{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-21-025312","form_type":"8-K","ticker":"PUBC","cik":"0001575858","company_name":"Purebase Corp","filed_at":"2021-10-13T23:59:59+00:00","discovered_at":"2026-05-14T18:04:13.107291+00:00","generated_at":"2026-06-28T21:07:53.457217+00:00","sec_items":["1.01","3.02","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Purebase cancels $50M convertible note, grants US Mine option to buy 116M shares at $0.38/share","bullets":["Cancelled $50M convertible promissory note issued to US Mine for metakaolin mining rights.","Issued option to US Mine to purchase 116M common shares at $0.38/exercise price (closing price on Oct 6, 2021).","Option vests: 58M shares on Apr 6, 2022; 29M shares on Oct 6, 2022; 29M shares on Apr 6, 2023; expires Apr 6, 2028.","Related-party: CEO A. Scott Dockter and director John Bremer are manager-members of US Mine; they abstained from board vote."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-21-025312","json":"https://secwatch.observer/filing/0001493152-21-025312.json","markdown":"https://secwatch.observer/filing/0001493152-21-025312.md","text":"https://secwatch.observer/filing/0001493152-21-025312.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1575858/000149315221025312/0001493152-21-025312-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1575858/000149315221025312/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-28T21:07:53.457217+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}