{"filing":{"accession_number":"0001104659-26-117441","cik":"0001537137","ticker":"SLI","company_name":"STANDARD LITHIUM LTD.","form":"6-K","filing_date":"2026-10-20","report_date":"2026-10-20","primary_document":"tm2627706d1_6k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1537137/000110465926117441/tm2627706d1_6k.htm"},"events":[{"id":36464,"run_id":33622,"accession_number":"0001104659-26-117441","anchor_item_number":"EX-99.1","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"summary":"Standard Lithium disclosed a Preliminary Economic Assessment (PEA) for its Franklin Project in Texas, prepared by qualified independent engineers and metallurgists. The PEA evaluates the economic viability and technical feasibility of the mineral project, representing a significant operational and strategic milestone for the company's development pipeline.","company_name":"STANDARD LITHIUM LTD.","ticker":"SLI","filing_date":"2026-10-20","form":"6-K","submitted_at":null,"items":[{"id":40882,"accession_number":"0001104659-26-117441","item_number":"EX-99.1","item_title":"tm2627706d1_ex99-1.htm","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"This exhibit is a National Instrument 43-101 Technical Report containing a Preliminary Economic Assessment (PEA) for Standard Lithium's Franklin Project in Texas. The PEA is a material operational and strategic disclosure that evaluates the economic viability and technical feasibility of a mineral project, prepared by qualified independent engineers and metallurgists. While not fitting a discrete event category (not M\u0026A, not a restatement, not an impairment charge), it represents a significant project milestone that would inform investor assessment of the company's development pipeline and capital deployment strategy.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"","ticker":null,"filing_date":""}]},{"id":36465,"run_id":33622,"accession_number":"0001104659-26-117441","anchor_item_number":"EX-99.2","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"summary":"Standard Lithium furnished routine consent letters from six qualified technical professionals (Randal Huffsmith, Mayooran Somanathan, Piers Wendlandt, Ibrahim Karajeh, Randal M. Brush, Robert E. Williams Jr., and Marek Dworzanowski) authorizing the use of their names and technical report sections in the company's Form F-10 registration statement. These are standard administrative disclosures required for securities registration compliance.","company_name":"STANDARD LITHIUM LTD.","ticker":"SLI","filing_date":"2026-10-20","form":"6-K","submitted_at":null,"items":[{"id":40883,"accession_number":"0001104659-26-117441","item_number":"EX-99.2","item_title":"tm2627706d1_ex99-2.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This is a consent letter from Randal Huffsmith (P.E., WSP USA Inc.) authorizing the use of his name and quotations from a technical report in Standard Lithium's Form F-10 registration statement. It is a routine administrative disclosure required for securities registration compliance, not a material business event. The consent itself does not disclose any substantive change in the company's operations, financial condition, or governance structure.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"","ticker":null,"filing_date":""},{"id":40884,"accession_number":"0001104659-26-117441","item_number":"EX-99.3","item_title":"tm2627706d1_ex99-3.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This exhibit is a consent letter from Mayooran Somanathan (P.Eng., WSP Canada Inc.) authorizing the use of his name and technical report sections in Standard Lithium's Form F-10 registration statement. It is a routine administrative disclosure required for securities registration compliance, not a material business event. The consent relates to a technical report on the Franklin Project but does not itself disclose new material information about the project or the company's operations.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"","ticker":null,"filing_date":""},{"id":40885,"accession_number":"0001104659-26-117441","item_number":"EX-99.4","item_title":"tm2627706d1_ex99-4.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This is a consent letter from Piers Wendlandt (P.E., WSP USA Inc.) authorizing the use of his name and quotations from a technical report in Standard Lithium's Form F-10 registration statement. It is a routine administrative disclosure supporting a securities registration filing, not a material event affecting the registrant's business, financial condition, or governance structure.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"","ticker":null,"filing_date":""},{"id":40886,"accession_number":"0001104659-26-117441","item_number":"EX-99.5","item_title":"tm2627706d1_ex99-5.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This exhibit is a consent letter from Ibrahim Karajeh (P.Eng., WSP Canada Inc.) authorizing the use of his name and technical report sections in Standard Lithium's Form F-10 registration statement. It is a routine administrative disclosure required for securities registration compliance, not a material event affecting investor assessment of the registrant's business, financial condition, or operations.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"","ticker":null,"filing_date":""},{"id":40887,"accession_number":"0001104659-26-117441","item_number":"EX-99.6","item_title":"tm2627706d1_ex99-6.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This is a consent letter from Randal M. Brush, a qualified professional engineer, authorizing the use of his name and technical report sections in Standard Lithium's Form F-10 registration statement. It is a routine administrative disclosure required for securities registration compliance, not a material business event. The consent itself does not disclose new information about the company's operations, financial condition, or governance structure.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"","ticker":null,"filing_date":""},{"id":40888,"accession_number":"0001104659-26-117441","item_number":"EX-99.7","item_title":"tm2627706d1_ex99-7.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This exhibit is a consent letter from Robert E. Williams, Jr., a technical expert (P.G., CPG), authorizing the use of his name and sections of a technical report in Standard Lithium's Form F-10 registration statement. This is a routine administrative disclosure required for securities registration compliance, not a material business event. While technical reports support material projects, the consent itself is a procedural formality.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"","ticker":null,"filing_date":""},{"id":40889,"accession_number":"0001104659-26-117441","item_number":"EX-99.8","item_title":"tm2627706d1_ex99-8.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This is a consent letter from Marek Dworzanowski, a qualified professional (EUR ING, CEng), authorizing the use of his name and technical report sections in Standard Lithium's Form F-10 registration statement. It is a routine administrative disclosure required for securities registration compliance, not a material event affecting investor assessment of the registrant's business, financial condition, or operations.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":40882,"accession_number":"0001104659-26-117441","item_number":"EX-99.1","item_title":"tm2627706d1_ex99-1.htm","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"This exhibit is a National Instrument 43-101 Technical Report containing a Preliminary Economic Assessment (PEA) for Standard Lithium's Franklin Project in Texas. The PEA is a material operational and strategic disclosure that evaluates the economic viability and technical feasibility of a mineral project, prepared by qualified independent engineers and metallurgists. While not fitting a discrete event category (not M\u0026A, not a restatement, not an impairment charge), it represents a significant project milestone that would inform investor assessment of the company's development pipeline and capital deployment strategy.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"STANDARD LITHIUM LTD.","ticker":"SLI","filing_date":"2026-10-20"},{"id":40883,"accession_number":"0001104659-26-117441","item_number":"EX-99.2","item_title":"tm2627706d1_ex99-2.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This is a consent letter from Randal Huffsmith (P.E., WSP USA Inc.) authorizing the use of his name and quotations from a technical report in Standard Lithium's Form F-10 registration statement. It is a routine administrative disclosure required for securities registration compliance, not a material business event. The consent itself does not disclose any substantive change in the company's operations, financial condition, or governance structure.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"STANDARD LITHIUM LTD.","ticker":"SLI","filing_date":"2026-10-20"},{"id":40884,"accession_number":"0001104659-26-117441","item_number":"EX-99.3","item_title":"tm2627706d1_ex99-3.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This exhibit is a consent letter from Mayooran Somanathan (P.Eng., WSP Canada Inc.) authorizing the use of his name and technical report sections in Standard Lithium's Form F-10 registration statement. It is a routine administrative disclosure required for securities registration compliance, not a material business event. The consent relates to a technical report on the Franklin Project but does not itself disclose new material information about the project or the company's operations.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-10-20T20:51:59.346691+00:00","company_name":"STANDARD LITHIUM LTD.","ticker":"SLI","filing_date":"2026-10-20"},{"id":40885,"accession_number":"0001104659-26-117441","item_number":"EX-99.4","item_title":"tm2627706d1_ex99-4.htm","event_type":"governance_other","event_domain":"governance","is_material":false,"confidence":0.75,"reasoning":"This is a consent letter from Piers Wendlandt (P.E., WSP USA Inc.) authorizing the use of his name and quotations from a technical report in Standard Lithium's Form F-10 registration statement. 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