👷‍♂️ @erdene_llc's latest “One Day at the Mine” episode features T. Nyamsuren, Senior Mine Supervisor, who coordinates daily mining operations and leads the team on the ground. 👉 What does a typical day look like for him?Follow along as we spend a day with Nyamsuren and get a closer look at his work. 👷‍♂️ Start safe. Finish safe.

U. Nangil: “Planting trees is truly rewarding.” The first episode of “One Day at the Mine” series features O. Nangil, Environmental Technician at @erdene_llc. What does a typical day look like for someone dedicated to protecting and restoring the environment? Follow Nangil through a day at work and discover the care and commitment behind environmental stewardship at the Bayan Khundii Gold Mine.

Та бүхэндээ Үндэсний их баяр наадмын мэнд хүргэе! Happy Naadam Festival!

Happy Canada Day! From all of us at Erdene, we extend our warmest wishes to our employees, investors, partners, and communities. Thank you for your continued support and partnership.

Over the past year, Erdene has beaten the odds, making the transformation from explorer to producer. This milestone was reached a mere ten years after our discovery of high-grade gold in a “Rich Valley”, making this one of the most rapid transitions in our industry. In a world of rising demand for precious and base metals, the Khundii Minerals District, with its high-quality mineral endowment, positions Erdene for long-term success. We are excited for the future and look forward to sharing the benefits of our work with all stakeholders in the years ahead. Thank you to our shareholders, partners, and team for helping us reach this historic point. Letter to Shareholders is here. lnkd.in/d26nWe3h Өнгөрсөн жил манай компанийн хувьд онцгой амжилтын жил байлаа. Бид Монгол Улсын баруун өмнөд бүсэд орших өндөр агуулга бүхий алтны ордыг амжилттай хөгжүүлж, “Баянхөндий” алтны төслийг нээн илрүүлснээс хойш арван жилийн хугацаанд олборлолтын шат руу хөгжүүлсэн нь салбартаа хамгийн богино хугацаанд хэрэгжсэн төслүүдийн нэг болж байна. Үнэт болон суурь металлын эрэлт дэлхий дахинд өсөн нэмэгдэж буй энэ үед өндөр чанартай эрдсийн нөөцөөр баялаг Хөндий Эрдсийн Дүүрэг нь Эрдэнэ Ресурсийн урт хугацааны амжилтын үндэс болж байна. Бид ирээдүйгээ өөдрөгөөр төсөөлөхийн зэрэгцээ бүтээж буй үнэ цэн, үр өгөөжөө нийт оролцогч талуудтайгаа хамтдаа хуваалцахдаа баяртай байна. Эрдэнэ Ресурсийн хамт олны өмнөөс хувьцаа эзэмшигчид, түншүүд, орон нутгийн иргэддээ бидэнд үргэлж итгэл хүлээлгэн, дэмжсээр ирсэнд чин сэтгэлийн талархал илэрхийлье. Хувьцаа эзэмшигчдэд хүргэх захидалтай доорх линкээр танилцана уу. lnkd.in/dG56K9SB

🐻🏃‍♂️ @erdene_llc team joined the Ulaanbaatar Marathon 2026 under the “Save Mazaalai” campaign. Together, we are raising awareness for the protection of the Gobi bear (Mazaalai) and supporting efforts to preserve Mongolia’s unique biodiversity for future generations. 🌿 #SaveMazaalai #Gobibear #UBMarathon #ErdeneMongol

Today is International Day for Biological Diversity! 🐻🌿 @erdene_llc continues to support field research focused on tracking and understanding the habitat and migration routes of the Gobi bear (Mazaalai), Mongolia’s national pride animal. Through ongoing monitoring and research, we hope to contribute to the long-term protection and conservation of this remarkable animal and its fragile desert ecosystem.

🌍 Happy Earth Day! 🌿 To celebrate this special day, we are pleased to share photos of the extremely rare Gobi bear (Mazaalai), captured on April 14, 2026. 🐻 As part of its commitment to protecting and promoting Mongolia’s iconic Mazaalai bear, @erdene_llc signed a MOU in 2024 with the Ministry of Environment and Climate Change. Since then, the Company has been actively supporting conservation efforts through ongoing collaboration with government agencies, NGOs, researchers, and environmental specialists. 🐻 In 2024, Erdene Mongol partnered with “Central TV” to produce and broadcast a documentary series on the Mongolian Mazaalai, organized educational social media competitions for children in Bayankhongor Province. Also, started initiatives to improve wildlife habitats, such as: the development of additional water sources, including the construction of ponds and water points. 💧🌱🌿 🐻 In 2025, Erdene Mongol sponsored the scientific documentary “Guardians of the Great Gobi,” produced in collaboration with the Ministry of Environment and Climate Change and Eguur Agency. In June 2025, in partnership with Dr. A. Bayasgalan, a researcher from the Gobi Bear Conservation Society NGO, a satellite tracking collar was fitted on a Mazaalai named “Erdene.” The bear entered hibernation in November and emerged on March 1, 2026, with movement recorded in the Khutsyn Shand area. 🐻 Researchers emphasize that satellite tracking and genetic studies provide valuable insights into the Mazaalai’s behavior, habitat range, and ecology. These efforts play a critical role in improving conservation planning and enabling more accurate population assessments. Photo credit: U. Ganbayar (Khureelen Project) #Earthday #SaveMazaalai #ErdeneMongol

We are pleased to share that Erdene will be participating in the Ignite Asia Series, beginning in Hong Kong (April 15–16), followed by Singapore (April 21–22), hosted by Ignite Partners. Peter Akerley, President and CEO of Erdene, will be presenting on April 15 at 10:40 AM in Hong Kong. If you are attending and would like to schedule a 30-minute meeting with our team, please register here: weareignite.com/investor/ We look forward to connecting with investors across Asia. #ErdeneResource #IgniteAsia #Mining #Gold #HongKong #Singapore

The 62nd National Mathematics Olympiad has officially commenced in Bayankhongor Province. Top students from all 21 provinces and the nine districts of the capital have gathered to demonstrate their knowledge and compete. @erdene_llc is contributing to education and science through its support of the Olympiad.

"Сүрээр дарагч" хэмээх гал морь жилийн сар шинийн мэндийг өргөн дэвшүүлье. Элгээрээ энх амгалан, төрлөөрөө төвшин амгалан байж сар шинэдээ сайхан шинэлээрэй. Erdene wishes everyone a happy Tsagaan Sar and good health and prosperity in the coming year of the Horse!

👷 D. Vanchinbal, a Mine Geologist at Erdene Mongol LLC, shares the story of how he chose his profession. 📍 He was first introduced to the field of geology while attending a community open day organized by Erdene Mongol LLC, which inspired him to pursue his studies. After graduating, he began his career with the company as a geology assistant and has since been promoted to his current role as a mine geologist.

Our Senior Geologist, G. Bat-Erdene and General Manager of Construction G.Davaadorj, were awarded the Order of the Red Banner of Labor Valor of Mongolia and Order of the Polar Star on December 25, 2025 — Miners Day. This honor recognizes their significant contributions to the exploration and construction success of the Bayan Khundii Gold Mine and the broader Khundii Minerals District. The entire Erdene team extends our heartfelt congratulations to Mr. Bat-Erdene and Mr.Davaadorj on this well-deserved achievement. On this occasion, we would also like to congratulate all miners on Miners Day — a celebration of the hard work, resilience, and commitment that drive the mining industry forward. ⛏️ Happy Miners Day to all! Уурхайчдын баярын өдрөөр Эрдэнэ Ресурсийн Ерөнхий геологич Г. Бат-Эрдэнэ, Барилгын албаны дарга Г.Даваадорж нь Монгол Улсын “Хөдөлмөрийн гавьяаны улаан тугийн одон” болон “Алтан Гадас одон"-гоор шагнууллаа. Баянхөндий төсөл болон Хөндий Эрдсийн Дүүргийн хайгуулын амжилт, бүтээн байгуулалтад оруулсан үнэтэй хувь нэмрийг үнэлж, төрийн дээд одонгоор шагнуулсан Г. Бат-Эрдэнэ болон Г.Даваадорждоо Эрдэнэ Ресурсийн хамт олны өмнөөс халуун баяр хүргэе. Мөн уул уурхайн салбарт хүч хөдөлмөрөө зориулж буй бүх уурхайчдадаа Уурхайчдын баярын мэндийг хүргэж, энэхүү салбарыг нуруундаа үүрч яваа та бүхэндээ талархал илэрхийлье.   Уурхайчдын баярын мэнд хүргэе!✨

Erdene Resource Development Corp. had the honour of opening the market at the #TorontoStockExchange, celebrating 20 years on the exchange and first gold at the Bayan Khundii Gold Mine! From discovery to production, these milestones reflect the work by the Erdene team as the Bayan Khundii project moves into its next phase and the company positions itself for long-term growth as a multi-commodity, multi-mine producer. Thank you to our team, partners, and the @TMXGroup for helping mark this occasion! Эрдэнэ Ресурс Девелопмент Корпораци нь Торонтогийн хөрөнгийн биржийн арилжааг нээх хүндэтгэлийг хүлээж, тус биржид бүртгэгдсэний 20 жилийн ой болон Баянхөндий алтны уурхайн анхны алтыг олборлосноо тэмдэглэлээ. Нээлтээс олборлолт хүртэлх эдгээр амжилтууд нь баг хамт олны тууштай хөдөлмөр, хамтын хүчин чармайлтын үр дүн бөгөөд Баянхөндий төслийг дараагийн үе шатанд шилжүүлэн, урт хугацаанд олон төрлийн бүтээгдэхүүн бүхий олон төслийг хөгжүүлэх зорилгодоо дөхөж буйг давхар илэрхийлж байна. Энэхүү түүхэн мөчийг хамтдаа бүтээхэд үнэтэй хувь нэмэр оруулсан нийт хамт олон, түншүүд болон Торонтогийн хөрөнгийн биржид чин сэтгэлийн талархал илэрхийлье. #TSX #Gold #Mining #Mongolia #Exploration #ERD #ERDN #ERDCF

🤝 In 2023, Erdene Mongol LLC signed a Memorandum of Understanding with the Ministry of Environment and Climate Change to support the National Gobi Bear Conservation Program. 🐻 Under a Presidential Decree, the Gobi bear—recognized as Mongolia’s “National Pride Animal”—has been the focus of continuous efforts to improve its habitat, provide supplemental food, and raise public awareness. ✅ Over the past years, we have undertaken multiple conservation initiatives, including building small reservoirs and increasing water points, installing feeding stations and providing feed, and cultivating Rheum, the Gobi bear’s primary natural food source. 🐻🎬 In 2025, @erdene_llc partnered with the Ministry of Environment and the Eguur Agency to support the production of the documentary "Guardian of the Great Gobi" as an official sponsor.

@ErdeneRes graduated to the OTCQX® Best Market from the OTCQB® Venture Market. Its shares begin trading today under the symbol “ERDCF.” Trading on OTCQX provides Erdene with increased visibility and accessibility for U.S. investors, supported by enhanced disclosure and governance standards. #OTCQX #Mining #Gold #Mongolia

Erdene Resource Development Corp. has released its Q3 results. Following the first gold pour at the Bayan Khundii mine in Mongolia on September 14, just ten years after its discovery, both the mine and processing plant are performing in line with expectations. The company remains on track to reach nameplate capacity by year-end. Now with Bayan Khundii running smoothly, the company's focus is set to turn to exploration to expand and extend Bayan Khundii, with 9,300 metres of drilling planned across the Khundii Mining License. Erdene is also advancing its wholly owned projects.  In October, Erdene announced an updated independent mineral resource estimate for its Zuun Mod Molybdenum-Copper project, confirming the project as one of Asia’s largest undeveloped projects. Drilling is now underway on the Zuun Mod project and the initial surface program is continuing at Tereg Uul, near Oyu Tolgoi, one of the world's largest copper-gold deposits. Work at Dark Horse and Altan Nar is also set to continue into 2026. Read the full press release here: bit.ly/Q3_2025_results Management will host a conference call and webcast on November 5, 2025, at 10:00 am ET to discuss these results. Details to participate are as follows: ·      Canada & US toll-free: (+1) 800 717 1738 ·      Outside of Canada & US: (+1) 289 514 5100 Webcast: Here: bit.ly/3WDoFgI hashtag#Q3Results hashtag#GoldExploration hashtag#MiningMongolia hashtag#Copper hashtag#Molybdenum hashtag#MiningNews

Today we celebrated the completion of commissioning and official opening of the Bayan Khundii Gold Plant. First gold has been poured and we expect to achieve name plate production by year-end. Өнөөдөр бид Баянхөндийн алт боловсруулах үйлдвэрийн туршилт тохируулгыг амжилттай дуусгаж, албан ёсны нээлтийг хийлээ. Энэ өдөр анхны алтыг цутгасан бөгөөд 2025 оны эцэст олборлолтыг тогтворжуулахаар төлөвлөж байна.

Countdown to Precious Metals Summit Beaver Creek! We are excited to participate in the Precious Metals Summit from September 9-12, 2025 in Beaver Creek. The event is focused on explorers, developers and emerging producers in the mining sector, and we’re thrilled to share our latest developments with investors. For more information visit buff.ly/35dN6WC Stay tuned for updates from the conference. See you there! Бид Precious Metals Summit Beaver Creek -д оролцохоор төлөвлөж байна. 2025 оны 9 сарын 9-12-ны хооронд зохион байгуулагдах уг арга хэмжээ нь уул уурхайн салбарын хайгуул, хөгжүүлэлт, олборлолтын цөөн төслүүдийг онцолдог. Дэлгэрэнгүй мэдээлэлтэй buff.ly/35dN6WC-оос танилцана уу.