{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-22-112172","form_type":"8-K","ticker":"PPTA","cik":"0001526243","company_name":"PERPETUA RESOURCES CORP.","filed_at":"2022-10-28T23:59:59+00:00","discovered_at":"2026-05-14T18:03:50.982450+00:00","generated_at":"2026-06-22T22:35:58.662510+00:00","sec_items":["7.01","8.01","9.01"],"event_type":"regulatory","sentiment":"positive","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"USFS selects Perpetua's Stibnite Gold Project as Preferred Alternative in SDEIS","bullets":["USFS published SDEIS on Oct 28, 2022; 75-day comment period ends Jan 10, 2023.","Modified Mine Plan reduces footprint by 13%, mined material by 10%, eliminates 168 acres of waste rock storage.","Project would be only U.S. mined source of antimony; China, Russia, Tajikistan control 90% of global supply.","SDEIS identifies Perpetua's proposed action as Preferred Alternative, a major NEPA milestone.","Project aims to restore legacy environmental conditions and produce gold and antimony."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-22-112172","json":"https://secwatch.observer/filing/0001104659-22-112172.json","markdown":"https://secwatch.observer/filing/0001104659-22-112172.md","text":"https://secwatch.observer/filing/0001104659-22-112172.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1526243/000110465922112172/0001104659-22-112172-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1526243/000110465922112172/tm2229138d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-22T22:35:58.662510+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"}