IsoEnergy Confirms High Grade Uranium Mineralization on the Hurricane South Trend, with up to 4.21% U3O8 over 3.5 m, including up to 11.6% U3O8 over 1.0 m
IsoEnergy drills into Hurricane South with world-class grades, but the market already smelled the uranium.
IsoEnergy released assay results from its 2026 winter drilling at the Larocque East project. The headline intercept is 4.21% U3O8 over 3.5 m, including 11.61% U3O8 over 1.0 m, in a newly reinterpreted fault zone along the Hurricane South Trend. The company also reported 2.75% U3O8 over 0.5 m and 1.75% over 0.5 m in step‑out holes. These assays confirm the high‑grade tenor indicated by earlier radioactivity readings (up to 30,050 cps). IsoEnergy plans an 8,000‑metre, 20‑hole summer follow‑up program to expand the South Trend footprint. The current Hurricane deposit holds 48.6 Mlb indicated at 34.5% U3O8 and 2.7 Mlb inferred at 2.2%.
The assay results are undeniably strong – grades above 4% U3O8 over true widths of 3.5 m rank among the best in the Athabasca Basin. However, the market has been anticipating this outcome ever since the April 7, 2026 radioactivity update, which flagged 30,050 cps in the same hole and sparked a rally from $14.31 to $18.09 by May 11. Consequently, the confirmation is largely priced in; the stock barely reacted on the news day (no price data for May 12 in the provided series, but the prior day’s close already reflected the expectation). The news reinforces the resource expansion thesis at Hurricane South but does not materially alter the project’s valuation or introduce a new discovery. It is an expected, incremental positive – hence Routine‑Positive rather than Material‑Game Changer or even Material‑Positive.
IsoEnergy is a uranium exploration and development company listed on the TSX (ISO) and NYSE American (I). Its 100%‑owned Larocque East project in Saskatchewan’s Athabasca Basin hosts the Hurricane Deposit – the world’s highest‑grade indicated uranium resource (48.6 Mlb at 34.5% U3O8 indicated, 2.7 Mlb at 2.2% inferred). The deposit lies at shallow depth (~325 m) only 40 km from the McClean Lake mill. The company also holds a substantial U.S. portfolio in Utah: three fully‑permitted, past‑producing mines (Tony M, Daneros, Rim) that can be restarted quickly via a toll‑milling agreement with Energy Fuels’ White Mesa mill. A PEA for Tony M is expected by end‑2026. Additionally, IsoEnergy has a 50/50 JV with Purepoint on the Dorado project (high‑grade Nova discovery) and has agreed to acquire Toro Energy to add the Wiluna Uranium Project in Australia. This diverse tier‑one jurisdiction footprint positions IsoEnergy as a multi‑asset developer with a near‑term production path.