Exhibit 99.1 Condensed Consolidated Interim Financial Statements (Expressed in US dollars - unaudited) Three and nine months ended September 30, 2025 and 2024 STANDARD LITHIUM LTD. Condensed Consolidated Interim Statements of Financial Position As of September 30, 2025 and December 31, 2024 (Expressed in thousands of US dollars - unaudited) | | Note | September 30, 2025 | | December 31, 2024 | | --- | --- | --- | --- | --- | | ASSETS | | | | | | Current assets | | | | | | Cash | $| 32,062 |$ | 31,177 | | ...