secwatch.observer — SEC 8-K summary ====================================== Issuer: Otter Tail Corp (OTTR) CIK: 0001466593 Form: 8-K Filed at: 2026-06-05T13:52:28+00:00 Accession: 0001466593-26-000061 Event type: debt Sentiment: neutral Materiality: 0.50 Item codes: 2.03 LLM model: deepseek-v4-flash:cloud@v2 Otter Tail Power issues $70M 6.04% senior notes due 2056 -------------------------------------------------------- - $70M aggregate principal of Series 2026B Notes at 6.04% due June 4, 2056. - Proceeds to fund capital expenditures, refinance existing debt, and general corporate purposes. - Covenant limits: Interest-bearing Debt ≤65% of Total Capitalization; Priority Indebtedness ≤20%. - Notes are senior unsecured obligations of Otter Tail Power Company, a wholly owned subsidiary. - Issuance under Note Purchase Agreement previously reported on March 23, 2026. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000061/0001466593-26-000061-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000061/ottr-20260604.htm HTML page: https://secwatch.observer/filing/0001466593-26-000061 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer