{"filing":{"accession_number":"0001628280-26-063642","cik":"0001172724","ticker":"GFIOF","company_name":"GOLD FIELDS LTD","form":"6-K","filing_date":"2026-09-28","report_date":"2026-09-28","primary_document":"sens28september2026.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1172724/000162828026063642/sens28september2026.htm"},"events":[{"id":35249,"run_id":32461,"accession_number":"0001628280-26-063642","anchor_item_number":"EX-99.1","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"summary":"Gold Fields submitted a non-binding indicative proposal on 13 September 2026 to acquire 100% of Northern Star Resources Ltd by scheme of arrangement for A$27.00 per share (0.3125 Gold Fields shares plus A$7.25 cash per Northern Star share), with estimated synergies of US$4–5 billion. Although the Northern Star Board declined further engagement on 24 September 2026, this disclosure of entry into material acquisition discussions with specific terms, valuation, and strategic rationale constitutes a reportable M\u0026A activity event under the taxonomy.","company_name":"GOLD FIELDS LTD","ticker":"GFIOF","filing_date":"2026-09-28","form":"6-K","submitted_at":null,"items":[{"id":39235,"accession_number":"0001628280-26-063642","item_number":"EX-99.1","item_title":"finalgoldfieldsproposalf.htm","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"Gold Fields submitted a non-binding indicative proposal on 13 September 2026 to acquire 100% of Northern Star Resources Ltd by scheme of arrangement for A$27.00 per share (0.3125 Gold Fields shares plus A$7.25 cash per Northern Star share), with estimated synergies of US$4–5 billion. Although the Northern Star Board declined further engagement on 24 September 2026, this disclosure of entry into material acquisition discussions with specific terms, valuation, and strategic rationale constitutes a reportable M\u0026A activity event under the taxonomy.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-28T10:08:26.850745+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":39235,"accession_number":"0001628280-26-063642","item_number":"EX-99.1","item_title":"finalgoldfieldsproposalf.htm","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"Gold Fields submitted a non-binding indicative proposal on 13 September 2026 to acquire 100% of Northern Star Resources Ltd by scheme of arrangement for A$27.00 per share (0.3125 Gold Fields shares plus A$7.25 cash per Northern Star share), with estimated synergies of US$4–5 billion. Although the Northern Star Board declined further engagement on 24 September 2026, this disclosure of entry into material acquisition discussions with specific terms, valuation, and strategic rationale constitutes a reportable M\u0026A activity event under the taxonomy.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-28T10:08:26.850745+00:00","company_name":"GOLD FIELDS LTD","ticker":"GFIOF","filing_date":"2026-09-28"}]}