secwatch.observer — SEC 8-K summary ====================================== Issuer: AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) CIK: 0000880807 Form: 8-K Filed at: 2026-09-21T20:07:23+00:00 Accession: 0001437749-26-030822 Event type: leadership Sentiment: neutral Materiality: 0.20 Item codes: 5.02 LLM model: deepseek-v4-flash:cloud@v2 AMSC director Barbara G. Littlefield resigns from board effective Sept. 18, 2026 -------------------------------------------------------------------------------- - Barbara G. Littlefield notified the AMSC Board of her resignation on Sept. 17, 2026. - Resignation takes effect at 12:00 p.m. ET on Friday, Sept. 18, 2026. - No reason for departure or successor appointment was disclosed in the filing. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/880807/000143774926030822/0001437749-26-030822-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/880807/000143774926030822/amsc20260921_8k.htm HTML page: https://secwatch.observer/filing/0001437749-26-030822 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer