secwatch.observer — SEC 8-K summary ====================================== Issuer: ClearSign Technologies Corp (CLIR) CIK: 0001434524 Form: 8-K Filed at: 2026-05-28T20:19:02+00:00 Accession: 0001104659-26-067517 Event type: regulatory Sentiment: neutral Materiality: 0.30 Item codes: 8.01, 9.01 LLM model: deepseek-v4-flash:cloud ClearSign Technologies suspends ATM prospectus supplement for $10.39 million common stock offering; no shares sold -------------------------------------------------------------------------------- - On May 26, 2026, ClearSign notified H.C. Wainwright of suspension and termination of the ATM prospectus supplement filed July 17, 2025. - The ATM program allowed sale of up to $10.39 million in common stock, but no shares were sold before suspension. - The ATM Agreement remains in effect, but no sales will occur until a new prospectus supplement is filed. - Termination relates to shelf registration statement Form S-3 (File No. 333-288736) effective July 28, 2025. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465926067517/0001104659-26-067517-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1434524/000110465926067517/tm2615697d1_8k.htm HTML page: https://secwatch.observer/filing/0001104659-26-067517 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer