secwatch.observer — SEC 8-K summary ====================================== Issuer: AVISTA CORP (AVA) CIK: 0000104918 Form: 8-K Filed at: 2023-01-17T23:59:59+00:00 Accession: 0000950170-23-000787 Event type: m_and_a Sentiment: neutral Materiality: 0.75 Item codes: 1.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Avista abandons 15% Colstrip Units 3&4 interest to NorthWestern with no cash consideration -------------------------------------------------------------------------------- - Avista abandons 15% undivided interest in Colstrip Units 3&4 to NorthWestern; no purchase price is paid. - Transaction scheduled to close December 31, 2025; Avista covers operating and capital costs until closing. - Avista retains Colstrip transmission system assets and voting rights on remediation via a vote sharing agreement. - Driven by Washington Clean Energy Transformation Act requiring coal-free electricity for retail customers after 2025. - Other Colstrip owners have 90-day right of first refusal; deal subject to regulatory approvals and new coal supply agreement. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/104918/000095017023000787/0000950170-23-000787-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/104918/000095017023000787/ava-20230116.htm HTML page: https://secwatch.observer/filing/0000950170-23-000787 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer