{"schema_version":"secwatch.filing_event.v1","accession":"0001213900-26-058997","form_type":"8-K","ticker":"ONCO","cik":"0001782107","company_name":"Onconetix, Inc.","filed_at":"2026-05-19T20:05:26+00:00","discovered_at":"2026-05-19T20:06:00.380111+00:00","generated_at":"2026-05-19T20:06:47.895485+00:00","sec_items":["5.03","8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Onconetix announces 1-for-10 reverse stock split effective May 21, 2026 to meet Nasdaq bid price rule","bullets":["Board fixed 1-for-10 reverse split ratio; effective 12:01 a.m. ET on May 21, 2026.","Reverse split reduces outstanding shares from ~11.4M to ~1.14M; no change in authorized shares or par value.","Split intended to regain compliance with Nasdaq $1.00 minimum bid price rule for continued listing.","No fractional shares issued; holders of fractional shares will receive cash compensation based on closing price on May 20, 2026.","Common stock continues trading on Nasdaq Capital Market under symbol ONCO with new CUSIP 68237Q 401."],"urls":{"canonical":"https://secwatch.observer/filing/0001213900-26-058997","json":"https://secwatch.observer/filing/0001213900-26-058997.json","markdown":"https://secwatch.observer/filing/0001213900-26-058997.md","text":"https://secwatch.observer/filing/0001213900-26-058997.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1782107/000121390026058997/0001213900-26-058997-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1782107/000121390026058997/ea0291543-8k_onconetix.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-19T20:06:47.895485+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":"eac92f135eb0603e05a1fff2a3f784adef65beea","claim":"Onconetix, Inc.: Amended charter to effect a 1-for-10 reverse stock split of common stock, effective May 21, 2026 (effective 2026-05-21).","evidence_excerpt":"On May 20, 2026, the Company expects to file an amendment to its Charter with the Secretary of State of the State of Delaware (the “Amendment”) to effect 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/1782107/000121390026058997/0001213900-26-058997-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"charter amendment"},{"label":"Effective","value":"2026-05-21"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}