{"schema_version":"secwatch.filing_event.v1","accession":"0001466593-25-000091","form_type":"8-K","ticker":"OTTR","cik":"0001466593","company_name":"Otter Tail Corp","filed_at":"2025-06-05T23:59:59+00:00","discovered_at":"2026-05-14T18:02:48.379370+00:00","generated_at":"2026-05-19T21:43:08.573622+00:00","sec_items":["8.01"],"event_type":"regulatory","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Otter Tail Power files $5.7M annual revenue increase request with South Dakota PUC","bullets":["Requested net annual revenue increase of $5.7M (12.5%) from South Dakota general rates, filed June 4, 2025.","Proposed rate of return on rate base 8.29%, ROE 10.8%, equity ratio 53.54% of total capital.","Changes include moving cost/investment recovery from riders into base rates.","Rates effective upon SDPUC final disposition or 180 days from filing, subject to refunds."],"urls":{"canonical":"https://secwatch.observer/filing/0001466593-25-000091","json":"https://secwatch.observer/filing/0001466593-25-000091.json","markdown":"https://secwatch.observer/filing/0001466593-25-000091.md","text":"https://secwatch.observer/filing/0001466593-25-000091.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1466593/000146659325000091/0001466593-25-000091-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1466593/000146659325000091/ottr-20250604.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-19T21:43:08.573622+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}