{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-025867","form_type":"8-K","ticker":"CLIR","cik":"0001434524","company_name":"ClearSign Technologies Corp","filed_at":"2026-03-10T23:59:59+00:00","discovered_at":"2026-05-14T18:02:35.072316+00:00","generated_at":"2026-05-15T15:49:32.972810+00:00","sec_items":["3.03","5.03","7.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"ClearSign Technologies announces 1-for-10 reverse stock split effective March 16, 2026","bullets":["Reverse stock split ratio 1-for-10, effective 12:01 a.m. ET on March 16, 2026.","Pre-split shares ~54.1M; post-split ~5.41M; authorized shares and par value unchanged.","Split intended to regain compliance with Nasdaq $1.00 minimum bid price requirement.","Fractional shares rounded up; proportionate adjustments to warrants and equity awards.","CUSIP changes to 185064201; trading symbol remains CLIR."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-025867","json":"https://secwatch.observer/filing/0001104659-26-025867.json","markdown":"https://secwatch.observer/filing/0001104659-26-025867.md","text":"https://secwatch.observer/filing/0001104659-26-025867.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1434524/000110465926025867/0001104659-26-025867-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1434524/000110465926025867/tm268062d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T15:49:32.972810+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"da07d7d1e44e796589be565826af40a409c15f35","claim":"ClearSign Technologies Corp: Filed a charter amendment to effect a 1-for-10 reverse stock split (effective 2026-03-16).","evidence_excerpt":"On March 6, 2026, ClearSign Technologies Corporation (the “Company”) filed an amendment (the “Charter Amendment”) to its certificate of incorporation, as amended, with the Secretary of State of Delaware to implement a 1-for-10 reverse stock split, such that every ten (10) shares of the Company’s common stock, par value $0.0001 per share (the “common stock”), will be combined into one (1) issued and outstanding share of common stock, with no change in the $0.0001 par value per share (the “Reverse Stock Split”).","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1434524/000110465926025867/0001104659-26-025867-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"charter amendment"},{"label":"Effective","value":"2026-03-16"}],"fact_type":"governance_change"},{"claim_id":"eb22f1d03384dd3c72278448f636b5c8e92d089c","claim":"ClearSign Technologies Corp reported a fiscal year change.","evidence_excerpt":"the information regarding the Reverse Stock Split (as defined below) set forth below in Item 5.03 of this Current Report on Form 8-K is incorporated by reference herein in its entirety.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1434524/000110465926025867/0001104659-26-025867-index.htm","confidence":0.4,"family_label":"Governance Changes","details":[{"label":"Change","value":"fiscal year change"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}