🧾 What This Document Is

This is a 6-K filing from Aura Minerals, which is like a special report they file with the SEC to tell investors about important events. This specific report is all about their updated Mineral Reserves and Resources (MRMR). Think of it as a comprehensive inventory update of all the gold, copper, and silver they own underground across their mines and projects as of the end of 2025. It’s a technical but crucial document that shows the company’s future potential.

👉 In simple terms: Aura is telling the market, "Here’s exactly how much metal we have in the ground right now, and it’s a lot more than before."

🏢 What The Company Does

👉 In simple terms… Aura Minerals is a mining company that digs gold and other metals out of the ground in the Americas. They operate six mines in Brazil, Mexico, and Honduras and have several projects in development.

They call their strategy "360° Mining," which means they try to balance making a profit with caring for their employees, local communities, and the environment. Their main focus is gold, but they also produce copper and silver.

🚀 The Big Picture: Portfolio Growth

The headline story here is significant growth. In 2025, Aura didn't just mine metals; they invested heavily in finding more and bought new projects.

Drilling for Answers: They spent US$21.8 million on exploration and drilled over 106,500 meters. That's like drilling a hole deeper than Mount Everest is tall, multiple times over! They boast about having one of the industry’s lowest "discovery costs," meaning they find new metal relatively cheaply.
Strategic Buys: They acquired two new projects: the MSG Project and Era Dorada. These acquisitions were a major driver of the growth in their inventory.
The Result: Their overall portfolio of metals in the ground got much bigger and stronger, setting them up for more production in the future.

💰 The Inventory Update: Reserves vs. Resources

This is the core of the filing. In mining, there are two key categories:

Mineral Reserves (Proven & Probable): This is the economically mineable part. It’s the high-confidence inventory they have detailed plans to dig up and sell at a profit.
Mineral Resources (Measured, Indicated & Inferred): This is the potentially mineable stuff. It’s metal they know is there, but they need more work (like more drilling or better economics) to turn it into a Reserves. "Inferred" is the lowest confidence category.

Here’s how Aura’s inventory changed from the end of 2024 to the end of 2025:

📈 Proven & Probable Reserves (The "Bank Account")

This is the most important number for near-term production plans.

Gold Equivalent Ounces (GEO): Exploded from 3.4 million GEO to 7.22 million GEO. That’s more than doubling their high-confidence inventory!
Why the jump?
- Adding the newly acquired MSG Project.
- A huge update at their Borborema mine in Brazil after getting approval to move a highway, which allowed them to expand their mine plan.
- Strong results from exploration and using higher gold price assumptions in their calculations.

📊 Mineral Resources (The "Exploration Potential")

Measured & Indicated (M&I): Increased 26% to about 3.49 million GEO. This is solid growth in their medium-confidence inventory.
Inferred: This category more than tripled (+200%) to 3.92 million GEO. This massive increase comes from the MSG acquisition and new findings at Borborema and Almas. It represents big future optionality.

📦 Mine-by-Mine Highlights

The growth wasn't just in one spot. Here’s a quick look at key operations:

Borborema (Brazil): The star of the show. Reserves jumped 170% thanks to the highway relocation and higher gold prices. It now has a 35-year mine life planned.
Almas (Brazil): Successfully added high-grade underground reserves at its Paiol deposit. They are building an underground mine there, with production planned to start in 2028.
Aranzazu (Mexico): A stable copper-gold-silver mine. Reserves grew slightly in tonnage but decreased in metal content as they refined their models.
MSG (Brazil): The newly acquired mine now contributes 752,770 gold ounces to the Proven & Probable reserve category.
Era Dorada (Brazil): Another new acquisition with a high-grade reserve of 1.69 million ounces of gold. A feasibility study shows it could produce ~111,000 ounces per year for 17 years.

🔮 What's Next: From Ground to Gold

This updated inventory directly fuels Aura’s future plans:

Production Growth Target: They produced 280,000 GEO in 2025. With these new reserves, they aim to achieve over 600,000 GEO in the upcoming years. That’s a major ramp-up.
Project Pipeline: They are actively advancing development projects like Matupá (with new satellite deposits found) and Almas Underground, which will become new sources of gold.
Market Recognition: The company notes its Average Daily Trading Volume (ADTV) soared from US$2 million to over US$90 million in early 2026, suggesting more investor interest as the story unfolds.

⚖️ Strengths & Risks

👍 Strengths

Successful Growth Strategy: They are effectively using both exploration (drilling) and M&A (acquisitions) to grow their asset base.
Strong Balance Sheet: The growth in Reserves improves their ability to secure financing and signals long-term stability to investors.
Operational Discipline: Maintaining a low discovery cost while growing is impressive.
Positive Market Signal: The massive jump in reserves and the rising stock trading volume indicate the market is starting to take notice.

⚠️ Risks & Considerations

Commodity Prices: Their reserve calculations are based on specific gold, copper, and silver prices (e.g., Gold at US$2,600/oz). If prices fall below these levels, some reserves may no longer be economical to mine.
Execution Risk: Turning a reserve into a producing mine is complex, costly, and can face delays in permitting, construction, or operational challenges.
Inferred Resources: A large portion of their growth is in the "Inferred" category, which has lower confidence. Converting this into higher-confidence reserves requires more investment and time.

🧠 The Analogy

Imagine Aura Minerals was a restaurant owner. For years, they had a good pantry stocked with ingredients (their old reserves). In 2025, they didn't just cook meals; they went out and bought two new farms (MSG & Era Dorada) and discovered a huge new vegetable patch on their own land (Borborema). Now, their pantry is overflowing. They’ve also mapped out where the best vegetables are (the Reserves) and found promising new fields to explore (the Inferred Resources). The big question for 2026 and beyond is: can they efficiently harvest all this bounty and turn it into profitable meals (gold production) for their shareholders?

📇 Key Contacts & People

Rodrigo Barbosa: President & CEO of Aura Minerals.
Farshid Ghazanfari, P.Geo.: Geology and Mineral Resources Manager for the Company. He is a key "Qualified Person" who approved much of the technical information.
Investor Relations Email: [email protected]
Company Website: www.auraminerals.com

🧩 Final Takeaway

Aura Minerals ended 2025 with a dramatically expanded and higher-quality inventory of gold in the ground, primarily driven by smart acquisitions and successful exploration at existing mines. This doubles their proven reserves and sets a clear path to potentially double their annual production, positioning the company for significant growth in the coming years.

Aura Minerals Inc. — 6-K Filing