Mr. Matthew Mason, a shareholder, reports

EARLY WARNING NEWS RELEASE REGARDING THE ISSUANCE OF SECURITIES OF STALLION URANIUM CORP.

In accordance with the requirements of Section 3.1 of National Instrument 62-103 -- The Early Warning System and Related Take-Over Bid and Insider Reporting Issues, Matthew J. Mason has acquired, in connection with the closing of the private placement of Stallion Uranium Corp. on April 24, 2025, four million common shares for total consideration of $400,000.

Immediately before the closing of the private placement: (i) Mr. Mason held an aggregate of 1,825,000 common shares, representing approximately 6 per cent of the issuer's issued and outstanding common shares on an undiluted basis; and (ii) assuming the exercise in full of all of the convertible securities of the issuer held by Mr. Mason, being 137,500 warrants to purchase an additional 137,500 common shares, Mr. Mason would have held an aggregate of 1,962,500 common shares, representing approximately 6.5 per cent of the issuer's issued and outstanding common shares on a partially diluted basis.

Immediately after the closing of the private placement: (i) Mr. Mason held an aggregate of 5,825,000 common shares, representing approximately 12.99 per cent of the issuer's issued and outstanding common shares on an undiluted basis; and (ii) assuming the exercise in full of all of the convertible securities held by Mr. Mason, being 137,500 warrants to purchase an additional 137,500 common shares, Mr. Mason would hold a total of 5,962,500 common shares, representing approximately 13.3 per cent of the issuer's issued and outstanding common shares on a partially diluted basis.

Mr. Mason acquired such common shares for investment purposes and may, from time to time, acquire additional securities of the issuer or dispose of such securities as he may deem appropriate, on the basis of his assessment of market conditions and in compliance with applicable securities regulatory requirements. A copy of the early warning report filed by Mr. Mason may be obtained on the company's SEDAR+ profile.