Announcement PDF Market Announcement 26 August 2026 26 August 2026 Market Announcement 1/1 ASX Limited ASX Customer Service Centre 131 279 | asx.com.au Castle Minerals Limited (ASX: CDT) – Trading Halt Trading in the securities of Castle Minerals Limited (‘CDT’) will be halted at the request of CDT, pending the release of an announcement by CDT. Unless ASX decides otherwise, the securities will remain in trading halt until the earlier of: • the commencement of normal trading on Friday, 28 August 2026; or • the release of the announcement to the market. CDT’s request for a trading halt is attached below for the information of the market. Issued by ASX Supervision Office Suite 9 / 11 Ventnor Ave, West Perth, WA 6005 | Postal PO Box 437 West Perth, WA 6872 enquiries@castleminerals.com | www.castleminerals.com 26 August 2026 ASX Limited Level 40, Central Park 152-158 St George’s Terrace PERTH WA 6000 By email: tradinghaltsperth@asx.com.au Dear Madam/Sir, Request for Trading Halt – Castle Minerals Limited (ASX: CDT) Castle Minerals Limited (“Company”) requests a trading halt in its shares (ASX: CDT) from the commencement of trading on Wednesday, 26 August 2026. In accordance with ASX Listing Rule 17.1, the Company provides the following information: a) the Company is seeking a trading halt pending an announcement to the market regarding a proposed capital raising (“Announcement”); b) the Company requests the trading halt remain in place until the earlier of commencement of trading on Friday, 28 August 2026, or upon the release of the Announcement; and c) the Company is not aware of any reason why the trading halt should not be granted and is not aware of any other information necessary to inform the market about the trading halt. If you have any questions in relation to this request, please do not hesitate to contact me. Jade Styants Company Secretary Castle Minerals Limited