Antimony is an essential critical mineral used in defense systems, energy infrastructure, battery supply chains, semiconductors, and flame-resistant materials. Often with limited or no practical substitutes.

For decades, most global supply has been controlled by China and Russia. But as their own supply tightens and export controls increase, North American governments are now actively seeking secure, non-Chinese sources.

That shift is why antimony has moved from “overlooked” to “strategic.” And it’s why investors are increasingly focused on companies that control large-scale antimony systems in Tier-1 jurisdictions.

Critical One Energy offers direct exposure through the Howells Lake Antimony-Gold Project in Ontario: one of Canada’s largest known undeveloped antimony systems, with additional gold upside.

Howells Lake stands out because it combines three rare characteristics in one project:

Scale and control: the Company expanded the land position in 2025 by 67%, consolidating roughly 25,000 hectares and approximately 30 kilometres of favourable antimony-gold geology under one operator.

High-grade historic foundation: the deposit was advanced by major mining groups in the past, but left undeveloped when antimony prices were far lower than they are today.

Modern upside beyond the historic footprint: recent interpretation of modern geophysics supports the view that the system may extend meaningfully at depth and along strike. This creates real expansion potential that wasn’t testable with older exploration methods.

This is what makes Howells Lake different: it’s a known deposit and a district-scale system with multiple paths to grow.

Howells Lake benefits from a substantial historic exploration foundation, including drilling, trenching, and technical work completed before modern disclosure standards were introduced.

What strengthens credibility today is the quality of the historic dataset and the Company’s approach to upgrading it.

Critical One has brought in the original discovery geologist, expanded the technical team, completed modern geophysical interpretation, received the Ontario exploration permit, signed an exploration agreement with Eabametoong First Nation, and commenced Phase I drilling.

The goal is to do this properly: verify key zones under modern standards, step out intelligently, and build the foundation for a compliant resource pathway over time.

The upside at Howells Lake is not limited to simply repeating historic drilling.

Modern geophysical interpretation supports the view that mineralization may extend well beyond the historic footprint, both at depth and laterally, suggesting the system could be materially larger than what earlier exploration outlined.

And the Company’s consolidation strategy matters here: by controlling a district-scale land package across a long favourable corridor, Critical One has room to pursue multiple zones. Not just one deposit.

In addition, the Company has added meaningful gold upside through its acquisition of the contiguous KCR Gold Project, including the Slam Gold Zone, where a historic results returned strong grades over long intervals, while also remaining open in every direction.

The plan is structured around incremental value creation: verify, extend, and build toward scale with modern data.

Critical One has spent the last year positioning the Company to execute, with recent financings and Ontario government exploration funding helping advance Howells Lake into permitting and Phase I drilling.

In 2025, the Company completed a $3.0M unit financing followed by two oversubscribed flow-through financings totalling $9.38M, designed to qualify under Canada’s critical mineral flow-through rules.

These financings were structured to support the next phase of exploration and leave the Company fully funded for its planned maiden drill program, while continuing to build the technical and operational foundation needed for a project of this scale.

As with any early-stage exploration company, the main risks include permitting timelines, drilling outcomes, commodity price volatility, and broader market conditions.

Critical One reduces those risks in several practical ways:
→ Operating in Ontario, a stable mining jurisdiction with strong infrastructure and established permitting frameworks
→ Advancing a strategic metal with rising importance and constrained global supply
→ Using historic datasets plus modern geophysics to target drilling more efficiently
→ Maintaining a disciplined step-by-step plan focused on verification and expansion—not overpromising
→ Building on the partnership-first relationship with Eabametoong First Nation (EFN) to support responsible, long-term project development

The Company treats community partnership as foundational. Its approach emphasizes long-term relationships, transparency, and responsible exploration that supports durable project development.

Critical One is built around a simple growing setup: a strategic metal that suddenly matters again, paired with a large-scale Canadian asset that was ignored when antimony prices were a fraction of today’s levels.

Near-term catalysts investors tend to watch include:
→ Drill permitting and the start of the maiden drill program at Howells Lake
→ Step-out drilling guided by modern geophysical interpretation
→ Ongoing technical work supporting a modern resource pathway over time
→ Advancement of additional target zones across the broader district-scale land package
→ Follow-up on the Slam Gold Zone upside within the KCR Project

For investors looking at strategic metals and critical mineral supply chains, Critical One offers rare public-market exposure to a district-scale antimony system in a Tier-1 jurisdiction, at the point where modern work is just beginning.