secwatch.observer — SEC 8-K summary ====================================== Issuer: AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) CIK: 0000880807 Form: 8-K Filed at: 2025-12-23T23:59:59+00:00 Accession: 0001193125-25-330930 Event type: other_material Sentiment: neutral Materiality: 0.20 Item codes: 8.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 AMSC files prospectus supplement for common stock resale by selling stockholders -------------------------------------------------------------------------------- - Prospectus supplement filed Dec 23, 2025 under existing S-3 shelf registration. - Shares to be sold from time to time by certain selling stockholders; no new share issuance by AMSC. - Latham & Watkins legal opinion on share validity filed as Exhibit 5.1. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/880807/000119312525330930/0001193125-25-330930-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/880807/000119312525330930/d36453d8k.htm HTML page: https://secwatch.observer/filing/0001193125-25-330930 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer