Mr. Ernest Mast reports

DORE COPPER ANNOUNCES UP TO $3 MILLION NON-BROKERED PRIVATE PLACEMENT OF COMMON SHARES AND FLOW-THROUGH SHARES

Dore Copper Mining Corp. has arranged a non-brokered private placement of: (i) up to 8.05 million common shares in the capital of the corporation at a price of 20 cents per common share for gross proceeds of up to $1.61-million; (ii) up to 833,336 common shares in the capital of the corporation that will qualify as flow-through shares within the meaning of Subsection 66(15) of the Income Tax Act (Canada) and Section 359.1 of the Taxation Act (Quebec) at a price of 24 cents per traditional flow-through share for gross proceeds of up to $200,000.64; and (iii) up to 2,875,000 common shares in the capital of the corporation that will qualify as flow-through shares within the meaning of Subsection 66(15) of the Income Tax Act (Canada) and Section 359.1 of the Taxation Act (Quebec) at a price of 41.5 cents per charitable flow-through share for gross proceeds of up to $1,193,125, for aggregate gross proceeds to the corporation of up to $3,003,125.64.

The net proceeds from the sale of the common shares will be used for exploration and development activities and for working capital and general corporate purposes. The corporation will use an amount equal to the gross proceeds received by the corporation from the sale of the flow-through shares, pursuant to the provisions in the Income Tax Act (Canada), to incur, directly or indirectly, expenses related to the corporation's projects in Quebec, on or before Dec. 31, 2024, that are eligible Canadian exploration expenses (as defined in the Income Tax Act (Canada)), which, in the case of the traditional flow-through shares, will qualify as flow-through mining expenditures (as defined in the Income Tax Act (Canada)), and, in the case of the charitable flow-through shares, will qualify as flow-through critical mineral mining expenditures (as defined in the Income Tax Act (Canada)), and renounce all the qualifying expenditures in favour of the applicable subscribers of the flow-through shares, effective Dec. 31, 2023. In addition, with respect to Quebec resident subscribers who are eligible individuals under the Taxation Act (Quebec), the Canadian exploration expenses will also qualify for inclusion in the exploration base relating to certain Quebec exploration expenses within the meaning of Section 726.4.10 of the Taxation Act (Quebec) and for inclusion in the exploration base relating to certain Quebec surface mining expenses or oil and gas exploration expenses within the meaning of Section 726.4.17.2 of the Taxation Act (Quebec).

In connection with the offering, certain arm's-length parties may receive a cash finder's fee payment and/or warrants to purchase common shares in the capital of the corporation in consideration of securities that are sold to subscribers introduced by such parties. Any cash finder's fee payment and/or warrants will be subject to the approval of, and will be issued in accordance with the rules of, the TSX Venture Exchange.

The offering is expected to close on or about June 1, 2023, or such other date as the corporation may determine, and is subject to certain conditions, including, but not limited to, the receipt of all necessary regulatory and other approvals, including the acceptance of the TSX Venture Exchange.

The offering will be made by way of a private placement in each of the provinces of Canada pursuant to applicable exemptions from the prospectus requirements and, in the case of the common shares, such other jurisdictions, in each case in accordance with all applicable laws, provided that no prospectus, registration statement or other similar document is required to be filed in such jurisdiction. The securities issued under the offering will be subject to a four-month hold period under applicable Canadian securities laws.

About Dore Copper Mining Corp.

Dore Copper aims to be the next copper producer in Quebec with an initial production target of 50 million pounds of copper equivalent annually by implementing a hub-and-spoke operation model with multiple high-grade copper-gold assets feeding its centralized Copper Rand mill. The corporation has delivered its preliminary economic assessment in May, 2022, and is proceeding with a feasibility study.

The corporation has consolidated a large land package in the prolific Lac Dore/Chibougamau and Joe Mann mining camps that has historically produced 1.6 billion pounds of copper and 4.4 million ounces of gold. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the corporation's Copper Rand mill.

We seek Safe Harbor.