Announcement PDF 13 October 2025 Reflecting on the transition, Mr Zaninovich said “On behalf of the Castle Board, I want to thank Stephen for his tireless efforts and highly professional manner in which he has led the Company, playing a pivotal role in establishing andgrowing the Company’s position in West Africa.TheBoard and I look forward tobuilding on this strong foundation to drive the Company’s exciting next phase of growth and value creation in Côte d’Ivoire and Ghana. I also take this opportunity to thank Brian for his contribution to the Company and his support for the transition.” BOARD AND MANAGEMENT UPDATE Castle Minerals Limited (ASX:CDT) (“Castle” or “the Company”) advises that Executive Chairman, Stephen Stone, has stepped down from his role and from the Board ahead of the upcoming General Meeting on 20 October 2025 (“EGM”) to facilitate an earlier transition as the Company advances exploration and development across its Côte d’Ivoire and Ghana gold projects. As part of this transition, the Company has brought forward the appointments that were previously planned for the General Meeting. Mr Steven Zaninovich has assumed the role of Non-Executive Chairman. Mr Zaninovich is a civil engineer with more than 25 years of experience in project development and management across the resources sector, predominantly in West Africa, and is currently a Non-Executive Director at Aurum Resources Limited (ASX: AUE). His project delivery expertise and leadership experience will be invaluable as Castle continues to progress its project portfolio. Mr Mohamed Niaré will also join the Board as a Non-Executive Director. Operating extensively in Côte d’Ivoire, Mr Niaré will play an important role as Castle’s in-country Project and Business Development Manager. His strong local knowledge, community relationships, and on-ground experience provide the Company with an enduring advantage as exploration momentum builds. Additionally, Brian Thomas has stepped down as a Non-Executive Director whilst Matt Horgan remains a Non-Executive Director. General Meeting Update - Withdrawal of Resolutions 7, 11 & 12 Pursuant to the board and management changes, the Board of Castle advises shareholders that it is withdrawing Resolution 7 (Issue of Performance Rights – Stephen Stone), Resolution 11 (Issue of Shares in Lieu of Directors Fees - Stephen Stone) and Resolution 12 (Issue of Shares in Lieu of Directors Fees – Brian Thomas) referred to in the Notice of Extraordinary General Meeting dated 15 September 2025 (“Notice”) from the business of the Company’s EGM which is to be held at 11.00am (WST) on Monday 20 October 2025. The withdrawal of Resolutions 7, 11 and 12 does not affect the validity of the Notice, the proxy form attached to the Notice or any of the proxy votes already submitted in respect of the remaining items of business at the EGM. All other items of business included in the Notice will be put to shareholders at the EGM. Board and Management Update 2 For and on behalf of the Board of Castle Minerals Limited Steven Zaninovich Chairman admin@castleminerals.com This announcement was authorised for release to the ASX by the Board of Castle Minerals Limited. ABOUT CASTLE MINERALS Castle Minerals Limited (ASX: CDT) is a dedicated West African gold explorer with a commanding, 100 %‑owned and extensive tenure position in northern Ghana and eastern Côte d’Ivoire, an emerging West African exploration frontier in one of the world’s premier gold regions. Within its portfolio in the Upper West Region of Ghana, Castle holds the Kpali and Kandia Gold Projects. The Company recently contracted to earn interests in seven permits (One granted. Six in application) along the Côte d’Ivoire–Ghana border. All projects are located on fertile Birimian greenstone belts, host to numerous multi‑million‑ounce gold mines across Ghana, Côte d’Ivoire and the broader West African region.