<div id="readability-page-1"><article>Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement. MONGOLIAN MINING CORPORATION (Incorporated in the Cayman Islands with limited liability) (Stock Code: 975) OPERATIONAL UPDATE FOR THE QUARTER ENDED 31 MARCH 2026 HONG KONG, April 16, 2026 (GLOBE NEWSWIRE) -- The board of directors (the “Board”) of Mongolian Mining Corporation (the “Company”, together with its subsidiaries, collectively the “Group”) wishes to announce the unaudited operational update for the quarter ended 31 March 2026. The comparative figures for the quarter ended 31 March 2025 and the quarter ended 31 December 2025 are also disclosed in this announcement (if and as applicable). The Company is the largest internationally listed private mining company with operations focused on and located in Mongolia. The Group has consolidated a diversified business portfolio to develop and operate coking (metallurgical) coal, gold, silver, copper, and other non-ferrous metals mining assets in southern and western regions of Mongolia. Coking (metallurgical) coal operations The Group is the largest producer and exporter of washed coking coal products in Mongolia. Energy Resources LLC (“ER”), its wholly-owned subsidiary, operates the Ukhaa Khudag (“UHG”) coking coal mine, and Khangad Exploration LLC (“KEX”), the Group’s majority-owned subsidiary, operates the Baruun Naran (“BN”) coking coal mine, both located in Umnugobi aimag (province), Mongolia. The main operational data for the Group’s coking (metallurgical) coal operations that comprising combined output delivered by ER from the UHG mine and by KEX from the BN mine for the quarter ended 31 March 2026 are summarised in Table 1 below. Table 1. Main operational data for coking coal operations for the quarter ended 31 March 2026: <table><tbody><tr><td colspan="2"> </td><td>The quarter</td><td>The quarter</td><td colspan="2">Quarter-on-quarter</td><td>The quarter</td><td colspan="2">Year-on-year</td></tr><tr><td>Item</td><td>Unit</td><td>ended 31 March 2026</td><td>ended 31 December 2025</td><td colspan="2">(“QoQ”) change (%)</td><td>ended 31 March 2025</td><td colspan="2">(“YoY”) change (%)</td></tr><tr><td> </td><td> </td><td> </td><td> </td><td colspan="2"> </td><td> </td><td colspan="2"> </td></tr><tr><td>ROM coal mined</td><td>kt</td><td>4,846.0</td><td>3,963.6</td><td>+22</td><td>%</td><td>3,673.4</td><td>+32</td><td>%</td></tr><tr><td>ROM coking coal processed</td><td>kt</td><td>3,916.3</td><td>3,858.6</td><td>+1</td><td>%</td><td>3,749.5</td><td>+4</td><td>%</td></tr><tr><td>Washed coking coal produced</td><td>kt</td><td>2,276.9</td><td>2,350.7</td><td>-3</td><td>%</td><td>2,110.0</td><td>+8</td><td>%</td></tr><tr><td>Washed coking coal sold</td><td>kt</td><td>2,558.4</td><td>2,578.1</td><td>-1</td><td>%</td><td>1,600.4</td><td>+60</td><td>%</td></tr><tr><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td></tr></tbody></table> Gold and metals operations The Group is 50.0% equity holder in Erdene Mongol LLC (“EM”), which owns and operates Bayan Khundii (“BKH”) gold mine, and 50.5% equity holder in Universal Copper LLC, which develops White Hill copper deposit and Urkhut silver deposit, all located in Bayankhongor aimag (province), Mongolia. The main operational data for the Group’s gold and metals operations that comprising output delivered by EM from the BKH mine for the quarter ended 31 March 2026 are summarised in Table 2 below. The weighted average gold price per ounce (“oz”) for each quarter was calculated using actual transaction prices denominated in MNT (local currency) and applicable MNT/USD exchange rates. Table 2. Main operational data for gold and metals operations for the quarter ended 31 March 2026: <table><tbody><tr><td colspan="2"> </td><td>The quarter</td><td>The quarter</td><td colspan="2"> </td><td>The quarter</td><td> </td></tr><tr><td>Item</td><td>Unit</td><td>ended 31 March 2026</td><td>ended 31 December 2025</td><td colspan="2">QoQ change (%)</td><td>ended 31 March 2025</td><td>YoY change (%)</td></tr><tr><td> </td><td> </td><td> </td><td> </td><td colspan="2"> </td><td> </td><td> </td></tr><tr><td>Ore mined</td><td>kt</td><td>154.8</td><td>231.8</td><td>-33</td><td>%</td><td>NA</td><td>NA</td></tr><tr><td>Ore processed</td><td>kt</td><td>150.8</td><td>118.4</td><td>+27</td><td>%</td><td>NA</td><td>NA</td></tr><tr><td>Gold sold</td><td>oz</td><td>8,527</td><td>7,092</td><td>+20</td><td>%</td><td>NA</td><td>NA</td></tr><tr><td>Gold price</td><td>USD/oz</td><td>4,872</td><td>4,173</td><td>+17</td><td>%</td><td>NA</td><td>NA</td></tr><tr><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td></tr></tbody></table> Important notice Data provided in this announcement are all rounded and derived from the internal records of the Group and are intended to give investors an overview of the Group’s operations in a timely manner and may differ from the data disclosed in periodic reports of the Company. The aforesaid operational data are not an express or implied forecast or guarantee in respect of the Company’s future operating conditions. In addition, various factors may affect results, including (but not limited to) force majeure events, changes in market conditions and regulatory interferences, as such material differences may exist in the operational data published from quarter to quarter. Investors should note that undue reliance on or use of the above information may cause investment risks. For and on behalf of the Board Mongolian Mining Corporation Odjargal Jambaljamts Chairman Hong Kong, 17 April 2026 As at the date of this announcement, the board of directors of the Company consists of Mr. Odjargal Jambaljamts and Dr. Battsengel Gotov, being the executive directors of the Company, Ms. Enkhtuvshin Gombo and Mr. Ariunbayar Byambadorj, being the non-executive directors of the Company, and Mr. Chan Tze Ching, Ignatius, Ms. Delgerjargal Bayanjargal and Dr. Tsend-Ayush Tuvshintur, being the independent non-executive directors of the Company. <img src="https://imageproxy.pbkrs.com/https://www.globenewswire.com/newsroom/ti/query-bmY9T1RZNU1UYzVOQ00zTlRRd016UTNJekl5T1RRek9ETT0?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="1" height="1" original-src="https://imageproxy.pbkrs.com/https://www.globenewswire.com/newsroom/ti/query-bmY9T1RZNU1UYzVOQ00zTlRRd016UTNJekl5T1RRek9ETT0"/> <img src="https://imageproxy.pbkrs.com/https://ml.globenewswire.com/media/ZTlkMjM4MWMtODc1MC00MjRlLTk1YmYtMDJjOTI5ZGFkNTc3LTEzMDU5MzMtMjAyNi0wNC0xNy1lbg==/tiny/Mongolian-Mining-Corporation.png?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="1" height="1" original-src="https://imageproxy.pbkrs.com/https://ml.globenewswire.com/media/ZTlkMjM4MWMtODc1MC00MjRlLTk1YmYtMDJjOTI5ZGFkNTc3LTEzMDU5MzMtMjAyNi0wNC0xNy1lbg==/tiny/Mongolian-Mining-Corporation.png"/> <pre>Contact: investor@mmc.mn</pre></article></div>

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Mongolian Mining Corporation has released its operational update for the quarter ending March 31, 2026. The company reported a 22% increase in ROM coal mined compared to the previous quarter and a 32% increase year-on-year. Coking coal production saw a slight decrease of 3%, while sales rose by 60% year-on-year. In gold and metals operations, gold sold increased by 20% compared to the previous quarter, with a 17% rise in gold price per ounce. The data is derived from internal records and may differ from periodic reports.

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Mongolian Mining Corporation Operational Update for the Quarter Ended 31 March 2026 | MOGLF Stock News