Announcement PDF 604 page 1/4 15 July 2001 Legal/94076170_1 Form 604 Corporations Act 2001 Section 671B Notice of change of interests of substantial holder To Company Name/Scheme Ballard Mining Limited (Ballard) ACN/ARSN ACN 685 311 577 1. Details of substantial holder (1) Name Ballard and Mt Ida AU Pty Ltd ACN 664 555 873 (Mt Ida AU) ACN/ARSN (if applicable) See disclosures above. There was a change in the interests of the substantial holder on 9 January 2026 The previous notice was given to the company on 31 October 2025 The previous notice was dated 31 October 2025 2. Previous and present voting power The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate (2) had a relevant interest (3) in when last required, and when now required, to give a substantial holding notice to the company or scheme, are as follows: Class of securities (4) Previous notice Present notice Person’s votes Voting power (5) Person’ s votes Voting power (5) Fully paid ordinary shares in Ballard (Shares) 65,817,232 17.41% 192,674,634 50.92% 3. Changes in relevant interests Particulars of each change in, or change in the nature of, a relevant interest of the substantial holder or an associate in voting securities of the company or scheme, since the substantial holder was last required to give a substantial holding notice to the company or scheme are as follows: Date of change Person whose relevant interest Nature of change (6) Consideration given in relation to change (7) Class and number of securities affected Person’s votes affected 9 January 2026 Ballard Ballard has ceased to have a relevant interest in the 29,453,592 Shares held by the Escrowed Parties (as defined in Ballard's Prospectus dated 30 May 2025 and Supplementary Prospectus dated 17 June 2025) following the release of such shares from voluntary escrow. Refer to Ballard's ASX announcement dated 5 January 2026 for further information. N/A 29,453,592 Shares 29,453,592 604 page 3/4 15 July 2001 15 July 2001 9 July 2025 Ballard Restrictions on the disposal of shares under the restriction deed between Ballard and Delta Lithium Limited (Delta) in accordance with the ASX Listing Rules result in Ballard having an obligation to disclose such shares in its substantial holder notices pursuant to section 671B of the Corporations Act 2001 (Cth) (Corporations Act). However, Ballard has no rights of acquisition or voting over these shares and does not hold a relevant interest in these shares by virtue of section 609(9B) of the Corporations Act (other than for disclosure purposes under section 671B of the Corporations Act). Further information is available in Ballard's Prospectus dated 30 May 2025 and Supplementary Prospectus dated 17 June 2025. This disclosure was omitted from Ballard's Form 603 Notice of Initial Substantial Holder dated 14 July 2025 due to an oversight and as such Ballard has sought to correct this disclosure in this document. N/A 156,310,994 Shares 156,310,994 4. Present relevant interests Particulars of each relevant interest of the substantial holder in voting securities after the change are as follows: Holder of relevant interest Registered holder of securities Person entitled to be registered as holder (8) Nature of relevant interest (6) Class and number of securities Person’s votes Ballard Delta Delta Restrictions on the disposal of shares under the restriction deed between Ballard and Delta in accordance with the ASX Listing Rules result in Ballard having an obligation to disclose such shares in its substantial holder notices pursuant to section 671B of the Corporations Act. However, Ballard has no rights of acquisition or voting over these shares and does not hold a relevant interest in these shares by virtue of section 609(9B) of the Corporations Act (other than for disclosure purposes under section 671B of the Corporations Act). Further information is available in Ballard's Prospectus dated 30 May 2025 and Supplementary Prospectus dated 17 June 2025. This disclosure was omitted from Ballard's Form 603 Notice of Initial Substantial Holder dated 14 July 2025 due to an oversight and as such Ballard has sought to correct this disclosure in this document. 156,310,994 Shares 156,310,994 604 page 3/4 15 July 2001 15 July 2001 Ballard Aurenne Group Holdings Pty Ltd (Aurenne) Aurenne By virtue of the restrictions on the disposal of Shares under the Subscription Agreement between Ballard and Aurenne dated 26 October 2025, a copy of which is annexed to Ballard's ASIC Form 604 Notice of Change of Interests of Substantial Holder dated 31 October 2025, (Subscription Agreement) Ballard is deemed to have a relevant interest in the 36,363,640 Shares issued to Aurenne under the Subscription Agreement pursuant to section 608(1)(c) of the Corporations Act. 36,363,640 Shares 36,363,640 604 page 3/3 15 July 2001 Legal/94076170_1 5. Changes in association The persons who have become associates (2) of, ceased to be associates of, or have changed the nature of their association (9) with, the substantial holder in relation to voting interests in the company or scheme are as follows: Name and ACN/ARSN (if applicable) Nature of association N/A 6. Addresses The addresses of persons named in this form are as follows: Name Address Ballard and Mt Ida AU Level 2, 18 Richardson Street, West Perth WA 6005 Delta Level 2, 18 Richardson Street, West Perth WA 6005 Aurenne Level 1, 10 Ord Street West Perth WA 6005 Signature print name Loren Falconer capacity On behalf of each substantial holder this Form relates to sign here date 12 January 2026 DIRECTIONS (1) If there are a number of substantial holders with similar or related relevant interests (eg. a corporation and its related corporations, or the manager and trustee of an equity trust), the names could be included in an annexure to the form. If the relevant interests of a group of persons are essentially similar, they may be referred to throughout the form as a specifically named group if the membership of each group, with the names and addresses of members is clearly set out in paragraph 6 of the form. (2) See the definition of "associate" in section 9 of the Corporations Act 2001. (3) See the definition of "relevant interest" in sections 608 and 671B(7) of the Corporations Act 2001. (4) The voting shares of a company constitute one class unless divided into separate classes. (5) The person’s votes divided by the total votes in the body corporate or scheme multiplied by 100. (6) Include details of: (a) any relevant agreement or other circumstances because of which the change in relevant interest occurred. If subsection 671B(4) applies, a copy of any document setting out the terms of any relevant agreement, and a statement by the person giving full and accurate details of any contract, scheme or arrangement, must accompany this form, together with a written statement certifying this contract, scheme or arrangement; and (b) any qualification of the power of a person to exercise, control the exercise of, or influence the exercise of, the voting powers or disposal of the securities to which the relevant interest relates (indicating clearly the particular securities to which the qualification applies). See the definition of "relevant agreement" in section 9 of the Corporations Act 2001. (7) Details of the consideration must include any and all benefits, money and other, that any person from whom a relevant interest was acquired has, or may, become entitled to receive in relation to that acquisition. Details must be included even if the benefit is conditional on the happening or not of a contingency. Details must be included on any benefit paid on behalf of the substantial holder or its associate in relation to the acquisitions, even if they are not paid directly to the person from whom the relevant interest was acquired. (8) If the substantial holder is unable to determine the identity of the person (eg. if the relevant interest arises because of an option) write “unknown’”. (9) Give details, if appropriate, of the present association and any change in that association since the last substantial holding notice.