Rare, near-pure antimony. Building the North American antimony supply chain

Antimony goes into munitions, night vision, semiconductors, batteries and flame retardants, and most of those uses have no proven substitute.

The U.S. imports almost all of the antimony it uses, and China's pause on its ban on exports to the U.S. expires on November 27, 2026.

Critical One provides exposure through Howells Lake, an Ontario antimony-gold project where modern drilling has hit near-pure antimony near surface, and where a strategic capital partner, a buyer and a processing plant are in place before the first resource estimate.

Grade, and what sits around it.

Pure stibnite is 71.7% antimony. Two holes at Howells Lake read 70.2% and 70.3%. Above 5% is high-grade by common exploration benchmarks, and grades of 5% to 25% have shipped straight to processors. Around the near-pure bands, the antimony continues over wider intervals, with gold beneath.

The material is clean on the samples tested, with no arsenic or mercury minerals identified. Both are penalty elements that make antimony concentrate harder to sell.

A global comparison of about 90 antimony assets, cited in Micon's report, places the grade at or near the top.

And the route to market is partnered: a capital partner that is also the buyer, a developer building the plant we part-own, and a construction financing plan, all before the first resource estimate.

Independent engineers checked it. Micon International's NI 43-101 technical report (effective September 15, 2026) reviewed the drilling, sampling and database, visited the site, ran its own check assays (ten agree, two in follow-up), and recommended the full 20,000-meter program.

Every 2026 interval is verified by our Qualified Person, with antimony assays above 5% re-run at a second accredited laboratory.

The original discovery geologist sits on the board. We hold our Ontario exploration permit and an exploration agreement with Eabametoong First Nation.

And a strategic investor has priced its placement at a 48% premium to market, on the strength of what has been drilled.

Drilling so far covers about 300 m of strike in the East Zone, on a land package with about 30 km of antimony-gold targets.

The system is open northeast, west and at depth, and NQ drilling is continuing below 200 m.

Gold runs beneath the East Zone antimony and in the West Zone, 200 m to the west, and is being evaluated for a future resource.

Airborne geophysics flown over the full property in 2025 identified conductors and structures beyond the historical drilling. Most of them are untested.

Funded, permitted and partnered.

The 20,000 m program is funded, with no debt and 27% of the shares held by founders, management and advisers.

The permit, the Ontario grant and the First Nation agreement are in place, and Green Infrastructure Partners is planning the road to Pickle Lake.

Solar International Core Canada is a shareholder at a 48% premium, funds our carried stake in the Ontario processing plant Northlink is developing, holds the exclusive right to buy up to 150 million pounds of our antimony, and brings a construction financing plan of up to C$400 million.

Gen. (Ret.) Charles A. Flynn supports U.S. defense and offtake relationships.

Critical One is an exploration-stage company. No mineral resource has been estimated at Howells Lake, and future production is not guaranteed.

The risks are the ones every exploration company carries: continuity between holes, true widths, metallurgy, permitting, financing and the antimony price. The full list is in our continuous disclosure on SEDAR+.

The work is sequenced to answer each in turn: continued drilling toward an initial resource estimate for the East Zone, HQ metallurgical holes and the test work on that material, and the studies that precede a construction decision.

Critical One offers early exposure to a potential large-scale North American antimony source at a time of high import reliance and few public antimony names.

Near-term catalysts include results from the funded 20,000-metre program, step-outs along the broader trend, geological modelling and further metallurgical work.
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Further out, watch for progress toward a potential initial mineral resource estimate, direct-ship evaluation, additional gold results and U.S. strategic and supply-chain positioning.