{"schema_version":"secwatch.filing_event.v1","accession":"0001558370-21-013416","form_type":"8-K","ticker":"MSB","cik":"0000065172","company_name":"MESABI TRUST","filed_at":"2021-10-25T23:59:59+00:00","discovered_at":"2026-05-14T18:04:15.271349+00:00","generated_at":"2026-06-28T18:36:41.067541+00:00","sec_items":["7.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Cliffs plans to shift DR-grade pellet production away from Northshore, threatening Mesabi Trust royalties","bullets":["Cliffs CEO said it will shift DR-grade pellet production from Northshore to Minorca due to 'unreasonable royalty structure'.","Northshore will become a swing operation kept idle at times; Cliffs plans to stop third-party pellet sales.","Cliffs has not notified Mesabi Trust of these changes nor requested royalty changes recently.","Any royalty structure amendment requires approval from trustees and 66 2/3% of certificate holders.","Quarterly royalty payment from Northshore for Q3 2021 due Oct. 30, 2021; summary to be filed later."],"urls":{"canonical":"https://secwatch.observer/filing/0001558370-21-013416","json":"https://secwatch.observer/filing/0001558370-21-013416.json","markdown":"https://secwatch.observer/filing/0001558370-21-013416.md","text":"https://secwatch.observer/filing/0001558370-21-013416.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/65172/000155837021013416/0001558370-21-013416-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/65172/000155837021013416/msb-20211025x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-28T18:36:41.067541+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"}