Wayne Lam

- First Majestic Silver Corp. announced **positive drilling results** from its 2024/2025 exploration programs at the Los Gatos Silver Mine in Chihuahua, Mexico.  **[1308648_0001062993-25-015280_exhibit99-1.htm:0]** 
- The drilling identified significant silver and base metal mineralization, including high-grade intercepts such as **1080 g/t AgEq** over **1.6 meters true length** in the South-East Deeps and **1013 AgEq g/t** over **1.9 meters true length** in the Central Deeps.  **[1308648_0001062993-25-015280_exhibit99-1.htm:0]** **[1308648_0001062993-25-015280_exhibit99-1.htm:1]** **[1308648_0001062993-25-015280_exhibit99-1.htm:2]** 
- These results are expected to support **meaningful Mineral Resource growth** at Los Gatos, although they were not included in the company's year-end Mineral Reserve and Mineral Resource Estimates.  **[1308648_0001062993-25-015280_exhibit99-1.htm:0]** 
- First Majestic holds a **70% interest** in the Los Gatos Joint Venture.  **[1308648_0001062993-25-015280_exhibit99-1.htm:4]**

First Majestic Silver Corp. Reports Positive Exploration Results at Los Gatos

- First Majestic Silver Corp. reported **positive drilling results** from its ongoing exploration program at the **San Dimas Silver/Gold Mine** in Durango, Mexico, as of August 18, 2025.  **[1308648_0001062993-25-014861_exhibit99-1.htm:0]** 
- The exploration program was designed to explore for new veins, expand Mineral Resources, and upgrade Inferred Mineral Resources to Indicated Mineral Resources.  **[1308648_0001062993-25-014861_exhibit99-1.htm:0]** 
- Significant gold and silver mineralization was intersected in multiple veins across the property, including Sinaloa-Elia, Roberta, Santa Teresa, and the new Coronado vein.  **[1308648_0001062993-25-014861_exhibit99-1.htm:0]** 
- Key high-grade intercepts include **3.57 meters** at **15.93 g/t Au** and **1,112 g/t Ag** (ELI25X-1) and **1.06 meters** at **23.70 g/t Au** and **578 g/t Ag** (ELI25X-17) from the Sinaloa-Elia veins.  **[1308648_0001062993-25-014861_exhibit99-1.htm:0]** 
- Keith Neumeyer, President & CEO, stated that these results reinforce San Dimas as a **high-quality asset** with **significant growth opportunities** for the company.  **[1308648_0001062993-25-014861_exhibit99-1.htm:0]**

FIRST MAJESTIC SILVER (AG)