{"filing":{"accession_number":"0001171843-26-005911","cik":"0001537137","ticker":"SLI","company_name":"STANDARD LITHIUM LTD.","form":"6-K","filing_date":"2026-09-08","report_date":"2026-09-08","primary_document":"f6k_090426.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1537137/000117184326005911/f6k_090426.htm"},"events":[{"id":31729,"run_id":29131,"accession_number":"0001171843-26-005911","anchor_item_number":"EX-99.1","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"summary":"This press release announces positive results of a Preliminary Economic Assessment (PEA) for the Franklin Project, a greenfield lithium extraction facility in East Texas. The disclosure presents material operational and strategic milestones—a $5.0 billion after-tax NPV, 24% IRR, 70,000 tpa production capacity, and upgraded mineral resources—that would affect a reasonable investor's assessment of the company's project pipeline and value creation potential. While not a discrete M\u0026A transaction, earnings release, or governance event, this represents a significant operational/strategic development in project advancement that warrants classification as a material operational event.","company_name":"STANDARD LITHIUM LTD.","ticker":"SLI","filing_date":"2026-09-08","form":"6-K","submitted_at":null,"items":[{"id":34698,"accession_number":"0001171843-26-005911","item_number":"EX-99.1","item_title":"exh_991.htm","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"This press release announces positive results of a Preliminary Economic Assessment (PEA) for the Franklin Project, a greenfield lithium extraction facility in East Texas. The disclosure presents material operational and strategic milestones—a $5.0 billion after-tax NPV, 24% IRR, 70,000 tpa production capacity, and upgraded mineral resources—that would affect a reasonable investor's assessment of the company's project pipeline and value creation potential. While not a discrete M\u0026A transaction, earnings release, or governance event, this represents a significant operational/strategic development in project advancement that warrants classification as a material operational event.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-08T10:15:38.327628+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":34698,"accession_number":"0001171843-26-005911","item_number":"EX-99.1","item_title":"exh_991.htm","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"This press release announces positive results of a Preliminary Economic Assessment (PEA) for the Franklin Project, a greenfield lithium extraction facility in East Texas. The disclosure presents material operational and strategic milestones—a $5.0 billion after-tax NPV, 24% IRR, 70,000 tpa production capacity, and upgraded mineral resources—that would affect a reasonable investor's assessment of the company's project pipeline and value creation potential. While not a discrete M\u0026A transaction, earnings release, or governance event, this represents a significant operational/strategic development in project advancement that warrants classification as a material operational event.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-08T10:15:38.327628+00:00","company_name":"STANDARD LITHIUM LTD.","ticker":"SLI","filing_date":"2026-09-08"}]}