001466593-26-000068","item_number":"2.02","item_title":"Results of Operations and Financial Condition","event_type":"earnings_release","event_domain":"financial","is_material":true,"confidence":0.98,"reasoning":"This is a clear earnings release disclosing Otter Tail Corporation's consolidated financial results for the second quarter of 2026, issued on August 3, 2026. The press release reports quarterly diluted loss per share of $0.18 and adjusted diluted earnings per share of $1.66, updates annual EPS guidance to $3.84–$4.24, and provides detailed segment performance and 2026 outlook. The Item 2.02 disclosure explicitly states the press release is furnished as Exhibit 99.1, which is the standard format for earnings releases in 8-K filings.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-05T02:34:32.391064+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":24333,"accession_number":"0001466593-26-000068","item_number":"2.02","item_title":"Results of Operations and Financial Condition","event_type":"earnings_release","event_domain":"financial","is_material":true,"confidence":0.98,"reasoning":"This is a clear earnings release disclosing Otter Tail Corporation's consolidated financial results for the second quarter of 2026, issued on August 3, 2026. The press release reports quarterly diluted loss per share of $0.18 and adjusted diluted earnings per share of $1.66, updates annual EPS guidance to $3.84–$4.24, and provides detailed segment performance and 2026 outlook. The Item 2.02 disclosure explicitly states the press release is furnished as Exhibit 99.1, which is the standard format for earnings releases in 8-K filings.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-05T02:34:32.391064+00:00","company_name":"Otter Tail Corp","ticker":"OTTR","filing_date":"2026-08-04"}]}