ASX Release 17 March 2026 DTM enters into non-binding Term Sheet for sale of Mt Unicorn, Sandy Creek and Tallandoon Projects to Indigo Metals Limited for $7m sale price Dart Mining NL (ASX:DTM) (Company or DTM) is pleased to announce that it has entered into a non-binding term sheet (Agreement) with Indigo Metals Limited (ACN 690 861 771) (Indigo) for the sale of the Company’s Mt Unicorn, Sandy Creek and Tallandoon projects (together, the Projects) to Indigo in connection with Indigo’s proposed initial public offering and listing on the ASX (Proposed Transaction): HIGHLIGHTS 1. Total consideration of $7,000,000 (plus GST), comprising a cash deposit of $200,000 payable 18th March 2026, and the balance of cash at completion as well as Indigo shares issued at IPO price 2. DTM to retain a 2.5% Net Smelter Revenue Royalty on all Antimony production from the Sandy Creek and Tallandoon tenements 3. Transaction is subject to, and is to be completed in connection with, Indigo's proposed IPO and admission to the official list of the ASX 4. Rock Financial Consulting acted as Arranger of the transaction DART MINING’S CHAIRMAN, JAMES CHIRNSIDE, COMMENTED: “The potential sale of the Mt Unicorn, Sandy Creek and Tallandoon Projects to Indigo represents a significant transaction for DTM, potentially delivering consideration of $7,000,000, comprising cash and shares in a company seeking to list on the ASX. DTM is pleased to retain an ongoing economic interest in the Sandy Creek and Tallandoon tenements through a 2.5% Net Smelter Revenue Royalty on Antimony production, ensuring the Company is well-placed to benefit from any future development of these Projects." Under the Agreement, Indigo will acquire 100% of the share capital of Mt Unicorn Holdings Pty Ltd (excluding the Buckland Gold Project) and the exploration licenses comprising the Sandy Creek and Tallandoon Project from Dart Mining. The Agreement is non-binding, save for the payment of the Deposit, and exclusivity and due diligence obligations on DTM, which are binding. Dart Mining NL ABN: 84 119 904 880 Level 6, 412 Collins Street Melbourne VIC 3000 Contact: James Chirnside Email:jchirnside@dartmining.com.au Mobile: +61 447 447 613 Webpage: www.dartmining.com.au LinkedIn: Dart Mining NL Twitter: @DartMining Under the Agreement, the total purchase price for the Projects is $7,000,000 (plus any GST) (Purchase Price), comprising a $200,000 deposit (Deposit), $3,500,000 (less the Deposit) in cash consideration and a proposed issue of shares in Indigo with a deemed value of $3,500,000 (Share Consideration), based on an assumed issue price equal to the proposed issue price of the Indigo shares at admission. Completion of the Proposed Transaction is subject to the satisfaction (or waiver) of certain conditions precedent, including the execution of formal transaction documents, the successful initial public offer of Indigo and corresponding admission to quotation; and any necessary shareholder approvals required by DTM. DTM has not sought confirmation in respect of the potential application of Listing Rules 11.1, 11.2 and 11.4 to the Proposed Transaction. Approved for release by the Board of Directors. For more information contact: James Chirnside Managing Director Dart Mining NL jchirnside@dartmining.com.au +61 419 605 842 InvestorHub Link Terry Bates Director Dart Mining NL tbates@dartmining.com.au