Announcement PDF 21 July 2025 Dear Shareholder HORIZON GOLD LIMITED ENTITLEMENT OFFER – NOTICE TO INELIGIBLE SHAREHOLDERS On 21 July 2025 Horizon Gold Limited (Company or HRN) announced a non-renounceable pro-rata entitlement offer of new fully paid ordinary shares in the Company (New Shares) to raise approximately $7.0 million (before costs) (Entitlement Offer) with an offer price of $0.48 per share (Offer Price). This letter is to inform you about the Entitlement Offer and to explain to you that as at today's date, as a shareholder with a registered address not in Australia, New Zealand or Bermuda, you will not be able to subscribe for New Shares under the Entitlement Offer. If your registered address remains the same on the Record Date of 24 July 2025, you will not be eligible to participate in the Entitlement Offer. This letter is not an offer to issue New Shares to you, nor an invitation for you to apply for New Shares. You are not required to do anything in response to this letter. Entitlement Offer Overview The Entitlement Offer consists of an offer to eligible shareholders (as described below, Eligible Shareholders) to subscribe for one (1) New Share for every ten (10) existing fully paid ordinary shares held in the Company (Entitlement) at 5.00pm (AWST) on Thursday, 24 July 2025 (Record Date) at the Offer Price of $0.48 per New Share. The Entitlement Offer will not be underwritten. The Entitlement Offer is being made in accordance with section 708AA of the Corporations Act 2001 (Cth) (Corporations Act) as modified by the Australian Securities and Investments Commission (ASIC) Corporations (Non-Traditional Rights Issues) Instrument 2016/84, meaning that no prospectus needs to be prepared. New Shares issued under the Entitlement Offer will rank equally with existing fully paid ordinary shares in the Company from issue. An offer document in relation to the Entitlement Offer has been lodged with ASX and will be despatched to Eligible Shareholders on or around 29 July 2025. Eligibility criteria Eligible Shareholders are shareholders of the Company who: 1. are registered as holders of existing fully paid ordinary shares in the Company as at 5.00pm (AWST) on the Record Date; 2. have a registered address on the Company’s share register in Australia, New Zealand or Bermuda; 3. are not in the United States and are not acting (including as nominee or custodian) for the account or benefit of a person in the United States (to the extent such persons hold Shares for the account or benefit of a person in the United States); and 4. are eligible under all applicable securities laws to receive an offer under the Entitlement Offer without any requirement for a prospectus to be lodged or registered. Shareholders who are not Eligible Shareholders are Ineligible Shareholders. Horizon Gold Limited ACN: 614 175 923 Suite 8, Level 3, 47 Havelock Street, West Perth WA 6005 | PO Box 39, West Perth WA 6872 Telephone: +61 8 6331 6092 | Email: info@horizongold.com.au | Website: www.horizongold.com.au The restrictions upon eligibility under the Entitlement Offer arise because of the legal and regulatory requirements in countries other than Australia, New Zealand or Bermuda and the potential costs to the Company of complying with these legal and regulatory requirements compared with the relatively small number of shareholders in those countries, the relatively small number of existing HRN ordinary shares they hold and the relatively low value of New Shares to which those shareholders would otherwise be entitled. The Company has determined, pursuant to Rule 7.7.1(a) of the ASX Listing Rules and section 9A(3)(a) of the Corporations Act, that it would be unreasonable to make or extend offers to shareholders in certain countries under the Entitlement Offer. Unfortunately, according to our records, as at the date of this letter, you do not satisfy the eligibility criteria for an Eligible Shareholder stated above. If your registered address remains unchanged on the Record Date, you will not be eligible to participate in the Entitlement Offer. Accordingly, in compliance with ASX Listing Rule 7.7.1(b) and section 9A(3)(b) of the Corporations Act, the Company wishes to advise you that it will not be extending the Entitlement Offer to you and you will not be able to subscribe for New Shares under the Entitlement Offer. You will not be sent the documents relating to the Entitlement Offer. If you have any queries in relation to the Entitlement Offer, please do not hesitate to contact the Company Secretary +61 8 6331 6092. Yours faithfully Trevor O’Connor Company Secretary Important Notices This notice is issued by Horizon Gold Limited. This notice is not a prospectus or offering document under Australian law or under any other law. It is for information purposes only and does not constitute an offer, invitation or recommendation to subscribe for, retain or purchase any securities in HRN in any jurisdiction. This letter does not constitute financial product advice and does not and will not form part of any contract for the acquisition of HRN ordinary shares. This letter does not constitute an offer to sell, or the solicitation of an offer to buy, any securities in the United States or any other country. No action has been or will be taken to register, qualify or otherwise permit a public offering of the New Shares in any jurisdiction outside Australia, New Zealand or Bermuda. In particular, the New Shares have not been, and will not be, registered under the U.S. Securities Act of 1933 or the securities laws of any state or other jurisdiction of the United States. Accordingly, the New Shares may not be offered or sold to persons in the United States except in a transaction exempt from, or not subject to, the registration requirements of the U.S. Securities Act and applicable U.S. state securities laws. The provision of this document is not, and should not be considered as, a securities recommendation or financial product advice. The information in this document is general information only, and does not take into account your individual objectives, taxation position, financial situation or needs. Before acting on the information, you should consider the appropriateness of the information, having regard to your objectives, taxation position, financial situation or needs. If you are unsure of your position, please contact your stockbroker, accountant, taxation adviser, financial adviser or other professional adviser. Horizon Gold Limited ACN: 614 175 923 Suite 8, Level 3, 47 Havelock Street, West Perth WA 6005 | PO Box 39, West Perth WA 6872 Telephone: +61 8 6331 6092 | Email: info@horizongold.com.au | Website: www.horizongold.com.au