Mr. Frank Guillemette, a shareholder, reports

EARLY WARNING PRESS RELEASE - FRANK GUILLEMETTE ANNOUNCES COMPLETION OF ACQUISITION OF COMMON SHARES OF CAPROCK MINING CORP

On May 15, 2026, Frank Guillemette acquired an aggregate of 1,375,500 common shares in the capital of Caprock Mining Corp. through the facilities of the Canadian Securities Exchange for total consideration of $176,820.

Immediately prior to the acquisition, the acquiror held 16,492,166 common shares and 4,633,333 common share purchase warrants of the issuer, representing approximately 16.32 per cent of Caprock's issued and outstanding common shares, assuming exercise of the common share purchase warrants held by the acquiror. As of the acquiror's early warning report dated May 11, 2026, the acquiror held 14,691,666 common shares and 4,633,333 common share purchase warrants of the issuer, representing approximately 14.93 per cent of Caprock's issued and outstanding common shares, assuming exercise of the common share purchase warrants then held by the acquiror.

After giving effect to the acquisition, the acquiror now holds 17,947,666 common shares and 4,633,333 common share purchase warrants of the issuer, representing approximately 17.44 per cent of Caprock's issued and outstanding common shares, assuming exercise of the common share purchase warrants held by the acquiror. This represents an increase of approximately 1.12 per cent in the acquiror's shareholdings in Caprock and an increase of approximately 2.51 per cent in the acquiror's holdings in Caprock since the acquiror's early warning report dated May 13, 2026. The securities were acquired for investment purposes only. The acquiror may from time to time increase or decrease ownership or control of securities of Caprock depending on market conditions and/or other relevant factors. A copy of the early warning report has been filed on SEDAR+.