Mr. Chad Ulansky reports

ADDITIONAL FINDER'S FEES AND FINDER'S WARRANTS DISCLOSURE

Cantex Mine Development Corp. has made a correction to the finders' warrants disclosed in the Sept. 18, 2026, news release announcing the close of the oversubscribed private placement.

The company was charged $18,000 in finders' fees, which were paid in cash, and issued 70,000 non-transferable finders' warrants on the closing of the final tranche of the offering for their assistance in identifying purchasers of units and FT shares. Each finder's warrant entitles the holder to purchase one common share at an exercise price of 40 cents per finder share for a period of two years from the date of issuance of the finder's warrant; it was incorrectly disclosed as 25 cents per finder share in the Sept. 18 news release.

The company would also like to disclose under Section 3.1(c) of Policy 5.1 that the finders' fees charged to the company, and the finders' warrants issued across the offering were as shown in the attached table.

About Cantex Mine Development Corp.

Cantex is focused on its 100-per-cent-owned 20,000-hectare North Rackla project located 150 kilometres northeast of the town of Mayo in the Yukon Territory, Canada, where high-grade massive sulphide mineralization has been discovered. Over 100,000 metres of drilling has defined high-grade silver-lead-zinc-germanium mineralization over 2.80 kilometres of strike length and at least 700 metres depth. The mineralization remains open along strike and to depth. In addition the company has discovered copper and gold mineralization. The company is led by Dr. Charles Fipke, CM, the founder of Ekati, Canada's first diamond mine.

The technical information and results reported here have been approved by Chad Ulansky, PGeol, a qualified person under National Instrument 43-101, who is responsible for the technical content of this release. Mr Ulansky is the company's president and chief executive officer.