Announcement PDF Dundas Minerals Limited Suite 13, 100 Railway Rd T: +61 (08) 9481 0389 ACN: 640 432 819 Daglish, WA 6008 E: admin@dundasminerals.com 29 September 2026 Dear Shareholder, Dundas Minerals Limited Upcoming Annual General Meeting of shareholders – Notice and Proxy Form You are invited to attend Annual General Meeting of shareholders (‘Meeting’) of Dundas Minerals Limited (‘Dundas or the ‘Company’) to be held at Level 8, 216 St Georges Terrace, Perth WA 6000 on Thursday, 29 October 2026 with commencement at 10:30am (WST). In accordance with section 110D(1) of the Corporations Act 2001 (Cth), the Company will not be sending hard copies of the Notice of Annual General Meeting (‘Notice’) to shareholders unless the shareholder has made a valid election to receive such document in hard copy. The Notice can be viewed and downloaded from the Company’s website at https://dundasminerals.com/asx-announcement or the Company’s ASX market announcements platform at www2.asx.com.au (Company’s ASX code: DUN). If you have not elected to receive notices by e-mail, a copy of this letter and your personalised proxy form will be posted out to you for your convenience. Shareholders are encouraged to complete and lodge their proxy forms online at https://investor.automic.com.au/#/loginsah or otherwise in accordance with instructions set out in the proxy form and the Notice. The Notice is important and should be read in its entirety. If you are in doubt as to the course of action you should follow, you should consult your adviser. If you have any difficulties obtaining a copy of the Notice, please Company’s share registry, Automic on 1300 288 664 (within Australia) or +61 2 9698 5414 (from Overseas). Your proxy voting instructions for the Meeting must be received by 10:30am (WST) on Tuesday, 27 October 2026, being not less than 48 hours before the commencement of the Meeting. Any proxy voting received after that time will not be valid for the Meeting. In order to be able to receive electronic communication from the Company in future, please update your details online at https://investor.automic.com.au/#/home and login with your unique shareholder identification number and postcode (or country for overseas residents) that you can locate on your enclosed personalised proxy form. Shareholder communications available online include the Annual Report, Voting Forms, Notice of Meeting, Issue Sponsored Holding Statements, Payment Advices and other company related information. In the event as necessary or appropriate for the Company to make alternative arrangements for the Meeting, information will be provided to the shareholders via Company’s ASX market announcements platform and Dundas’ website. We thank you for your continued support. Yours sincerely, Jonathan Downes Managing Director Dundas Minerals Limited